JP2019068949A - Absorbent article - Google Patents

Abstract

To provide an absorbent article for suppressing back leakage and ventral leakage.SOLUTION: An absorbent article 10 includes a top sheet 14 having liquid permeability, a back sheet 12 having liquid impermeability, and an absorber 13 arranged between the top sheet 14 and the back sheet 12. It is provided with folding parts 20A, 20B formed by folding the top sheet 14 in the way that they protrude in a skin contact direction and elastic members 23 which are provided at end parts 21 to be free ends of the folding parts 20A, 20B and are arranged in an expanded state along a longitudinal direction of the folding parts 20A, 20B. The end parts 21 are directed to a center part of a crotch area 10C of the absorber 13.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an absorbent article, and more particularly, to an absorbent article for enhancing leakage prevention of discharged body fluid.

  Conventionally, an absorbent article such as a urine pad or disposable diaper provided with a pair of solid gathers along the longitudinal direction of the absorber for preventing side leakage of discharged body fluid (hereinafter simply referred to as "body fluid") Is widely known.

  Moreover, in order to prevent not only side leakage but also back leakage and belly leakage, an absorbent article in which a sheet for preventing leakage is provided on the front body side and the back body side is described in, for example, Patent Document 1.

JP, 2001-037809, A

  However, in the case of the absorbent article described in Patent Document 1, when the leak prevention sheet is a thin sheet, the rigidity is low, so it is easily deformed, and it is not possible to effectively prevent back leakage and belly leakage without sufficiently standing up. There is a case. Therefore, there is still room for improvement in the configuration of the seat for suppressing back leakage and belly leakage.

  An object of the present invention is to provide an absorbent article for suppressing back leakage and belly leakage.

  An absorbent article according to the present invention comprises an absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet. Provided at a folded portion formed by folding back the top sheet so as to protrude in the skin contact direction, and at a leading edge portion which is a free end of the folded portion, along the longitudinal direction of the folded portion And an elastic member disposed in an extended state, wherein the leading edge is directed toward the central portion of the crotch region of the absorbent body.

  According to the present invention, since the folded portion is constituted by a plurality of sheets and the rigidity is increased, the standing state by the three-dimensional gathers can be easily maintained, and the back leakage and the belly leakage can be effectively suppressed.

It is a perspective view of an example of the urine pad concerning a 1st embodiment of the present invention. It is a disassembled perspective view of the urine pad shown in FIG. It is the top view which looked at the urine pad of the expansion state which concerns on 1st Embodiment from the top sheet side. It is IV-IV direction sectional drawing in FIG. It is a V-V direction sectional view in FIG. It is the partial schematic diagram of the cross-sectional shape of FIG. 4 in the urine pad of the wearing condition which concerns on 1st Embodiment. It is a figure for demonstrating the function of a bending part which concerns on 2nd Embodiment of this invention, and is the partial top view which looked at the lamination structure of a top sheet and an absorber from the top sheet side. It is sectional drawing of the urine pad which concerns on 2nd Embodiment of this invention, and is IV-IV direction sectional drawing in FIG. It is IX-IX direction sectional drawing in FIG.

  Embodiments of the absorbent article according to the present invention will be described in detail with reference to FIGS. 1 to 9. However, the present invention is not limited to the aspect of this embodiment.

  First, a first embodiment in which the present invention is applied to a urine pad will be described below.

First Embodiment
<Configuration>
The perspective view of an example of the urine pad which concerns on FIG. 1 at 1st Embodiment of this invention is shown. The absorbent article 10 according to the present embodiment relates to a urine pad (absorbent pad). The urine pad 10 can be attached to underwear, a cloth type pants-like exterior body called holder pants made for holding the urine pad 10, or the like, and can be used by being overlapped on the inner side of the disposable diaper It is. The urine pad 10 has a front body region 10F, a back body region 10R, and a crotch region 10C connecting the front body region 10F and the back body region 10R.

  When worn, the front body region 10F is located on the ventral side of the wearer, and the back body region 10R is located on the dorsal side of the wearer. And when worn, the crotch region 10C covers the crotch of the wearer.

  FIG. 2 is a schematic exploded perspective view of the urine pad 10 shown in FIG. 1, and FIG. 3 is a plan view of the urine pad 10 in a stretched state as viewed from the top sheet 14 according to the first embodiment. . The urine pad 10 of FIG. 2 and the absorbent 13 of FIG. 3 are shown in a partially broken state for convenience of explanation.

