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WO2013129332A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2013129332A1
WO2013129332A1 PCT/JP2013/054804 JP2013054804W WO2013129332A1 WO 2013129332 A1 WO2013129332 A1 WO 2013129332A1 JP 2013054804 W JP2013054804 W JP 2013054804W WO 2013129332 A1 WO2013129332 A1 WO 2013129332A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
chain hydrocarbon
hydrocarbon moiety
area
liquid
Prior art date
Application number
PCT/JP2013/054804
Other languages
English (en)
Japanese (ja)
Inventor
野田　祐樹
竜也 田村
貴志 野本
卓 小野塚
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2012082104A external-priority patent/JP5762345B2/ja
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Publication of WO2013129332A1 publication Critical patent/WO2013129332A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/531—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/5323—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having absorbent material located in discrete regions, e.g. pockets
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15699—Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53704—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having an inhibiting function on liquid propagation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/539—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium characterised by the connection of the absorbent layers with each other or with the outer layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/53708—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
    • A61F2013/53721—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means
    • A61F2013/53734—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means with compressed lines
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F2013/53765—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
    • A61F2013/53778—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with grooves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F2013/53765—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
    • A61F2013/53786—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with folds

Definitions

  • the present invention relates to absorbent articles such as sanitary napkins, panty liners, disposable diapers, incontinence pads, incontinence liners and the like.
  • a general absorbent article comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet, and the liquid transmitted from the top sheet Is absorbed and held by the absorber. And at the time of deformation
  • topsheet when the topsheet is in a non-tensioned condition it is substantially closed, and when the topsheet is under tension, it has a plurality of slits that extend through the topsheet and open. It is proposed to form (patent document 1).
  • An object of the present invention is to provide a novel absorbent article that prevents excessive compression of the absorbent and rewet associated therewith due to deformation of the absorbent article.
  • the present invention is an absorbent article comprising a liquid-permeable sheet, a liquid-impermeable sheet, and an absorber provided between the liquid-permeable sheet and the liquid-impermeable sheet.
  • a liquid-pervious sheet having a liquid-supplied area receiving the liquid and a peripheral area located around the liquid-supplied area, and having a stretchable bellows in the liquid-supplied area
  • An extensible region and a flexible region surrounding the extensible region are formed, and the first region releasably adheres the fluid receiving region and the absorber between the fluid receiving region and the absorber.
  • a second adhesive layer having a higher adhesive strength than the first adhesive layer between the peripheral region and the absorber, or the adhesive layer is not formed.
  • an absorbent article being formed.
  • the absorbent article of the present invention is bent at the liquid-supplied area of the liquid-permeable sheet, and exhibits the following effects when it is convexly deformed toward the liquid-supplied area.
  • the first adhesive layer that releasably adheres the liquid-supplied area and the absorber is formed between the liquid-supplied area and the absorber, the first adhesive layer is formed during convex deformation of the absorbent article.
  • the liquid-supplied area and the absorber which are adhered via the adhesive layer peel off, and the stretchable area of the liquid-supplied area is stretched.
  • the stretchable area of the liquid supply area stretches. Therefore, the absorber is less susceptible to pressure by the liquid supply area, and excessive compression of the absorber due to the deformation of the absorbent article and the accompanying rewet are prevented.
  • the liquid supplied area is around the liquid supplied area.
  • the stretchable region of the is easy to stretch in the direction away from the absorber. Accordingly, excessive compression of the absorbent and rewet associated therewith due to deformation of the absorbent article are effectively prevented.
  • the absorbent article of the present invention when the absorbent article of the present invention is deformed while changing the bending angle (for example, when the wearer of the absorbent article changes the posture, the bending angle of the absorbent article becomes acute or obtuse) Of the flexible sheet, because the liquid-permeable sheet is likely to follow the deformation of the absorbent article by the elastic restoring force (repulsion force) of the flexible region. Sticking to the skin is prevented.
  • a novel absorbent article which prevents excessive compression of the absorbent and rewet associated therewith due to deformation of the absorbent article.
  • FIG. 1 is a plan view of a sanitary napkin according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing a cross section taken along line AA of FIG.
  • FIG. 3 is a partially broken perspective view showing the stretchable area and the flexible area of the top sheet in the sanitary napkin according to one embodiment of the present invention.
  • FIG. 4 is a perspective view of a sanitary napkin according to an embodiment of the present invention in a convex shape.
  • FIG. 5 is a figure for demonstrating the manufacturing method of the sanitary napkin which concerns on one Embodiment of this invention.
  • FIG. 6 is a view for explaining a recess forming roll used for manufacturing a sanitary napkin according to one embodiment of the present invention.
  • FIG. 1 is a plan view of a sanitary napkin according to an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing a cross section taken along line AA of FIG.
  • FIG. 3 is
  • FIG. 7 is a view for explaining a region of the top sheet in which the recess is formed by the recess forming roll.
  • FIG. 8 is a view for explaining an upper stage roll of a drawing gear roll used for manufacturing a sanitary napkin according to an embodiment of the present invention.
  • FIG. 9 is a view for explaining a lower roll of a stretched gear roll used for producing a sanitary napkin according to an embodiment of the present invention.
  • FIG. 10 is a view for explaining a top sheet stretched by a stretching gear roll.
  • FIG. 11 is an electron micrograph of the skin contact surface of the top sheet in the sanitary napkin in which the top sheet contains avian C2L oil fatty acid glyceride.
  • FIG. 12 is a photomicrograph of menstrual blood with or without a blood modifying agent.
  • FIG. 13 is a diagram for explaining a method of measuring surface tension.
  • the liquid-supplied area is an area appropriately set in the liquid-permeable sheet according to the type of the absorbent article, use, etc., and the liquid-supplied area set in the liquid-permeable sheet
  • the position, area, and the like of the region are not particularly limited.
  • the liquid supply area may be set as an area substantially the same as the area to which the liquid is actually supplied, or may be set as an area larger than that, but it prevents the liquid from leaking out. From the point of view, it is preferable to set the region as a region larger than the region to which the liquid is actually supplied.
  • the stretchable area is a stretchable area by stretching the bellows.
  • the bellows portion has a repeating structure of a mountain fold portion and a valley fold portion, and is extendable in the surface direction and thickness direction of the liquid supply region in which the bellows portion is formed.
  • the bellows may have contractility in addition to extensibility. However, even if the bellows has contraction, depending on the material of the bellows, the number of the bellows, etc., the bellows does not completely contract to the original state, and is slightly stretched compared to the original state. May be maintained.
  • the flexible region is a region having an elastic restoring force (repulsive force) against deformation.
  • the flexible region may expand due to the force applied during deformation, but from the viewpoint of enhancing the elastic restoring force against deformation, it is preferable that the flexible region does not expand substantially due to the force applied during deformation.
  • the flexible region surrounds all or part of the periphery of the stretchable region.
  • the flexible region preferably surrounds 30 to 100% of the entire perimeter of the extensible region, more preferably 50 to 100%, and most preferably 100%.
  • the absorbent article of the present invention it is preferable that a plurality of stretchable regions having stretchable bellows be formed in the liquid supply region, and the flexible region surround each stretchable region (aspect 1).
  • the expansion of the extensible area that prevents the over-compression of the absorbent body and the elastic restoring force of the flexible area that prevents the deflection of the liquid-permeable sheet effectively occur.
  • the flexible region is formed in a mesh shape, and the stretchable region is formed inside each mesh (aspect 2).
  • the elastic recovery force of the flexible region that prevents the expansion of the extensible region that prevents over-compression of the absorber and the deflection of the liquid-permeable sheet is effectively generated.
  • the flexible region extends in a direction intersecting with the longitudinal direction of the absorbent article, and a substantially linear first region juxtaposed substantially parallel and a direction intersecting the first region. It is preferable to have a substantially linear second region extending in parallel and substantially parallel.
  • the elastic recovery force of the flexible region that prevents the expansion of the extensible region that prevents over-compression of the absorber and the deflection of the liquid-permeable sheet is effectively generated. In which a mesh-like flexible area is arranged.
  • a bellows portion is extended in the longitudinal direction of the absorbent article, juxtaposed in the width direction of the absorbent article, and mountain folds and valley folds in which the cross section along the width direction is corrugated. It is preferable to have a part (aspect 4).
  • the bellows part expands in the width direction and thickness direction of the absorbent article, Excessive compression of the absorber due to the convex deformation and the accompanying rewet are effectively prevented.
  • the liquid permeable hole is formed in the extensible region and the liquid permeable hole is not formed in the flexible region (aspect 5).
  • the liquid permeation hole is formed in the extensible area to which tension is not directly applied during convex deformation of the absorbent article, while the liquid permeation hole is not formed in the flexible area to which tension is directly applied. The tension prevents the liquid permeation holes from being extended and the absorber from being exposed.
  • a pressing groove is formed in the peripheral portion of the liquid supply area (aspect 6).
  • the squeeze groove is a recess formed by compressing and integrating the peripheral portion of the liquid supply region and the absorber.
  • the liquid-permeable sheet has an IOB of 0.00 to 0.60, a melting point of 45 ° C. or less, and a water solubility of 0.00 to 0.05 g in 100 g of water at 25 ° C. It is preferable to contain the blood modifying agent which has (Aspect 7).
  • the blood modifying agent which has (Aspect 7).
  • the absorption object of the absorbent article is menstrual blood
  • menstrual blood that has reached the liquid-permeable sheet is modified in contact with the blood modifying agent, so that the liquid-permeable sheet has a high viscosity. It is difficult for blood to remain, the stickiness of the liquid-permeable sheet is reduced, the sense of smoothness is improved, and the wearer is less likely to feel visually uncomfortable.
  • the blood modifying agent may be, for example, the following (i) to (iii): (I) hydrocarbons; (Ii) from a carbonyl group (-CO-) and an oxy group (-O-) inserted between (ii-1) a hydrocarbon moiety and (ii-2) a C-C single bond of the hydrocarbon moiety
  • the blood modifying agent may be, for example, the following (i ′) to (iii ′): (I ') hydrocarbons; (Ii ') (ii'-1) a hydrocarbon moiety, and (ii'-2) a carbonyl bond (-CO-), an ester bond (-COO) inserted between a C-C single bond of the hydrocarbon moiety A compound selected from the group consisting of-), a carbonate bond (-OCOO-), and an ether bond (-O-), having one or more same or different bonds; and (iii ') (iii'-) 1) A carbonyl bond (-CO-), an ester bond (-COO-), a carbonate bond (-OCOO) inserted between a hydrocarbon moiety and (iii'-2) a C-C single bond of the hydrocarbon moiety -), And one or more same or different bonds selected from the group consisting of an ether bond (-O-) and (iii'--
  • the blood modifying agent is, for example, the following (A) to (F):
  • the blood modifying agent is, for example, an ester of (a 1 ) chain hydrocarbon tetraol and at least one fatty acid, and an ester of (a 2 ) chain hydrocarbon triol and at least one fatty acid And (a 3 ) an ester of a chain hydrocarbon diol and at least one fatty acid, (b 1 ) an ether of a chain hydrocarbon tetraol and at least one aliphatic monohydric alcohol, (b 2 ) a chain hydrocarbon Ether of triol and at least one aliphatic monohydric alcohol, ether of (b 3 ) linear hydrocarbon diol and at least one aliphatic monohydric alcohol, (c 1 ) linear carbonization having four carboxyl groups hydrogen tetracarboxylic acid, hydroxy acids, esters of alkoxy acids or oxoacids, and at least one aliphatic monohydric alcohol, (c 2) 3 carboxyl groups Chain hydrocarbon tricarboxylic acid
  • the type and application of the absorbent article of the present invention are not particularly limited, but, for example, sanitary products and sanitary products such as sanitary napkins, panty liners, disposable diapers, incontinence pads, incontinence liners, sweat sheets, etc. These may be human or non-human animals such as pets.
  • the liquid to be absorbed by the absorbent article is not particularly limited, and examples thereof include liquid excrement and body fluid of the user.
  • an embodiment of the absorbent article of the present invention will be described by taking a sanitary napkin as an example.
  • the sanitary napkin 1 according to the first embodiment is between the liquid-permeable top sheet 2, the liquid-impermeable back sheet 3, and the top sheet 2 and the back sheet 3. And an absorber 4 provided on the
  • FIG. 1 is a schematic cross-sectional view, and the bellows portion 210 formed on the top sheet 2 is omitted.
  • the sanitary napkin 1 is worn by the user for the purpose of absorbing liquid excrement (especially menstrual blood).
  • the top sheet 2 is worn by the user such that the back sheet 3 is positioned on the user's skin side and the user's clothes (underwear) side.
  • the liquid excrement passes through the top sheet 2 to reach the absorber 4 and is absorbed and held by the absorber 4. Leakage of liquid excrement absorbed and held by the absorber 4 is prevented by the back sheet 3.
  • the top sheet 2 and the back sheet 3 have their longitudinal ends joined by the seal portions 7a and 7b to form the main body 11, and the ends in the width direction are
  • the substantially rectangular wing parts 12a and 12b which are joined by the seal parts 8a and 8b and extend from the main body part 11 in the width direction are formed.
  • the shape of the main body portion 11 can be appropriately changed as long as it conforms to the body of a woman, underwear and the like, and may be, for example, a substantially rectangular shape, a substantially elliptical shape, a substantially wedge shape or the like.
  • the longitudinal dimension of the main body portion 11 is usually 100 to 500 mm, preferably 150 to 350 mm, and the transverse dimension of the main body portion 11 is usually 30 to 200 mm, preferably 40 to 180 mm.
