JP2011182907A - Absorptive article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorptive article preventing the outer side and periphery of the absorptive article from getting wet by the dew condensation of moisture coming out from the inside of the absorptive article through an outer side sheet member. <P>SOLUTION: The absorptive article is to be applied to an area including the crotch part of a wearer, and includes an absorption core 11 for absorbing moisture, an inner side sheet member 12 which is water permeable in at least partial area and arranged on the skin surface side of the absorption core 11, and an outer side sheet member 13 arranged on the outer surface side of the absorption core 11. The outer side sheet member 13 includes a porous resin film which has air permeability and a waterproof property, an exterior sheet which has air permeability and is piled up on the outer surface side of the porous resin film, and an adhesive in which a water-absorbing polymer is mixed and which is applied between the porous resin film and the exterior sheet to bond them. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an absorbent article applied to a region including a wearer's crotch.

  In recent absorbent articles, many outer sheet members have air permeability in order to prevent stuffiness. For example, in the absorbent article described in Patent Document 1, an outer sheet member in which a porous resin film and a nonwoven fabric are bonded together is used. By using a porous resin film for the outer sheet member, water vapor inside the absorbent article passes through the outer sheet member and escapes to the outside of the absorbent article, thereby preventing stuffiness. Moreover, the strength improvement or texture improvement of an outer sheet | seat member, etc. are achieved by bonding a nonwoven fabric to a porous resin film.

JP 2004-136678 A

  However, as described above, since the outer sheet member of the absorbent article has air permeability, water vapor that has escaped to the outside of the absorbent article through the outer sheet member becomes dew condensation due to a temperature difference between the inside and outside, and the wearer's There is a problem that it wets the skin or other worn articles worn by the wearer. When the skin or worn article becomes wet due to condensation, it is uncomfortable and the worn article may need to be replaced.

  For example, when the above-mentioned absorbent article is a urine absorption pad that is used by being superimposed on the skin surface side of a disposable diaper, the outer diaper is formed by condensation of water vapor that has flowed out of the urine absorption pad through the outer sheet member. May get wet. In this case, the diaper may need to be replaced regardless of whether urine or other excrement is not attached.

  Therefore, the problem to be solved by the present invention is to provide an absorbent article that can prevent the outside and the periphery of the absorbent article from getting wet due to condensation of water vapor that has escaped from the inside of the absorbent article via the outer sheet member. is there.

  In order to solve the above-described problems, in the invention of claim 1, the absorbent article is applied to a region including the wearer's crotch, and the absorbent core that absorbs moisture and at least a part of the region are water permeable. An inner sheet member disposed on the skin surface side of the absorbent core and an outer sheet member disposed on the outer surface side of the absorbent core, wherein the outer sheet has air permeability and waterproofness. A porous resin film, an exterior sheet that has air permeability and is superimposed on the outer surface side of the porous resin film, a water-absorbing polymer is mixed, and is applied between the porous resin film and the exterior sheet. And an adhesive for joining the two.

  Moreover, in invention of Claim 2, in the absorbent article which concerns on invention of Claim 1, the said exterior sheet | seat is formed with a nonwoven fabric.

  Moreover, in invention of Claim 3, the absorbent article which concerns on invention of Claim 1 or Claim 2 is a urine absorption pad.

  According to the invention described in claim 1, in the outer sheet member of the absorbent article, the water-absorbing polymer is mixed in the adhesive that joins the porous resin film and the exterior sheet. Therefore, the condensation of water vapor that has escaped from the inside of the absorbent article through the porous resin film of the outer sheet member is absorbed by the water-absorbing polymer mixed in the adhesive, so that the condensation causes the outside of the absorbent article and The surrounding area can be prevented from getting wet. As a result, inconveniences such as wet skin or other worn articles due to condensation can be avoided.

  Moreover, since the exterior sheet has air permeability, the air permeability of the outer sheet member is not impaired. This does not impair the ability to prevent stuffiness inside the absorbent article.