  As shown in FIG. 2, the urine pad 10 in the present embodiment includes a cover sheet 11 formed of a thin non-woven fabric in order to obtain a good touch, in order from the outer side (skin non-contact side), and liquid impermeability Liquid-pervious top sheet (surface sheet) 14 provided with a back sheet (back surface sheet) 12 having a back, an absorbent body (laminate of five layers to be described later) 13 and folded portions 20A and 20B; It has a laminated structure in which the side sheets 15 are overlapped. In the present embodiment, the folds 20A and 20B are formed by folding the top sheet 14 so as to protrude in the skin contact direction (see FIG. 4). The folded back portions 20A and 20B have a function of blocking the discharged body fluid, and the details will be described later.

  The top sheet 14 has a rectangular shape and is made of a non-woven fabric or the like having liquid permeability. The back sheet 12 is joined to the cover sheet 11, the absorber 13 is disposed between the back sheet 12 and the top sheet 14, and the top sheet 14 is joined to the back sheet 12 via the absorber 13. . As shown in FIG. 2, a pair of notches 11N and 12N are formed on the left and right sides of the crotch region 10C of the cover sheet 11 and the back sheet 12, respectively.

  The absorber 13 of the present embodiment located under the top sheet 14 is an absorption composed of three layers of a first absorption layer 17a, a second absorption layer 17b, and a third absorption layer 17c in this order from the skin contact side. The sex core 17 is sandwiched by a sheet portion 18 formed of two layers, an upper layer sheet 18a and a lower layer sheet 18b. The first absorbent layer 17a is a mixed layer mainly composed of pulp and a super absorbent resin (Super Absorbent Polymer, hereinafter also referred to as "SAP"), and the second absorbent layer 17b is an SAP layer composed of SAP. The third absorbent layer 17c is a pulp layer made of pulp. As shown in FIGS. 2 and 3, the first absorption layer 17a has a rectangular shape, the second absorption layer 17b is configured using two band-shaped ones, and the third absorption layer 17c has a back It has a gourd shape like the shape of the sheet 12.

  The upper layer sheet 18a and the lower layer sheet 18b of the present embodiment sandwiching the absorbent core 17 from above and below are respectively made of tissue, non-woven fabric and the like. The upper layer sheet 18 a and the lower layer sheet 18 b have rectangular shapes, as shown in FIGS. 2 and 3.

  In the present invention, the absorbent core 17 may not have three layers as in the present embodiment, but may have less than three layers or more than three layers. The constituent elements of the first absorbent layer 17a, the second absorbent layer 17b, and the third absorbent layer 17c are not limited to those in this embodiment. For example, the first absorbent layer 17a may be made of only pulp, The third absorbent layer 17c may be a mixed layer of pulp and SAP. Furthermore, the contours of the first absorbent layer 17a, the second absorbent layer 17b, and the third absorbent layer 17c may have various shapes such as an oval, a circle, or a square, in addition to the shapes as in the present embodiment. Is possible. The number of sheets constituting the second absorbent layer 17b is not limited to "2". Similarly, various shapes can be adopted for the shapes of the upper layer sheet 18a and the lower layer sheet 18b. For example, as shown in FIGS. 2 and 3, the upper layer sheet 18a and the lower layer sheet 18b are not limited to smaller than the first absorbent layer 17a and the third absorbent layer 17c, and in the present invention, the first absorbent layer 17a and / or Alternatively, it may be larger than the third absorption layer 17c. Further, in the present invention, the sheet portion 18 wraps the absorbent core 17 in a mode including two or more layers which sandwich the absorbent core 17 from above and below as in the present embodiment, a single layer or more than two layers. Aspects such as core wrap are also acceptable. In the urine pad 10 according to the present embodiment, the absorbent 13 sandwiched by the sheet portions 18 is used. However, in the absorbent article according to the present invention, the absorbent core 17 not sandwiched by the sheet portions 18 is used. It is also good. Furthermore, the order of the arrangement of the first absorption layer 17a, the second absorption layer 17b, and the third absorption layer 17c is not limited to this embodiment. In addition, even if a hole or a slit is provided in the central portion of the first absorbent layer 17a or the like so as to penetrate the same, in order to easily introduce the body fluid into the second absorbent layer 17b or the third absorbent layer 17c and efficiently absorb it. Good.