  • seal part 7a, 7b, 8a, 8b As a joining method by seal part 7a, 7b, 8a, 8b, embossing, an ultrasonic wave, a hot-melt-type adhesive agent etc. are mentioned, for example.
  • two or more bonding modes may be combined (for example, after bonding with a hot melt adhesive, embossing, etc.).
  • Examples of the embossing include a method in which the top sheet 2 and the back sheet 3 are passed together between the patterned embossing roll and the flat roll for embossing (a method called a so-called round seal). In this method, heating of the emboss roll and / or the flat roll softens the respective sheets, so that the seal portion tends to be clear.
  • a lattice-like pattern, a zigzag pattern, a wavelike pattern etc. are mentioned, for example.
  • the embossed pattern is preferably intermittently elongated so that the sanitary napkin 1 is less likely to bend at the boundary of the seal portion.
  • a hot melt adhesive for example, a rubber-based material such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS) or the like, or linear Pressure-sensitive adhesives or thermosensitive adhesives mainly composed of olefins such as low density polyethylene; water-soluble polymers (eg, polyvinyl alcohol, carboxyl methyl cellulose, gelatin etc.) or water-swellable polymers (eg, polyvinyl acetate, poly And water-sensitive adhesives made of sodium acrylate etc.).
  • the method of applying the adhesive include spiral coating, coater coating, curtain coater coating, summit gun coating and the like.
  • adhesive parts 9 a and 9 b are provided on the clothing side of the back sheet 3 forming the wing parts 12 a and 12 b, and the clothing side of the back sheet 3 forming the main body part 11 is An adhesive portion 9c is provided.
  • the sanitary napkin 1 is made by sticking the adhesive part 9c to the crotch part of the underwear, bending the wing parts 12a and 12b to the outer surface side of the underwear and sticking the adhesive parts 9a and 9b to the crotch part of the underwear. It is stably fixed to the underwear.
  • Examples of the adhesive contained in the adhesive parts 9a, 9b, 9c include styrene-ethylene-butylene-styrene block copolymer, styrene-butylene polymer, styrene-butylene-styrene block copolymer, styrene-isobutylene- Styrene polymers such as styrene copolymer; C5 petroleum resin, C9 petroleum resin, dicyclopentadiene petroleum resin, rosin petroleum resin, polyterpene resin, tackifier such as terpene phenol resin, etc .; Monomer plasticizers such as dibutyl and dioctyl phthalate; and polymer plasticizers such as vinyl polymers and polyesters.
  • the top sheet 2 is provided on the surface in contact with the skin of the user for the purpose of improving the touch when the user wears the sanitary napkin 1.
  • the top sheet 2 is made of a flexible material.
  • a flexible material is a material having an elastic restoring force (repulsive force) against deformation.
  • the flexible material may expand due to the force applied during deformation, but in order to increase the elastic recovery force against deformation, it is preferable that the flexible material does not expand substantially due to the force applied during deformation.
  • Examples of the flexible material include synthetic resins.
  • Examples of the synthetic resins include copolymers of olefin and other monomers such as acrylic acid ester and vinyl acetate; low density polyethylene, linear low density polyethylene And polyolefins such as high density polyethylene and polypropylene; polyesters such as polyethylene terephthalate; polyamides; cellulose acetate etc. Among them, copolymers of olefin and other monomers from the viewpoint of high flexibility and little irritation to the skin. And polyolefins are preferable.
  • the flexible material is a mixed material of two or more synthetic resins, for example, a mixed material of 20 to 60% of low density polyethylene, 30 to 60% of linear low density polyethylene and 5 to 20% of high density polyethylene It is also good.
  • the top sheet 2 is provided with an excrement supplied area 20a which receives supply of liquid excrement from the user and a peripheral area 20b located around the area.
  • the excrement supplied area 20a includes a first area 201 with which the user's excretory opening (for example, the labia minora, the labia majora, the vaginal opening, etc.) abuts, and a second area 202 located around the first area 201
  • the length of the excrement supplied area 20a is usually 50 to 200 mm, preferably 70 to 150 mm, and the width is usually 10 to 80 mm, preferably 20 to 50 mm.
  • the first area 201 is wider than the area where the user's excretory port actually abuts in order to improve the absorbability of the liquid excrement.
  • the second area 202 is disposed around the first area 201 in order to prevent leakage of liquid waste that has not been absorbed from the first area 201. Among the leaks of the liquid excrement that has not been absorbed from the first region 201, the second region 202 effectively prevents the leak from the width direction of the sanitary napkin 1 in particular.
  • the flexible region 22 is formed in a mesh shape substantially throughout the excrement receiving region 20a and the peripheral region 20b, and the inner side of each mesh is provided.
  • a stretchable region 21 is formed in the.
  • the stretchable region 21 is stretchable due to the stretching of the bellows portion 210, and the flexible region 22 is flexible (elastic recovery force against deformation) due to the flexible material constituting the top sheet 2.
  • the flexible region 22 is substantially flat and does not have stretchability due to a structure such as the stretchable region 21.
  • a bellows portion 210 having a repeated structure of a mountain fold portion and a valley fold portion is formed in the stretchable region 21, a bellows portion 210 having a repeated structure of a mountain fold portion and a valley fold portion is formed in the stretchable region 21.
  • the stretchable region 21 can be stretched in the width direction and in the thickness direction of the sanitary napkin 1 by stretching the mountain folds and valley folds of the bellows 210.
  • a convex portion on the upper side is a mountain fold portion and a convex portion on the lower side is a valley fold portion.
  • the mountain folds and valley folds of the bellows portion 210 extend in the longitudinal direction of the sanitary napkin 1 and are juxtaposed in the width direction of the sanitary napkin 1. .
  • the expansion of the bellows 210 prevents the over-compression of the absorber 4 (a sanitary napkin Stretching in the width direction of 1) effectively occurs.
  • the cross section of the bellows portion 210 along the width direction of the sanitary napkin 1 is substantially wavy.
  • the substantially wavy shape includes a shape in which a U-shaped curve is straight, a U-shaped is U-shaped, and a U-shaped is V-shaped.
  • the width of the top of the mountain fold and the width of the bottom of the valley fold are usually 0.1 to 2.0 mm, preferably 0.2 to 1.5 mm, and the height of the mountain fold and the valley fold
  • the depth of the ridge is usually 0.3 to 3.0 mm, preferably 0.5 to 1.5 mm
  • the widths of the tops of adjacent mountain folds and the width of the bottoms of adjacent valley folds are It is usually 0.3 to 3.0 mm, preferably 0.5 to 2.0 mm.
  • the bellows 210 may have contractility in addition to the extensibility. However, even if the bellows part 210 has contractility, depending on the material of the bellows part 210, the number of bellows, etc., the extended bellows part 210 does not completely shrink to the original state, and It may maintain a slightly stretched state than the state.
  • the flexible material constituting the top sheet 2 may be mixed with an elastomeric material.
  • the elastomer include thermoplastic elastomers of polyester type, urethane type, olefin type, styrene type and polyamide type, low density polyethylene using a metallocene catalyst, ethylene- ⁇ -olefin copolymer, combinations thereof and the like.
  • polyester-based elastomers include those containing an aromatic polyester in the hard segment and an amorphous polyether, aliphatic polyester, etc. as the soft segment, and as the urethane-based elastomer, for example, as a thermoplastic elastomer, Polyurethanes include polyesters, low molecular weight glycols, methylene bisphenyl isocyanate and the like, and as olefin elastomers, for example, random copolymers of ethylene and ⁇ -olefin, and random copolymers of ethylene, ⁇ -olefin and diene Styrene-based elastomers include, for example, block copolymers such as SEBS, SIS, SEPS, SBS, etc., and as polyamide-based elastomers, for example, hard segments And nylon or polyester or polyol as a soft segment.
  • polyurethanes include polyesters, low molecular weight glycols, methylene bisphenyl is
  • the flexible regions 22 extend in a direction intersecting the longitudinal direction of the sanitary napkin 1, and are substantially linear m substantially parallel regions (hereinafter referred to as “region B 1-n ”) extending in a direction intersecting “region A 1-m ” and region A 1-m and arranged substantially in parallel And the region A 1-m and the region B 1-n form a mesh by intersection.
  • region B 1-n substantially linear n regions
  • Angle alpha 1 of the area A 1-m intersects the longitudinal direction of the sanitary napkin 1 is generally 1 ° ⁇ ⁇ 1 ⁇ 90 ° , preferably 10 ° ⁇ ⁇ 1 ⁇ 80 ° , more preferably 30 ° ⁇ alpha 1 It is ⁇ 60 °.
  • Region B 1-n intersects the longitudinal direction of the sanitary napkin 1 the angle alpha 2 (where the angle region B 1-n crosses the area A 1-m and alpha 1 + alpha 2) is usually 1 ° It is ⁇ ⁇ 2 ⁇ 90 °, preferably 10 ° ⁇ ⁇ 2 ⁇ 80 °, and more preferably 30 ° ⁇ ⁇ 2 ⁇ 60 °.
  • ⁇ 1 and ⁇ 2 are selected so that ⁇ 1 + ⁇ 2 does not become 180 °.
  • the area A 1-m and the area B 1-n are located on both sides of the longitudinal direction of the sanitary napkin 1, so the sanitary napkin 1 is along the longitudinal direction
  • the elastic restoring force (repulsive force) of the flexible region 22 against the convex deformation is easily exhibited when bent and convexly deformed, and the mesh of each mesh necessary for forming the bellows 210 of the extensible region 21 The dimensions are secured.
  • the number (m) of the regions A 1-m and the number (n) of the regions B 1-n are not limited to the numbers shown in FIG. 1, and can be appropriately changed according to the size of the sanitary napkin 1 or the like.
  • m and n are the same or different numerical values, and the numerical range of m and n is usually 4 to 60, preferably 8 to 40, and more preferably 10 to 35.
  • the width of each of the area A 1-m and the area B 1-n is usually 0.1 to 5 mm, preferably 0.3 to 3 mm, and more preferably 0.5 to 2 mm.
  • the elastic restoring force (repulsive force) of the flexible area 22 against convex deformation is easily exhibited, The dimensions of each mesh necessary for forming the portion 210 are secured.
  • the shape of each mesh formed by the intersection of the area A 1-m and the area B 1-n is substantially a rhombus.
  • the shape of each mesh may be a substantially polygonal shape such as a substantially triangular shape, a substantially square shape, or a substantially pentagonal shape.
  • the substantially polygonal shape includes a shape in which a corner is rounded, a straight line forming one side is a curved line, or the like.
  • the area A 1-m and the area B 1-n may be curved, and the shape of each mesh may be substantially circular, elliptical, or the like by adding a change to the present embodiment.
  • the size of each mesh in the longitudinal direction and the width direction of the sanitary napkin 1 is usually 3 to 40 mm, preferably 5 to 30 mm, and more preferably 10 to 20 mm.
  • the elastic restoring force (repulsive force) of the flexible region 22 against convex deformation is easily exhibited, and the respective portions necessary for the formation of the bellows 210 of the extensible region 21 The mesh size is secured.
  • the total number of mountain folds and valley folds formed in each mesh is usually 3 or more, preferably 5 to 19, and more preferably 7 to 15. However, the total number of mountain folds and valley folds is odd.
  • the flexible region 22 surrounds the entire periphery of the extensible region 21, and the connection between adjacent extensible regions is interrupted by the flexible region 22.
  • a part of the periphery of the stretchable area 21 may be surrounded by the flexible area 22.
  • the flexible region 22 preferably surrounds 30% or more of the entire perimeter of the extensible region 21, and more preferably 50% or more.
  • the flexible region 22 is continuous with the periphery of the extensible region 21.
  • the flexible region 22 is continuous with the top of the mountain-folded portion of the bellows portion 210.
  • the flexible region 22 may be continuous with the lowermost portion of the valley fold portion of the bellows portion 210 by modifying the present embodiment.
  • the flexible region 22 is the uppermost portion of the mountain-folded portion of the bellows portion 210 because the touch of the top sheet 2 becomes smooth when the flexible region 22 is on the skin surface side. It is preferable that it is continuous with
  • the liquid permeable hole 26 is an extensible region 21 (in the bellows portion 210, the largest portion of the mountain-folded portion) in the excrement-supplied region 20 a of the top sheet 2 to which tension is not directly applied at the time of convex deformation.
  • the side part 25 which connects an upper part and the lowermost part of a valley fold part, it is not formed in the flexible area
  • the opening area of one liquid permeation hole 26 is preferably 0.001 to 1 mm 2 , more preferably 0.01 to 0.1 mm 2 . If the opening area of one liquid permeation hole 26 is smaller than 0.001 mm 2, it may be difficult for liquid excrement to permeate, and if it exceeds 1 mm 2 , the liquid excrement absorbed once in the absorbent body 4 is In some cases, the back sheet may pass back through the liquid-permeable holes 26 of the top sheet 2 or the concealability of the top sheet 2 may be reduced.
  • the ratio of the total opening area to the area of the top sheet 2, that is, the opening ratio of the top sheet 2 is preferably 5 to 20%.
  • the opening ratio of the top sheet 2 is less than 5%, the permeability of body fluid in the top sheet 2 may be deteriorated, and when the opening ratio of the top sheet 2 exceeds 20%, it is once absorbed by the absorber 4
  • the body fluid may return through the liquid permeation holes 26 of the top sheet 2 or the liquid waste absorbed by the absorber 4 through the liquid permeation holes 26 may be visible.
