WO2006120847A1 - 使い捨ておむつ - Google Patents
使い捨ておむつ Download PDFInfo
- Publication number
- WO2006120847A1 WO2006120847A1 PCT/JP2006/308144 JP2006308144W WO2006120847A1 WO 2006120847 A1 WO2006120847 A1 WO 2006120847A1 JP 2006308144 W JP2006308144 W JP 2006308144W WO 2006120847 A1 WO2006120847 A1 WO 2006120847A1
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- WO
- WIPO (PCT)
- Prior art keywords
- diaper
- absorbent
- leak
- sheet
- main body
- Prior art date
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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
- A61F13/45—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 shape
- A61F13/49—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies
- A61F13/496—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies in the form of pants or briefs
-
- 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
- A61F13/45—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 shape
- A61F13/49—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies
-
- 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
-
- 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
- A61F13/45—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 shape
- A61F13/49—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
-
- 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
- A61F13/45—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 shape
- A61F13/49—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
-
- 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
- A61F13/45—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 shape
- A61F13/49—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies
- A61F13/494—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
-
- 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
- A61F13/45—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 shape
- A61F13/49—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies
- A61F13/494—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
- A61F13/49406—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/49413—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
- A61F13/4942—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet
-
- 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
- A61F13/45—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 shape
- A61F13/49—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies
- A61F13/494—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means
- A61F13/49406—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/4946—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 shape specially adapted to be worn around the waist, e.g. diapers, nappies characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an absorbent medium
-
- 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
-
- 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
Definitions
- the present invention relates to a disposable diaper, and particularly to a pants-type disposable diaper.
- the present invention also relates to a disposable diaper having a clean appearance when worn and having excellent leakage prevention performance.
- an elastic member extending in the width direction of a diaper is disposed between a waist opening and a redder opening.
- at least the ventral side of the diaper is defined as a range around the first month, which is defined as a maximum 20 mm above and below the front edge of the core, and between the first waist area and the redder opening.
- the arrangement interval dimension of the elastic members in the first torso area is larger than the arrangement interval dimension of the elastic members in the second torso area.
- the surface pressure per fixed area in the first waistline region and the second waistline region is substantially equal, and the first waistline region is changed to the second waistline region with respect to adhesion to the skin.
- many conventional disposable diapers generally have a soft appearance with a loose crotch in the worn state.
- the term “mocomoco” means an excessively expanded state or an excessively expanded state. Wearing diapers like this If it is used, the position of the diaper is likely to shift due to the movement of the wearer who does not move the foot easily, so leakage tends to occur. In addition, if the crotch is loose, it becomes difficult to wear a trousers or other outerwear on the diaper, and even if it can be worn somehow, its appearance is not good.
- the absorbent body includes a first absorbent body having a narrow width at the crotch portion and a pair of second absorbent bodies provided at positions separated from the first absorbent force on both sides of the narrowed portion.
- a disposable diaper in which the first absorbent body and a pair of second absorbent bodies are connected by a hydrophilic sheet has been proposed (see Patent Document 3 below).
- a diaper has also been proposed in which, among the absorbent bodies divided into three at the crotch, the absorbent bodies located on both sides in the width direction of the diaper are raised.
- the absorber includes a first absorber having a narrow width at the crotch portion and a pair of second absorbers provided at positions separated from the first absorber force on both sides of the narrow portion.
- a leak-proof cuff having an elastic body at the free end is disposed on both sides of the second absorbent body in the longitudinal direction opposite to the first absorber.
- a first absorber that is positioned flat in the center along the longitudinal direction of the diaper, and a gap is provided at least partially between the first absorber on both sides of the first absorber.
- Placed A disposable diaper is proposed in which an elastic body is attached to an upper portion of the second absorbent body, and the second absorbent body is provided with a standing tendency and gathers. (Refer to Patent Document 5 below).
- Patent Document 1 Japanese Patent Laid-Open No. 9 84826
- Patent Document 2 Japanese Utility Model Publication No. 6-421
- Patent Document 3 Japanese Patent Publication No. 7-28892
- Patent Document 4 Japanese Patent Laid-Open No. 10-5274
- Patent Document 5 Patent No. 2884355 specification
- the first object of the present invention is to prevent the diaper from falling off due to the movement of the wearer while wearing the diaper, and the lower part of the crotch from sagging due to absorption of urine, etc. To provide diapers.
- the second object of the present invention is that the appearance is clean in the wearing state, the fitting property and the leakage prevention performance at the crotch are excellent, and the leakage prevention cuffs provided on both sides are provided from the redder opening. It is difficult to squeeze out, use, and provide diapers.
- a first invention of the present invention is a disposable diaper comprising an absorbent main body having a top sheet and an absorbent core, wherein a waist opening and a pair of redder openings are formed.
- the absorbent core includes a central absorbent body and a pair of side absorbent bodies provided on both sides of the central absorbent body, and each of the central absorbent body and the pair of side absorbent bodies is at least in the crotch region. Separated from each other near the outer edge of each of the pair of side absorbers.
- An elastic member for starting up the absorbent body is arranged along the longitudinal direction, and each side absorbent body stands up when the diaper is worn. When the diaper is worn, the iliac crest force of the wearer
- the second invention of the present invention is a disposable diaper comprising an absorbent main body having a topsheet and an absorbent core, the absorbent core comprising both a central absorbent body and the central absorbent body.
- a pair of side absorbers provided on the sides, and the central absorber and the pair of side absorbers are separated from each other at least at the crotch portion, and the side absorber stands on both sides of the absorbent core.
- Elastic members for raising are arranged along the longitudinal direction, and the absorbent main body is configured such that both side portions of the crotch part stand up, and a leak-proof cuff is formed on both sides of the absorbent main body.
- the leak-proof cuff includes a leak-proof cuff forming sheet joined to the absorbent main body, and a leak-proof cuff forming elastic member that is fixed in the vicinity of a free end of the leak-proof cuff forming sheet. It is equipped with a member, and the disposable diaper is developed By providing a disposable diaper in which an elastic member for pulling the leak-proof cuff is provided at a position on the outer side in the diaper width direction than the elastic member for raising the side absorber in the leak-proof cuff. The second object has been achieved.
- FIG. 1 is a perspective view of a pants-type diaper as one embodiment (first embodiment) of the first invention of the present invention.
- FIG. 2 is a plan view partially broken away showing a state in which the diaper shown in FIG. 1 is separated and expanded by a side seal portion, and the elastic member of each portion is expanded and expanded in a planar shape.
- FIG. 3 (a) is a plan view showing an absorbent core in the diaper shown in FIG.
- FIG. 3 (b) is a cross-sectional view taken along the line BB in FIG. 3 (a).
- FIG. 3 (c) is a cross-sectional view taken along the line CC of FIG. 3 (a).
- FIG. 4 is a longitudinal sectional view schematically showing a section taken along line IV-IV in FIG.
- FIG. 5 is a longitudinal sectional view schematically showing a cross section taken along line CL in FIG. 2.
- FIG. 6 is a plan view showing a developed state of the exterior body in FIG.
- FIG. 7 is an explanatory view showing an iliac bone.
- FIG. 8 is an explanatory view showing a method of calculating the slipping-off force in the wearer's waist.
- FIG. 9 is an explanatory view showing a method for measuring the height of the superior anterior iliac spine.
- FIG. 10 (a) is a perspective view showing another embodiment of the diaper of the first invention of the present invention.
- FIG. 10 (b) is a plan view showing a developed state of the diaper shown in FIG. 10 (a).
- FIG. 11 is a schematic half sectional view showing a wearing state of an embodiment of the first invention of the present invention.
- FIG. 12 (a) is a plan view showing an absorbent core according to another embodiment of the first invention of the present invention.
- FIG. 12 (b) is a plan view showing an absorbent core according to another embodiment of the first invention of the present invention.
- FIG. 12 (c) is a plan view showing an absorbent core according to another embodiment of the first invention of the present invention.
- FIG. 13 is a perspective view of a pant-type diaper as one embodiment (second embodiment) of the second invention of the present invention.
- FIG. 14 is a plan view showing a state in which the diaper shown in FIG. 13 is separated and expanded at the side seal portion, and the elastic member of each portion is expanded and expanded in a flat shape, partially broken.
- FIG. 15 (a) is a plan view showing the absorbent core in the diaper shown in FIG.
- FIG. 15 (b) is a cross-sectional view taken along the line BB of FIG. 15 (a).
- FIG. 15 (c) is a cross-sectional view taken along the line CC in FIG. 15 (a).
- FIG. 16 is a schematic half sectional view showing a wearing state of the comparative reference form of the second invention of the present invention.
- FIG. 17 is a schematic perspective view showing the seated state of the second embodiment when worn.
- FIG. 18 is a view corresponding to FIG. 5 for the third embodiment of the second invention of the present invention.
- FIG. 19 is a plan view showing another embodiment of the absorbent core according to the present invention.
- FIG. 20 is a plan view showing still another embodiment of the absorbent core according to the present invention.
- FIG. 21 (a) is a plan view showing still another embodiment of the absorbent core according to the present invention.
- FIG. 21 (b) is a BB cross-sectional view shown in FIG. 21 (a).
- FIG. 21 (c) is a cross-sectional view taken along the line CC of FIG. 21 (a).
- FIG. 22 is a view corresponding to FIG. 5 for the diaper of the fourth embodiment of the second invention of the present invention using the absorbent core shown in FIG. 21 (a).
- FIG. 23 is a view corresponding to FIG. 5 for a diaper of a fifth embodiment of the second invention of the present invention using the absorbent core shown in FIG. 21 (a).
- the disposable diaper 1 (hereinafter also simply referred to as diaper 1) of the present embodiment is a so-called pant-type diaper, and as shown in FIGS. 1 to 5, a liquid-permeable topsheet 2 and a liquid-retaining absorbent.
