JP2014198135A - Disposable wear article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable wear article that has a storage space capable of storing a relatively large amount of excrement and has barrier cuffs capable of surely preventing a lateral leak of the excrement.SOLUTION: A disposable wear article 10 includes: a waist panel 16; a crotch panel 17 to define part of front and rear waist regions 11 and 12 and a crotch region 13; and a liquid-absorbing structure 15 disposed in at least the crotch region 13. The crotch panel 17 includes an elastic inner barrier cuff 60 and an elastic outer barrier cuff 61 that are respectively located on both sides in a transverse direction X. The outer barrier cuff 61 is secured outwardly in the transverse direction X to an outer surface of the waist panel 16. The inner barrier cuff 60 is secured inwardly in the transverse direction X to the outer surface of the waist panel 16.

Description

  The present invention relates to a disposable wearing article, and more particularly, a disposable diaper, a disposable toilet training pant, a disposable incontinence pant, and a disposable sanitary pant provided with a barrier cuff for preventing side leakage of excrement in the crotch region. It relates to disposable wearing articles such as.

  Conventionally, disposable wearing articles provided with a barrier cuff for preventing lateral leakage of excrement in the crotch region are known. For example, Patent Document 1 includes a waist panel that defines a front and rear waist region, a crotch panel that defines a crotch region, and a liquid absorption structure that is disposed on an inner surface of the crotch panel. Disposable wearing articles in which a barrier cuff standing by a leg elastic body is disposed are disclosed.

Japanese Patent No. 4240463 (JP 4240463 B2)

  According to the disposable wearing article disclosed in Patent Document 1, in the wearing state, the burr cuff stands up toward the wearer's body, and the crotch panel attached to the waist panel is suspended and suspended, Inside the crotch panel, a relatively large volume of waste storage space is formed.

  However, in this state where the crotch panel is suspended from the waist panel, the liquid absorbing structure located at the center of the crotch panel is separated from the wearer's body and between the leg opening edge and the body. There is a risk that excrement may leak sideways due to a gap.

  Then, the subject of this invention is related with provision of the disposable wear article provided with the barrier cuff which has the storage space which can hold | maintain a comparatively large amount of excrement, and can prevent side leakage of excrement reliably.

  In order to solve the above problems, the present invention has a longitudinal direction and a transverse direction perpendicular thereto, a front waist region, a rear waist region, a crotch region located between the front and rear waist regions, and the front and rear waist regions. A disposable wear comprising: a waist panel that demarcates, a crotch panel that delimits a part of the front and rear waist regions and the crotch region, and a liquid-absorbing structure disposed at least in the crotch region, attached to the waist panel It relates to goods.

In the disposable wearing article according to the present invention, the crotch panel has an elastic inner barrier cuff and an elastic outer barrier cuff located on both sides in the lateral direction, and the outer barrier cuff is arranged on the outer surface of the waist panel in the lateral direction. The inner barrier cuff is fixed to the outer surface of the waist panel inward in the lateral direction.

  According to one or more embodiments of the disposable wearing article according to the present invention, the crotch panel is attached to the outer side of the waist panel, the internal space has a bag shape, and a larger amount of excrement can be absorbed and retained. it can. Also, on both sides of the crotch area, a barrier cuff having an inner barrier cuff that is inverted and fixed and an outer barrier cuff that is fixed to the outside is disposed, and the crotch panel is lifted by the outer barrier cuff, Since the barrier cuff extends inward and the entire barrier cuff abuts against the wearer's thigh in a flat shape, it is possible to effectively prevent the side leakage of excrement.

The perspective view of the disposable diaper shown as an example of the disposable wearing article in 1st Embodiment of this invention. The partially broken expansion | deployment top view which looked at the state which peeled the side seam of the diaper and extended in the front-back direction from the inner surface. The exploded perspective view of a diaper. FIG. FIG. The typical sectional view of the crotch area in a wearing state. The figure which shows the state which looked at the inside of a diaper from the arrow VII in FIG. Sectional drawing which follows the VIII-VIII line of FIG. The partially broken expansion | deployment top view similar to FIG. 2 of the diaper in 2nd Embodiment. The figure which shows the state which looked at the inside of the diaper similar to FIG. 7 in 2nd Embodiment. FIG. 7 is a schematic cross-sectional view similar to FIG. 6 in the second embodiment. The partially broken expansion | deployment top view similar to FIG. 2 of the diaper in 3rd Embodiment.

<First Embodiment>
With reference to FIGS. 1 to 3, a disposable diaper 10 shown as an example of the wearing article of the present invention includes a longitudinal direction Y, a transverse direction X orthogonal thereto, and a virtual longitudinal center line that bisects the width dimension of the transverse direction X. PP and a virtual horizontal center line QQ that bisects the width dimension in the vertical direction Y. The diaper 10 is symmetric with respect to the vertical virtual center line PP.