  • the thickness, basis weight and the like of the top sheet 2 are appropriately adjusted in view of the formability of the bellows portion 210 of the stretchable region 21, the flexibility of the flexible region 22, and the like.
  • the basis weight of the top sheet 2 is usually 10 g / m 2 or more, preferably 10 to 40 g / m 2 , more preferably 20 to 30 g / m 2 , and the thickness of the top sheet 2 is usually 0.01 to 3 And preferably 0.1 to 1.5 mm.
  • the top sheet 2 may contain an inorganic filler such as titanium oxide, barium sulfate, calcium carbonate or the like.
  • the top sheet 2 may be a laminated film.
  • the fiber assembly layer contains, for example, paper, which is an assembly of hydrophilic fibers, non-woven fabric and the like.
  • the non-woven fabric used as the fiber assembly layer is preferably a tissue.
  • the tissue refers to a thin paper having a basis weight of 10 g / m 2 or more and 20 g / m 2 or less to which wet strength is given mainly with kraft pulp, rayon or the like.
  • the thickness of the fiber assembly layer is preferably 0.1 to 0.5 mm.
  • the fiber assembly layer can impart hydrophilicity and flexibility to the top sheet 2.
  • the tissue When using a tissue in the fiber assembly layer, the tissue is cheaper than other paper and non-woven fabrics and is easy to procure because it is widely available in the market. Although the strength of the tissue layer is low, the strength of the top sheet 2 is secured by using it with the synthetic resin film layer.
  • the back sheet 3 is provided on the surface in contact with the clothes (underwear) of the user for the purpose of preventing the leakage of the liquid excrement absorbed by the absorber 4.
  • the back sheet 3 preferably has moisture permeability in addition to liquid impermeability in order to reduce stuffiness when worn.
  • the back sheet 3 is, for example, a non-woven fabric waterproofed, a synthetic resin (eg, polyethylene, polypropylene, polyethylene terephthalate etc.) film, a composite sheet of a non-woven fabric and a synthetic resin film (eg, non-woven fabric such as spunbond or spunlace).
  • compressed grooves 5a and 5b are formed in the peripheral portions of the first area 201 and the second area 202 of the excrement supplied area 20a, respectively. . Since the sanitary napkin 1 stably and convexly deforms starting from the squeezing grooves 5a and 5b, the expansion of the stretchable area 21 and the top sheet which prevent the excessive compression of the absorber 4 when the sanitary napkin 1 is convexly deformed The elastic restoring force of the flexible area 22 which effectively prevents the deflection of 2 is effectively generated.
  • the compressed grooves 5a and 5b are formed, for example, by compressing and integrating the peripheral portions of the first area 201 and the second area 202 of the excrement supplied area 20a and the absorber 4 by embossing using a heating roller. It is formed.
  • the compressed grooves 5a and 5b are respectively formed in the entire peripheral portion of the first area 201 and the second area 202 of the liquid receiving area 20a.
  • the compressed grooves 5a and 5b may be formed in parts of the peripheral portions of the first area 201 and the second area 202 of the liquid receiving area 20a, respectively.
  • Absorber 4 is an absorbent body 4a located on the back sheet 3 side of first area 201 of excrement supplied area 20a by compressed grooves 5a and 5b, and a back sheet of second area 202 of excrement supplied area 20a. It is divided into an absorber 4b located on the 3 side and an absorber 4c located on the back sheet 3 side of the peripheral region 20b.
  • the thickness of the excrement supplied area 20a is exposed in advance by the absorber 4a, and the convex deformation of the excrement supplied area 20a stabilized by the compressed grooves 5a and 5b can be induced. Therefore, the excrement supplied area 20a for the user The fit of the is improved.
  • the absorbent body 4b is higher in density than the absorbent body 4a, and it is easy to maintain its rigidity even after absorption of excrement, so that it is possible to prevent displacement of the entire sanitary napkin 1 after absorption of excrement.
  • an adhesive is provided between the first area 201 of the excrement supplied area 20a and the absorber 4a, and between the second area 202 of the excrement supplied area 20a and the absorber 4b.
  • the layer S1 is formed.
  • the adhesive layer S1 is an adhesive layer which releasably adheres the first area 201 and the second area 202 of the excrement supplied area 20a and the absorbers 4a and 4b, and when the sanitary napkin 1 is convexly deformed
  • the first area 201 and the second area 202 of the excrement supplied area 20a are separated from the absorbers 4a and 4b and separated from each other.
  • the bonding surface of the first region 201 of the excrement supplied region 20a and the absorber 4a, and the bonding surface of the second region 202 of the excrement supplied region 20a and the absorber 4b are substantially adhered.
  • the agent layer S1 is formed, the present embodiment may be modified to form the adhesive layer S1 on a part of the joint surface, or the adhesive layer S1 may not be formed.
  • an adhesive layer S2 is formed between the peripheral region 20b and the absorber 4c.
  • the adhesive layer S2 is an adhesive layer having higher adhesive strength than the adhesive layer S1.
  • the adhesive layer S2 may prevent peeling between the peripheral region 20b and the absorber 4c at the time of deformation of the sanitary napkin 1, as long as the adhesive strength is greater than that of the adhesive layer S1, or even peeling may be permitted. Good.
  • the adhesive layer S2 is formed on substantially the entire bonding surface between the peripheral region 20b and the absorber 4c. However, a modification is added to the present embodiment, and the adhesive layer S2 is formed on a part of the bonding surface. May be formed.
  • the adhesive contained in the adhesive layers S1, S2 is preferably a hot melt adhesive, and as the hot melt adhesive, for example, styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS)
  • SEBS styrene-ethylene-butadiene-styrene
  • SBS styrene-butadiene-styrene
  • a pressure-sensitive adhesive or thermosensitive adhesive mainly composed of a rubber system such as styrene-isoprene-styrene (SIS) or an olefin system such as linear low density polyethylene; water-soluble polymers (for example, And water-sensitive adhesives made of water-swellable polymers (for example, polyvinyl acetate, sodium polyacrylate etc.).
  • a heat-sensitive adhesive having a tackiness relatively lower than that of a pressure-sensitive adhesive is preferable in that the user hardly feels
  • the adhesive strength of the adhesive layers S1 and S2 can be adjusted, for example, by the type of adhesive, the coating weight, and the like.
  • a low-tack adhesive is selected as the adhesive contained in the adhesive layer S1, and the tackiness is higher than that as the adhesive contained in the adhesive layer S2.
  • An adhesive with a large size is selected.
  • the low-tack adhesive includes rubber-based or olefin-based hot melt adhesives, but in the manufacturing process of the sanitary napkin 1, carbides are less likely to be generated even when heated for a long time in a tank From the point of view, rubber is preferred.
  • the level of tackiness of the adhesive can be adjusted, for example, by the presence or absence of the addition of paraffin wax as an adhesion regulator, or the increase or decrease of the addition amount.
  • the tackiness of the adhesive decreases with the addition of paraffin wax as an adhesion modifier or by increasing the amount added.
  • low tack hot melt adhesive for example, SBS (10 to 30%), paraffin oil (5 to 15%) as a viscosity modifier, paraffin wax (5 as an adhesion modifier) Melt mixed with ⁇ 30%), hydrogenated dicyclopentadiene hydrocarbon resin (40 to 60%) as a tackifier, and other components (in trace amounts) such as an antioxidant and a UV absorber
  • SBS SBS (20 to 40%)
  • paraffin oil 10 to 20%
  • hydrogenated dicyclopentadiene type as a tackifier
  • What melt-mixed hydrocarbon resin (40 to 60%) and other components (trace amount) such as an antioxidant and a UV absorber may be mentioned.
  • the amount of adhesive layer S1 is usually 0 to 30 g / m 2 , preferably 2 to 20 g / m 2 , and more preferably 3 to 10 g / m 2
  • the basis weight of the adhesive layer S2 is usually 2 to 30 g / m 2 , preferably 3 to 20 g / m 2 , and more preferably 5 to 10 g / m 2 .
  • Examples of the method of forming the adhesive layers S1 and S2 include spiral coating, coater coating, curtain coater coating, summit gun coating, and the like.
  • the adhesive may be applied to either the top sheet 2 or the absorber 4, but when the adhesive is applied to the top sheet 2, the top sheet 2 is a film. Therefore, non-contact type spiral coating or summit gun coating is preferable.
  • the adhesive strength of the adhesive layer S2 is larger than that of the adhesive layer S1.
  • the adhesive strength of the adhesive layer S2 is usually 110% or more, preferably 110 to 1000%, more preferably 150 to 500% of the adhesive layer S1.
  • the stretchable area 21 of the excrement supplied area 20a is easily expanded in the thickness direction of the sanitary napkin 1 and easily separated from the absorbent bodies 4a and 4b.
  • adhesion strength is the peeling maximum strength with the member joined to the top sheet 2 through the adhesive bond layer.
  • the peel strength between the top sheet 2 and the non-woven fabric (not a broken number of the member but a peeled number).
  • the adhesive strength between the peripheral region 20b and the absorber 4c by the adhesive layer S2 is usually 0.4 N / 25 mm or more, preferably 0.5 to 5 N /
  • the adhesion strength between the first region 201 of the excrement supplied region 20a and the absorber 4a by the adhesive layer S1 and the adhesion strength between the second region 202 of the excrement supplied region 20a and the absorber 4b are as follows. It is usually 0.3 N / 25 mm or less, preferably 0 to 0.3 N / 25 mm. In addition, when adhesive strength is 0, it is a case where the adhesive bond layer is not formed.
  • Example 1 and through-air bonded nonwoven fabric 30 g / m 2 as a topsheet (numerical example of the peripheral area 20b), between the air-through nonwoven fabric 30 g / m 2 as a second sheet, spiral coating a normal hot melt adhesive
  • the maximum peel strength is 0.56 N / 25 mm when applied at 5 g / m 2 by a tool.
  • Example 2 (numerical example of excrement supplied area 20a) Low tack hot melt adhesion between 30 g / m 2 of air-through non-woven fabric as top sheet and 30 g / m 2 of air-through non-woven fabric as second sheet The maximum peel strength is 0.11 N / 25 mm when the agent is applied at 5 g / m 2 by spiral coating.
  • Example 3 (numerical example of peripheral region 20b) A low-tack hot melt adhesive is spirally coated between 30 g / m 2 of air-through nonwoven fabric as a top sheet and 30 g / m 2 of air-through nonwoven fabric as a second sheet.
  • the absorber 4 has an absorbent material layer.
  • the absorbent material contained in the absorbent material layer is not particularly limited as long as the user can absorb liquid excrement.
  • examples of the absorbent material include water-absorbent fibers and highly water-absorbent materials (for example, highly water-absorbent resin, highly water-absorbent fibers, etc.).
  • the absorbent material layer may contain an antiblocking agent, an ultraviolet light absorber, a thickening / branching agent, a matting agent, a coloring agent, and various other improving agents.
  • water-absorbent fibers include wood pulps obtained from softwood or hardwood as raw materials (for example, mechanical pulps such as ground pulp, refiner ground pulp, thermomechanical pulp, chemithermomechanical pulp, etc .; kraft pulp, sulfide pulp, alkaline pulp, etc. Semi-chemical pulp, etc.); mercerized pulp obtained by subjecting wood pulp to chemical treatment or crosslinked pulp; non-wood pulp such as bagasse, kenaf, bamboo, hemp, cotton (eg cotton linters); rayon, fibril Regenerated celluloses such as rayon; semi-synthetic celluloses such as acetate and triacetate may, for example, be mentioned, but ground pulp is preferred from the viewpoint of low cost and ease of molding.
  • mechanical pulps such as ground pulp, refiner ground pulp, thermomechanical pulp, chemithermomechanical pulp, etc .
  • kraft pulp, sulfide pulp alkaline pulp, etc.
  • Semi-chemical pulp, etc. mercerized pulp obtained by subjecting wood pulp to chemical treatment
  • the superabsorbent material examples include starch-based, cellulose-based, synthetic polymer-based superabsorbent materials.
  • starch-based or cellulose-based superabsorbent materials include starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, crosslinked products of sodium carboxymethylcellulose, etc.
  • Synthetic polymers examples include polyacrylates, polysulfonates, anhydrides maleates, polyacrylamides, polyvinyl alcohols, polyethylene oxides, polyaspartates and polyglutamates.
  • Superabsorbent Polymers SAP
  • SAP polyalginate-based, starch-based, and cellulose-based superabsorbent polymers
  • polyacrylate-based especially, sodium polyacrylate-based
  • SAP superabsorbent Polymers
  • the shape of the superabsorbent material include particles, fibers, scaly and the like, and in the case of particles, the particle size is preferably 50 to 1000 ⁇ m, more preferably 100 to 600 ⁇ m. .
  • the amount of the highly water-absorptive material contained in the absorbent material layer can be appropriately changed according to the characteristics (for example, absorbability, lightness, etc.) which the sanitary napkin 1 should have, but generally 0 in the absorbent material layer.
  • the amount is about 50% by mass, preferably 3 to 30% by mass, and more preferably 5 to 15% by mass.
  • the thickness, the fabric weight, the density and the like of the absorbent material layer can be appropriately changed in accordance with the characteristics (for example, the absorbability, the lightness and the like) which the sanitary napkin 1 should have.