  According to invention of Claim 2, since an exterior sheet is formed with an inexpensive nonwoven fabric, the cost of an absorbent article can be suppressed. Further, the tensile strength of the outer sheet member can be effectively reinforced while improving the texture of the outer surface of the outer sheet member.

  According to the third aspect of the present invention, it is possible to prevent the outer diaper and the like from getting wet due to the condensation of water vapor that has flowed out of the urine absorbing pad through the outer sheet member, and the exchange frequency of the outer diaper and the like is suppressed it can.

It is sectional drawing of the urine absorption pad as an absorbent article which concerns on one Embodiment of this invention. It is sectional drawing which shows the structure of the outer sheet | seat member of the urine absorption pad of FIG.

  With reference to FIG.1 and FIG.2, the urine absorption pad as an absorbent article which concerns on one Embodiment of this invention is demonstrated.

  The urine absorption pad 10 according to the present embodiment is a disposable absorbent article that is used by being laid inside a crotch portion such as a tape-type or pants-type diaper. By laying the urine absorbing pad 10 on the inside of a diaper or the like, the liquid absorption capacity of the diaper is reinforced, so that it can cope with a case where a large amount of urine is urinated or a soft stool containing a large amount of water is defecation. become. In addition, when the amount of excrement such as urine is relatively small, only the inner urine absorbing pad 10 is exchanged by laying the urine absorbing pad 10 on the inner side of the diaper, etc. Since it can be used as it is, there is an advantage that the frequency of changing diapers can be reduced.

  In addition, although this embodiment demonstrated the case where this invention was applied to the urine absorption pad 10, you may apply this invention to a tape-type or underpants-type disposable diaper. A tape-type diaper is a type in which fastening members such as hook-and-loop fasteners are provided on both the left and right sides of the rear edge of the diaper. A pant-type diaper is a pair of left and right leg holes and waist holes. This is a type of diaper that is attached to the left and right leg holes through the wearer's legs.

  As shown in FIG. 1, the urine absorption pad 10 includes an absorption core 11, an inner sheet member 12, and an outer sheet member 13. Absorption core 11 absorbs excretion fluid (for example, water contained in urine or feces) excreted by the wearer. More specifically, the absorbent core 11 includes an absorbent material 111 and a packaging sheet (for example, tissue paper) 112 that has water permeability and wraps the absorbent material 111. The absorbent material 111 is composed of, for example, a fiber assembly composed of aggregated fibers and a water-absorbing polymer mixed or added to the fiber assembly.

  At least a part of the inner sheet member 12 has water permeability, and is disposed on the skin surface side of the absorbent core 11. The inner sheet member 12 includes an inner sheet member main body 21, left and right upright seat portions 22, and left and right elastic members 23. The left and right elastic members 23 are respectively applied to the distal ends of the left and right upright seat portions 22 in a state of being stretched in the vertical direction (front-rear direction), and the upright seat portions 22 are applied to the skin surface of the wearer by the contraction force. Stand up. The elastic member 23 and the upright sheet portion 22 constitute a three-dimensional gather, and side leakage of urine and feces excreted by the three-dimensional gather is prevented. The elastic member 23 and the upright sheet portion 22 may be omitted.

  The inner sheet member main body 21 and the upright sheet portion 22 of the inner sheet member 12 are constituted by, for example, a top sheet 24 and left and right side sheets 25. The top sheet 24 has water permeability that allows water to pass therethrough, and is disposed along the vertical direction at the central portion of the inner sheet member body 21 in the horizontal direction (left-right direction). The left and right side sheets 25 are formed of a hydrophobic nonwoven fabric or the like, and are arranged along the vertical direction so as to overlap the both side parts of the top sheet 24 from the skin surface side. And a bonding means such as an adhesive (for example, a hot melt adhesive).

  The outer sheet member 13 has air permeability and waterproofness that blocks water, and is disposed on the outer surface side of the absorbent core 11. More specifically, the outer sheet member 13 includes a porous resin film 31, an exterior sheet 32, and an adhesive 33, as shown in FIG.