  The diaper 10 has a front waist region 11, a rear waist region 12, a chassis 14 having a crotch region 13 positioned between the front and rear waist regions 11, 12, and a liquid absorption connected to at least a skin facing surface of the crotch region 13. Structure 15. The chassis 14 includes a skin facing surface and a non-skin facing surface facing the skin, an annular and elastic waist panel 16 extending in the direction around the waist, and a crotch panel 17 connected to the non-skin facing surface of the waist panel 16. The waist panel 16 includes a front waist panel 18 that forms the front waist region 11 and a rear waist panel 19 that forms the rear waist region 12.

  The front waist panel 18 intersects with the crotch panel 17 and extends in the lateral direction X. The outer end edge 18b extends in the lateral direction X while being spaced apart from the inner end edge 18a in the longitudinal direction Y. A laterally long rectangular shape is formed by both side edges 18c and 18d extending in the longitudinal direction Y between the edges 18a and 18b.

  The rear waist panel 19 is substantially the same shape and size as the front waist panel 18, intersects with the crotch panel 17, and has an inner end edge 19 a that extends in the horizontal direction X and is spaced apart from the inner end edge 19 a in the vertical direction Y. The outer end edge 19b extending in the horizontal direction X and the side edges 19c, 19d extending in the vertical direction Y between the inner and outer end edges 19a, 19b are formed in a horizontally long rectangular shape.

  Each of the side edges 18c, 18d of the front waist panel 18 and each of the side edges 19c, 19d of the rear waist panel 19 are overlapped with each other and connected by a seam 20 that intermittently extends in the longitudinal direction Y, and the waist opening 21 And a pair of leg openings 22 are defined (see FIG. 1). The seam 20 is applied by a known joining means, for example, various heat welding means such as hot embossing and sonic processing.

<Front and rear waist panels>
The front front waist panels 18 and 19 have inner sheets 24 and 26 positioned on the skin facing surface side, and outer sheet 25 and 27 positioned on the non-skin facing surface side. The inner and outer surface sheets 24, 25, 26, and 27 are substantially liquid-impervious SMS (spunbond / meltblown / spunbond) fiber nonwoven fabric, spunbond fiber nonwoven fabric, plastic sheet having a mass of about 15 to 30 g / m ² . Or it can form from a laminate sheet with at least one of these nonwoven fabrics. The inner surfaces of the inner sheets 24 and 26 and the outer sheets 25 and 27 are joined together by a hot-melt adhesive or the heat welding means.

  Between the inner and outer sheets 24, 25, 26, 27 of the front and rear waist panels 18, 19, a plurality of string-like or strand-like front and rear waist elastic bodies 30, 31 extending in the transverse direction X extend in the transverse direction X, respectively. Arranged below. The front and rear waist panels 18 and 19 are elasticized so that they can contract at least in the lateral direction X by arranging the front and rear waist elastic bodies 30 and 31 under extension in the lateral direction X, respectively. The inner and outer surface sheets 24, 25, 26, 27 are applied to almost the entire circumferential surfaces of the front and rear waist elastic bodies 30, 31 as long as the joined state of both sheets is not likely to peel off during handling or wearing of the diaper 10. May be joined to each other only through the hot melt adhesive.

  The front waist elastic body 30 includes a front upper waist elastic body 30A extending in the lateral direction X along the outer end edge 18b of the front waist panel 18, and a front lower waist elastic body 30B extending in the horizontal direction X along the outer end edge 18b. It consists of. The front lower waist elastic body 30B is more densely arranged on the outer end edge 18b side than the inner end edge 18a side, and an elastic member is arranged between the front upper waist elastic body 30A and the front lower waist elastic body 30B. A non-elastic region 32 is formed.

  The rear waist elastic body 31 includes a rear upper waist elastic body 31A extending in the lateral direction along the outer end edge 19b of the rear waist panel 19, and a rear lower waist elastic body 31B extending in the lateral direction X along the outer end edge 19b. Consists of The rear lower waist elastic body 31B is more densely arranged on the outer end edge 19b side than the inner end edge 19a side, and an elastic member is arranged between the rear upper waist elastic body 31A and the rear lower waist elastic body 31B. A non-elastic region 33 is formed.

<Crotch panel>
The crotch panel 17 is a vertically long, substantially rectangular shape that defines a part of the crotch region 13 and the front and rear waist regions 11, 12. The crotch panel 17 is connected to the non-skin facing surface (outer surface) of the front waist panel 18. The rear end portion 17B connected to the non-skin facing surface of the rear waist panel 19 and the intermediate portion 17C extending in the vertical direction Y between the front and rear end portions 17A and 17B. The crotch panel 17 includes a crotch laminated sheet 34 and a liquid absorbing structure 15 disposed on the skin facing surface (inner surface) of the crotch laminated sheet 34. The liquid absorbing structure 15 includes a liquid absorbing layer 35 and a body side liner 36 that is formed of a liquid permeable sheet and covers at least the skin facing surface side of the liquid absorbing layer 35.