  • the thickness of the absorbent material layer is usually 1 to 20 mm, preferably 2 to 15 mm, more preferably 2 to 10 mm, and the basis weight is usually 100 to 1000 g / m 2 , preferably 150 to 700 g / m 2 , more preferably Is 200 to 500 g / m 2 , and the density is usually 0.005 to 0.5 g / cm 3 , preferably 0.01 to 0.2 g / cm 3 , and more preferably 0.01 to 0.1 g / cm 3 It is three .
  • the thickness, the fabric weight, the density, and the like of the absorbent material layer may change (for example, the thickness of the absorbent material layer decreases, and the fabric weight and density increase).
  • the absorber 4 may be covered with a covering material, it is preferable that the part (absorber 4a, 4b) located in the back sheet 3 side of the excretion provision area
  • the coating material is not particularly limited as long as it has liquid permeability and absorbent retention, but in terms of low cost and absorbent retention, preferred is a tissue which is mainly formed of crushed pulp and formed by a wet method.
  • the absorbers 4a and 4b are less likely to be pressed by the excrement supplied region 20a, and excessive compression of the absorbers 4a and 4b due to the convex deformation of the sanitary napkin 1 and rewet associated therewith are prevented. .
  • the excrement supplied region 20a since there is a peripheral region 20b adhering to the absorber 4c by the adhesive layer S2 having a larger adhesive strength than the adhesive layer S1 around the excrement supplied region 20a, the excrement supplied region 20a is present.
  • the stretchable region 21 is easily stretched in the thickness direction of the sanitary napkin 1 and easily separated from the absorbent bodies 4a and 4b.
  • the adhesive is applied between the first area 201 of the excrement supplied area 20a and the absorber 4a and between the second area 202 of the excrement supplied area 20a and the absorber 4b.
  • a blood modifying agent is applied to the surface of the top sheet 2. The menstrual blood discharged to the top sheet 2 is rapidly transferred from the top sheet 2 to the absorbent 4 and absorbed by the absorbent 4 because its viscosity and surface tension are lowered by the blood modifying agent.
  • menstrual blood absorption speed of the absorber 4 As menstrual blood absorption speed of the absorber 4 is improved, menstrual blood having high viscosity is less likely to remain on the top sheet 2, so that the stickiness of the top sheet 2 is reduced and the surface dryness of the top sheet 2 is improved. It makes it difficult for the wearer to feel visually uncomfortable. Furthermore, the menstrual blood discharged to the top sheet 2 is prevented from leaking from the width direction side of the sanitary napkin 1c.
  • the area to which the blood modifying agent is applied may be the entire surface or a part of the top sheet 2, but at least includes an area that abuts on the user's excretory port (vaginal port). preferable.
  • the blood modifying agent is preferably attached to the top sheet 2 in the form of droplets or particles so as not to block the liquid permeation holes of the top sheet 2.
  • the coating weight of the blood modifying agent on the top sheet 2 is preferably 1 to 30 g / m 2 , more preferably 3 to 10 g / m 2 .
  • the coating weight of the blood modifying agent is smaller than 1 g / m 2 , it may be difficult to stably apply the blood modifying agent to the top sheet 2, and the coating weight of the blood modifying agent is 30 g / m. If it is larger than m 2 , the top sheet 2 may be nullified.
  • a method of applying the blood modifying agent for example, after heating to a desired temperature, there is a method of applying using a contact type coater such as a slot coater, a non-contact type coater such as a spray coater, a curtain coater, or a spiral coater. It can be mentioned. From the viewpoint of being able to uniformly disperse the blood modifying agent in the form of droplets on the top sheet 2 and the point that the top sheet 2 is not damaged, a method of coating using a noncontact coater is preferable.
  • the point of time when the blood modifying agent is applied to the top sheet 2 is not particularly limited, but it is preferable to apply the blood modifying agent to the top sheet 2 in the manufacturing process of the sanitary napkin 1 from the viewpoint of suppressing equipment investment.
  • a blood modifying agent is applied to the top sheet 2 in the manufacturing process of the sanitary napkin 1
  • the blood modifying agent is applied to the top sheet 2 in a process close to the final process in terms of suppression of reduction of the blood modifying agent.
  • the blood modifying agent may be applied to the top sheet 2 immediately before the packaging step of the sanitary napkin 1.
  • the region of the top sheet 2 to which the blood modifying agent is applied may be coated with a hydrophilic agent, a water repellent agent or the like, or may be rendered hydrophilic by corona treatment, plasma treatment or the like.
  • a hydrophilic agent mainly water repellent agent or the like
  • the hydrophilic portion and the lipophilic portion coexist in the blood modifying agent application region sparsely, and the hydrophilic component of menstrual blood (mainly plasma And the lipophilic component (mainly blood cells) are rapidly transferred from the top sheet 2 to the absorber 4).
  • the details of the blood modifying agent will be described in separate items.
  • the manufacturing method according to the present embodiment includes a step of forming absorber 4 (step 1A), a step of laminating top sheet 2 on absorber 4 (step 2A), and a step of forming compressed grooves in the laminate (steps) 3A), a step of laminating the back sheet 3 (step 4A), a step of cutting out the sanitary napkin 1 (step 5A), and a step of applying a blood modifying agent to the sanitary napkin 1 (step 6A)
  • the manufacturing apparatus 100 shown in FIG. 5 is used.
  • Recesses 124 are formed on the circumferential surface of the suction drum 120 rotating in the machine direction MD at a required pitch in the circumferential direction as a mold for packing the absorber material 122.
  • the suction portion 126 acts on the concave portion 124, and the absorber material 122 supplied from the material supply portion 121 is vacuum suctioned to the concave portion 124.
  • the material supply unit 121 is formed to cover the suction drum 120, and the material supply unit 121 supplies the absorber material 122 to the recess 124 by air conveyance, and the absorber 4 is formed in the recess 124. Ru.
  • the absorber 4 formed in the recess 124 is transferred onto the carrier sheet 110 traveling in the machine direction MD.
  • Step 2A The top sheet 2 is laminated on the absorber 4 to form a laminate 262. At this time, on the surface of the top sheet 2 corresponding to the excrement supplied area 20a, an adhesive layer S1 is formed, which releasably adheres the excrement supplied area 20a and the absorbent body An adhesive layer S2 having a higher adhesive strength than the adhesive layer S1 is formed on the surface corresponding to. The adhesive layer S1 may not be formed on the surface corresponding to the excrement supplied area 20a.
  • Step 3A When the laminate 262 passes between the upper roll 131 and the lower roll 132 of the embossing device 130, a pressing groove is formed in the laminate 262. On the surface of the outer periphery of the upper roll 131, a convex portion (not shown) having a shape corresponding to the pressing groove is provided.
  • the lower roll 132 is a plain roll whose outer peripheral surface is smooth.
  • the compressed grooves 5a and 5b are formed on the periphery of the first area 201 and the second area 202 of the excrement supplied area 20a in the top sheet 2, respectively, and the excrement covered by the compressed grooves 5a and 5b.
  • the peripheral portions of the first area 201 and the second area 202 of the supply area 20 a are integrated with the absorber 4.
  • Step 4A The back sheet 3 supplied from the back sheet roll 140 is laminated via the adhesive layer on the lower side (opposite side of the top sheet) of the laminated body 134 in which the compressed grooves are formed. A continuum 144 is formed.
  • Step 5A The continuous body 144 of the sanitary napkin 1 is cut using the cutter 150, and the sanitary napkin 1 is cut out.
  • Step 6A The blood modifying agent spray is applied to the central area of the sanitary napkin 1 using the blood modifying agent applying spray 160 to form a blood modifying agent layer on the surface of the top sheet 2.
  • the blood modifying agent layer is preferably formed in at least the first region 201 of the excrement supplied region 20 a of the top sheet 2.
  • the blood modifying agent is applied after the sanitary napkin 1 is cut out, but may be applied at any stage before cutting out, or may be applied in the manufacturing process of the top sheet 2 described later Good. In order to prevent the applied blood modifying agent from flowing down during the production, it is preferable to apply the blood modifying agent at the downstream stage of the production process, for example, immediately before packaging the sanitary napkin 1.
  • the manufacturing method of the sanitary napkin 1 includes the steps of forming the seal portions 7a, 7b, 8a and 8b, the steps of forming the adhesive portions 9a, 9b and 9c, and the like, in addition to the steps 1A to 6A.
  • ⁇ Method of Manufacturing Liquid Permeable Sheet> an embodiment of a method of manufacturing a liquid-permeable sheet of the present invention will be described by taking a method of manufacturing the top sheet 2 of the sanitary napkin 1 as an example.
  • the manufacturing method which concerns on this embodiment includes the process (1B) of forming a recessed part in a synthetic resin film sheet, and the process (2B) of carrying out the gear stretch of a synthetic resin film sheet.
  • Step 1B As shown in FIG. 5, the synthetic resin film sheet 212 supplied from the roll 210 passes through the recess forming roll 220, and a recess 2141 is formed in the synthetic resin film sheet 212 (see FIG. 7).
  • the recess forming roll 220 comprises a knurling roll 221 and a preheating roll 222 having a smooth surface.
  • FIG. 6A and 6B show an example of the knurled roll 221.
  • FIG. FIG. 6 (a) is a view showing the entire knurled roll 221
  • FIG. 6 (b) is an enlarged view of a portion 223 having irregularities on the outer peripheral surface of the knurled roll 221.
  • FIG. 6C shows an example of the preheating roll 222 having a smooth surface.
  • a grid-like convex portion 224 is provided on the surface 223 of the knurled roll 221.
  • a rhombus recess 225 is formed on the surface of the knurled roll 221.
  • the shape of the recessed part 225 of the knurl roll 221 is not limited to a rhombus, You may be shapes, such as a square, a rectangle, a parallelogram, a trapezoid, a triangle, a hexagon.
  • the distance between the center lines of the convex parts 224 arranged in parallel in the lattice-like convex parts 224, that is, the pitch of the lattice-like convex parts 224 is preferably 0.2 to 10 mm, more preferably 0.4 to 2 mm.
  • the width of the grid-like convex part 224 is preferably 0.01 to 1 mm, more preferably 0.03 to 0.1 mm.
  • the length of one side of the rhombic recess 225 is preferably 0.1 to 5 mm, more preferably 0.2 to 1 mm. These ranges are preferable at the point which improves the formation property of the recessed part to a synthetic resin film sheet.
  • the preheated roll 222 having a smooth surface is maintained at a temperature of 70 ° C. to 100 ° C. to heat the supplied synthetic resin film sheet 212. As a result, the synthetic resin film sheet 212 becomes soft and easy to mold.
  • Step 2B By passing the synthetic resin film sheet 214 having the concave portion formed in the drawing gear roll 230, the area of the synthetic resin film sheet 214 corresponding to the stretchable area 21 of the top sheet 2 is bent to form the bellows 210.
  • the synthetic resin film sheet 216 is produced.
  • the bellows portion 210 is extended in the machine direction (MD) and arranged in parallel in the width direction, and the cross-sectional shape along the width direction is a combination of substantially U-shaped curves It is wavy.
  • the bellows 210 extending in the machine direction is interrupted at a plurality of locations. That is, in the synthetic resin film sheet 216, the bellows part 210 is discontinuously formed, and the synthetic resin film sheet 214 is not bent in the discontinuous part. This discontinuous portion corresponds to the flexible area 22 of the top sheet 2.
  • the drawing gear roll 230 includes an upper roll 231 and a lower roll 232.
  • 8 (a) is a view for explaining the upper roll 231 of the drawing gear roll 230
  • FIG. 8 (b) is a view for explaining the gear teeth 233 arranged on the outer peripheral surface of the upper roll 231.
  • FIG. 8 (c) is a cross-sectional view taken along the line BB in FIG. 8 (b).
  • the gear teeth 233 extend discontinuously in the circumferential direction of the upper roll 231. That is, the gear teeth 233 extending in the circumferential direction of the upper roll 231 are interrupted at multiple points along the way. Discontinuous portions corresponding to the flexible regions 22 of the top sheet 2 are formed by the portions 234 where the gear teeth 233 are disconnected.
  • the portions 234 where the gear teeth 233 are disconnected are arranged on a straight line in a direction oblique to the direction in which the gear teeth 233 extend.
  • the width of the gear teeth 233 is, for example, 0.3 to 0.5 mm, and the distance between the centers of adjacent gear teeth 233 is, for example, 1.0 to 1.2 mm.
  • FIG. 9A is a view for explaining the lower roll 232 of the drawing gear roll 230
  • FIG. 9B is a view for explaining the gear teeth 235 arranged on the outer peripheral surface of the lower roll 232.
  • FIG. 9 (c) is a cross-sectional view taken along the line CC of FIG. 9 (b).
  • the gear teeth 235 extend in the circumferential direction of the lower roll 232.
  • the lower roll 232 is not interrupted at multiple points along the way.
  • the width of the gear teeth 235 is, for example, equal to the width of the gear teeth 233 of the upper roll 231, and the distance between the centers of adjacent gear teeth 235 is, for example, equal to the distance between the centers of the gear teeth 233 of the upper roll 231.
  • the radial length of the upper roll 231 at the portion where the gear teeth 233 of the upper roll 231 and the gear teeth 235 of the lower roll 232 are engaged, that is, the biting depth is, for example, 1.25 mm.
  • the gap between the gear teeth 233 of the upper roll 231 and the gear teeth 235 of the lower roll 232 when the gear teeth 233 of the upper roll 231 and the gear teeth 235 of the lower roll 232 mesh with each other is, for example, 0.25 to It is 0.45 mm.