- An absorbent body 5 having a core 4 is provided, and an exterior body 10 is provided on the non-skin contact surface side of the absorbent body 5.
- the diaper 1 is divided into an abdominal side A that is disposed on the wearer's abdomen, a back side B that is disposed on the back of the wearer, and a crotch C located therebetween.
- the ventral side A, the back side B, and the crotch C are in the developed state (a state in which the elastic members of each part are stretched and expanded in a flat shape, as shown in FIG. 2) in the longitudinal direction (FIG. 2).
- Each area is divided into three areas so that the total length in the vertical direction is divided into approximately three equal parts.
- non-skin contact surface side refers to a surface that is directed to the side opposite to the wearer's skin side when worn, among the front and back surfaces of each member such as the absorbent main body. On the side. Further, the “skin contact surface side” is the surface side of the front and back surfaces of each member that is placed on the wearer's skin side when worn.
- the absorbent main body 5 has a vertically long rectangular shape, and is known in the art such as a hot melt adhesive so that its longitudinal direction coincides with the longitudinal direction of the diaper so that the abdominal side A force also extends to the back side B. Joining hands The outer body 10 is joined to the central portion in the width direction by a step.
- the outer body 10 has both side edges of the part located on the ventral side A and both side edges of the part located on the back side B by a known joining means such as heat seal, high frequency seal, ultrasonic seal, etc.
- the pair of side seal portions S and S are formed by joining together.
- a waist opening 7 and a pair of redder openings 8 and 8 are formed in the diaper 1 by the joining.
- the above-described configuration of the diaper 1 is the same as that of a conventionally known diaper.
- the absorbent core 4 in the diaper 1 includes a central absorbent body 41 and a pair of side absorbent bodies 42, 42 provided symmetrically on both sides of the central absorbent body 41. It has.
- the central absorbent body 41 and the pair of side absorbent bodies 42 and 42 are separated at least in the crotch C.
- One side in the longitudinal direction and the other part in the longitudinal direction of the side absorbent body 42 are connected to each other at one longitudinal part (abdominal side part) F and the other longitudinal part (back side part) R of the central absorbent body 41, respectively. ing. Therefore, the cut-out portions 43 and 43 having a hollow shape are formed between the central absorbent body 41 and the pair of side absorbent bodies 42 and 42, respectively.
- the absorbent core 4 is disposed on the diaper 1 so that the side absorbent bodies 42 and 42 are disposed at least on the crotch C, as shown in FIGS. 2 and 3 (a).
- the absorbent core 4 is arranged such that the side absorbent bodies 42 and 42 are arranged in the crotch part C and the one longitudinal part F of the central absorbent body 41 is located in the ventral part A.
- the longitudinal direction one part F, the longitudinal direction center part M, and the longitudinal direction other part R are arranged so that the longitudinal length of the absorbent core 4 in the state shown in FIG. Each area is divided into areas.
- the central absorbent body 41 includes a T-shaped upper absorbent body 411 and an hourglass-shaped lower absorbent body 412 larger than the upper absorbent body 411. It consists of.
- the upper absorbent body 411 is overlapped on the skin contact surface side of the lower absorbent body 412 from the longitudinal direction one part F to the longitudinal center part M of the lower absorbent body 412.
- the pair of side absorbers 42, 42 are formed integrally with the lower absorber 412.
- Each of the upper absorbent body 411 and the lower absorbent body 412 is a mixed product of fiber components such as pulp fibers and a superabsorbent polymer.
- the absorbent core 4 is entirely made of a water-permeable coating made of tissue paper or a water-permeable nonwoven fabric. Covered with a cover sheet (not shown)!
- elastic members 9 for starting up the side absorbers are arranged in the longitudinal direction in the vicinity of the outer edges 42a, 42a of the pair of side absorbers 42, 42, respectively. It is arranged along.
- the elastic member 9 is arranged between the top sheet 2 and both side edges of the absorbent core 4 in the width direction of the diaper 1, and in the longitudinal direction of the diaper 1, the stomach side A and the back side of the diaper More specifically, it is arranged so as to extend over substantially the entire length in the longitudinal direction of the absorbent core 4 so as to extend between the portion B and the portion B.
- the elastic member 9 is joined to the adjacent topsheet 2 in a stretched state, and when the diaper is worn, the side absorbers 42 and 42 stand up by contracting the coasting member 9.
- a pair of leak-proof cuffs 6 and 6 are formed on both sides in the longitudinal direction of the absorbent main body 5 as shown in FIGS. Each of the leak-proof cuffs 6 is formed so as to extend in the longitudinal direction of the diaper.
- the leak-proof cuff 6 is an elastic member for forming a leak-proof cuff that is fixed in the stretched state near the free end of the leak-proof cuff forming sheet 60 and the leak-proof cuff forming sheet 60 joined to the absorbent main body 5.
- 61 and an intermediate elastic member 62 fixed in an extended state at the intermediate portion between the free end and the fixed end of the leak-proof cuff 6.
- the intermediate elastic member 62 contracts, so that the side absorbers 42 and 42 are further raised.
- the presence of the intermediate elastic member 62 makes it easier for the side absorbent body 42 to enter the wearer's buttocks, and more effectively prevents the crotch from hanging down due to the presence of the side absorbent body 42.
- the side absorbent bodies 42 and 42 are made to stand by contraction of the elastic member 61 for forming the leak-proof cuff, so that the leak-proof property is improved by the elastic member 61 being along the flange. It has been made.
- the elastic member 9 and the intermediate elastic member 62 are preferably disposed along both side portions of the absorbent main body 5 U, .
- a sheet of water-repellent sheet with a predetermined width is folded as a leak-proof cuff forming sheet 60 at a fold line along the longitudinal direction, and the opposite layers are hot-melt bonded.
- a two-layered sheet joined with an agent or a partial heat seal or ultrasonic seal is used.
- the elastic member 61 for forming a leak-proof cuff is a layer of this two-layer sheet. It is fixed in a stretched state between them.
- the surface sheet 2 is composed of the entire area of the absorbent core 4 on the skin contact surface 4a side, both side edges 4b, 4b of the absorbent core 4 in the width direction.
- the entire area of the absorbent core 4 and the vicinity of both sides of the diaper width direction on the non-skin contact surface 4c side of the absorbent core 4 are covered.
- Both end portions 21 and 21 of the surface sheet 2 further cover a part of the central absorbent body 41 on the non-skin contact surface side.
- the absorbent main body 5 in the diaper 1 has a liquid-impermeable back sheet 3 that covers the entire area of the absorbent core 4 on the non-skin contact surface 4c side.
- the back sheet 3 is sandwiched and fixed between the absorbent core 4 and the surface sheet 2 covering the both sides of the absorbent core 4 near the non-skin contact surface 4c side in the diaper width direction.
- the front surface sheet 2 is bonded and fixed to the back surface sheet 3 and the leakage prevention cuff forming sheet 60 at both side end portions 21 and 21 by a bonding means such as heat sealing to form main body bonding fixing portions 67 and 67. is doing.
- the main body bonding / fixing portion 67 is located on the inner side edge of the side absorbent body 42 (the portion located most inward in the width direction on the side absorbent body 42). It is located in the direction.
- the main body bonding / fixing portion 67 is formed by using known bonding means such as heat sealing, high frequency sealing, ultrasonic sealing, hot-melt adhesive, and the like, and the side end portions of the leakage prevention cuff forming sheet 60 and the surface sheet 2. It is formed by bonding 21 and the back sheet 3.
- the front and back surface joining portions 22 are formed by joining through the separating portions 43 of the absorbent core 4.
- the said covering sheet (not shown) exists in the separation part 43, the surface sheet 2 and the back surface sheet 3 are joined via this covering sheet.
- a leakproof cuff forming sheet 60 and an absorbent main body 5 are sequentially joined.
- the outer end in the width direction of the joint fixing part 13 that joins and fixes the exterior body 10 and the leakage prevention cuff forming sheet 60 is located outward of the main body joint fixing part 67 in the diaper width direction.
- the exterior body 10 has at least two nonwoven fabrics, that is, an outer layer nonwoven fabric 11 and an inner layer nonwoven fabric 12 disposed on the inner surface side of the outer layer nonwoven fabric 11, as shown in FIGS. ing.
- the layer nonwoven fabric 11 forms the outer surface of the diaper 1, and the inner layer nonwoven fabric 12 is bonded to the inner surface side of the outer layer nonwoven fabric 11 with an adhesive such as a hot melt pressure-sensitive adhesive.
- the outer layer nonwoven fabric 11 has extended portions that extend from the front and rear end edges (both ends in the longitudinal direction) of the inner layer nonwoven fabric 12, and the extended portions are folded back toward the absorbent main body 5 side.
- the extended portion of the folded outer layer nonwoven fabric 11 covers the front and rear end portions of the absorbent main body 5 (that is, the surface sheet 2 at the front and rear end portions of the absorbent main body 5).
- a plurality of waist part elastic members 71, 71 are arranged in the width direction of the front and rear end portions of the exterior body 10 along the front and rear end edges.
- the waist elastic members 71 and 71 are sandwiched and fixed in an expanded state by the outer layer nonwoven fabric 11 and the inner layer nonwoven fabric 12.
- the elastic members 71, 71 of the waist portions of the elastic members 71, 71 are formed when the side edges Al, A2 of the ventral side A of the diaper 1 and the side edges Bl, B2 of the back side B are joined to each other.
- the force that is arranged so that the ends overlap each other, and the ends of the ambipolar members 71, 71 are continuously arranged up to both joints.
- a substantially continuous ring-shaped waist gather is formed in the vicinity of the waist opening 7 of the diaper 1.
- Redder elastic members 81 and 82 are disposed on the left and right curved portions of the outer package 10. Each of the redder portion elastic members 81 and 82 is disposed along the curved portion. Each of the redder portion elastic members 81 and 82 is disposed between the outer layer nonwoven fabric 11 and the inner layer nonwoven fabric 12, and is fixed to the nonwoven fabrics 11 and 12 in a stretched state by a predetermined joining means. One end of each of the redder portion elastic members 81 and 82 overlaps at the crotch portion C. On the other hand, the other ends of the leg part inertia members 81 and 82 are terminated at the positions of the side edges of the ventral part A and the back part B.