  The crotch panel 17 is connected to the outer surfaces of the front and rear waist panels 18 and 19 via a front joint region 40 and a rear joint region 41 located on the skin facing surfaces of the front end portion 17A and the rear end portion 17B. The front and rear joining regions 40 and 41 are formed from known joining means such as a hot melt adhesive, and are concave shapes that open toward the crotch region 13. The front and rear joining regions 40 and 41 are center portions 40 a and 41 a and both side portions 40 b and 40 b, respectively. 41b, and non-joining regions 43 and 44 to which the hot melt adhesive is not applied are defined between the side portions 40b and 41b. Further, the surface of the liquid absorbing structure 15 that faces the crotch laminated sheet 34 is fixed to the inner surface of the crotch laminated sheet 34 through a joint 48 formed by applying a hot melt adhesive (see FIG. 6). ).

Cover sheets 46 and 47 covering the front and rear end portions 17A and 17B of the crotch panel 17 are attached. The cover sheets 46 and 47 are formed of a fiber nonwoven fabric or a plastic sheet having a mass of about 10 to 30 g / m ² , and the front and rear waist panels 18 and 19 are crossed with the front and rear end portions 17A and 17B of the crotch panel 17. It is fixed to the non-skin facing surface via a hot melt adhesive (not shown). When the wearer or a wear assistant grasps and pulls up the front and rear waist panels 18 and 19 with fingers when the diaper 10 is worn by covering the front and rear end portions 17A and 17B of the crotch panel 17 with the cover sheets 46 and 47. There is no possibility that the fingers are caught on the front and rear end portions 17A and 17B. Further, since the rigidity is increased by attaching the cover sheets 46 and 47, the cover sheets 46 and 47 are positioned to face the non-joining regions 43 and 44 without tearing a part of the sheet member. You can grab the area with your finger and pull it up stably.

<Liquid absorption structure>
The body-side liner 36 constituting the liquid-absorbing structure 15 is a fiber non-woven sheet having a liquid permeability of about 15 to 35 g / m ² , preferably hydrophilized, such as a spunbond fiber non-woven fabric, It can form from various well-known fiber nonwoven fabrics, such as a point bond fiber nonwoven fabric and an air through nonwoven fabric.

The liquid-absorbing layer 35 can be formed from a liquid-absorbent core containing SAP (super-absorbent polymer particles) shaped into the shape of a pad and a liquid diffusion sheet covering the same. For example, the liquid-absorbing layer 35 includes a liquid-absorbent core having a content of about 80 to 100%, fluff wood pulp having a content of 20% or less, and a hydrophilic having a mass of about 10 g / m ² located on the upper surface of the liquid-absorbent core. The non-woven fabric and an SMS fiber nonwoven fabric having a mass of about 11 g / m ² located on the lower surface thereof are superposed on each other and intermittently joined via a hot melt adhesive. Thus, since the liquid absorption layer 35 is formed by mixing only SAP or slightly fluffed wood pulp, it is formed from a conventional mixture containing SAP and fluffed wood pulp having a content of about 20 or more. It can be said that the thickness of the crotch panel 17 is high and the response is high.

<Crotch laminated sheet (base sheet)>
3 and 4, the crotch laminated sheet 34 was formed from a crotch inner surface sheet 50 formed of a substantially liquid-impervious leak-proof film and a liquid-impervious leak-proof film or a fiber nonwoven fabric. And the crotch outer sheet 51. The inner surfaces of the crotch inner and outer sheets 50 and 51 are joined to each other via a hot melt adhesive (not shown), and both side portions thereof are bent inward to have a gasket function of extending in the vertical direction. A pair of side elastic portions 52 are formed.

  The crotch inner and outer sheet 50, 51 forming each side elastic portion 52 has a plurality of string-like or strand-like inner leg elastic bodies 53 extending straight in the longitudinal direction Y along the inner edge of the bent portion. A plurality of string-like or strand-like outer leg elastic bodies 54 extending straight in the longitudinal direction along the outer edge of the bent portion are attached to be shrinkable in a stretched state via a hot melt adhesive.

  Referring to FIG. 5, in the crotch laminated sheet 34, the side elastic portion 52 and the central portion 55 where the liquid absorbing structure 15 is disposed are connected via a joining area where a hot melt adhesive interposed therebetween is applied. Are joined together. Specifically, the crotch laminated sheet 34 has, in its unfolded state, both end edges 34a and 34b extending in a straight line parallel to each other in the lateral direction X and both side edges 34c extending in a straight line parallel to each other in the vertical direction Y. , 34d, and has a central portion 55 and both side portions 56 located on both sides of the central portion 55 in the lateral direction X. A folding line 57 is formed. Further, the both side portions 56 are divided into an outer portion 56A located on the outer side in the lateral direction X of the bent line 57 and an inner portion 56B located on the inner side of the bent line.

  On the inner surface of the crotch laminated sheet 34, both side edges 34 c and 34 d (inner edges 52 a of the side elastic portions 52) of the crotch laminated sheet 34 extend from the side joint regions 58 extending in the longitudinal direction Y along the folding line 57. An end joint area 59 extending inward along the edges 34a and 34b is formed, and the outer side portions 56A of the both side parts 56 are folded back inward along the folding line 57 so that the side joint area 58 and the end joint are joined. The side elastic portions 52 are formed by joining the inner portions 56 </ b> B facing each other via the region 59. The inner leg elastic body 53 is disposed at a position overlapping the side joint area 58.