  • the liquid permeation holes 26 (see FIG. 3) of the top sheet 2 are in the area 2143 (see FIG. 7) where the concave portions 2141 of the synthetic resin film sheet 214 are formed. Corresponding openings are formed.
  • the synthetic resin film sheet 214 is largely drawn at a portion 236 where the gear teeth 233 of the upper roll 231 and the gear teeth 235 of the lower roll 232 are engaged.
  • the synthetic resin film sheet 214 is thinner at the part where the concave part 2141 (see FIG. 7) is formed in the above concave part forming step, and the part where the scratch is given by the grid-like convex part 224 of the knurling roll 221 Therefore, the strength is weak, and the recess 2141 of the synthetic resin film sheet 214 is broken when it is stretched. Therefore, in the stretched portion 236 of the synthetic resin film sheet 214, the recess 2141 of the synthetic resin film sheet 214 is torn, and the torn portion of the synthetic resin film sheet 214 is expanded to form an opening.
  • the synthetic resin film sheet 214 is not stretched so much at portions 237 and 238 where the gear teeth 233 of the upper roll 231 and the gear teeth 235 of the lower roll 232 are not engaged. For this reason, in the portions 237 and 238 where the gear teeth 233 of the upper roll 231 and the gear teeth 235 of the lower roll 232 in the synthetic resin film sheet 214 are not engaged, even if the synthetic resin film sheet 214 passes the stretching gear roll 230, The recess 2141 formed in the above-described recess forming step is not broken and does not become an opening.
  • the blood modifying agent of the present invention has an aqueous solubility of about 0.00 to about 0.05 g in an IOB of about 0.00 to about 0.60, a melting point of about 45 ° C. or less, and 100 g of water at 25 ° C. Is a blood modifying agent.
  • IOB Inorganic Organic Balance
  • IOB inorganic Organic Balance
  • the IOB is about 0.00 to about 0.60, preferably about 0.00 to about 0.50, and about 0.00 to about 0.40. It is more preferred that there be from about 0 to about 0.30. It is believed that the lower the IOB, the higher the organicity and the higher the affinity to blood cells.
  • the "melting point” means the peak top temperature of an endothermic peak when changing from solid state to liquid state when measured at a temperature rising rate of 10 ° C./min in a differential scanning calorimeter.
  • the melting point can be measured, for example, using a DSC-60 type DSC measurement apparatus manufactured by Shimadzu Corporation.
  • the blood modifying agent of the present invention may be liquid or solid at room temperature, as long as it has a melting point of about 45 ° C. or less, ie, even if the melting point is about 25 ° C. or more, or about 25 ° C. It may be less and may have a melting point such as, for example, about -5.degree. C., about -20.degree.
  • the basis for the melting point of the blood modifying agent of the present invention to be about 45 ° C. or less will be described later.
  • the melting point of the blood modifying agent of the present invention its vapor pressure is preferably low.
  • the vapor pressure of the blood modifying agent of the present invention is preferably about 0 to about 200 Pa, more preferably about 0 to about 100 Pa, and about 0 to about 10 Pa at 25 ° C. (1 atm). Is even more preferred, about 0 to about 1 Pa is even more preferred, and about 0.0 to about 0.1 Pa is even more preferred.
  • the vapor pressure is preferably about 0 to about 700 Pa, more preferably about 0 to about 100 Pa at 40 ° C. (1 atm).
  • the vapor pressure is high, it may be vaporized during storage, which may cause problems such as a decrease in the amount of blood modifying agent and an odor when worn.
  • the melting point of the blood modifying agent of the present invention can be used properly depending on the weather, the length of wearing time, and the like. For example, in areas where the average temperature is less than about 10 ° C, menstrual blood may be excreted and then cooled by the ambient temperature by employing a blood modifying agent having a melting point of less than about 10 ° C. It is believed that blood modifying agents can stably modify blood.
  • the melting point of the blood modifying agent of the present invention is preferably higher in the range of 45 ° C. or less. It is because it is hard to be affected by sweat, friction at the time of wearing, etc., and it is difficult for the blood modifying agent to move even when worn for a long time.
  • dissolving includes cases where the sample is completely dissolved in deionized water to form a homogeneous mixture and cases where the sample is completely emulsified. “Complete” means that there is no clump of sample in deionized water.
  • the surface of the top sheet is coated with a surfactant for the purpose of changing blood surface tension and the like to rapidly absorb the blood.
  • the surfactant generally has high water solubility
  • the surfactant-coated top sheet is compatible with hydrophilic components (such as plasma) in the blood, rather the blood remains on the top sheet.
  • hydrophilic components such as plasma
  • the blood modifying agent of the present invention is considered to be able to be rapidly transferred to the absorber without leaving blood on the top sheet unlike the conventionally known surfactants because the water solubility is low.
  • solubility in 100 g of water at 25 ° C. may be simply referred to as “water solubility”.
  • the weight average molecular weight means a value in terms of polystyrene, which is determined by gel permeation chromatography (GPC).
  • GPC measurement conditions include the following. Model: High-performance liquid chromatogram Lachrom Elite manufactured by Hitachi High-Technologies Corporation Column: Showa Denko KK SHODEX KF-801, KF-803 and KF-804 Eluent: THF Flow rate: 1.0 mL / min Implanted volume: 100 ⁇ L Detection: RI (differential refractometer)
  • the weight average molecular weight described in the Example of this specification is measured based on the said conditions.
  • the blood modifying agent of the present invention comprises the following (i) to (iii), (I) Hydrocarbons, (Ii) from a carbonyl group (-CO-) and an oxy group (-O-) inserted between (ii-1) a hydrocarbon moiety and (ii-2) a C-C single bond of the above-mentioned hydrocarbon moiety
  • hydrocarbon means a compound consisting of carbon and hydrogen, and is a chain hydrocarbon, for example, paraffinic hydrocarbon (also referred to as alkane not containing double bond and triple bond) Olefinic hydrocarbons (containing one double bond, also referred to as alkenes), acetylenic hydrocarbons (containing one triple bond, also called alkynes), and a group consisting of double bonds and triple bonds And hydrocarbons containing two or more bonds selected from the following, as well as cyclic hydrocarbons such as aromatic hydrocarbons and alicyclic hydrocarbons.
  • paraffinic hydrocarbon also referred to as alkane not containing double bond and triple bond
  • Olefinic hydrocarbons containing one double bond, also referred to as alkenes
  • acetylenic hydrocarbons containing one triple bond, also called alkynes
  • hydrocarbons containing two or more bonds selected from the following, as well as cyclic hydrocarbons such as aromatic hydrocarbons and alicyclic hydrocarbons.
  • the above hydrocarbon is preferably a chain hydrocarbon and an alicyclic hydrocarbon, more preferably a chain hydrocarbon, a paraffin hydrocarbon, an olefin hydrocarbon and two double bonds. It is more preferable that it is the hydrocarbon (it does not contain a triple bond) which contains above, and it is still more preferable that it is paraffin type hydrocarbon.
  • the chained hydrocarbons include straight chained hydrocarbons and branched hydrocarbons.
  • each oxy group (—O—) is not adjacent. Accordingly, the compounds (ii) and (iii) do not include compounds having a continuous oxy group (so-called peroxides).
  • At least one hydrogen atom of the hydrocarbon moiety is a hydroxyl group (-) rather than a compound in which at least one hydrogen atom of the hydrocarbon moiety is substituted with a carboxyl group (-COOH).
  • Compounds substituted with OH) are preferred.
  • Table 1 since the carboxyl group binds to metals and the like in blood, and the inorganic value greatly increases from 150 to 400 or more, the blood modifying agent having a carboxyl group is used at the time of use This is because the IOB value may exceed about 0.60 and the affinity to blood cells may be reduced.
  • the blood modifying agent of the present invention comprises the following (i ') to (iii'), (I ') hydrocarbons, (Ii ') (ii'-1) a hydrocarbon moiety, and (ii'-2) a carbonyl bond (-CO-), an ester bond (-COO) inserted between a C-C single bond of the above-mentioned hydrocarbon moiety -), A compound having one or more same or different bonds selected from the group consisting of carbonate bond (-OCOO-) and ether bond (-O-), and (iii ') (iii'-) 1) Carbonyl bond (-CO-), ester bond (-COO-), carbonate bond (-OCOO) inserted between the hydrocarbon moiety and the C-C single bond of the above-mentioned hydrocarbon moiety (iii'-2) -), And a carboxyl group (iii'-3) which substitutes a hydrogen atom of the above-mentioned hydrocarbon mo
  • the blood modifying agent of the present invention contains about 1.8 or less carbonyl bonds (-CO-) and 2 ester bonds (-COO-) per 10 carbon atoms in the hydrocarbon moiety.
  • -CO- carbonyl bonds
  • -COO- 2 ester bonds
  • about 6 or less ether bond (-O-) about 0.8 or less carboxyl group (-COOH)
  • It can be a compound having about-1.2 or less -OH).
  • the blood modifying agent of the present invention is any of the following (A) to (F), (A) A compound having (A1) a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety, (A2) a chain hydrocarbon moiety, and the above chain Ester with a compound having one carboxyl group replacing the hydrogen atom of the cyclic hydrocarbon moiety, (B) A compound having (B1) a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety, (B2) a chain hydrocarbon moiety, and the above chain Ether with a compound having one hydroxyl group replacing the hydrogen atom of the cyclic hydrocarbon moiety, (C) a carboxylic acid, hydroxy acid, alkoxy acid or oxo acid containing (C1) a chain hydrocarbon moiety and 2 to 4 carboxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety; C2) an ester of a compound having a chain hydrocarbon
  • a compound having (A1) a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety, (A2) a chain hydrocarbon moiety, and the above chain Ester with a compound having one carboxyl group replacing the hydrogen atom of the cyclic hydrocarbon moiety (hereinafter sometimes referred to as “compound (A)”) has the above-described IOB, melting point and water solubility And all hydroxyl groups may not be esterified.
  • (A1) a compound having a chain hydrocarbon portion and 2 to 4 hydroxyl groups replacing the hydrogen atom of the above chain hydrocarbon portion (hereinafter sometimes referred to as “compound (A1)”)
  • chain hydrocarbon tetraols such as alkane tetraols such as pentaerythritol
  • chain hydrocarbon triols such as alkanetriols such as glycerin
  • chain hydrocarbon diols such as alkane diols such as Glycol is mentioned.
  • Examples of (A2) a compound having a chain hydrocarbon portion and one carboxyl group replacing the hydrogen atom of the above chain hydrocarbon portion include, for example, And compounds in which one hydrogen atom on a hydrocarbon is substituted with one carboxyl group (—COOH), such as a fatty acid.
  • Examples of the compound (A) include an ester of (a 1 ) chain hydrocarbon tetraol and at least one fatty acid, an ester of (a 2 ) chain hydrocarbon triol and at least one fatty acid, and (a 3 And esters of linear hydrocarbon diols and at least one fatty acid.
  • the ester of the above linear hydrocarbon tetraol and at least one fatty acid may be, for example, the following formula (1): Tetraester of pentaerythritol with fatty acid, the following formula (2): Triester of pentaerythritol with fatty acid, the following formula (3): A diester of pentaerythritol with fatty acid, the following formula (4): And monoesters of fatty acid with pentaerythritol. (Wherein, R 1 to R 4 are each a chain hydrocarbon)
  • esters of pentaerythritol and fatty acids have the above IOB, melting point and water solubility
  • saturated fatty acids for example, C 2 -C 30 saturated fatty acids, for example, acetic acid (C 2 ) (C 2 represents a carbon number, R 1 C, R 2 C, R 3 C or R 4 C, which corresponds to the carbon number of R 2 C, and so forth), propanoic acid (C 3 ), butanoic acid (C 4 ) and isomers thereof, for example, 2-methylpropanoic acid (C 4) ), Pentanoic acid (C 5 ) and its isomers, such as 2-methylbutanoic acid (C 5 ), 2,2-dimethylpropanoic acid (C 5 ).
  • the fatty acids can also be unsaturated fatty acids.
  • unsaturated fatty acids include C 3 -C 20 unsaturated fatty acids such as monounsaturated fatty acids such as crotonic acid (C 4 ), myristoleic acid (C 14 ), palmitoleic acid (C 16 ), Oleic acid (C 18 ), elaidic acid (C 18 ), vacenic acid (C 18 ), gadeuric acid (C 20 ), eicosenic acid (C 20 ), etc., diunsaturated fatty acids such as linoleic acid (C 18 ), Eicosadienoic acid (C 20 ), etc., triunsaturated fatty acids such as linolenic acid, eg ⁇ -linolenic acid (C 18 ) and ⁇ -linolenic acid (C 18 ), pinolenic acid (C 18 ), eleostearic acid, For example, ⁇ -eleostearic acid (C 18
  • the ester of pentaerythritol and fatty acid is an ester of pentaerythritol and fatty acid derived from saturated fatty acid, that is, an ester of pentaerythritol and saturated fatty acid, in consideration of the possibility of modification by oxidation etc. preferable.
  • the ester of pentaerythritol and fatty acid in order to make IOB small and make it more hydrophobic, it is preferable to be a diester, a triester or a tetraester, and more preferable to be a triester or a tetraester. And tetra-esters are more preferred.
  • the total carbon number of fatty acids constituting the tetraester of pentaerythritol and fatty acid that is, in the above formula (1), R 1 C, R 2 C, R 3 C and When the total number of carbons in the R 4 C portion is 15, the IOB is 0.60. Therefore, in the case of the tetraester of pentaerythritol and fatty acid, IOB satisfies the requirement of about 0.00 to about 0.60 when the total carbon number is about 15 or more.