- the elastic members 81 and 82 of the redder portion are formed by connecting the side edges Al and A2 of the ventral side A of the diaper 1 and the side edges Bl and B2 of the back side B to each other.
- the force of the end portions overlaps each other, and the end portions of the aerobic members 81 and 82 are continuously arranged up to both joint portions.
- a substantially continuous ring-shaped redder gather is formed in the vicinity of the redder openings 8 and 8 of the diaper 1.
- the diaper 1 there are many elastic members extending in the width direction of the diaper 1 between the waist opening 7 and the redder opening 8 in the ventral side A and the back side B of the diaper 1, respectively. Arrangement It is.
- a first region 91 and a second region 92 extending in the width direction of the diaper 1 are provided between the waist opening 7 and the redder opening 8 as shown in FIG. Is formed.
- a first elastic member 91a is disposed in the first region 91
- a second elastic member 92a is disposed in the second region 92.
- the first region 91 is located between the waist opening 7 and the redder opening 8
- the second region 92 is located between the first region 91 and the wreck opening 8.
- the first elastic member 91a and the second elastic member 92a are both clamped and fixed by the outer layer nonwoven fabric 11 and the inner layer nonwoven fabric 12 in an expanded state.
- the first elastic member 91a is connected to the first elastic member 91a and the dorsal side of the abdominal side A when both sides A2 of the ventral side A of the diaper 1 and both side edges Bl and B2 of the back side B are joined to each other.
- the end portions of the elastic members 9 la and 9 la are arranged up to the force joint portion where the end portions of the portion B with the first elastic member 91a overlap each other.
- Each of the first elastic member 91a and the second elastic member 92a extends between the left and right side edges of the diaper 1 (that is, the left and right side edges of the outer body 10) and the left and right side edges of the absorbent core 4. It is extended. Further, the first elastic member 91a and the second elastic member 92a are substantially not present at the site where the absorbent core 4 is present. As a result, the gathers formed in the first region 91 and the second region 92 are located between the left and right side edges of the diaper 1 and the left and right side edges of the absorbent core 4, and the absorbent core 4 is Gather is not substantially formed in the existing site.
- the portion where the absorbent core 4 is present even in the mounted state is absorbed in the appearance of the diaper 1 in which the exterior body 10 is not contracted by contraction of the first elastic member 91a and the second elastic member 92a.
- the performance is also good.
- a stretchable material such as natural rubber, polyurethane-based resin, urethane-based resin, elastic nonwoven fabric, or hot-melt elastic member is used as a thread ( Those formed in the form of thread rubber), belt-like (flat rubber), net-like (net-like) or film are preferably used.
- the pressure when the diaper 1 is worn in the first region 91 is set to 1.1 to 2.5 kPa.
- the first region 91 is a region where the wearer's iliac crest is in contact with the upper anterior iliac spine when the diaper 1 is worn (hereinafter also referred to as “iliac region”). Preferably it is formed.
- the iliac crest and superior anterior iliac spine are anatomical terms.
- the iliac crest is a part indicated by reference numeral 15 in FIG. 7, and the upper anterior iliac spine is a part indicated by reference numeral 16 in FIG.
- an elastic member disposed in the waist opening has been used. It has been considered effective to increase the tightening pressure so that the pants-type diaper is brought into close contact with the wearer's body through the waist opening (for example, see Patent Document 2 described above).
- FIG. 8 shows a state in which the baby's body is regarded as a cone.
- ⁇ represents the angle between the perpendicular to the tangent at the waist (point A) and the horizontal line facing the center of the body.
- F indicates the tightening force of the elastic body
- P indicates the frictional force resulting from the tightening force F
- fl indicates the displacement drop force due to the tightening force F
- f2 indicates the vertical resistance.
- fl Fsin ⁇
- the pressure when the diaper 1 is worn in the first region 91 is 1.1 to 2.5 kPa. If the pressure when the diaper 1 is worn in the first region 91 is less than 1. lkPa, it is difficult to fix the first region 91 of the diaper 1 to the iliac region of the wearer. One slips off and the appearance of the diaper 1 when worn is greatly reduced. Special In addition, bumping at the crotch c of the diaper 1 becomes prominent, and urine and feces leak.
- the pressure when the diaper 1 is worn in the first region 91 is more than 2.5 kPa, the wearer's body will be excessively tightened and the wearing operation of the diaper 1 will be difficult.
- the pressure when the diaper 1 is worn in the first region 91 is 1. It is preferable that the pressure is 1 to 2. OkPa 1. It is more preferable that the pressure is 2 to 1.8 kPa.
- the pressure when the diaper 1 is worn in the first region 91 can be controlled, for example, by adjusting the material, thickness, elongation rate, or arrangement interval of the first elastic member 91a.
- the wearing pressure of the diaper 1 in the first region 91 is determined by attaching the diaper 1 to a cylinder having a circumference of 500 mm, and using a wearing pressure measuring device (a contact pressure measuring device (A MI3037- 2) Measured by).
- a wearing pressure measuring device a contact pressure measuring device (A MI3037- 2) Measured by.
- the specific measurement method is as follows.
- the mounting pressures (P1) to ( ⁇ ) are measured over the range where the waist opening force in the exterior body 10 and the left and right side parts to the redder opening part are joined together.
- P1 and ⁇ are measured on the ventral side, 4 points in total, 2 on each side. These average values are used as the pressure on the ventral region.
- on the back side measure a total of four points, and use the average value as the back side pressure.
- the distance between parts corresponding to 1.1 to 2.5 kPa continuously in the value of ⁇ from P1 is the width of the first region 91.
- the width of the first region 91 (6 ⁇ 3)
- X 5 15 mm.
- the first area at that time 91 The center of is the midpoint of measurement point 3 and measurement point 6.
- the reason why the circumference of the cylinder is set to 500 mm is that the average length of the belly circumference of the infant who is the main subject wearing the diaper 1 of the present embodiment is approximately 500 mm.
- the length of the abdomen around here is the average value of the abdomen measured in the standing and sitting positions, taking into account the change in the circumference of the abdomen when the infant's posture changes.
- a cylinder with a circumference of 850 mm is used instead of a cylinder with a circumference of 500 mm.
- the wearer's iliac crest force The force on the upper anterior iliac spine 4 (the iliac region) has a certain width, and the first region 91 of the diaper 1 is within the width. By fixing to the part, the diaper 1 can be effectively prevented from falling off.
- the width of the first region 91 (that is, the length of the first region 91 along the longitudinal direction of the diaper 1) W1 (see FIG. 6) is set to 12 to 35 mm. If this width W1 is 20 to 35 mm, especially 25 to 30 mm, the diaper 1 can be prevented from slipping off more effectively, and the appearance of the diaper 1 and the operation of wearing the diaper 1 ( It is possible to further improve the ease of wearing.
- the size of the diaper 1 and the wearer's dimensions should be adjusted so that the first region 91 abuts the site from the wearer's iliac crest to the upper anterior iliac spine.
- the relationship with the physique is important. For example, when an infant who is the main wearer of a pants-type diaper is considered, when the diaper 1 is deployed, the center position of the first region 91 on the ventral side A (center position along the longitudinal direction of the diaper 1) and the diaper The distance K1 between the longitudinal center line CL of 1 and the center position of the first region 91 of the back side B (in the longitudinal direction of the diaper 1) when the distance K1 (see FIG. 6) is 180 to 230 mm and the diaper 1 is deployed.
- the first region 91 can be successfully brought into contact with the wearer's iliac region by setting the distance K2 (see Fig. 6) between the longitudinal center line CL of the diaper 1 to 180-230 mm. Can be made.
- This value was determined by conducting body measurements of approximately 350 infants, who are the primary subjects of pants-type diapers. Specifically, as shown in FIG. 9, this value is obtained by taking the left and right center point of the ventral side at the horizontal position height of the upper anterior iliac spine as the upper anterior iliac spine high anterior center, and the upper anterior iliac spine. If the center point of the dorsal side at the horizontal position of the back is the posterior center of the height of the upper anterior iliac spine, Upper foregut length This is a bisected figure obtained by calculating the length of the osteophyte and the length of the upper anterior iliac spine.
- the first region 91 can be brought into more successful contact with the wearer's iliac region.
- the distance K1 and K2 is set to 300 to 350 mm, particularly 305 to 335 mm, so that the first region 91 can be brought into contact with the wearer's iliac region more successfully. .
- the first region 91 exists in the ventral part A and the dorsal part B, but the pressures during the wearing in the ventral part A and the dorsal part B do not have to be exactly the same. That is, if the pressure at the time of wearing of the first region 91 on the ventral side A and the back side B is 1.1 to 2.5 kPa, the elastic material, thickness, elongation rate, The arrangement interval may be different between the ventral part A and the dorsal part B. However, if the configurations of the first regions 91 of the ventral part A and the dorsal part B are excessively different, the left and right side parts of the longitudinal front and rear end parts of the outer body 10 are joined to each other.
- the ratio of (A – B) ZA should be within 30% when the larger pressure when wearing the first region 91 in the ventral part A and the dorsal part B is A and the smaller one is B. Is preferred.
- the longitudinal center line CL of the diaper 1 refers to the both sides BA1, A2 of the ventral side A of the diaper 1 and the side edges Bl, B2 of the dorsal side B of each other without substantially shifting. When joined, it means a straight line along the width of the diaper that passes through the midpoint of Al and Bl in the expanded state of diaper 1 (see Fig. 6).
- both sides A2 of ventral side A are not joined to both side edges Bl, B2 of dorsal side B, and are more longitudinally inward than both side edges Bl ', B2'.
- the longitudinal center line CL of the diaper is the same as described above. Determine.