  Referring to FIGS. 6 and 7, the side elastic portion 52 includes an inner barrier cuff 60 (containment cuff) 60 that is in contact with the wearer's body in a worn state by a contracting action of the inner leg elastic body 53, and an outer leg elastic body. An outer barrier cuff (gasket cuff) 61 standing up toward the wearer's body (indicated by a phantom line in FIG. 6) in the wearing state is formed by the contraction action of 54. The outer barrier cuff 61 stands by the contracting action of the outer leg elastic body 54, and standing portions 67 are positioned outside both side edges of the liquid absorbing structure 15, and the inner barrier cuff 60 is a diaper having a side joint area 58 as a base end. It extends inward. Thus, the side leakage of excreta can be effectively prevented by forming these two barriers as compared with the case where one barrier is formed.

  The side elastic portion 52 is formed by bending the crotch laminated sheet 34 toward the longitudinal axis P, and both end portions of the front and rear waist panels 18 and 19 are formed by both side portions 40b and 41b of the front and rear joining regions 40 and 41. The inner barrier cuff 60 is fixed inward in the lateral direction X, and the outer barrier cuff 61 is fixed outward in the lateral direction X. Therefore, the inner barrier cuff 60 is a so-called inverted solid body. A cuff is formed, and the outer barrier cuff 61 forms a so-called overturned three-dimensional cuff. That is, when the diaper is worn, the side elastic portion 52 includes an inner barrier cuff (inner distal portion) 60 extending inward in the lateral direction X from the standing portion (proximal portion) 67 and an outer side in the lateral direction X from the standing portion 67. And an outer barrier cuff 61 (outer distal portion) 61 extending in the direction. Accordingly, the outer barrier cuff 61 rises toward the outside of the wearer's body and acts to lift the entire crotch panel 17 to the front and rear waist panels 18 and 19, whereas the inner barrier cuff 60 that is turned inward is an outer barrier cuff. Combined with the contracting action of 61, it extends toward the inside of the wearer's body and abuts against the groin.

  Referring to FIG. 8, in the wearing article having the aspect of the present embodiment, the liquid absorbing structure 15 is relatively thin and flexible, so that the central portion of the crotch region 13 is convex downward, The crotch panel 17 has a bag-like form suspended from the waist panel 16. By having such a form, since the waste storage space 62 is defined inside the crotch panel 17, the crotch panel 17 is suspended while being separated from the wearer's buttocks, and a relatively large amount The excrement can be absorbed and held, and the excrement excreted on the crotch panel 17 can prevent the wearer's buttocks from becoming dirty. Further, since the space portions (front and rear pockets) 64 and 65 are formed by defining the non-bonded areas 43 and 44 between the front and rear bonded areas 40 and 41, the accommodation space 62 can be made larger.

  On the other hand, when excrement is excreted in the crotch panel 17, the central part of the crotch panel 17 and the wearer's body are further separated from each other, and the side of the excrement is released from the gap between the wearer's thigh and the side elastic part 52. There is a risk of leakage, but the outer barrier cuff 61 is extended toward the wearer's body by the outer leg elastic body 54 and the inner barrier cuff 60 is extended inward to extend the wearer's body. Can be brought into contact with the groin portion. That is, when the outer barrier cuff 61 rises outward in the lateral direction X, the proximal end of the inner barrier cuff 60 is lifted upward, and the inner barrier cuff 60 stands up and only its apex (inner edge 52a) is the wearer's body. It is suppressed that it contacts. As a result, the entire side elastic portion 52 abuts against the wearer's body in a flat shape, so that the side elastic portion can be more stably compared with the case where only the apex of the side elastic portion 52 abuts against the wearer's body. 52 can be brought into close contact with the body, and side leakage of excreta can be reliably prevented.

  As long as this effect is achieved, the number of inner leg elastic bodies 53, the expansion ratio, the separation dimension (pitch), and the like may be appropriately changed. However, in order to enhance the effect, the inner and outer leg elastic bodies 53 , 54 are preferably formed of the same elastic material, the inner leg elastic body 53 is preferably disposed on the side elastic portion 52 at a higher expansion ratio than the outer leg elastic body 54. In such a case, the shape of the inner barrier cuff 60 when contracted is stabilized, and the side elastic portions 52 are more stably brought into contact with the body in a more planar manner. The inner leg elastic body 53 is in contact with an inner portion located near the base of the wearer's thigh, while the outer leg elastic body 54 has a larger peripheral dimension than the portion with which the inner leg elastic body 53 contacts. When the expansion ratio of the outer leg elastic body 54 is made relatively high, the tightening force by the outer leg elastic body 54 becomes stronger, giving the wearer a feeling of pressure or having a pressure scar on the skin. Or the wearing feeling may be impaired. Therefore, by making the expansion ratio of the outer leg elastic body 54 relatively lower than that of the inner leg elastic body 53, it is possible to prevent the feeling of wear from being lowered. Further, in order to maintain the inner leg elastic body 53 in an inverted state, the outer leg elastic body 54 is preferably separated from the outer leg elastic body 54 by a given dimension. If the inner leg elastic body 53 and the outer leg elastic body 54 are separated from each other by a given dimension, the entire side elastic portion 52 has a planar shape with a substantially T-shaped cross section. It is possible to prevent both the inner leg elastic body 53 and the outer leg elastic body 54 from rising and coming into contact with the wearer's body with a substantially Y-shaped cross section.