  • tetraesters of pentaerythritol and fatty acid include pentaerythritol, hexanoic acid (C 6 ), heptanoic acid (C 7 ), octanoic acid (C 8 ), for example, 2-ethylhexanoic acid (C 8 ), Mention may be made of tetraesters with nonanoic acid (C 9 ), decanoic acid (C 10 ) and / or dodecanoic acid (C 12 ).
  • the total carbon number of the fatty acid constituting the triester of pentaerythritol and fatty acid that is, in the above formula (2), R 1 C, R 2 C and R 3 C moieties
  • the IOB is 0.58 when the sum of the carbon numbers of these is 19. Therefore, in the case of the triester of pentaerythritol and fatty acid, the IOB satisfies the requirement of about 0.00 to about 0.60 when the total carbon number of fatty acid is about 19 or more.
  • the total carbon number of fatty acids constituting the diester of pentaerythritol and fatty acid that is, the total carbon number of R 1 C and R 2 C in the above formula (3) is In the case of 22, the IOB is 0.59. Therefore, in the diester of pentaerythritol and fatty acid, IOB satisfies the requirement of about 0.00 to about 0.60 when the total carbon number of fatty acid is about 22 or more.
  • esters of pentaerythritol and fatty acid examples include Unistar H-408 BRS, H-2408 BRS-22 (mixed product), etc. (all manufactured by NOF Corporation).
  • fatty acids (R 5 COOH, R 6 COOH and R 7 COOH) constituting the ester of glycerin and fatty acid if the ester of glycerin and fatty acid satisfies the requirements of the above IOB, melting point and water solubility
  • the fatty acids listed in the “ester of (a 1 ) chain hydrocarbon tetraol and at least one fatty acid” are not particularly limited, and examples thereof include saturated fatty acids and unsaturated fatty acids, which are modified by oxidation etc. In consideration of the possibility of doing so, an ester of glycerin and a fatty acid derived from a saturated fatty acid, that is, an ester of glycerin and a saturated fatty acid is preferable.
  • ester of glycerol and a fatty acid in order to make IOB small and make it more hydrophobic, it is preferable that it is a diester or a triester, and it is more preferable that it is a triester.
  • triester of glycerin and fatty acid is also referred to as triglyceride, for example, triester of glycerin and octanoic acid (C 8 ), triester of glycerin and decanoic acid (C 10 ), glycerin and dodecanoic acid (C 12) And triesters of glycerin and two or three fatty acids, and mixtures thereof.
  • Examples of the triester of the above glycerin and two or more fatty acids include triester of glycerin with octanoic acid (C 8 ) and decanoic acid (C 10 ), glycerin, octanoic acid (C 8 ), decane Acid (C 10 ) and triester with dodecanoic acid (C 12 ), glycerin and octanoic acid (C 8 ), decanoic acid (C 10 ), dodecanoic acid (C 12 ), tetradecanoic acid (C 14 ), hexadecanoic acid Examples thereof include triesters with (C 16 ) and octadecanoic acid (C 18 ).
  • the total carbon number of fatty acids constituting the triester of glycerin and fatty acid ie, R 5 C in the formula (5)
  • the sum of the carbon numbers of the R 6 C and R 7 C moieties is about 40 or less.
  • the total carbon number of fatty acids constituting the triester of glycerin and fatty acid that is, in the formula (5), the R 5 C, R 6 C and R 7 C moieties
  • the IOB is 0.60. Therefore, in the above-mentioned triesters of glycerin and fatty acid, IOB satisfies the requirement of about 0.00 to about 0.60 when the total carbon number of fatty acid is about 12 or more.
  • the above-mentioned triester of glycerin and a fatty acid is a so-called fat and is a component that can constitute the human body, and thus is preferable from the viewpoint of safety.
  • triester of glycerin and fatty acid include trycotic oil fatty acid glyceride, NA36, panaseto 800, panaseto 800B and panaceto 810S, and tri C2L oil fatty acid glyceride and tri CL oil fatty acid glyceride (manufactured by NOF CORPORATION) Etc.).
  • the above-mentioned diester of glycerin and fatty acid is also referred to as a diglyceride, for example, a diester of glycerin and decanoic acid (C 10 ), a diester of glycerin and dodecanoic acid (C 12 ), and a glycerin and hexadecanoic acid (C 16 ) Included are diesters and diesters of glycerin with two fatty acids, and mixtures thereof.
  • the total carbon number of fatty acids constituting the diester of glycerin and fatty acid ie, the case where the total carbon number of R 5 C and R 6 C moieties in the formula (6) is 16
  • the IOB is 0.58. Therefore, in the case of the above-mentioned diester of glycerin and fatty acid, IOB satisfies the requirement of about 0.00 to about 0.60 when the total carbon number of fatty acid is about 16 or more.
  • the monoester of glycerin and fatty acid is also referred to as monoglyceride, and examples thereof include icosanoic acid (C 20 ) monoester of glycerin, docosanoic acid (C 22 ) monoester of glycerin and the like.
  • the carbon number of fatty acid constituting the monoester of glycerin and fatty acid that is, in the formula (7), the IOB is 0.59 when the carbon number of the R 5 C portion is 19 It becomes. Therefore, in the monoester of glycerin and fatty acid, the IOB satisfies the requirement of about 0.00 to about 0.60 when the carbon number of the fatty acid is about 19 or more.
  • esters of the above linear hydrocarbon diol and at least one fatty acid include C 2 to C 6 linear hydrocarbon diols, such as C 2 to C 6 glycols, such as ethylene glycol, propylene glycol, butylene And monoesters or diesters of glycol, pentylene glycol or hexylene glycol with fatty acids.
  • ester of the above-mentioned chain hydrocarbon diol and at least one fatty acid for example, the following formula (8): R 8 COOC k H 2k OCOR 9 (8) (Wherein k is an integer of 2 to 6 and R 8 and R 9 are each a chain hydrocarbon) And a diester of a C 2 -C 6 glycol and a fatty acid, and the following formula (9): R 8 COOC k H 2k OH (9) (Wherein k is an integer of 2 to 6 and R 8 is a chain hydrocarbon) And monoesters of fatty acid with C 2 -C 6 glycol.
  • ester of C 2 -C 6 glycol and fatty acid as the fatty acid to be esterified (corresponding to R 8 COOH and R 9 COOH in formula (8) and formula (9)), C 2 -C 6 glycol is mentioned
  • ester of fatty acid with the above-mentioned IOB melting point and water solubility
  • ester of (a 1 ) chain hydrocarbon tetraol with at least one fatty acid for example, "ester of (a 1 ) chain hydrocarbon tetraol with at least one fatty acid”.
  • the ester of a C 2 ⁇ C 6 glycols and fatty acid in view of the potential for degradation by oxidation and the like, derived from saturated fatty acids, esters of C 2 ⁇ C 6 glycols and fatty acid, Nachi Suwa, C 2 It is preferably an ester of a -C 6 glycol and a saturated fatty acid.
  • ester of C 2 -C 6 glycol and fatty acid an ester of glycol and fatty acid derived from glycol having a large number of carbon atoms, for example, butylene glycol, in order to make IOB small and make it more hydrophobic. It is preferable that it is an ester of a glycol derived from pentylene glycol or hexylene glycol and a fatty acid.
  • ester of C 2 -C 6 glycol and fatty acid a diester is preferable in order to make IOB small and to make it more hydrophobic.
  • examples of commercial products of the ester of C 2 -C 6 glycol and fatty acid include Commol BL, Commol BS (manufactured by NOF Corporation) and the like.
  • (B) a compound having a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety, (B2) a chain hydrocarbon moiety, and Ether with compound having one hydroxyl group replacing hydrogen atom of linear hydrocarbon moiety
  • (B) A compound having (B1) a chain hydrocarbon moiety and 2 to 4 hydroxyl groups replacing the hydrogen atom of the chain hydrocarbon moiety, (B2) a chain hydrocarbon moiety, and the above chain Ether with a compound having one hydroxyl group replacing hydrogen atoms in the cyclic hydrocarbon moiety (hereinafter sometimes referred to as “compound (B)”) has the above-mentioned IOB, melting point and water solubility And all hydroxyl groups may not be etherified.
  • Examples of the compound having (B1) a chain hydrocarbon portion and 2 to 4 hydroxyl groups replacing the hydrogen atoms of the above chain hydrocarbon portion are listed as the compound (A1) in the “compound (A)”. And, for example, pentaerythritol, glycerin and glycol.
  • Examples of (B2) a compound having a chain hydrocarbon portion and one hydroxyl group replacing the hydrogen atom of the above chain hydrocarbon portion include, for example A compound in which one hydrogen atom of hydrocarbon is substituted with one hydroxyl group (—OH), such as aliphatic monohydric alcohol such as saturated aliphatic monohydric alcohol and unsaturated aliphatic monohydric alcohol Can be mentioned.
  • saturated aliphatic monohydric alcohol examples include C 1 to C 20 saturated aliphatic monohydric alcohols, for example, methyl alcohol (C 1 ) (C 1 represents a carbon number, the same applies hereinafter), ethyl alcohol C 2 ), propyl alcohol (C 3 ) and its isomers, such as isopropyl alcohol (C 3 ), butyl alcohol (C 4 ) and its isomers, such as sec-butyl alcohol (C 4 ) and tert-butyl alcohol (C 4 ), pentyl alcohol (C 5 ), hexyl alcohol (C 6 ), heptyl alcohol (C 7 ), octyl alcohol (C 8 ) and isomers thereof, such as 2-ethylhexyl alcohol (C 8 ), nonyl alcohol (C 9), decyl alcohol (C 10), dodecyl alcohol (C 12), tetradecyl alcohol (C 14), Hexadecyl alcohol (C 16), to
  • an ether of (b 1 ) chain hydrocarbon tetraol and at least one aliphatic monohydric alcohol for example, monoether, diether, triether and tetraether, preferably diether, triether Ethers and tetraethers, more preferably triethers and tetraethers, and still more preferably tetraethers, ethers of (b 2 ) chain hydrocarbon triol and at least one aliphatic monohydric alcohol, such as monoethers, diethers and the like Triethers, preferably diethers and triethers, and more preferably triethers, and ethers of (b 3 ) chain hydrocarbon diol and at least one aliphatic monohydric alcohol, such as monoethers and diethers, and preferably Diether It is below.
  • Examples of the ether of the above linear hydrocarbon tetraol and at least one aliphatic monohydric alcohol include the following formulas (10) to (13): (Wherein, each of R 10 to R 13 is a chain hydrocarbon). And tetraethers of pentaerythritol and aliphatic monohydric alcohols, triethers, diethers and monoethers.
  • Examples of the ether of the above linear hydrocarbon triol and at least one aliphatic monohydric alcohol include the following formulas (14) to (16): (Wherein, R 14 to R 16 are each a chain hydrocarbon). And triethers of glycerin and aliphatic monohydric alcohols, diethers and monoethers.
  • R 17 OC n H 2n OR 18 (Wherein n is an integer of 2 to 6 and R 17 and R 18 are each a chain hydrocarbon) Diethers of C 2 -C 6 glycols and aliphatic monohydric alcohols, and the following formula (18): R 17 OC n H 2n OH (18) (Wherein n is an integer of 2 to 6 and R 17 is a chain hydrocarbon) And monoethers of C 2 -C 6 glycols and aliphatic monohydric alcohols.
  • the total carbon number of aliphatic monohydric alcohol constituting the tetraether of pentaerythritol and aliphatic monohydric alcohol that is, in the above formula (10)
  • the IOB is 0.44. Accordingly, in the above tetraether of pentaerythritol and aliphatic monohydric alcohol, IOB is required to be about 0.00 to about 0.60 when the total carbon number of aliphatic monohydric alcohol is about 4 or more. Fulfill.
  • the total carbon number of aliphatic monohydric alcohol constituting triether of pentaerythritol and aliphatic monohydric alcohol ie, in the above formula (11)
  • the IOB is 0.57. Therefore, in the above triether of pentaerythritol and aliphatic monohydric alcohol, IOB is required to be about 0.00 to about 0.60 when the total carbon number of aliphatic monohydric alcohol is about 9 or more. Fulfill.
  • the total carbon number of aliphatic monohydric alcohols constituting the diether of pentaerythritol and aliphatic monohydric alcohol that is, R 10 in the above formula (12)
  • the IOB becomes 0.60. Therefore, in the diether of pentaerythritol and aliphatic monohydric alcohol, the IOB satisfies the requirement of about 0.00 to about 0.60 when the total carbon number of the aliphatic monohydric alcohol is about 15 or more. .
  • the carbon number of the aliphatic monohydric alcohol constituting the monoether of pentaerythritol and aliphatic monohydric alcohol that is, R 10 in the above formula (13)
  • the IOB is 0.59. Therefore, in the monoether of pentaerythritol and aliphatic monohydric alcohol, IOB satisfies the requirement of about 0.00 to about 0.60 when the carbon number of the aliphatic monohydric alcohol is about 22 or more.
  • the total carbon number of aliphatic monohydric alcohol constituting triether of glycerin and aliphatic monohydric alcohol that is, R in the formula (14)
  • the IOB is 0.50. Accordingly, in the above triether of glycerin and aliphatic monohydric alcohol, IOB satisfies the requirement of about 0.00 to about 0.60 when the total carbon number of aliphatic monohydric alcohol is about 3 or more. .