  A pair of hydrophobic side sheets 15 that form a solid gather is provided at the left and right side edge portions in the width direction of the top sheet 14 in the present embodiment. The pair of side sheets 15 is a member for standing up along the left and right side edges of the absorber 13 when worn and for preventing the side leakage of the discharged body fluid. Notched portions 15N are formed in the outer edge portions of the pair of side sheets 15 in the same shape as the notched portions 11N and 12N of the cover sheet 11 and the back sheet 12. In each of the pair of side sheets 15, a rubber thread 19 as a three-dimensional gather stretchable material is disposed in a stretched state in such a manner as to fold and hold the inner end edge portion toward the absorber 13 side. When the rubber thread 19 contracts, the pair of side sheets 15 stand up toward the skin contact direction of the wearer. The solid gathers can adopt a known configuration used for a conventional urine pad. For example, it can be formed by sandwiching and fixing a solid gathers stretchable material in a stretched state between the layers of the water repellent sheet. In the present embodiment, as shown in FIG. 5 described later, the pair of side sheets 15 are bonded to the left and right side edges of the top sheet 14 so as to seal the left and right side edges of the top sheet 14 in the width direction. ing.

<Folded portion>
4 is a cross-sectional view in the IV-IV direction in FIG. 3, and FIG. 5 is a cross-sectional view in the V-V direction in FIG. In FIG. 4 and FIG. 5, the cover sheet 11 is omitted for the convenience of description.

  As shown in FIGS. 2 to 4, the folded back portion 20A is disposed on the side of the back body region 10R, and the folded back portion 20B is disposed on the side of the front body region 10F. The folded portions 20A and 20B extend in a direction intersecting the longitudinal (front-rear) direction of the absorber 13. In the present embodiment, the folded portions 20A and 20B extend in a direction orthogonal to the longitudinal (front-rear) direction of the absorber 13. The folded back portions 20A and 20B have a leading edge 21 which is a free end and a proximal end 22. The leading edge portion 21 is provided with an elastic member 23 such as a rubber thread disposed in an extended state along the longitudinal direction (width direction of the urine pad 10) of the folded portions 20A and 20B. The leading edge portion 21 sandwiches and fixes the elastic member 23 in a stretched state. The leading edge 21 is oriented toward the center of the crotch region 10C of the absorbent body 13. Here, in the description of the present specification and claims, the “central portion” of the crotch region 10C of the absorbent 13 refers to the central portion of the skin-contacting surface side of the absorbent 13 and the region in the vicinity thereof. It refers to the area that is likely to contact the body fluid first and the area around it. In addition, the position and size of this "central part" may be set by the physical constitution, sex, etc. of the wearer of the absorbent article.

  In the present embodiment, as shown in FIG. 4, the base end portions 22 of the folded portions 20A and 20B are disposed in the region on the skin contact surface side of the absorber 13. In the present embodiment, the base end portions 22 of the folded portions 20A and 20B are disposed on the absorber 13, but may be disposed beyond the longitudinal end portions of the absorber 13. In the present embodiment, one folded portion is disposed on each of the back body region 10R side and the front body region 10F side, but a plurality of folded back portions may be provided. By providing a plurality of folded back portions, it is possible to further enhance the prevention of back belly leakage.

  6 is a partial schematic view of the cross-sectional shape of FIG. 4 in the worn urine pad 10 according to the first embodiment.

  In the worn urine pad 10, the absorber 13 is folded so as to protrude in the non-contact direction of the skin, so the elastic members 23 of the folded portions 20A and 20B disposed on the folded absorber 13 are stretched As it is released and contracted, the folded back portions 20A and 20B rise in the skin contact direction. This is similar to the principle on which the three-dimensional gather of the side sheet 15 stands up. In this embodiment, as shown in FIG. 6, the elastic member 23 stands up in the skin contact direction when worn, and the leading edge 21 of the folded portion 20A follows the curved surface of the body B of the wearer. It becomes possible to demonstrate the function of the stop. Then, since the folded back portion 20A is formed of a plurality of sheets and the rigidity is high, it is easy to maintain the standing state.

  Further, in the present embodiment, since the present effect can be exhibited by folding back the single top sheet 14, the manufacturing cost can be suppressed as compared with the conventional one in which a separate body is provided. In the present embodiment, the effect of suppressing back leakage and belly leakage not only to body fluid but also to watery stool is exhibited.

  And in this embodiment, since base end part 22 of cuffs 20A and 20B is arranged in a field by the side of skin contact of absorber 13, discharged fluid is scooped up by cuffs 20A and 20B. It becomes possible to stop and absorb in the absorber 13 directly below, and it becomes possible to absorb body fluid efficiently in the absorber 13. In the present invention, in order to more efficiently absorb the body fluid into the absorbent body 13, the amount of pulp or SAP of the absorbent body 13 close to the proximal end 22 of the folded portions 20A and 20B may be made higher than the surroundings.