Second Embodiment
Referring to FIGS. 9 and 10, an absorbent pad 70 having absorbency separate from the liquid absorbing structure 15 is disposed inside the crotch panel 17. The absorbent pad 70 has a substantially rectangular shape defined by the front and rear end edges 70a and 70b and both side edges 70c and 70d, and the dimension in the lateral direction X is slightly smaller than that of the liquid absorbing structure 15. It is large and its dimension in the longitudinal direction Y is slightly smaller than that of the liquid-absorbing structure 15. The liquid-permeable top sheet 71, the liquid-impervious back sheet 72, and both sheets 71 , 72 and a core material 73 formed by shaping a mixture of superabsorbent polymer particles (SAP) and fluff pulp into a predetermined shape. By disposing the absorbent pad 70 on the liquid absorption structure 15, the liquid absorption performance of the diaper 10 as a whole can be improved and a larger amount of body fluid can be absorbed. That is, since the liquid absorption structure 15 is relatively thin and flexible, the crotch panel 17 has a bag shape in a worn state and can accommodate a larger amount of excrement, but is normally used. The liquid absorption performance is lower than that of a liquid absorbent member or the like in which SAP and fluff pulp are mixed at an approximately equal ratio, and the body fluid due to multiple urinations cannot be absorbed and retained. By disposing the absorbent pad 70 on the liquid absorbing structure 15, it is possible to prevent such a decrease in liquid absorbing performance.

  The absorbent pad 70 extends in the vertical direction Y on the skin facing surface side of the crotch panel 17 and is detachably fixed via fixing means 75a, 75b, and 75c that are spaced apart from each other by a predetermined dimension in the vertical direction Y. . The fixing means 75a, 75b, and 75c are formed from a base sheet having a mechanical fastener hook portion or a pressure sensitive adhesive applied thereto. As long as the absorbent pad 70 is not displaced in the crotch region 13 during wearing, the fixing means 75a, 75b, 75c may be a single one, or without providing the fixing means 75a, 75b, 75c. Alternatively, the liquid absorbing structure 15 may be disposed so as to overlap.

  As described above, when an elderly person wears the diaper 10 and absorbs bodily fluid only with the relatively thin liquid absorbing structure 15 as in the first embodiment, the whole is stiff and bulky. There is nothing. Therefore, clothes such as underwear do not swell greatly, and the entire diaper 10 has a clean appearance, so that the wearer can go out without feeling shy about wearing the diaper 10. On the other hand, by arranging the absorbent pad 70 on the crotch panel 17 at night, it is possible to cope with a plurality of urinations and to sleep with peace of mind. In addition to the improvement of the actual liquid absorption performance, the absorbent pad 70 can be arranged to give the wearer a sense of security against urination, and can go out in peace even in the case of frequent urination. .

  Moreover, in this embodiment, the color which can be visually recognized in the inner surface view of the diaper 10 is attached | subjected to the inner leg elastic body 53. FIG. The color of the inner leg elastic body 53 is a color that can be visually distinguished from other sheet members and elastic members. In addition to chromatic colors such as blue, red, and yellow, achromatic colors such as black and gray other than white are used. including. Although not shown, as long as the effects described later are produced, in addition to the inner leg elastic body 53 itself being colored, in the entire inner barrier cuff 60 or at least the fixed part of the inner leg elastic body 53, You may arrange | position the decoration element which can be visually recognized in the inside view of diapers, such as a color, a pattern, and a figure. By arranging such a decorative element on the inner barrier cuff 60, the wearer can easily grasp the position and shape of the inner barrier cuff 60 when looking into the inside from the waist opening. In addition, when the inner leg elastic body 53 is colored as described above, the crotch inner and outer surface sheets 50 constituting the crotch laminated sheet 34 so that the color can be visually recognized at least in the inner view of the diaper 10. 51 preferably has the required light transmittance.

  Referring to FIG. 10, when the absorbent pad 70 is placed on the skin facing surface of the crotch panel 17, the inner barrier cuff 60 is lifted up, and both side edges 70 c of the absorbent pad 70 are formed below the absorbent pad 70. 70d is positioned and disposed so as to overlap the liquid absorption structure 15. In the present embodiment, as described above, the side elastic portion 52 abuts against the wearer's body in a flat shape to effectively prevent side leakage of excrement, while the inner barrier cuff 60 extends inward. As a result, the dimension in the lateral direction X between the inner edges 52a is reduced, making it difficult to dispose the absorbent pad 70. Referring to FIG. 11, when the absorbent pad 70 is disposed through the waist opening 21 of the diaper 10, the side elastic portion 52 is viewed in a plane, and therefore the inner edge 52 a of the inner barrier cuff 60 is It is difficult to distinguish when it is white like other sheet members. In particular, when an elderly person with relatively low visual acuity performs a wearing operation, the position of the inner edge 52a cannot be grasped, and the absorbent pad 70 is disposed on the inner barrier cuff 60 or the absorbent pad. 70 may be disposed obliquely on the liquid absorbing structure 15. If a diaper is worn in such an inappropriate state, there is a risk of causing excrement leakage.