  • the total carbon number of aliphatic monohydric alcohols constituting the diether of glycerin and aliphatic monohydric alcohol that is, in the formula (15), R 14 and R 15
  • the IOB is 0.58. Therefore, in the diether of glycerin and aliphatic monohydric alcohol, the IOB satisfies the requirement of about 0.00 to about 0.60 when the total carbon number of the aliphatic monohydric alcohol is about 9 or more.
  • the carbon number of the aliphatic monohydric alcohol constituting the monoether of glycerin and aliphatic monohydric alcohol that is, the carbon of R 14 in the formula (16)
  • the IOB is 0.58. Therefore, in the monoether of glycerin and aliphatic monohydric alcohol, the IOB satisfies the requirement of about 0.00 to about 0.60 when the carbon number of the aliphatic monohydric alcohol is about 16 or more.
  • the compound (B) can be produced by dehydration condensation of the compound (B1) and the compound (B2) in the presence of an acid catalyst.
  • (C1) a linear hydrocarbon moiety and a carboxylic acid, a hydroxy acid, an alkoxy acid or an oxo acid
  • compound As C1 may be, for example, a linear hydrocarbon carboxylic acid having 2 to 4 carboxyl groups, such as a linear hydrocarbon dicarboxylic acid, such as an alkanedicarboxylic acid, such as ethanedioic acid Propanedioic acid, butanedioic acid, pentanedioic acid, hexanedioic acid, heptanedioic acid, octanedioic acid, nonanedioic acid and decanedioic acid, linear hydrocarbon tricarboxylic acids such as alkanetricarboxylic acids such as propane tricarboxylic acid Acid, butane triacid, pentane triacid, hexane triacid, heptane tri
  • a linear hydrocarbon hydroxy acid having 2 to 4 carboxyl groups for example, a linear chain having 2 to 4 carboxyl groups, such as malic acid, tartaric acid, citric acid, isocitric acid, etc.
  • Hydrocarbon alkoxy acids such as O-acetylcitric acid, and linear hydrocarbon oxoacids with 2 to 4 carboxyl groups are included.
  • Examples of the compound having a (C2) linear hydrocarbon moiety and one hydroxyl group replacing the hydrogen atom of the linear hydrocarbon moiety include those listed in the “compound (B)”, for example, Aliphatic monohydric alcohols are mentioned.
  • an ester of (c 1 ) chain hydrocarbon tetracarboxylic acid having 4 carboxyl groups, a hydroxy acid, an alkoxy acid or an oxo acid, and at least one aliphatic monohydric alcohol for example, Mono-, di-, tri- and tetra-esters, preferably diesters, tri- and tetra-esters, more preferably tri- and tetra-esters, and still more preferably tetra-esters, chained with 3 (c 2 ) carboxyl groups
  • Esters of hydrocarbon tricarboxylic acids, hydroxy acids, alkoxy acids or oxo acids with at least one aliphatic monohydric alcohol such as monoesters, diesters and triesters, preferably diesters and triesters, and more preferably triesters ,
  • the above-mentioned ether satisfies the requirements of the above-mentioned IOB, melting point and water solubility It is not particularly limited, and examples thereof include aliphatic monohydric alcohols listed in the “compound (B)” section.
  • the total carbon number of the aliphatic monohydric alcohol constituting the ether that is, the carbon number of the R 19 and R 20 moieties in the above formula (19) Since the IOB is 0.50 when the sum of the two is 2, the requirement of the above IOB is satisfied if the total carbon number is about 2 or more. However, when the total carbon number is about 6, the water solubility is as high as about 2 g, and there is also a problem from the viewpoint of the vapor pressure. In order to satisfy the requirement of water solubility of about 0.00 to about 0.05 g, the total carbon number is preferably about 8 or more.
  • dialkyl ketone [(D 2 ) dialkyl ketone]
  • dialkyl ketone following Formula (20): R 21 COR 22 (20) (Wherein, each of R 21 and R 22 is an alkyl group) And compounds having the formula:
  • the total carbon number is preferably about 8 or more. Also, in consideration of the vapor pressure, the carbon number is preferably about 10 or more, and preferably about 12 or more.
  • the melting point is about ⁇ 50 ° C.
  • the vapor pressure is about 230 Pa at 20 ° C.
  • the above-mentioned dialkyl ketone is commercially available, and can be obtained by a known method, for example, by oxidizing a secondary alcohol with chromic acid or the like.
  • Examples of the fatty acid (corresponding to R 23 COOH in the formula (21)) constituting the above-mentioned ester are listed in, for example, “ester of (a 1 ) chain hydrocarbon tetraol with at least one fatty acid”.
  • a fatty acid that is, a saturated fatty acid or an unsaturated fatty acid is mentioned, and in consideration of the possibility of modification by oxidation etc., a saturated fatty acid is preferred.
  • Examples of the aliphatic monohydric alcohol (corresponding to R 24 OH in the formula (21)) constituting the above-mentioned ester include, for example, aliphatic monohydric alcohols listed in the “compound (B)” section.
  • the sum of carbon number of fatty acid and aliphatic monohydric alcohol ie, the sum of carbon number of R 23 C and R 24 in the formula (21) is 5
  • the requirement of the above IOB is satisfied when the total carbon number of the R 23 C and R 24 moieties is about 5 or more.
  • the vapor pressure is as high as 2,000 Pa or more. Therefore, in consideration of the vapor pressure, the total carbon number is preferably about 12 or more. If the total carbon number is about 11 or more, the water solubility can satisfy the requirement of about 0.00 to about 0.05 g.
  • esters of the above fatty acids and aliphatic monohydric alcohols include, for example, esters of dodecanoic acid (C 12 ), dodecyl alcohol (C 12 ), tetradecanoic acid (C 14 ), and dodecyl alcohol (C 12 ) And the like.
  • esters of commercially available esters of fatty acid and aliphatic monohydric alcohol include Electol WE20 and Electol WE40 (all manufactured by NOF Corporation).
  • the total carbon number of R 25 and R 26 is preferably about 7 or more, and more preferably about 9 or more.
  • the dialkyl carbonate is commercially available, and can be synthesized by the reaction of phosgene with alcohol, the reaction of formic acid chloride ester with alcohol or alcoholate, and the reaction of silver carbonate with alkyl iodide.
  • Said oxy C 2 ⁇ 6 alkylene skeleton from the viewpoint of lowering the IOB of polyoxy C 2 ⁇ 6 alkylene glycol, polyoxypropylene skeleton, oxybutylene skeleton, it is oxypentylene skeleton, or an oxy hexylene skeleton
  • oxy More preferably, it is a butylene skeleton, an oxypentylene skeleton or an oxyhexylene skeleton.
  • homopolymers of formula (23) may include homopolymers of propylene glycol, butylene glycol, pentylene glycol or hexylene glycol. From the above, in the formula (23), m is about 3 to about 6, and more preferably about 4 to about 6, and n is 2 or more.
  • a weight average molecular weight of polyoxy C 4 - 6 alkylene glycol is preferably from about 200 to about 10,000, more preferably from about 250 to about 8,000, and more preferably, from about It is in the range of 250 to about 5,000.
  • the weight average molecular weight of the polyoxy C 3 alkylene glycol, ie, polypropylene glycol is preferably about 1,000 to about 10,000, more preferably about 3,000 to about 8 And more preferably in the range of about 4,000 to about 5,000.
  • Examples of commercial products of polyoxy C 2 ⁇ 6 alkylene glycols for example, UNIOL (TM) D-1000, D-1200 , D-2000, D-3000, D-4000, PB-500, PB-700, PB- And PB-2000 (manufactured by NOF Corporation).
  • UNIOL TM
  • D-1000, D-1200 , D-2000, D-3000, D-4000, PB-500, PB-700, PB- And PB-2000 manufactured by NOF Corporation.
  • esters of at least one fatty acid and the polyoxy C 2 ⁇ 6 alkylene glycol "(e 1) polyoxy C 2 ⁇ 6 alkylene glycol” one of polyoxy C 2 ⁇ 6 OH terminus of alkylene glycol described in the section or Both are esterified with fatty acids, ie monoesters and diesters.
  • esters of polyoxy C 2 ⁇ 6 alkylene glycol and at least one fatty acid the fatty acid to be esterified, for example, are listed in the "(a 1) an ester of a chain hydrocarbon tetraol and at least one fatty acid"
  • Certain fatty acids ie, saturated fatty acids or unsaturated fatty acids, and in view of the possibility of modification by oxidation etc., saturated fatty acids are preferred.
  • Examples of commercial products of esters of polyoxy C 2 ⁇ 6 alkylene glycols with fatty acids for example, Will Bright cp9 (NOF Corporation) and the like.
  • aliphatic monohydric alcohol to be etherified for example, "compound (B)" aliphatic listed in section 1 Alcohol can be mentioned.
  • Esters of polyoxy C 2 ⁇ 6 alkylene glycol and a chain hydrocarbon tetracarboxylic acid, and chain hydrocarbon tricarboxylic acid or chain hydrocarbon dicarboxylic acids, in addition to commercially available, chain hydrocarbon tetracarboxylic acid , chain hydrocarbon tricarboxylic acid or chain hydrocarbon dicarboxylic acids, oxy C 2 ⁇ 6 alkylene glycol, can be prepared by polycondensation under known conditions.
  • chain hydrocarbon tetraol to be etherified the chain hydrocarbon triol, and the chain hydrocarbon diol, those described in the “compound (A)” section, for example, pentaerythritol, glycerin and glycol Can be mentioned.
  • the polyoxy C 2 ⁇ 6 alkylene glycol and a chain hydrocarbon tetraol, chain hydrocarbon triol, or as ethers commercial products of the chain hydrocarbon diols, for example, UNILUBE (TM) 5TP-300KB, and Uniol (Trademark) TG-3000 and TG-4000 (manufactured by NOF Corporation).
  • Unilube (TM) 5TP-300KB is a compound obtained by polycondensation of 65 moles of propylene glycol and 5 moles of ethylene glycol with 1 mole of pentaerythritol, and its IOB is 0.39, and the melting point is less than 45 ° C. And the water solubility was less than 0.05 g.
  • Uniol (TM) TG-3000 is a compound obtained by polycondensing 50 moles of propylene glycol with 1 mole of glycerin, its IOB is 0.42, its melting point is less than 45 ° C, and its water solubility is 0.05 g And the weight average molecular weight was about 3,000.
  • Uniol (TM) TG-4000 is a compound obtained by polycondensing 70 moles of propylene glycol with 1 mole of glycerin, its IOB is 0.40, melting point is less than 45 ° C., and water solubility is 0.05 g And the weight average molecular weight was about 4,000.
  • the polyoxy C 2 ⁇ 6 alkylene glycol, ether chain hydrocarbon tetraol, chain hydrocarbon triol, or a chain hydrocarbon diol also chain hydrocarbon tetraol, chain hydrocarbon triol or chain to Jo hydrocarbon diols, C 2 ⁇ 6 alkylene oxide can be produced by the addition under known conditions.
  • the chain hydrocarbon has an IOB of 0.00 and an aqueous solubility of almost 0 g because the inorganic value is 0, and the blood has a melting point of about 45 ° C. or less. It may be included in the modifier.
  • Examples of the chain hydrocarbon include (f 1 ) chain alkanes such as straight chain alkanes and branched chain alkanes, and in the case of straight chain alkanes, for example, the melting point is about 45 ° C. or less In general, those containing 22 or less carbon atoms are included. Also, in consideration of the vapor pressure, those having 13 or more carbon atoms are generally included.
  • the blood modifying agent of the present invention was found to at least have the effect of lowering the viscosity and surface tension of blood. Since the menstrual blood to be absorbed by the absorbent article contains proteins such as the endometrial wall as compared with normal blood, they act to connect the blood cells to each other, and the blood cells are in a continuous state. Cheap. Therefore, the menstrual blood to be absorbed by the absorbent article tends to have a high viscosity, and when the top sheet is a non-woven fabric or a woven fabric, menstrual blood tends to be clogged between fibers, and the wearer feels sticky. And it spreads and leaks on the surface of the top sheet.
  • the blood modifying agent of the present invention to the top sheet, menstrual blood is less likely to be clogged between the fibers of the top sheet, and the menstrual blood is rapidly transferred from the top sheet to the absorber. Is possible.
  • the blood modifying agent of the present invention having an IOB of about 0.00 to about 0.60 is highly organic and easily enters between blood cells, thereby stabilizing the blood cells and making it difficult to form a continuous structure in the blood cells. It is thought that it can be done. It is believed that the blood modifying agent of the present invention stabilizes the blood cells and makes it difficult to form a continuous structure in the blood cells, whereby the absorber can easily absorb menstrual blood.
  • the blood modifying agent having high affinity for red blood cells protects the red blood cell membrane, so that the red blood cells are less likely to be destroyed.
  • the blood modifying agents of the present invention preferably have a weight average molecular weight of about 2,000 or less, and more preferably 1,000 or less.
  • weight average molecular weight When the weight average molecular weight is increased, it is difficult to lower the viscosity of the blood modifier to a viscosity suitable for coating, and there is a case where dilution with a solvent occurs.
  • weight average molecular weight when the weight average molecular weight is increased, tackiness may be generated in the blood modifying agent, which may cause discomfort to the wearer.