- the overall length L (see Fig. 6) of the outer package 10 in the unfolded state of the diaper 1 can be arbitrarily set, but "clean feeling” and "prevention of slipping off” when the diaper is mounted and after use.
- the in consideration of this, the total length L should be set to 470-540mm for infant diapers.
- the viewpoint power is preferably set to 490 to 580 mm.
- the total length L is preferably set to 780 to 830 mm, and is preferably set to 800 to 880 mm from the viewpoint of completely covering the navel.
- the diaper 1 is fixed to the wearer's body mainly by the tightening force of the first elastic member 91a disposed in the first region 91.
- the tightening force by the elastic member arranged in the waist opening 7 is the main means for fixing the diaper 1 to the wearer's body in the diaper 1 of this embodiment. is not.
- the tightening force of the waist opening 7 is increased, the slippage of the diaper 1 is promoted.
- the pressure of the waist opening 7 when the diaper is worn is lower than that of the conventional pant-type diaper 0.3 to 1.2 kPa. .
- This pressure is preferably 0.5 to 1.
- OkPa lower than the average value of the pressure in the first region 91 when the diaper is worn.
- the pressure of the waist opening 7 when wearing the diaper within the above range, there is an advantage that the waist opening 7 can be easily expanded when the diaper 1 is worn, and the wearing operation is facilitated. If the pressure at the waist opening 7 is less than 0.3 kPa, the natural length of the diaper 1 before wearing becomes large, and the appearance of the diaper 1 as a garment may be poor. .
- the pressure force of the waist opening 7 when wearing a diaper is more preferably 0.4 to 1. OkPa, and even more preferably 0.4 to 0.8 kPa, the diaper 1 is further displaced. It can be effectively prevented.
- the pressure in the waist opening 7 can be measured by the same method as the pressure in the first region 91 described above. That is, a cylinder having a circumferential length of 500 mm is inserted (attached) into the waist opening 7 of the diaper 1, and the center of the air pack of the attachment pressure measuring device is positioned 15 mm from the front end of the waist opening in the longitudinal direction of the diaper. Position and measure the mounting pressure. Measure 10 points at 50mm intervals in the circumferential direction, and use the average value as the pressure at the waist opening.
- the position closest to the edge is the waist opening.
- the pressure of the waist opening 7 can be controlled, for example, by adjusting the material, thickness, elongation rate, or arrangement interval of the waist elastic member 71.
- the pressure of the waist opening 7 falls within the pressure range of the first region 91, the position is included in the first region 91.
- the pressure in a region other than the first region 91, the waist opening 7 and the redder opening 6 when the diaper is worn for example, between the first region 91 and the redder opening 6
- the pressure in the second region 92 located is preferably 0.2 to 0.8 kPa, more preferably 0.3 to 0.6 kPa.
- the diaper 1 can be brought into close contact with the wearer's body with an appropriate pressure, and liquid leakage can be effectively prevented.
- the second region 92 contacts the lower region (lower abdomen) of the wearer's iliac region.
- the width of the second region 92 (that is, the length of the second region 92 along the longitudinal direction of the diaper 1) W2 (see FIG. 6) is preferably 40 to 70 mm, particularly 45 to 65 mm.
- the pressure in the first region 91 is the highest.
- the pressure in the second region 92 where the pressure in the waist opening 7 is high is preferably the lowest.
- the distance from both side edges 41a, 41a of the central absorbent body 41 to the outer edge 42a of each side absorbent body 42 in the expanded state of the diaper K3 is preferably 30 to 55 mm, more preferably 35 to 50 mm.
- the ratio between the distance K1 (see Fig. 6) and the distance K3 (K1ZK3) and the ratio between the distance K2 (see Fig. 6) and the distance K3 (K2ZK3) are 3.3 to 7.7, respectively. It is more preferable that it is 4.0 to 6.6.
- the distance K3 (see FIG. 3 (a)) from the side edges 4la, 41a of the central absorbent body 41 to the outer edges 42a of the side absorbent bodies 42 is preferably 50 to 80 mm. More preferably, it is 75 mm.
- the ratio of the distance K1 (see FIG. 6) to the distance K3 (K1ZK3) and the ratio of the distance K2 (see FIG. 6) to the distance K3 (K2ZK3) are 3.5 to 7.0, respectively.
- a certain force S is preferable, and 4.0 to 6.4 is more preferable.
- the gathers of the side absorbent body can easily enter the buttocks and the diaper can be easily fitted to the body. Further, since the diaper can be worn in the first region 91 so that it is difficult to slip off, the diaper is prevented from sagging and the appearance of the diaper is improved.
- the ratio (K1ZK3) and the ratio ( ⁇ 2 ⁇ 3) are 3.3 or more, the side absorbent body force at the crotch is reduced, and the crotch is reduced depending on the size with the first region 91.
- the appearance of a diaper can be put on without making it happen.
- the absorbent core 4 in the crotch is composed of a central absorbent body 41 and side absorbent bodies 42 located on both sides thereof, and the side absorbent body 42 is worn when worn.
- the technology to erect is a known force.
- the present inventors have found that in conventional diapers, such a configuration promotes the diaper slippage. Furthermore, the present inventors can prevent such slippage by making the distances Kl, ⁇ 2 and ⁇ 3 satisfy the above-mentioned conditions, and also prevent the crotch from sagging when urine is absorbed. I learned that it can be prevented.
- the distances Kl, ⁇ 2 and ⁇ 3 are set so as to satisfy the above conditions, thereby effectively preventing the side absorber 42 from slipping off and effectively preventing the lower part of the crotch from drooping during liquid absorption. be able to.
- the distance ⁇ 3 is more preferably 35 to 50 mm, particularly 35 to 45 mm. preferable.
- the ratio (K1ZK3) and the ratio (K2ZK3) are preferably 3.6 to 6.6, more preferably 4.0 to 6.6, respectively.
- the distance K3 is preferably 55 to 75 mm, particularly 60 to 70 mm.
- the ratio (K1ZK3) and the ratio (K2ZK3) are preferably 4.0 to 6.4, particularly 4.3 to 5.8, respectively.
- the distance K3 is measured on the longitudinal center line CL of the diaper.
- the width W (see Fig. 3 (a)) of the central absorber 41 on the longitudinal center line CL of the diaper is determined for infants.
- diapers it is preferably 35 to 55 mm, more preferably 40 to 50 mm, and in adult diapers, it is preferably 45 to 65 mm, more preferably 50 to 60 mm.
- the ratio (K3ZW) between the distance K3 and the width W is preferably 0.6 to 1.4, and more preferably 0.7 to 1.1.
- the width (K3 X 2 + W) of the absorbent core 4 on the longitudinal center line CL is preferably 100 to 150 mm, more preferably 100 to 140 mm for infant diapers. Is preferably 190 to 220 mm, more preferably 190 to 210 mm.
- the separation part 43 between the central absorbent body 41 and the side absorbent body 42 in the crotch part C has the largest width in the vicinity of the central part in the longitudinal direction of the absorbent core 4 as shown in FIG. It is preferable that the width is wide and the width gradually decreases as it is directed to the front and rear ends in the longitudinal direction.
- the separation part 43 has a linear inner edge of the side absorbent body 42, and both side edge forces of the central absorbent body 41 should be near the central part in the longitudinal direction. It is more preferable that the shape is a straight, slightly curved arc shape that gradually approaches the inner edge of the side absorber 42 with force applied to the front and rear ends in the longitudinal direction.
- the total length L1 (see FIG. 3 (a)) of the side absorber 42 is preferably 170 to 220 mm, particularly 175 to 210 mm.
- the material constituting each part of the diaper 1 of the present embodiment is commonly used in the technical field. Those that are usually used can be used without particular limitation.
- a hydrophilic and liquid-permeable nonwoven fabric or an apertured film can be used.
- a liquid-impermeable material or a water-repellent material can be used.
- a resin film, a laminate material of the resin film and a nonwoven fabric, or the like can be used.
- As the water-repellent material a water-repellent nonwoven fabric or the like can be used.
- the water-repellent nonwoven fabric the same nonwoven fabric as a material for forming a sheet for forming a leak-proof cuff described later can be used.
- the water-absorbent core 4 includes a fiber aggregate such as pulp fiber or continuous fiber (tow), or a fiber aggregate and a water-absorbent polymer (mixed product of a water-absorbent polymer and a fiber material). Or the like).
- the water-absorbing polymer include sodium polyacrylate, (acrylic acid-butyl alcohol) copolymer, cross-linked sodium polyacrylate, (starch acrylic acid) graft copolymer, and (isobutylene maleic anhydride) copolymer. Examples thereof include a polymer, its saponified product, and polyaspartic acid.
- fibers constituting the absorbent core 4 include hydrophilic fibers such as pulp fibers, rayon fibers, cotton fibers, and cellulose acetate, polyolefin fibers such as polyethylene and polypropylene, and condensation fibers such as polyester and polyamide. Can be used.
- the water-absorbing polymer and fiber can be used alone or in combination of two or more.
- the leak-proof cuff forming sheet 60 a composite nonwoven fabric having a multilayer structure composed of spunbond 'melt blown' spunbond, etc., a spunbond nonwoven fabric, a heat bond nonwoven fabric, an air-through nonwoven fabric, etc. can be used. From the viewpoint of water resistance and the like, a multilayer nonwoven fabric composed of spunbond and meltblown is preferable.
- the basis weight of the cuff-forming sheet 60 is about 1 2gZm 2 is preferred.
- the leak-proof cuff forming sheet has a water pressure of 3 cm or more measured according to the water resistance test (low water pressure method) in the waterproof test method of JIS L1092 (1998) textiles. It is more preferable that When measuring the water pressure resistance, raise the leveling device filled with water at a speed of 10 ⁇ 0.5 cmZmin. Measure the water level at the time. When the test piece is completely attached, measure without delay. [0061] According to the diaper 1 of the present embodiment, the first region 91 fits well to the wearer's iliac region, and effectively prevents the diaper from falling off.