  In the present embodiment, as described above, the inner leg elastic body 53 extending along the inner edge 52a of the inner barrier cuff 60 is given a color different from the color (white) of other sheet members. The shape and size of the opening located between the inner edges 52a of the inner barrier cuff 60 becomes visually clearer, and even an elderly person with reduced visual acuity picks up the inner barrier cuff and hits it or The absorbent pad 70 can be placed on the liquid absorbing structure 15 as it is without squeezing the barrier cuff 60. Further, when using a relatively large absorbent pad 70, it is preferable to color the elastic body located at the innermost end of the front and rear waist elastic bodies 30 and 31 in the same manner as the inner leg elastic body 53. . In such a case, the shape and size of the entire opening can be clarified more visually, and the absorbent pad can be easily placed inside the crotch panel across the side elastic portion 52 and the non-bonding regions 43 and 44. can do. It is also preferable from the viewpoint of user friendliness that the color of the inner leg elastic body 52 is printed on the packaging package to indicate that the absorbent pad 70 is a mark for disposing the absorbent pad 70 below the inner barrier cuff 60 from the opening.

  Thus, in order to make the inner leg elastic body 53 more visible as a mark for disposing the absorbent pad 70 at an appropriate position, of the crotch inner and outer surface sheets 50 and 51 constituting the crotch laminated sheet 34. The crotch inner surface sheet 50 is preferably made of a white or milky white and leakproof plastic film. This is because the color of the inner leg elastic body 53 can be made more conspicuous by fixing the inner leg elastic body 53 to the white or milky white leak-proof plastic film. In addition, the inner leg elastic body 53 of the present embodiment can be the same as that of the first embodiment, but the separation dimension (pitch) in the lateral direction X between the elastic bodies is about 1 to 10 mm. Preferably there is. This is because the inner leg elastic body 53 functions as a mark having a required thickness (width dimension) as a whole when the elastic bodies are arranged in such spaced dimensions as viewed from the inside of the diaper. In addition, a separation dimension means the dimension to the side edge of one elastic body and the side edge of the other elastic body adjacent to it. Moreover, it is preferable that the inner leg elastic body 53 is fixed at a higher expansion ratio than the outer leg elastic body 54. In such a case, the planar shape of the inner leg elastic body 53 is stable, and the inner barrier cuff 60 can be more easily seen in the inner view of the diaper 10.

  Further, the absorbent pad 70 is fixed to the crotch panel 17 via the fixing means 75a, 75b, and 75c. However, even if the fixing means 75a, 75b, and 75c are not provided, the rising portion 67 of the side elastic portion 52 is provided. Since it stands up toward the wearer's body and abuts against and supports both side edges 70c, 70d of the absorbent pad 70, the absorbent pad 70 is placed in the excrement receiving space 62 and then the absorbent pad 70 is placed. There is no possibility that 70 is displaced and partly bent. In addition, since the inner barrier cuff 60 extends inward, both side edges 70c and 70d of the absorbent pad 70 are positioned below the inner barrier cuff 60 to prevent the absorbent pad 70 from being lifted. The pad 70 is not inclined. Thus, by properly arranging the absorbent pad 70, the body fluid that could not be absorbed by the absorbent pad 70 can be reliably absorbed by the liquid absorbing structure 15 located below the absorbent pad 70, and the absorbent The pad 70 (upper layer) and the liquid absorbing structure 15 (lower layer) serve as two absorption layers, and can hold and absorb a larger amount of body fluid.

<Third Embodiment>
Referring to FIG. 12, in the present embodiment, the liquid absorbing structure 15 includes an absorbent core 80 formed only from superabsorbent polymer particles (also simply referred to as absorbent polymer particles), and a skin facing surface side. The first sheet (upper sheet) 81 formed from a water-permeable fiber nonwoven fabric having a mass of about 8 to 15 g / m ² , preferably about 10 g / m ² , and a mass positioned on the non-skin facing surface side about 8~15g / ^{m 2,} preferably, comprises a second sheet (lower sheet) 82 formed from water-permeable or low permeability of the SMS fibrous nonwoven fabric of 11g / ^{m 2.}

  Further, the liquid absorption structure 15 includes a liquid absorption region 83 that is formed in a substantially rectangular shape with a given dimension in the longitudinal direction Y, in which the absorbent core 80 is disposed, and the absorbent core 80 is substantially disposed. And a non-liquid-absorbing area 84 formed so as to surround the liquid-absorbing area 83. In addition, in this embodiment, although the liquid absorption area | region 83 is divided into eight areas, according to the absorption performance which the liquid absorption structure 15 requires, the area and the number of areas can be changed suitably. In addition, as long as the effects of the present invention described later are exerted, the absorbent core 80 may include not only the superabsorbent polymer particles but also known materials such as fluff pulp and thermoplastic fibers.