  The porous resin film 31 is a resin film in which a large number of fine holes are formed. The porous resin film 31 has a breathability that allows water vapor to pass through and a waterproof property that blocks water, and is disposed on the skin surface side surface of the outer sheet member 13. Is done. The diameter of the hole formed in the film 31 is set to a size that allows water vapor to pass but does not allow water to pass. Such a porous resin film 31 is obtained, for example, by a method of mixing a film resin material with an inorganic filler and forming it into a sheet shape, and then stretching the sheet in a uniaxial or biaxial direction.

  The exterior sheet 32 has air permeability and is superimposed on the outer surface side of the porous resin film 31. As a material of the exterior sheet 32, for example, a nonwoven fabric is used.

  As the adhesive 33, an adhesive mixed with a water-absorbing polymer (for example, a hot melt adhesive) is used, and is applied between the porous resin film 31 and the exterior sheet 32 to join the two together. In this regard, the porous resin film 31 and the exterior sheet 32 are used in addition to the configuration in which the adhesive that joins the porous resin film 31 and the exterior sheet 32 is mixed with a water-absorbing polymer. Adhesive mixed with water-absorbing polymer can be applied to some areas between them (for example, the central part where condensation is likely to occur), and normal adhesive can be applied to other areas. Monkey. In the case of the latter configuration, when the absorbent polymer in the adhesive absorbs moisture, a region where condensation is likely to occur (for example, the central portion, etc.) while suppressing the range in which the adhesive strength decreases due to the influence of the absorbent polymer. As for, dew condensation can be accurately absorbed by the water-absorbing polymer mixed in the adhesive.

  In the urine absorption pad 10 according to the present embodiment, as described above, the water absorbing polymer is mixed in the adhesive 33 that joins the porous resin film 31 and the exterior sheet 32 in the outer sheet member 13. Therefore, when condensation of water vapor that has escaped from the inside of the urine absorption pad 10 via the porous resin film 31 of the outer sheet member 13 occurs, the condensation is absorbed by the water-absorbing polymer mixed in the adhesive 33. Therefore, it is possible to prevent the outside and the periphery of the urine absorbing pad 10 from getting wet due to condensation. As a result, inconveniences such as wet skin or other worn articles (for example, outer diapers, etc.) due to condensation can be avoided. Thereby, exchange frequency, such as an outside diaper, can be controlled.

  Moreover, since the exterior sheet 32 has air permeability, the air permeability of the outer sheet member 13 is not impaired. As a result, the ability to prevent stuffiness inside the urine absorbing pad 10 is not impaired.

  Moreover, since the exterior sheet | seat 32 is formed with a cheap nonwoven fabric, the cost of the urine absorption pad 10 can be suppressed. Further, the tensile strength of the outer sheet member 13 can be effectively reinforced while improving the texture of the outer surface of the outer sheet member 13.

  DESCRIPTION OF SYMBOLS 10 Urine absorption pad, 11 Absorption core, 111 Absorption material, 112 Packaging sheet, 12 Inner sheet member, 13 Outer sheet member, 21 Inner sheet member main body, 22 Standing sheet part, 23 Elastic member, 24 Top sheet, 25 Side sheet, 31 porous resin film, 32 exterior sheet, 33 adhesive.

Claims (3)

An absorbent article applied to an area including the wearer's crotch,
An absorbent core that absorbs moisture;
At least a part of the region has water permeability, and an inner sheet member disposed on the skin surface side of the absorbent core; and
An outer sheet member disposed on the outer surface side of the absorbent core;
With
The outer sheet is
A porous resin film having breathability and waterproofness;
An exterior sheet having air permeability and superimposed on the outer surface side of the porous resin film;
A water-absorbing polymer is mixed, and the absorbent article is provided between the porous resin film and the exterior sheet and includes an adhesive that joins the two. The absorbent article according to claim 1,
The said exterior sheet | seat is formed with a nonwoven fabric, The absorbent article characterized by the above-mentioned.   The absorbent article according to claim 1 or 2 is a urine absorbent pad.

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