  • the sanitary napkin comprises a top sheet formed of an air through non-woven fabric (composite fiber of polyester and polyethylene terephthalate, basis weight: 35 g / m 2 ) treated with a hydrophilic agent, and a composite of air through non-woven fabric (polyester and polyethylene terephthalate) Fiber, second sheet formed of basis weight: 30 g / m 2 ), pulp (basis weight: 150 to 450 g / m 2 , more in the central part), acrylic high absorption polymer (basis weight: 15 g / m 2 ) And, it was formed from an absorbent including a tissue as a core wrap, a water repellent treated side sheet, and a back sheet made of polyethylene film.
  • an absorbent including a tissue as a core wrap, a water repellent treated side sheet, and a back sheet made of polyethylene film.
  • Triethylene CL oil fatty acid glycerides, manufactured by NOF Corporation C 8 fatty acid: fatty acid of C 12 is approximately included in a weight ratio of 44:56, triesters of glycerin and fatty acid, the weight average molecular weight: about 570
  • -Panaceto 800 B manufactured by NOF Corporation Triester of glycerin and fatty acid in which all fatty acids are 2-ethylhexanoic acid (C 8 ), weight average molecular weight: about 470 NA36, manufactured by NOF Corporation C 16 fatty acids: C 18 fatty acids: C 20 fatty acids (including both saturated fatty acids and unsaturated fatty acids) in a weight ratio of approximately 5: 92: 3, Triester of glycerin and fatty acid, weight average molecular weight: about 880
  • Tricot oil fatty acid glyceride manufactured by NOF Corporation C 8 fatty acid: C 10 fatty acid: C 12 fatty acid: C 14 fatty acid: C 16 fatty acid (including both saturated fatty acid and unsaturated fatty acid) is approximately 4 Triester of glycerin and fatty acid, contained in a weight ratio of 8: 60: 25: 3, weight average molecular weight: 670 ⁇ Caprylic diglyceride, manufactured by NOF Corporation Diester of glycerin and fatty acid wherein fatty acid is octanoic acid, weight average molecular weight: 340
  • Uniol D-4000 polypropylene glycol manufactured by NOF Corporation, weight average molecular weight: about 4,000 Uniol PB500, polybutylene glycol manufactured by NOF Corporation, weight average molecular weight: about 500 Uniol PB700, manufactured by NOF Corporation, polyoxybutylene polyoxypropylene glycol, weight average molecular weight: about 700
  • Uniol PB 1000 R polybutylene glycol manufactured by NOF Corporation, weight average molecular weight: about 1000 [(E 2) an ester of polyoxy C 2 ⁇ 6 alkylene glycol and at least one fatty acid] ⁇ Wilbright cp 9, a compound in which OH groups at both ends of polybutylene glycol manufactured by NOF Corporation were esterified with hexadecanoic acid (C 16 ), weight average molecular weight: about 1,150
  • UNIOL TG-3000 glyceryl ether of polypropylene glycol manufactured by NOF Corporation, about 16 repeating units, weight average molecular weight: about 3,000 ⁇ UNIOL TG-4000, glyceryl ether of polypropylene glycol manufactured by NOF Corporation, about 16 repeating units, weight average molecular weight: about 4,000
  • weight average molecular weight about 880 (Caprylic acid / capric acid) monoglyceride, monoester of glycerin and fatty acid, which contains octanoic acid (C 8 ) and decanoic acid (C 10 ) manufactured by NOF Corporation at
  • -PEG 1500 polyethylene glycol manufactured by NOF Corporation, weight average molecular weight: about 1,500 to about 1,600 Nonion S-6, manufactured by NOF Corporation, polyoxyethylene monostearate, repeating unit of about 7 weight average molecular weight: about 880 Will Bright s 753, manufactured by NOF Corporation polyoxyethylene polyoxypropylene polyoxybutylene glycerin, weight average molecular weight: about 960
  • TG-330 a glyceryl ether of polypropylene glycol manufactured by NOF Corporation, about 6 repeating units, weight average molecular weight: about 330 ⁇ UNIOL TG-1000, glyceryl ether of polypropylene glycol manufactured by NOF Corporation, about 16 repeating units, weight average molecular weight: about 1,000
  • Unirube DGP-700 a diglyceryl ether of polypropylene glycol manufactured by NOF Corporation, about 9 repeating units, weight average molecular weight: about 700 -Uniox HC60, manufactured by NOF Co., Ltd. polyoxyethylene hydrogenated castor oil, weight average molecular weight: about 3,570 ⁇ Vaseline, Cognis Japan Ltd. Petroleum derived hydrocarbon, semi-solid
  • the IOB, melting point and water solubility of the above sample are shown in Table 2 below.
  • the water solubility was measured according to the above-mentioned method, but 20.0 g was added to 100 g of demineralized water, and a sample dissolved after 24 hours was evaluated as “20 g ⁇ ”, and 100 g of demineralized water Samples that dissolved 0.05 g but not 1.00 g were rated as 0.05 to 1.00 g.
  • fusing point " ⁇ 45" means that melting
  • the skin contact surface of the top sheet of the above-mentioned sanitary napkin was coated with the above-mentioned blood modifier. Heat each blood modifier to its melting point + 20 ° C if the blood modifier is liquid at room temperature, and if the blood modifier is solid at room temperature, then control seam HMA gun Each blood modifying agent was atomized and applied to the entire skin contact surface of the top sheet so that the basis weight was approximately 5 g / m 2 .
  • FIG. 11 is an electron micrograph of the skin contact surface of the top sheet in the sanitary napkin (No. 2-5) in which the top sheet contains avian C2L oil fatty acid glyceride. As apparent from FIG. 11, the tri-C2L oil fatty acid glyceride is in the form of fine particles and adheres to the surface of the fiber. Rewet rates and absorber transfer rates were measured according to the procedure described above. The results are shown in Table 2 below.
  • Rewet rate (%) 100 ⁇ (weight of filter paper after test ⁇ weight of original filter paper) / 6
  • absorber transfer speed which is the time for blood to transfer from the top sheet to the absorber after the second drop of blood.
  • absorber transfer rate means the time from when blood is introduced into the top sheet to when the red color of blood is not seen on the surface and inside of the top sheet.
  • the rewet rate was 22.7% and the absorber transfer rate was over 60 seconds, but both the glycerin and fatty acid triesters had rewet rates From the fact that it is 7.0% or less and the absorber transfer rate is 8 seconds or less, it can be seen that the absorption performance is greatly improved. However, among triesters of glycerin and fatty acid, NA50 of which the melting point exceeds 45 ° C. shows no significant improvement in the absorption performance.
  • a blood modifying agent having an IOB of about 0.00 to about 0.60, a melting point of about 45 ° C. or less, and an aqueous solubility of about 0.00 to about 0.05 g per 100 g of water at 25 ° C. It was found that the absorption performance was greatly improved.
  • Defibrillation blood after blood collection, stirred for about 5 minutes in an Erlenmeyer flask together with glass beads
  • EDTA blood Addition of 0.5 mL of 12% EDTA ⁇ 2K saline to 65 mL of venous blood
  • Serum or plasma Supernatant after centrifuging defibrillated blood or EDTA blood at about 1900 G for 10 minutes at room temperature, respectively.
  • Blood cells Remove the serum from the blood and remove the residual phosphate buffered saline (PBS) ) Washed twice and then added with phosphate buffered saline for the removed serum
  • An absorbent article was produced in the same manner as in Example 2 except that avian C2L oil fatty acid glyceride was applied so as to give a basis weight of approximately 5 g / m 2, and the rewet rate was evaluated for the above various blood. . Three measurements were taken for each blood and the mean value was taken. The results are shown in Table 3 below.
  • Example 2 The same tendency as equine EDTA blood obtained in Example 2 was also obtained for human and sheep blood. The same tendency was also observed in defibrinated blood and EDTA blood.
  • the top sheet containing the blood modifying agent has low blood retention and can be rapidly transferred to the absorber after absorbing blood.
  • Example 4 [Viscosity of blood containing blood modifying agent] The viscosity of the blood containing the blood modifying agent was measured using Rheometric Expansion System ARES (Rheometric Scientific, Inc). 2% by weight of Panaceto 810s was added to equine defibrinated blood, the mixture was lightly stirred to form a sample, the sample was loaded on a parallel plate of 50 mm in diameter, the gap was made 100 ⁇ m, and the viscosity was measured at 37 ⁇ 0.5 ° C. . Because of the parallel plate, the sample was not subjected to a uniform shear rate, but the average shear rate displayed on the instrument was 10 s ⁇ 1 .
  • the viscosity of horse-defibrillated blood containing 2% by mass of Panaceto 810s was 5.9 mPa ⁇ s, while the viscosity of horse-defibrillated blood containing no blood modifying agent was 50.4 mPa ⁇ s.
  • equine defibrinated blood containing 2% by weight of Panaceto 810s reduces the viscosity by about 90% as compared to the case without blood modifying agent.
  • blood contains components such as blood cells and is known to have thixotropy properties, it is considered that the blood modifying agent of the present disclosure can lower the viscosity of blood in a low viscosity region. By reducing the viscosity of blood, it is thought that absorbed menstrual blood can be rapidly transferred from the top sheet to the absorber.
  • Example 5 [Micrograph of blood containing blood modifier] A healthy volunteer's menstrual blood is collected on Saran wrap (trademark), and a portion of it is Panaseto 810s dispersed in 10 times mass phosphate buffered saline, and the concentration of Panaceto 810s is 1% by mass. Added to The menstrual blood was applied to a slide glass, covered with a cover glass, and the condition of red blood cells was observed with a light microscope. A photomicrograph of menstrual blood containing no blood modifying agent is shown in FIG. 12 (a), and a photomicrograph of menstrual blood containing PANACET 810s is shown in FIG. 12 (b).
  • red blood cells form a lump of rhomsen, etc., but in menstrual blood containing PANACET 810s, the red blood cells are dispersed stably. I understand. Therefore, it is suggested that the blood modifying agent works to stabilize red blood cells in the blood.
  • Example 6 [Surface tension of blood containing blood modifier] The surface tension of blood containing a blood modifying agent was measured by a pendant drop method using a contact angle meter Drop Master 500 manufactured by Kyowa Interface Science Co., Ltd. The surface tension was measured after adding a predetermined amount of blood modifying agent to sheep defibrinated blood and shaking sufficiently. The measurement is automatically performed by the device, but the density ⁇ is obtained by the following equation (see FIG. 13).
  • the density ⁇ is 5 of “density test method and density / mass / volume conversion table” of JIS K 2249-1995. It was measured at the temperature shown in Table 5 below according to the vibrational density test method. For measurement, DA-505 of Kyoto Electronics Industries Ltd. was used. The results are shown in Table 5.
  • the blood modifying agent has a water solubility of about 0.00 to about 0.05 g per 100 g of water at 25 ° C., but its solubility in water is very low. It can be seen that the surface tension of the blood can be reduced. By lowering the surface tension of the blood, it is considered that the absorbed blood can be rapidly transferred to the absorber without being held between the fibers of the top sheet.

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Abstract

L'invention a pour objectif de fournir un nouvel article absorbant empêchant la compression excessive d'un corps absorbant due à une déformation de l'article absorbant, et la réhumidification s'en suivant. Afin d'atteindre cet objectif, une serviette hygiénique (1) est équipée : d'une feuille supérieure (2) perméable au liquide; d'une feuille inférieure (3) non perméable au liquide; et d'un corps absorbant (4) agencé entre la feuille supérieure (2) et la feuille inférieure (3). Une région extensible (21) possédant des parties soufflet (210) extensibles, et une région flexible (22) entourant la région extensible (21), sont formées en une région pour apport d'excrément (20a) de la feuille supérieure (2). Une première couche d'adhésif (S1) est formée entre la région pour apport d'excrément (20a) et le corps absorbant (4). Une seconde couche d'adhésif (S2) dont la force d'adhésion est supérieure à celle de la première couche d'adhésif (S1), est formée entre le corps absorbant (4) et une région périphérique (20b) positionnée à la périphérie de la région pour apport d'excrément (20a).
PCT/JP2013/054804 2012-02-29 2013-02-25 Article absorbant WO2013129332A1 (fr)

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JPH08280737A (ja) * 1995-04-20 1996-10-29 Kao Corp 吸収性物品
JPH11512643A (ja) * 1996-05-31 1999-11-02 ザ、プロクター、エンド、ギャンブル、カンパニー 弾性的挙動及び柔軟な布状風合いを示すウエブ材料
JP2006510456A (ja) * 2002-12-18 2006-03-30 ザ プロクター アンド ギャンブル カンパニー 身体清潔効果のための生理用ナプキン
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JPH05137752A (ja) * 1991-11-25 1993-06-01 Kao Corp 吸収性物品及びその製造方法
JPH08280737A (ja) * 1995-04-20 1996-10-29 Kao Corp 吸収性物品
JPH11512643A (ja) * 1996-05-31 1999-11-02 ザ、プロクター、エンド、ギャンブル、カンパニー 弾性的挙動及び柔軟な布状風合いを示すウエブ材料
JP2006510456A (ja) * 2002-12-18 2006-03-30 ザ プロクター アンド ギャンブル カンパニー 身体清潔効果のための生理用ナプキン
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WO2020071064A1 (fr) * 2018-10-01 2020-04-09 花王株式会社 Article absorbant
JP2020054599A (ja) * 2018-10-01 2020-04-09 花王株式会社 吸収性物品
CN112689492A (zh) * 2018-10-01 2021-04-20 花王株式会社 吸收性物品
RU2769150C1 (ru) * 2018-10-01 2022-03-28 Као Корпорейшн Впитывающее изделие
JP7289193B2 (ja) 2018-10-01 2023-06-09 花王株式会社 吸収性物品

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