In the liquid absorbing region 83, a mass of about 30~300g / ^{m 2} by means of the hot melt adhesive applied to the inner surface of the second sheet 82, preferably, the superabsorbent polymer particles of the mass about 40~280g / ^{m 2} is It is fixed almost uniformly. In the liquid absorption region 83, it is preferable that the first sheet 81 and the second sheet 82 are partially fixed or they are not fixed to each other. In the non-liquid-absorbing region 84, that is, in the separated region between the liquid-absorbing regions 83 and the entire region along the outer peripheral edge of the liquid-absorbing structure 15, the first and second sheets 81 and 82 are joined to each other via a hot melt adhesive. Has been.

  The liquid absorbent structure 15 is formed only from the absorbent core 80 formed only from the superabsorbent polymer particles and the sheet member that encloses the absorbent core 80, and has a sheet shape. Compared with the case where it is formed from a mixture of conductive polymer particles and fluff pulp, it is thin and excellent in the responsiveness to the movement of the crotch panel 17. In addition, the first and second sheets 81 and 82 are stably fixed in the non-liquid-absorbing region 84, thereby having a required peel strength, and the entire inner surfaces of the first and second sheets 81 and 82 are fixed. It can be said that it has high flexibility compared with the case where it is. Furthermore, since the highly water-absorbing polymer particles are uniformly fixed in the liquid absorption region 83, the distribution is not biased regardless of the movement and posture of the wearer.

Further, in the liquid absorption region 83, the highly water-absorbing polymer particles are arranged up to the limit of the allowable amount, and a part of the particles is not fixed via the hot melt adhesive, and is included so as to be movable in the liquid absorption region 83. It may be. In that case, the liquid absorption region 83 has a bag shape, and the upper limit of the total amount of the superabsorbent polymer particles that can be included therein is about 400 g / m ² in mass. In such a case, the non-liquid-absorbing area 84 functions as a seal portion that seals the periphery of the liquid-absorbing area 83 in order to prevent the highly absorbent polymer particles that can move from the liquid-absorbing area 83 from spilling out. Although it can be achieved, in the manufacturing process, a part of the superabsorbent polymer particles is disposed in the non-absorbing region 84 in a range smaller than the required mass per unit area of the superabsorbent polymer particles in the liquid absorbing region 83. Sometimes.

  In the present embodiment, the thickness of the substantially central portion of the crotch panel 17 including the liquid absorbing structure 15 is specifically about 5.0 mm or less. The cantilever bending resistance is about 15 to 140 mm.

<Thickness measurement method>
The thickness of the central part of the crotch panel 17 can be measured using a thickness measuring instrument (manufactured by PEACOCK) (diameter of the measuring element of about 10 to 20 mm).

<Measurement method of cantilever bending resistance>
In accordance with JISL1096 cantilever method, samples (length 50 mm in the horizontal direction X, length 150 mm in the vertical direction Y) are cut from the center of the crotch panel 17 of the diaper 10, and the skin facing surface and non-skin of each sample Measure the opposite surface. The number of measurements (n) is 3.

  The liquid absorption structure 15 is not divided into the liquid absorption area 83 and the non-liquid absorption area 84 as long as it has the required liquid absorption performance and flexibility due to the above thickness dimensions. 83 may be in the form of a sheet formed over the entire area.

  In addition to the materials described in the present specification, various known materials that are usually used in this type of article can be used without limitation for the respective constituent members constituting the diaper 10. In the specification of the invention and the claims, the terms “first” and “second” are used merely to distinguish similar elements, positions, and the like.

The disclosure relating to the present invention described above can be summarized in at least the following matters.
It has a longitudinal direction and a transverse direction perpendicular thereto, a front waist region, a rear waist region, a crotch region located between the front and rear waist regions, a waist panel defining the front and rear waist regions, and attached to the waist panel In the disposable wearing article comprising a part of the front and rear waist regions and the crotch panel defining the crotch region, and a liquid absorbing structure disposed at least in the crotch region, the crotch panel is arranged in the lateral direction. An elastic inner barrier cuff and an elastic outer barrier cuff located on both sides, the outer barrier cuff being fixed outwardly in the lateral direction to an outer surface of the waist panel, and the inner barrier cuff being attached to an outer surface of the waist panel The wearing article fixed inward in the lateral direction.

