JP7059485B2 - Pants type absorbent article - Google Patents

Description

The present invention relates to a pants-type absorbent article that effectively prevents stuffiness and is comfortable to wear.

In general, there are two types of disposable diapers: infant disposable diapers and adult disposable diapers. Of these, infant disposable diapers are supplementarily worn by infants until they reach the age at which they can take excretory behavior by themselves, and there are tape-stop type and pants-type (pants-type) disposable diapers. On the other hand, adult disposable diapers include a tape stopper type, a urine absorbing pad, a pants type, and the like, and these disposable diapers are appropriately selected and used according to the need for long-term care in excretion of the wearable person.

These absorbent articles are composed of a liquid permeable top sheet, a liquid permeable back sheet, and an absorbent body arranged between the two sheets. By adopting such a configuration, body fluids such as urine permeate through the top sheet of the absorbent article and are absorbed by the absorber, and are prevented from leaking to the outside by the back sheet.

The pants-type absorbent article has an interior pad and an exterior body laminated on the back sheet side of the interior pad, and is worn by the wearer with the same feeling as underwear. In order to prevent the leakage of excrement, the pants-type absorbent article is in a state where the body side of the absorbent article and the space surrounded by the wearer's skin are substantially sealed when worn. Often feels hot or stuffy, especially in the lower abdomen and crotch.

As an invention aimed at dealing with the problems of heat and stuffiness of a pants-type absorbent article, for example, Patent Document 1 includes a top sheet, a back sheet, and an absorber, and the absorber is a cooling layer. Disclosed is a pants-type absorbent article characterized in that the cooling layer is formed of an aggregate of fibers and contains a cooling substance that cools the excrement liquid by contact with the excrement liquid. There is.

Japanese Unexamined Patent Publication No. 2009-247644

However, for absorbent articles, depending on the season, such as in summer, it may be preferable to maintain high heat retention in some parts and lower heat retention in some parts, but Patent Document 1 The present invention focuses on cooling only a part of the region, and is not an invention aimed at increasing the heat retention of a part of the region. Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an absorbent article having a heat-retaining property adjusted according to a site and having a refreshing wearing feeling regardless of the season.

In view of the above problems, the inventors of the present invention have conducted diligent research. As a result, they have found that the above problems can be solved by adjusting the heat retention of the outer body of the pants-type absorbent article in each region of the waist circumference region, the waist circumference region, the lower abdomen region, the buttocks region, and the inseam region. Has been completed. Specifically, the present invention provides the following.

(1) A liquid-permeable top sheet, a liquid-impermeable back sheet, and an interior pad having an absorber sandwiched between the top sheet and the back sheet, and a non-woven fabric and stretchable fabric laminated on the back sheet side of the interior pad. It is a pants-type absorbent article composed of an exterior body formed by laminating sex materials, and the exterior body is a waist area, a waist area, a lower abdomen area or a waist area from the waist to the crotch of the wearer. It consists of a buttock region and an inseam region, and the heat retention of the exterior body is higher in the waist circumference region than in the lower abdomen region and buttock region, higher in the lower abdomen region and buttock region than in the inseam region, and the waist circumference region has two layers. It is a laminated body in which an elastic elastic member is sandwiched between non-woven fabrics, and the heat retention property when the laminated body is stretched by 182% in the stretchable direction is 50% or more and less than 70%. It is composed of a composite stretchable sheet in which at least two layers of non-woven fabric and an elastic film sandwiched between them are integrated by heat fusion or ultrasonic adhesion, and heat retention when the composite stretchable sheet is stretched by 182% in the stretch direction. The property is 40% or more and less than 60%, the inseam region is composed of one layer or two layers of non-woven fabric, and the heat retention in a non-stretched state is 10% or more and less than 40%. A pants-type absorbent article joined to the body side surface of the exterior body from the lower abdominal region and the buttocks region to the inseam region.

(2) The waist circumference region is composed of a front waist circumference region and a rear waist circumference region, and the area of the front waist circumference region is smaller than the area of the rear waist circumference region, and an elastic elastic member provided in the front waist circumference region. The pants-type absorbent article according to (1), wherein the number of the members is smaller than the number of elastic elastic members provided in the posterior waist circumference region.

(3) The pants-type absorbent article according to (1) or (2), wherein the elastic film constituting the composite elastic sheet of the lower abdomen region and the buttocks region has a plurality of openings in a plan view.

(4) The opening has a short side of 0.1 mm or more and 0.3 mm or less along the stretching direction of the stretchable film and 0.3 mm or more and 0.7 mm or less along the direction orthogonal to the stretching direction. The openings having a long side and adjacent to each other are separated from each other by 0.5 mm or more and 1.0 mm or less along the expansion and contraction direction, and 0.3 mm or more and 0 or more along the direction orthogonal to the expansion and contraction direction. The pants-type absorbent article according to (3), which is separated by 0.7 mm or less.

(5) The composite elastic sheet has a breathability of 20 cm ³ / cm ² · sec or more, which is measured according to JIS L 1096-A (Frazil method) in a non-stretched state, from (1) to (1). The pants-type absorbent article according to any one of 4).