Second Embodiment
In the second embodiment of the present invention, unlike the first embodiment, the absorber 13 is configured to be easily bent so that the portion of the absorber 13 in which the folded portion is disposed protrudes in the skin non-contacting direction. An easily bendable portion 24 is further provided. With this configuration, the folded back portion can be more easily erected in the skin contact direction than in the first embodiment.

  FIG. 7 is a view for explaining the function of the bendable portion 24 according to the second embodiment of the present invention, and FIG. 7 is a view of the laminated structure of the top sheet 14 and the absorber 13 from the top sheet 14 side. It is a partial top view. FIG. 8 is a cross-sectional view of the urine pad 10 according to the second embodiment of the present invention, taken along the line IV-IV in FIG. 3, and FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. In FIG. 7, attention is focused on the laminated structure of the top sheet 14 and the absorbent body 13 (of the first absorbent layer 17a), and the other components are omitted. Further, although the front body side of the absorbent body 13, the bendable portion 24 and the folded back portion 20B are omitted in FIG. 7, the rear body side of the absorbent body 13, the easily bendable portion 24 and the folded back portion 20A The front body side of the absorber 13, the bendable portion 24, and the folded portion 20B have the same configuration. In FIG. 8 and FIG. 9, the description of the cover sheet 11 is omitted for convenience of explanation. About each thing which has the same function among each element which comprises the absorbent article which concerns on this embodiment, the code | symbol same as 1st Embodiment is attached | subjected, and the description is abbreviate | omitted.

  The two foldable portions 24 on the front body side and the back body side are configured to include, for example, a recess and / or a low basis weight portion. In the present embodiment, the bendable portion 24 is configured by a recess. The recess is formed, for example, by compressing the absorber 13 with an emboss roll. The low basis weight portion is formed, for example, by adjusting the amount of pulp and SAP sprayed at the time of production of the absorbent so as to be lower than the surrounding. In the present embodiment, the easily bendable portion 24 is formed in a laminate of the upper layer sheet 18a and the first absorbent layer 17a, as shown in FIGS. However, the easily bendable portion 24 according to the present invention is not limited to these forms, and for example, the slit formed through the absorbent core 17 including the second absorbent layer 17 b or the back sheet 12 side of the absorber 13 It also includes depressions formed by squeezing.

  In the present embodiment, the easily bendable portion 24 has a strip-like rectangular shape in top view (in FIG. 7). Further, as shown in FIG. 7, the easily bendable portion 24 extends continuously in the longitudinal (front and rear) direction (vertical direction in FIG. 7) of the absorber 13. The easily bendable portion 24 is disposed along the central axis C of the absorber 13 extending in the longitudinal (front-rear) direction of the absorber 13 as shown in FIG. 7. Specifically, the easily bendable portion 24 has two axes extending in the longitudinal (front-rear) direction of the absorber 13, that is, the central axis of the strip rectangular shape, and the skin contact surface of the first absorption layer 17a. It forms in the absorber 13 so that the central axis of the rectangle which is a side shape may correspond.

  The two easily bendable portions 24 on the front body side and the rear body side are provided on the skin contact surface side of the absorber 13. Further, as shown in FIG. 7, the rear-body-side easily bendable portion 24 is disposed so as to overlap and intersect the extension direction of the base end portion 22 of the folded-back portion 20A. That is, the rear-side easily bendable portions 24 are disposed so as to overlap the proximal end portion 22 of the folded-back portion 20A. The positional relationship between the front body-side easily bendable portion 24 and the folded back portion 20B is also similar to the above-described positional relationship between the rear body-side easily bendable portion 24 and the folded back portion 20A. With this configuration, in the easily bendable portion 24, the portion of the absorber 13 in which the folded portions 20A and 20B are disposed is easily bent so that the portion of the absorber 13 protrudes in the skin non-contacting direction, according to the first embodiment. Also, the folded portions 20A and 20B can easily stand up in the skin contact direction, and the damming function can be effectively exhibited.