- the absorbent core may be configured as shown in FIGS. 12 (a) to 12 (c).
- reference numeral 44 denotes a tissue paper (mounting paper) that covers the absorbent core 41.
- FIGS. 12 (a) to 12 (c) the absorbent paper The part covering the skin contact surface side of the core 4 is removed and shown.
- the central absorbent body in these absorbent cores 4 is similar to the diaper 1 described above.
- the portion 41 can also be a multilayer structure such as a two-layer structure.
- the absorbent core 4 shown in FIG. 12 (a) also has a single-layer absorber force in which a central absorber 41 and a pair of side absorbers 42 are formed in a body.
- the side absorbent body 42 is connected to one side in the longitudinal direction of the central absorbent body 41, but is not connected to the other side in the longitudinal direction.
- the other end in the longitudinal direction of the portion 43 is open.
- the side absorbent body 42 is not connected to the central absorbent body 41, and both longitudinal ends of the separating part 43 are open.
- the force that forms both side edges EA1 and A2 of the ventral side A and the side edges Bl and B2 of the back side B to form the side seal portion S may be pre-engaged with various engaging members such as hooks, buttons, and hook-and-loop fasteners to form a pant-type shape.
- various engaging members such as hooks, buttons, and hook-and-loop fasteners to form a pant-type shape.
- the engaging position is not limited to a position directly beside the body, and may be a position slightly forward or slightly rearward of the body.
- the material of the force exterior body in which the exterior body 10 is composed of the outer layer nonwoven fabric 11 and the inner layer nonwoven fabric 12 is not limited thereto, and may be, for example, a laminated sheet of a nonwoven fabric and a water repellent sheet. .
- the disposable diaper (hereinafter also referred to as diaper) 1 of the second embodiment is a so-called pant-type diaper, as shown in FIGS. 13, 14, 15 (a) to 15 (c), 4 and 5.
- the absorbent body 5 having the liquid-permeable surface sheet 2 and the liquid-retaining absorbent core 4 is provided, and the exterior body 10 is further provided on the non-skin contact surface side of the absorbent body 5. It has.
- FIG. 4 and 5 are longitudinal sectional views of the first embodiment, but since the longitudinal sectional shape of the second embodiment is the same as the longitudinal sectional shape of the first embodiment, FIG. 4 and FIG. 5 will also be used to explain the vertical cross-sectional shape of the second embodiment.
- the diaper 1 is divided into an abdominal side A that is disposed on the wearer's abdomen, a back side B that is disposed on the back of the wearer, and a crotch C located therebetween.
- the ventral part A, the dorsal part B, and the crotch part C are in the longitudinal direction (FIG. 14) of the diaper 1 in the deployed state (the state in which the elastic members of the respective parts are stretched and expanded in a flat state, as shown in FIG. 14).
- Each area is divided into three areas so that the total length in the vertical direction is divided into approximately three equal parts.
- non-skin contact surface side refers to the side opposite to the skin side of the wearer when worn on the front and back sides (surfaces) of each member such as the absorbent main body. It is the side (surface) that is placed.
- skin contact surface side is sometimes used below, but this is the side (surface) that is placed on the skin side of the wearer when wearing, out of the front and back sides (surface) of each member. ).
- the “longitudinal direction” is a direction parallel to the long side of each member.
- the term “width direction” may be used, which is a direction orthogonal to the longitudinal direction.
- the absorbent main body 5 has a vertically long rectangular shape, and a known hot melt adhesive or the like is used so that the longitudinal direction thereof coincides with the longitudinal direction of the diaper so that the abdominal side A force also extends to the back side B.
- the outer body 10 is joined to the central portion in the width direction by the joining means.
- the exterior body 10 has both side edges of the part located on the ventral side A and the part located on the back side B. Both side edges are joined to each other by known joining means such as heat sealing, high-frequency sealing, and ultrasonic sealing, thereby forming a pair of side sealing parts. Also,
- a west opening 7 and a pair of redder openings 8, 8 are formed in the diaper 1.
- the above-mentioned structure of the diaper 1 of 2nd Embodiment is the same as that of a conventionally well-known diaper.
- the side portions of the absorbent main body 5 (specifically, The side absorber 42), which will be described later, is provided with an elastic member 9 for starting up.
- the absorbent main body 5 is configured such that the side portions 52, 52 (side absorbers 42, 42) in the crotch portion C stand up as shown in FIG.
- the leak-proof cuff 6 includes a leak-proof cuff forming sheet 60 joined to the absorbent main body 5, and an elastic member for forming a leak-proof cuff fixed in an extended state near the free end of the leak-proof cuff forming sheet 61. And an elastic member (intermediate portion elastic member) 62 for attracting the leak-proof cuff, which is fixed in an extended state between the fixed end and the free end of the leak-proof cuff 6.
- the absorbent core 4 is generally substantially vertically long (300 to 500 mm long, along the longitudinal direction of the diaper 1). It has a rectangular planar shape (80 to 170 mm wide), and is entirely covered with a water-permeable covering sheet (not shown) made of tissue paper or a water-permeable nonwoven fabric.
- the absorbent core 4 includes an hourglass-shaped central absorbent body 41 and a pair of side absorbent bodies 42, 42 provided symmetrically on both sides of the central absorbent body 41.
- the central absorbent body 41 and the pair of side absorbent bodies 42, 42 are separated at least in the crotch C.
- One side in the longitudinal direction and the other side in the longitudinal direction of the side absorber 42 are connected to each other at one side in the longitudinal direction (ventral side) F and the other side in the longitudinal direction (back side) R of the central absorbent body 41, respectively. Talk! Therefore, a cut-off portion 43, 43 is formed between the central absorbent body 41 and the pair of side absorbent bodies 42, 42.
- the longitudinal direction one part F, the longitudinal direction center part M, and the longitudinal direction other part R are such that the entire length in the longitudinal direction is divided into approximately three parts in the absorbent core 4 in the state shown in FIG. 3 areas Each area when divided.
- the absorbent core 4 is disposed in the diaper 1 so that the side absorbent bodies 42, 42 are disposed at least in the crotch region.
- the absorbent core 4 is arranged such that the side absorbent bodies 42, 42 are arranged in the crotch part C, and one longitudinal direction part F of the central absorbent body 41 is located in the ventral part A.
- the central absorbent body 41 includes a T-shaped upper absorbent body 411 and a sand clock-type lower absorbent body 412 that is larger than the upper absorbent body 411.
- the upper absorbent body 411 is overlapped on the skin contact surface side of the lower absorbent body 412 from one longitudinal part F of the lower absorbent body 412 to the central part M in the longitudinal direction (that is, in the vicinity of the urination point).
- the pair of side absorbers 42 and 42 are formed integrally with the lower absorber 412.
- the length d of the lower absorbent body 412 that protrudes from the edge of the upper absorbent body 411 Is preferably 0 to 20 mm, more preferably 5 to 15 mm.
- the thickness of the entire diaper is not increased so much, and the water-absorbing polymer and pulp in the vicinity of the urine void are not increased.
- the amount can be increased, the utilization efficiency of the water-absorbing polymer and pulp can be increased, and good leakage prevention performance can be realized.
- Polymer basis weight of the upper absorber 411 is preferably 80 ⁇ 230GZm 2, more preferably 10 0 ⁇ 200gZm 2. Pulp basis weight of the upper absorber 411 is preferably 80 ⁇ 230GZm 2, more preferably 100 ⁇ 200gZm 2.
- the polymer basis weight and pulp basis weight of the lower absorbent body 412 are preferably the same as those of the upper absorbent body 411.
- the polymer basis weight and pulp basis weight of the upper absorbent body 411 and the lower absorbent body 412 are less than the above lower limits, respectively, there is a problem in leakage prevention performance, and molding cannot be performed in a stable state of processing performance (cannot be placed uniformly) There is a risk of.
- the polymer basis weight and pulp basis weight of the upper absorbent body 411 and the lower absorbent body 412 are above the above upper limits, respectively, there is a problem in the fit property at the time of wearing or the absorbent body is excessively absorbed in the lower crotch after urination May swell and may cause a feeling of incongruity to the wearer.
- the weight ratio of the polymer and the pulp is preferably 4: 6 to 6: 4 in consideration of the mixed state of the pulp and the polymer.
- the total value of the polymer basis weight of the upper absorbent body 411 and the polymer basis weight of the lower absorbent body 412 is 160 to 400 g. / m 2 is preferred.
- the width W1 (see Fig. 15 (a)) of the central portion M in the longitudinal direction of the central absorbent body 41 (lower absorbent body 412) is preferably 30 to 80 mm, more preferably 40 to 70 mm.
- the central part M in the longitudinal direction of the central absorbent body 41 is an area arranged in the crotch part C. If the width W1 of the central portion M in the longitudinal direction is less than 30 mm, there is a risk that leaks are likely to occur especially in the crotch region, and the workability at the time of manufacturing the central absorbent body 41 may be deteriorated. If the width W1 exceeds 80 mm, the appearance when worn may be deteriorated and the fit at the crotch may be reduced.
- the width W2 (see Fig. 15 (a)) of the absorbent core 4 including the lower absorbent body 412 and the pair of side absorbent bodies 42, 42 is the appearance when worn (clean feeling) and the crotch part. From the viewpoint of fit property, it is preferably 80 to 170 mm, more preferably 90 to 160 mm.
- the side absorber 42 has a length (length in the longitudinal direction) L1 (see FIG. 15 (a)), preferably 100 to 270 mm, more preferably 120 to 250 mm, and its width W3 (See FIG. 15 (&)). Preferably, it is 10 to 50 mm, and more preferably 15 to 45 mm.
- the widths Wl, W2, and W3 are values measured on the center line in the width direction that bisects the length of the central absorbent body 41 in the longitudinal direction.