The present invention disclosed in the above paragraph 0052 can include at least the following embodiments.
(1) The inner barrier cuff is provided with a decorative element that is visible in the inner surface view.
(2) A plurality of string-like or strand-like inner leg elastic bodies are disposed along the inner edge of the inner barrier cuff, and the outer barrier cuff has a plurality of string-like or strand-like outer leg elastics. The body is placed.
(3) The inner leg elastic body is colored.
(4) The crotch panel includes a base sheet and a pair of side elastic portions extending in the vertical direction on both sides in the horizontal direction of the liquid absorbing structure, and the base sheet is positioned at the liquid absorbing structure. A central portion that is positioned on both sides of the central portion in the lateral direction, and the side elastic portions are bent inwardly on the outer side portions of the both side portions of the base sheet to the inner side portions thereof. The inner barrier cuff extends from the bonding area to the inner side in the lateral direction, and the outer barrier cuff extends from the bonding area to the outer side in the lateral direction.
(5) The said base sheet is comprised from the crotch inner surface sheet and the crotch outer surface sheet, and the said crotch inner surface sheet is formed from the leak-proof plastic film which has white or milky white.
(6) The inner leg elastic body is fixed so as to be contractible at an extension magnification higher than that of the outer leg elastic body.
(7) The lateral dimension of the inner leg elastic body is about 1 to 10 mm.
(8) It further has an absorbent pad that is detachably attached to the liquid absorbing structure, and at least one of both side edges of the absorbent pad is located on the outer side in the lateral direction with respect to the inner edge of the side elastic portion. To do.
(9) The liquid-absorbing structure includes an absorbent core including superabsorbent polymer particles, a liquid-permeable first sheet located on the wearer's body side, a liquid-impermeable second sheet, A non-liquid-absorbing region where the first sheet and the second sheet are joined to each other; and a liquid-absorbing region surrounded by the non-liquid-absorbing region and encapsulating the absorbent core.

10 Disposable wearing articles (disposable diapers)
11 Front waist region 12 Rear waist region 13 Crotch region 15 Liquid absorbing structure 16 Waist panel 17 Crotch panel 34 Crotch laminated sheet (base sheet)
50 Crotch inner sheet 51 Crotch outer sheet 52 Side elastic part 52 Inner edge 53 of side elastic part Inner leg elastic body 54 Outer leg elastic body 55 Center part of base sheet 56A Both side parts 56A of base sheet Both side parts 56B Inner part 60 inner barrier cuff 61 outer barrier cuff 70 absorbent pads 70c, 70d both side edges 80 of absorbent pad absorbent core 81 first sheet 82 second sheet 83 liquid absorbing area 84 non liquid absorbing area

Claims (10)

It has a longitudinal direction and a transverse direction perpendicular thereto, a front waist region, a rear waist region, a crotch region located between the front and rear waist regions, a waist panel defining the front and rear waist regions, and attached to the waist panel In a disposable wearing article comprising a crotch panel defining a part of the front and rear waist region and the crotch region, and a liquid absorbing structure disposed at least in the crotch region,
The crotch panel has an elastic inner barrier cuff and an elastic outer barrier cuff located on both sides in the lateral direction;
The said outer barrier cuff is fixed to the outer surface of the waist panel in the lateral direction outward, and the inner barrier cuff is fixed to the outer surface of the waist panel in the lateral direction inward.   The wearing article according to claim 1, wherein the inner barrier cuff is provided with a decorative element visible in an inner view.   A plurality of string-like or strand-like inner leg elastic bodies are arranged along the inner edge of the inner barrier cuff, and a plurality of string-like or strand-like outer leg elastic bodies are arranged on the outer barrier cuff. The wearing article according to claim 1.   The wearing article according to any one of claims 1 to 3, wherein the inner leg elastic body is colored.   The crotch panel includes a base sheet and a pair of side elastic portions extending in the vertical direction on both sides in the horizontal direction of the liquid absorbing structure, and the base sheet is a central portion where the liquid absorbing structure is located. And both side portions located on the outer side in the lateral direction of the central portion, and the side elastic portion bends the outer portion of the both side portions of the base sheet inward to form a joint region on the inner portion thereof. The inner barrier cuff extends from the joining area to the inside in the lateral direction, and the outer barrier cuff extends from the joining area to the outside in the lateral direction. The wearing article in any one of 4.   The said base sheet is comprised from the crotch inner surface sheet and the crotch outer surface sheet, The said crotch inner surface sheet is a wearing article of Claim 5 formed from the leak-proof plastic film which has white or milky white.   The wearing article according to any one of claims 3 to 6, wherein the inner leg elastic body is fixed so as to be contractible at an expansion ratio higher than an expansion ratio of the outer leg elastic body.   The wearing article according to any one of claims 3 to 7, wherein the lateral spacing of the inner leg elastic body is about 1 to 10 mm.   It further has an absorptive pad attached to the liquid absorption structure so that attachment or detachment is possible, and at least one of both side edges of the absorptive pad is located in the lateral direction outside rather than the inner edge of the side elastic part. The wearing article in any one of 1-8.   The liquid-absorbing structure includes an absorbent core including superabsorbent polymer particles, a liquid-permeable first sheet located on the wearer's body side, and a liquid-impervious sheet located on the opposite side of the body side. A second sheet, a non-liquid-absorbing region in which the first sheet and the second sheet are joined to each other, and a liquid-absorbing region surrounded by the non-liquid-absorbing region and encapsulating the absorbent core. The wearing article according to any one of claims 1 to 9.

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