  In the present embodiment, the folded back portions 20A and 20B and the two easily bendable portions 24 are respectively disposed at both ends of the absorbent body 13 in the longitudinal direction. According to this configuration, since the entire absorbent body 13 located between the folded portion 20A and the folded portion 20B can be efficiently absorbed, the amount of fluid that can not be absorbed is reduced, and the fluid can be effectively blocked. In the present invention, the two easily bendable portions 24 may be connected to be formed continuously in the longitudinal (front-rear) direction of the absorber 13 as one easily bendable portion 24. In addition, the foldable portion 24 may extend discontinuously (or intermittently) in the longitudinal (front-back) direction of the absorber 13 or may be provided in plurality on the skin contact surface side of the absorber 13. Good. Furthermore, the two easily bendable portions 24 may be provided on the end side in the width direction from the central axis of the first absorbent layer 17a. Furthermore, at a portion where the base end portion 22 of the folded back portion intersects with the easily bent portion 24, the blocking portion is provided at the crossing portion so that liquid leakage does not occur outward along the easily bent portion 24. May be provided. Furthermore, in the present embodiment, the easily bendable portion 24 is provided beyond the base end portion 22 in the longitudinal direction of the absorber 13, but in the present invention, the easily bendable portion 24 is provided in the longitudinal direction of the absorber 13. , And may be provided so as not to exceed the proximal end 22 (on or in the crotch region with respect to the proximal end 22).

<Others>
The present invention is not limited to the above-described embodiments and the above-described variations, and appropriate modifications and changes can be made without departing from the technical concept of the present invention.

  For example, the absorbent article according to each of the above-described embodiments or the modifications thereof is not limited to the above-described structure, but may be any structure as long as it is an absorbent article defined in the claims. It may be. For example, the present invention can be applied to various absorbent articles for adults and infants, such as unfolded and pants-type disposable diapers.

  In addition, although the pair of notches 11N and 12N is formed in the urine pad 10 according to each of the above-described embodiments or the modification, the shape of the urine pad 10 can be appropriately changed in the present invention, For example, it is also possible to make it a simple rectangular shape without providing these notches.

  Further, in the absorbent article according to each of the above-described embodiments or the variation thereof, the folded back portion is provided on the front body region 10F side and / or the back body region 10R side, but may be provided on the crotch region 10C side Good. Furthermore, in each of the above embodiments or variations thereof, the folded back portion 20A is disposed on the back body region 10R side and the folded back portion 20B is disposed on the front body region 10F side, but the folded back portion is on the front body region 10F side Alternatively, it may be disposed on any one of the back body region 10R side. In each of the above-described embodiments or the modification thereof, the folded-back portion is provided over the entire width direction of the top sheet 14, but may be partially provided in the width direction of the top sheet 14. Further, the number, size, and shape of the folded-back portions can also be appropriately determined as long as the purpose of the present invention for suppressing back leakage and belly leakage is satisfied.

DESCRIPTION OF REFERENCE NUMERALS 10 urine pad 10F front body region 10R back body region 10C crotch region 11 cover sheet 11N, 12N, 15N notch 12 back sheet 13 absorbent body 14 top sheet 15 side sheet 17 absorbent core 17 a first absorbent layer 17 b second absorbent Layer 17 c Third absorbent layer 18 Sheet portion 18 a Upper layer sheet 18 b Lower layer sheet 19, 23 Thread rubber (elastic member)
20A, 20B folded portion 21 leading edge 22 proximal end 24 easily bent portion

Claims (7)

An absorbent article comprising: a liquid-permeable top sheet; a liquid-impermeable back sheet; and an absorber disposed between the top sheet and the back sheet,
A folded portion formed by folding back the top sheet so as to protrude in the skin contact direction;
An elastic member provided at a leading edge which is a free end of the folded portion and disposed in an extended state along a longitudinal direction of the folded portion;
The absorbent article characterized in that the leading edge is directed toward the center of the crotch region of the absorbent body.   The base end part of the said folding | returning part is arrange | positioned in the area | region by the side of the skin contacting surface of the said absorber, The absorbent article of Claim 1 characterized by the above-mentioned. It further comprises an easily bendable portion formed on the absorber,
The absorbent article according to claim 1, wherein the easily foldable portion extends in the longitudinal direction of the absorbent body.   The absorbent article according to claim 3, wherein the easily foldable portion is disposed to overlap a proximal end portion of the folded portion.   The absorbent article according to claim 4, wherein the folded portion and the easily foldable portion are respectively disposed at longitudinal end portions of the absorber.   The absorbent article according to claim 4, wherein the easily foldable portion is disposed along a central axis of the absorbent body, which extends in a longitudinal direction of the absorbent body.   The said easily bendable part is comprised including a recessed part and / or a low basis weight part, The absorbent article as described in any one of the Claims 3-6 characterized by the above-mentioned.

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