- the cut-off portion 43 has an arcuate shape extending in the longitudinal direction of the absorbent core 4.
- the length of the cut-off portion 43 matches the length L1 of the side absorber 42.
- the width W4 (see FIG. 15 (a)) of the separating portion 43 is preferably 5 to 30 mm, more preferably 5 to 25 mm.
- the shape of the outer edge 43b of the separation part 43 is a straight line extending along the straight inner edge of the side absorber 42.
- the shape of the inner edge 43a of the separation part 43 is a curved line extending along the curved outer edge of the central absorbent body 41.
- This bay curve shape is preferably the same as the curve shape of the wearer's inguinal portion when viewed macroscopically.
- ⁇ ⁇ "straight line” is not limited to a geometrical straight line, it is a straight line when viewed macroscopically. If present, for example, a slightly curved shape or a slightly irregular shape is included.
- the “curved linear shape” is not limited to a shape that is curved only in one direction and has no linear portion. If the curved linear shape is macroscopically, for example, a part is curved to the opposite side. Also included are shapes and shapes that contain linear parts. In the present embodiment, the central portion in the longitudinal direction of the inner edge 43a of the separation portion 43 is linear.
- the topsheet 2 is formed on the skin contact surface 4a side of the absorbent core 4 and on both sides in the width direction of the absorbent core 4.
- the entire region of the edges 4b and 4b and the vicinity of both sides of the non-skin contact surface 4c side of the absorbent core 4 in the diaper width direction are covered.
- both side end portions 21 and 21 of the surface sheet 2 further cover a part of the central absorbent body 41 on the non-skin contact surface side.
- the absorbent main body 5 is a liquid impermeable material that covers the entire area of the absorbent core 4 on the non-skin contact surface 4c side. It has a permeable back sheet 3.
- the back sheet 3 is sandwiched and fixed between the absorbent core 4 and the top sheet 2 that covers the vicinity of both side portions of the absorbent core 4 on the non-skin contact surface 4c side in the diaper width direction.
- all areas is a concept including “almost all areas”. Specifically, if the non-skin contact surface 4c side of the absorbent core 4 is covered with the back sheet 3 at least 90% in the width direction and 90% or more in the longitudinal direction (length direction), It is assumed that the “entire area” of the absorbent core 4 on the non-skin contact surface 4c side is covered. If the width and / or length of the back sheet 3 is larger than the width of the absorbent core 4 (W2 in FIG. 15 (a)) and Z or the length, the width of the back sheet 3 is Similarly, the length of the back sheet 3 is preferably 110% or more of the length of the absorbent core 4 in the same manner as it is preferably 110% or less of the width of 4.
- the width and length of the absorbent core 4 are the width of the entire absorbent core 4 including the covering sheet and the length, respectively. Say length.
- the front surface sheet 2 is bonded and fixed to the back surface sheet 3 and the leakage prevention cuff forming sheet 60 at both side end portions 21 and 21 by a bonding means such as heat sealing. 67, 67 are also formed.
- the main body joint fixing portion 67 has an innermost portion in the width direction of the side absorber 42. It is located inward in the diaper width direction from the side point P (the part located most inward in the width direction in the side absorber 42).
- An elastic member 9 for starting up the side part (side absorbent body 42) of the absorbent main body 5 is disposed in an extended state outward of the main body joining and fixing part 67 in the diaper width direction.
- the “position of the main body bonding / fixing portion 67” means the position of the outer end in the width direction of the main body bonding / fixing portion 67.
- the main body bonding / fixing portion 67 uses a known bonding means such as a heat seal, a high frequency seal, an ultrasonic seal, a hot-melt adhesive, or the like to connect the leakage prevention cuff forming sheet 60 and the side edge of the top sheet 2 . It is formed by joining the part 21 and the back sheet 3.
- the main body bonding / fixing portion 67 is formed in a continuous linear shape, but the shape of the main body bonding / fixing portion 67 is not limited to this, and has intermittent portions in some places. It may be a discontinuous straight line or a continuous or discontinuous curved line.
- the surface sheet 2 covering the skin contact surface 4a side of the absorbent core 4 and the back sheet 3 covering the non-skin contact surface side 4c side of the absorbent core 4 are as shown in FIG.
- the front and back surface joining portions 22 are joined through the separating portions 43 of the absorbent core 4.
- the cover sheet (not shown) exists in the separation part 43, the top sheet 2 and the back sheet 3 are joined through the cover sheet.
- a leak-proof cuff forming sheet 60 and an absorbent main body 5 are sequentially joined.
- the exterior body 10 and the leak-proof cuff forming sheet 60 are joined by a joint fixing portion (hereinafter also referred to as “exterior body joint fixing portion”) 13.
- the exterior body joint fixing part 13 is arranged at a position on the outer side in the diaper width direction than the main body joint fixing part 67.
- the distance L5 (see FIG. 5) between the width direction outer end of the exterior body joint fixing portion 13 and the width direction outer end of the main body joint fixing portion 67 is preferably Omn! -50 mm, more preferably 10 mm-40 mm.
- joining means such as a hot-melt adhesive can be used.
- the exterior body 10 is composed of two exterior body forming sheets 11, 12 and elastic members at respective portions fixed between the two sheets. Become. Between the two outer body forming sheets 11 and 12, a waist part 71 which forms a waist gather at the peripheral part of the waist opening 7, and a redder part which forms a red gather at the peripheral part of the redder opening 8 Elastic member 81 and waistline D (20 mm downward from the peripheral edge of waist opening 7
- the waistline elastic members 91a and 92a forming the waistline gears in a state of being divided into right and left parts (regions from the position to the upper end of the redder opening 8) are stretched and joined by a joining means such as a hot-melt adhesive. Bonded and fixed.
- Each of the exterior body forming sheets 11 and 12 is also configured to have a breathable nonwoven fabric.
- the sheet (outer layer nonwoven fabric) 11 positioned on the non-skin contact surface side is the longitudinal edge (longitudinal) of the sheet (inner layer nonwoven fabric) 12 positioned on the skin contact surface side in the longitudinal direction. It has extended portions that extend from both end edges in the direction.
- Each of these extending portions is arranged so that the absorbent main body 5 is covered so as to cover the front and rear ends (both ends in the longitudinal direction) of the absorbent main body 5 after the absorbent main body 5 is arranged on the sheet 12 of the outer package 10. It is folded and glued to the side.
- the leak-proof cuff 6 is formed to extend in the longitudinal direction of the diaper on both sides in the longitudinal direction of the absorbent main body 5, so that the leak-proof cuff is formed.
- one strip-shaped water-repellent sheet having a predetermined width is folded in two along a fold line along its longitudinal direction, and facing each other.
- a two-layered sheet in which the layers to be bonded are joined with a hot-melt adhesive or partial heat seal or ultrasonic seal.
- a plurality of leak-proof cuff forming elastic members 61 and a single leak-proof cuff pulling elastic member 62 are fixed in an expanded state between the two-layer sheet.
- the sheet 60 for forming a leak-proof cuff is more specifically provided at each of both end portions in the longitudinal direction of the absorbent main body 5 in each of the abdominal side portion A and the back side portion B.
- the absorbent main body 5 is covered from the skin contact surface side to the non-skin contact surface side.
- the sheet 60 for forming a leak-proof cuff is provided with heat seal, high frequency seal, ultrasonic seal, hot melt adhesive, etc. on the skin contact surface side of the absorbent main body 5 at each end in the longitudinal direction of the absorbent main body 5. Joined by known joining means! Speak.
- the leak-proof cuff 6 can stand at least in the crotch part C.
- a plurality of leak-proof cuff-forming elastic members 61 are arranged in the width direction of the absorbent main body 5.
- Leakage resistance The sheet 60 for sheet forming is fixed over the entire longitudinal direction.
- the leak-proof cuff pulling elastic member 62 is formed between the leak-proof cuff forming elastic member 61 and the body joint fixing portion 67 in the leak-proof cuff 6 and the leak-proof cuff forming sheet 60 (leak-proof cuff). 6) It is arranged over the entire longitudinal direction. Further, the leakage preventing cuff pulling elastic member 62 is provided at a position on the outer side in the diaper width direction of the leakage preventing cuff 6 than the elastic member 9 for raising the side absorbent body when the diaper 1 is deployed.
- the main body joint fixing portion 67, the elastic member 62 for pulling out the leak-proof cuff, and the side absorber rising in the expanded state of the diaper 1 The positional relationship between the elastic member 9 for use and the elastic member 61 for forming the leak-proof cuff is preferably set as follows.
- the distance L2 (see FIG. 4) between the outer end in the width direction of the body joint fixing portion 67 and the elastic member 62 (center of) for pulling the leak-proof cuff is preferably 30 mm to 70 mm, more preferably 35 mm to 60mm.
- the elastic member 62 disposed closest to the main body joint fixing portion 67 is used as a reference.
- the distance L4 (see Fig. 4) between the leakage preventing cuff pulling elastic member 62 and the leakage preventing cuff forming elastic member 61 is preferably 20 mm to 50 mm, more preferably 20 mm to 40 mm. .
- the elastic member 62 arranged closest to the main body joint fixing portion 67 is used as a reference, as in the second embodiment.
- the elastic member 61 arranged on the outermost side is used as a reference.
- the number of elastic members 62 for pulling the leak-proof cuff is small, and one or two are preferred.
- the form of the elastic member 61 for forming the leak-proof cuff and the elastic member 62 for pulling the leak-proof cuff include a thread-like one (thread rubber, etc.), a belt-like one with a predetermined width (flat rubber, etc.), etc. Particularly preferred are thread-like ones.
- Examples of the material of the elastic members 61 and 62 include natural rubber, synthetic rubber such as styrene-butadiene, butadiene, isoprene and neoprene, EVA, stretchable polyolefin, urethane and the like.
- the elastic members 9, 71, 81, 91a, 92a may be in the form of a thread, a band having a predetermined width, or a thin film. As those materials, those described as the materials of the elastic members 61 and 62 can be used.
- the leak-proof cuff 6 is provided with the leak-proof cuff pulling elastic member 62 separately from the leak-proof cuff forming elastic member 61.
- the leak-proof cuff 6 weakens the pulling force of the side absorber 42 toward the wearer's undercarriage side, and the position of the standing end (end in the width direction) of the side absorber 42 is stable. do not do.
- the central absorbent body 41 that weakens the pulling force of the central absorbent body 41 is compressed inward in the width direction, and the shape of the central absorbent body 41 is not stable. Therefore, it is difficult to ensure fit and leakproof performance at the crotch.
- the leak-proof cuff 6 is provided with the elastic member 62 for gathering the leak-proof force and the bow I.
- the area between the free end of the leak-proof cuff forming elastic member 61 and the exterior body joint fixing part 13 in the leak-proof cuff 6 is pulled toward the wearer's undercarriage due to the contraction force of the inertia member 62. It is done. Therefore, particularly the standing end side of the side absorbent body 42 is pulled to the wearer's suspension side through the surface sheet 2 joined to the leakage prevention cuff forming sheet 60, and it becomes easy to follow the suspension.
- the central absorbent body 41 is also pulled outward in the width direction, and the shape of the central absorbent body 41 is stabilized. As a result, the clean feeling of the crotch is improved and the leak-proof performance is also improved.
- FIG. 11 is a longitudinal sectional view of the first embodiment, but since the longitudinal sectional shape of the second embodiment is the same as the longitudinal sectional shape of the first embodiment, the second embodiment will be described with reference to FIG. Embodiment profile The surface shape will also be described.
- the outer body joint fixing part 13 is arranged at a position on the outer side in the diaper width direction with respect to the main body joint fixing part 67. Therefore, when the exterior body 10 is pulled outward in the width direction by the contraction force of the elastic member 81 disposed in the redder opening 8, the exterior body joint fixing portion 13, the leak-proof cuff forming sheet 60, and the main body joint fixing
- the absorbent core 4 (side absorber 42, central absorber 41) is also efficiently pulled outward in the width direction via the portion 67. As a result, the leak-proof performance is further improved if the crotch part feels clean.
- the leak-proof cuff 6 is provided with the elastic member 62 for pulling the leak-proof cuff, the elastic member 62 contracts and the leak-proof cuff 6 protrudes from the redder opening 8 when worn. "Become.
- the surface sheet 2 that covers the skin contact surface 4a side of the absorbent core 4 and the back sheet 3 that covers the non-skin contact surface side 4c side of the absorbent core 4 are also included in the absorbent core 4. Since the front and rear surface joining portions 22 are joined through the separation portion 43 of 4, even if the side absorbent body 42 stands up, the central absorbent body 41 is unlikely to slide down from the top sheet 2.
- one side in the longitudinal direction and the other side in the longitudinal direction of the side absorbent body 42 in the absorbent core 4 respectively correspond to one longitudinal part (ventral side part) F and the other longitudinal part (back side) of the central absorbent body 41. Part) Since it is connected continuously with R, the effect of preventing leakage of urine and loose stool is particularly high when the wearer is sitting. That is, in the state where the wearer is sitting, as shown in FIG. 17, the standing side absorbent body 42 moves so as to cover the central absorbent body 41 and pushes the central absorbent body 41 forward and backward.
- the absorbent core 4 having the above-mentioned characteristic form since the absorbent core 4 having the above-mentioned characteristic form is used, the crotch does not bump when worn, the appearance of the diaper is clean, and the fit and prevention at the crotch Excellent leakage performance.
- the separation portion 43 exists between the central absorbent body 41 and the side absorbent body 42, the basis weight of the pulp and polymer of the side absorbent body 42 is large! Standing can be achieved.
- the absorbent core 4 has a central absorbent body 41 and side absorbent bodies 42 and 42 connected to each other, so that the absorbent core 4 can be used when the diaper 1 is manufactured.
- the diaper 1 having excellent characteristics can be manufactured efficiently and stably because it is easy to handle and the separating part 43 can be stably placed with high accuracy at a predetermined place in the diaper 1. it can.
- the absorbent core 4 is placed inward in the width direction by the wearer's groin when worn.
- the side absorbent body 42 rises along the outer edge portion of the central absorbent body 41 in the crotch C, the inner edge portion 43a is likely to follow the wearer's legs. For this reason, the wearer does not feel uncomfortable when wearing it and has excellent performance in preventing leakage.
- the central absorbent body 41 is disposed such that one longitudinal part F thereof is positioned on the ventral side part A, and the absorbent core 4 is formed of an upper absorbent body 411 and a lower absorbent body 412. Since the absorption capacity of the absorbent core 4 is unevenly distributed on the front (abdominal) side, it is particularly excellent in preventing leakage from the front side. Therefore, for example, in the use of diapers for infants, it is possible to prevent leakage of the front force even when a prone infant is used.
- the main body joint fixing portion 67 is located inwardly in the diaper width direction from the innermost point P of the side absorbent body 42, and is located outward from the main body joint fixing portion 67 in the diaper width direction. Since the elastic member 9 for starting up (the side absorbent body 42) is arranged, both side portions 52, 52 and the leak-proof cuffs 6, 6 of the absorbent main body 5 are connected to the crotch portion C as shown in FIG. As a result, the diaper leak-proof performance is improved.
- a concave pocket is formed in the crotch part C by the absorbent main body 5 having standing parts on the front, rear, left and right, and it is difficult to cause excretion of the internal force of the pocket immediately. Even when urine is excreted in a short period of time, or when it is excreted, such as watery stools or soft stools that are difficult to absorb, excrement is difficult to leak out of the pocket.
- the leak-proof cuff 6 exists on both sides of the absorbent main body 5, and the side portion 52 on which the absorbent main body 5 rises and the leak-proof cuff A pocket Q (see Fig. 5) with excellent retention of excrement is formed between the forming sheet 60 and the excrement is prevented from leaking beyond the side edge of the exterior body 10. be able to.
- the leak-proof cuff 6 is in surface contact with the wearer's skin and the upright side 52 of the absorbent main body 5 is in direct contact with the wearer's skin. It has become.
- FIG. 18 is a view corresponding to FIG. 5 for the third embodiment of the present invention.
- the application pattern of a hot-melt adhesive or the like as a bonding means between the back sheet 3 and the leak-proof cuff forming sheet 60 is different except that the back sheet 3 is disposed.
- the liquid-impermeable back sheet 3 is bonded to the skin contact surface side of the exterior body 10, and the leak-proof cuff forming sheet 60 and the back surface sheet 3 have a skin contact surface side.
- Absorbent body 5 is joined sequentially.
- the back sheet 3 has a vertically long rectangular shape with substantially the same dimensions as the absorbent main body 5, and the longitudinal direction of the back sheet 3 coincides with the longitudinal direction of the diaper at the same position as the absorbent main body 5. It is arranged.
- the back sheet 3 is bonded and fixed to the non-skin contact surface side of the leakproof cuff forming sheet 60 so as to cover the entire region of the absorbent main body 5 on the non-skin contact surface side.
- all areas is a concept including “almost all areas”. Specifically, if the non-skin contact surface side of the absorbent main body 5 is covered with the back sheet 3 at least 90% in the width direction and 90% or more in the longitudinal direction (length direction), It is assumed that the “entire area” on the non-skin contact surface side of the absorbent main body 5 is covered. If the width and / or length of the back sheet 3 is larger than the width and Z or length of the absorbent main body 5, the width of the back sheet 3 is 110% or less of the width of the absorbent main body 5. Similarly, the length of the back sheet 3 is preferably 110% or more of the length of the absorbent main body 5.
- the width and length of the absorbent main body 5 are the width and length of the entire absorbent main body 5 including the covering sheet, respectively. Say length.
- the exterior body joint fixing portion 13 between the exterior body 10 and the back sheet 3 is provided with a leakproof cuff forming sheet 60 and It is arranged at a position on the outer side in the diaper width direction relative to the main body joint fixing portion 67 with the absorbent main body 5.
- the back surface sheet 3 and the leak-proof cuff forming sheet 60 are bonded and fixed by the back surface sheet bonding portion 14 having a width larger than the width direction of the exterior body bonding fixing portion 13.
- the liquid impermeability (leakage prevention) of the leak-proof cuff 6 is improved.
- the back sheet 3 wider than the absorbent main body 5 can be provided, and in this case, the back sheet joining portion 14 wider than the absorbent main body 5 can be provided.
- the topsheet 2 is composed of the entire area on the skin contact surface 4a side of the absorbent core 4 and both side edges in the width direction of the absorbent core 4. Covers the entire area of 4b and the absorbent core 4 non-skin contact surface 4c side both sides in the width direction, and is bonded and fixed to the leakproof cuff forming sheet 60 at both end portions 21 and 21 of the surface sheet 2 .
- the non-skin contact surface side of the side absorbent body 42 is covered with the liquid-permeable surface sheet 2, so that the non-skin contact surface side of the side absorbent body 42 is It is capable of absorbing powerful liquids and is particularly excellent in leak-proof performance.
- the back sheet 3 is disposed adjacent to the exterior body 10, if the back sheet 3 is printed with various patterns or printed patterns such as the manufacturer's brand mark, the printed pattern can be visually recognized. There is a merit of improved performance.
- FIG. 19, FIG. 20 and FIG. 21 (a) to FIG. 21 (c) are plan views of different forms of absorbent cores.
- the absorbent core 4 shown in FIG. It is not connected to the body 41, and both ends in the longitudinal direction of the separation part 43 are open. Other than that, it is configured in the same manner as the absorbent core 4 in the second embodiment.
- the side absorbent body 42 is connected at one side in the longitudinal direction of the central absorbent body 41, but is not connected at the other side in the longitudinal direction.
- the other end is open.
- the configuration is the same as that of the absorbent core 4 in the second embodiment.
- the disposable diaper of the second invention of the present invention can also be configured by adopting the absorbent core 4 shown in FIG. 19 or the absorbent core 4 shown in FIG. 20 as the absorbent core.
- the absorbent core 4 shown in FIGS. 21 (a) to 21 (c) has a central absorbent body 41 and a lower absorbent body 4 12 (a pair of side absorbent bodies 42 are provided in a body-like manner. The central absorber). Other than that, the configuration is the same as the absorbent core 4 in the second embodiment.
- FIG. 22 is a diagram corresponding to FIG. 5 for the fourth embodiment of the second invention of the present invention
- FIG. 23 is a diagram corresponding to FIG. 5 for the fifth embodiment of the second invention of the present invention.
- the fourth embodiment is configured similarly to the second embodiment described above except that the absorbent core 4 shown in FIGS. 21 (a) to 21 (c) is used.
- the fifth embodiment is configured in the same manner as the third embodiment described above except that the absorbent core 4 shown in FIGS. 21 (a) to 21 (c) is used.
- the elastic member 9 for starting up the side absorbent body is arranged over the entire longitudinal direction of the absorbent core 4, and an elastic member 61 for forming a leak-proof cuff.
- the elastic member 62 for pulling the leak-proof cuff is a force that is distributed over the entire length of the leak-proof cuff forming sheet 60.
- the central absorbent body 41 is formed of an upper absorbent body 411 and a lower absorbent body 412 that are independent members, and the upper absorbent body 411 and the lower absorbent body 412 are separable.
- the central absorbent body according to the present invention may be formed by integrating the upper absorbent body and the lower absorbent body (inseparable).
- the shape of the central absorbent body is such that the upper absorbent body 411 and the lower absorbent body 412 are overlapped as described above without deforming each of the upper absorbent body 411 and the lower absorbent body 412.
- the size of is preferably as described above.
- the basis weight of the central absorbent body the total value of the basis weight of the upper absorbent body 411 and the basis weight of the lower absorbent body 412 described above is preferable.
- the absorbent core 4 has one longitudinal direction of the central absorbent body 41.
- the longitudinal direction other part R of the central absorbent body is arranged so as to be located in the ventral part, and the force is arranged so that the part F is located in the ventral part A.
- the elastic member 9 for starting up the side absorbent body is arranged on both sides of the absorbent core 4.
- the position of the elastic member 9 is the absorption position.
- the elastic member 9 is not particularly limited as long as the side absorbent body 42 can be raised on both sides of the absorbent core 4, and the elastic member 9 is, for example, the absorbent core 4 and the surface sheet 2 located on the skin contact surface side. Or inside the covering sheet (not shown) that covers the entire absorbent core 4.
- the elastic member 9 is formed on both side edges of the absorbent core 4 or U, prefer to be placed in the vicinity.
- the diaper of the second embodiment is a pants-type disposable diaper, but the disposable diaper of the present invention is a so-called unfolded type disposable disposable diaper provided with a fastened diaper-fastening tape. Even a diaper.
- a leak-proof cuff 6 is formed on both sides of the absorbent main body 5, and the leak-proof cuff forming sheet 60 joined to the leak-proof cuff 6 force absorbent main body 5 and the leak-proof cuff.
- At least the redder opening on the non-skin contact surface side of the absorbent main body 5 8 is a longitudinal section in which a liquid-impermeable back sheet 3, a leak-proof cuff forming sheet 60, and an absorbent main body 5 are sequentially joined to the skin contact surface side of the exterior body 10.
- a surface shape can be adopted (not shown).
- the back sheet 3 and the leak-proof cuff forming sheet 60 are a back surface having a width larger than the width direction of the joint fixing portion 13 between the exterior body 10 and the back sheet 3.
- the longitudinal cross-sectional shape joined by the sheet joining part 14 or the joining and fixing part 13 between the outer package 10 and the back sheet 3 is a diaper than the joining and fixing part 67 between the leakage preventing cuff forming sheet 60 and the absorbent main body 5.
- a vertical cross-sectional shape arranged at an outer position in the width direction can be adopted (none is shown).
- the vertical cross-sectional shape of the third embodiment or the fifth embodiment of the second invention is adopted in the first embodiment described above. .
- the disposable diaper of the first invention of the present invention is unlikely to slip off due to the movement of the wearer during wearing of the diaper.
- the diaper's crotch hangs down due to absorption of urine, etc., making it difficult for bumps to occur. Therefore, the appearance of the wearing diaper can be kept good, and the crotch part does not swell excessively, so that the wearer's movement is not hindered.
- the elastic member disposed in the diaper is prevented from excessively tightening the wearer's body, and the feeling of wear is improved. Furthermore, by suppressing the diaper slipping, the occurrence of leakage of urine and feces during wearing is suppressed.
- the disposable diaper of the second invention of the present invention is provided with an elastic member for pulling the leak-proof cuff apart from the elastic member for forming the leak-proof cuff, particularly on the leak-proof cuff provided on both sides. Therefore, the crotch does not bump when worn, and the appearance of the diaper is neat. Therefore, it has excellent fit at the crotch and leak-proof performance, and the leak-proof cuff hardly protrudes from the redder opening.
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06745426.4A EP1880700B1 (en) | 2005-05-09 | 2006-04-18 | Disposable diaper |
CN2006800158771A CN101170978B (zh) | 2005-05-09 | 2006-04-18 | 一次性尿布 |
US11/920,051 US7972316B2 (en) | 2005-05-09 | 2006-04-18 | Disposable diaper |
KR1020077027112A KR101255592B1 (ko) | 2005-05-09 | 2006-04-18 | 일회용 기저귀 |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005135625 | 2005-05-09 | ||
JP2005-135625 | 2005-05-09 | ||
JP2005218450A JP4662463B2 (ja) | 2005-05-09 | 2005-07-28 | 使い捨ておむつ |
JP2005218146A JP3857292B1 (ja) | 2005-07-28 | 2005-07-28 | パンツ型使い捨ておむつ |
JP2005-218450 | 2005-07-28 | ||
JP2005-218146 | 2005-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006120847A1 true WO2006120847A1 (ja) | 2006-11-16 |
Family
ID=37396360
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/308144 WO2006120847A1 (ja) | 2005-05-09 | 2006-04-18 | 使い捨ておむつ |
Country Status (6)
Country | Link |
---|---|
US (1) | US7972316B2 (ja) |
EP (1) | EP1880700B1 (ja) |
KR (1) | KR101255592B1 (ja) |
CN (2) | CN101170978B (ja) |
TW (1) | TW200701961A (ja) |
WO (1) | WO2006120847A1 (ja) |
Cited By (4)
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US20110066127A1 (en) * | 2008-03-31 | 2011-03-17 | Seiichi Kuwano | Disposable absorbent wearing article |
WO2014136577A1 (ja) * | 2013-03-08 | 2014-09-12 | ユニ・チャーム株式会社 | パンツ型の使い捨て着用物品 |
JP2018504230A (ja) * | 2015-02-17 | 2018-02-15 | ザ プロクター アンド ギャンブル カンパニー | 三次元鉢部を形成する吸収性物品 |
JP2018507034A (ja) * | 2015-02-17 | 2018-03-15 | ザ プロクター アンド ギャンブル カンパニー | 三次元鉢部を形成する吸収性物品向けのパッケージ |
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JP6890173B1 (ja) * | 2019-12-20 | 2021-06-18 | ユニ・チャーム株式会社 | 吸収性物品 |
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2006
- 2006-04-18 KR KR1020077027112A patent/KR101255592B1/ko not_active Expired - Fee Related
- 2006-04-18 CN CN2006800158771A patent/CN101170978B/zh active Active
- 2006-04-18 US US11/920,051 patent/US7972316B2/en not_active Expired - Fee Related
- 2006-04-18 WO PCT/JP2006/308144 patent/WO2006120847A1/ja active Application Filing
- 2006-04-18 CN CN2010105026531A patent/CN101947164A/zh active Pending
- 2006-04-18 EP EP06745426.4A patent/EP1880700B1/en not_active Not-in-force
- 2006-05-03 TW TW095115767A patent/TW200701961A/zh not_active IP Right Cessation
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110066127A1 (en) * | 2008-03-31 | 2011-03-17 | Seiichi Kuwano | Disposable absorbent wearing article |
US8777918B2 (en) * | 2008-03-31 | 2014-07-15 | Unicharm Corporation | Disposable absorbent wearing article |
WO2014136577A1 (ja) * | 2013-03-08 | 2014-09-12 | ユニ・チャーム株式会社 | パンツ型の使い捨て着用物品 |
JP2014171691A (ja) * | 2013-03-08 | 2014-09-22 | Uni Charm Corp | パンツ型の使い捨て着用物品 |
US10016317B2 (en) | 2013-03-08 | 2018-07-10 | Unicharm Corporation | Pull-on disposable wearing article |
JP2018504230A (ja) * | 2015-02-17 | 2018-02-15 | ザ プロクター アンド ギャンブル カンパニー | 三次元鉢部を形成する吸収性物品 |
JP2018507034A (ja) * | 2015-02-17 | 2018-03-15 | ザ プロクター アンド ギャンブル カンパニー | 三次元鉢部を形成する吸収性物品向けのパッケージ |
Also Published As
Publication number | Publication date |
---|---|
US7972316B2 (en) | 2011-07-05 |
TW200701961A (en) | 2007-01-16 |
KR20080007475A (ko) | 2008-01-21 |
EP1880700A1 (en) | 2008-01-23 |
EP1880700B1 (en) | 2017-03-01 |
CN101170978A (zh) | 2008-04-30 |
KR101255592B1 (ko) | 2013-04-16 |
CN101947164A (zh) | 2011-01-19 |
US20090088718A1 (en) | 2009-04-02 |
EP1880700A4 (en) | 2011-08-31 |
CN101170978B (zh) | 2012-07-04 |
TWI377051B (ja) | 2012-11-21 |
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