(6) The composite elastic sheet has a breathability of 50 cm ³ / cm ² · sec or more, which is measured according to JIS L 1096-A (Frazil method) when stretched by 150% in the expansion / contraction direction. The pants-type absorbent article according to any one of (1) to (5).

Since the pants-type absorbent article of the present invention uses materials having different heat-retaining performance in each of the waist area, waist area, lower abdomen area, buttocks area, and inseam area, it is effective for stuffiness in the inseam area and the like. It is possible to sufficiently maintain the heat retention of the lower abdomen region, the buttocks region, and the waist circumference region, and to maintain a good wearing feeling of the pants-type absorbent article regardless of the season.

It is a plane development view of the pants type absorbent article of this invention. It is a perspective view of the pants type absorbent article of this invention.

<Pants type absorbent article>
FIG. 1 is a plan view of the pants-type absorbent article 1 of the present invention, and FIG. 2 is a perspective view of the pants-type absorbent article 1 of the present invention. The pants-type absorbent article 1 of the present invention comprises an interior pad 2 and an exterior body 3 formed by laminating the interior pad 2 on the back sheet side.

[Interior pad]
The interior pad 2 has a liquid-permeable top sheet, a liquid-permeable back sheet, and an absorber sandwiched between the top sheet and the back sheet, and the interior pad 2 has a lower abdominal region 63 described later. And from the buttocks region 73 to the inseam region 8, it is joined to the body side surface of the exterior body 3 described later.

(Top sheet)
The top sheet may be formed of a base material having a liquid permeability that enables the transfer of body liquid to the absorber, and may be, for example, a non-woven fabric such as a thermal bond non-woven fabric or a spunbond non-woven fabric, or a thermal bond non-woven fabric / spunbond. It is formed of a material such as a composite non-woven fabric in which non-woven fabrics are laminated, an open film such as an open polyethylene film, a foamed film such as polyethylene foam or urethane foam, or a composite sheet in which these are laminated. Further, the surface of the top sheet may be embossed or perforated in order to improve the liquid permeability. As a method for performing these embossing and drilling processes, known methods can be carried out without limitation. Further, in order to reduce irritation to the skin, the top sheet may contain a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizer and the like. Further, from the viewpoint of strength and workability, the basis weight of the top sheet is preferably 18 g / m ² or more and 40 g / m ² or less. The shape of the top sheet is not particularly limited, but may be any shape that covers the absorber, which is necessary for guiding the body fluid to the absorber so as not to leak.

(Back sheet)
The back sheet may be formed by using a base material having a liquid impermeable property so that the body fluid held by the absorber does not wet the clothes, and is a material such as a resin film or a composite sheet in which a resin film and a non-woven fabric are laminated. Formed from. The non-woven fabric used for the composite sheet is not particularly limited in the manufacturing method, and for example, a spunbonded nonwoven fabric, a melt-blown nonwoven fabric, a spunbonded nonwoven fabric / melt-blow nonwoven fabric, a composite nonwoven fabric obtained by laminating a spunbonded nonwoven fabric / melt-blow nonwoven fabric / spunbonded nonwoven fabric, and a composite nonwoven fabric. These composite materials can be mentioned. Examples of the resin film include polyester, polyvinyl alcohol, polyethylene, polypropylene, and a composite film of polyethylene and polypropylene. Further, from the viewpoint of strength and workability, the basis weight of the back sheet is preferably 15 g / m ² or more and 40 g / m ² or less. Further, in order to prevent stuffiness at the time of mounting, it is preferable that the back sheet has breathability. In order to provide the back sheet with breathability, for example, a filler may be blended in the resin film of the base material, or the back sheet may be embossed. Calcium carbonate can be mentioned as the filler, and a known method can be used without limitation as the blending method.

(Absorber)
The absorber preferably contains an absorbent fiber as a base material and a super absorbent polymer (SAP). The absorbent fiber is not particularly limited as long as it is generally used for absorbent articles such as menstrual napkins, diapers and urine absorbing pads. For example, fluff pulp, cotton, rayon, acetate, tissue, absorbent paper and hydrophilic fiber are used. Rayon and the like can be mentioned. Among these, it is preferable to use fluff pulp from the viewpoint of absorbability. Examples of the fluff pulp include those obtained by defibrating wood pulp, synthetic fiber, polymer fiber, non-wood pulp and the like into a cotton-like shape. The absorbent fiber of the absorber preferably has a basis weight of 100 g / m ² or more and 800 g / m ² or less so as not to impair the absorption performance and the touch.

The superabsorbent polymer is not particularly limited as long as it can absorb body fluids and prevent backflow, and includes sodium polyacrylate, polyaspartic acid, and (starch-acrylic acid) grafts. A polymer formed from a material such as a polymer, a (acrylic acid-vinyl alcohol) copolymer, a (isobutylene-maleic anhydride) copolymer, and a saponified product thereof can be used. Among these, sodium polyacrylate is preferable from the viewpoint of the amount of absorption per weight. The SAP amount of the absorber is preferably 50 g / m ² or more and 500 g / m ² or less, and the content is 15% by mass or more and 50% by mass or less so as not to impair the absorption performance and the touch. preferable.

In the absorber, the morphology of the absorbent fiber and the SAP may be one formed by mixing SAP particles in the absorbent fiber, or a SAP sheet in which SAP particles are fixed between hydrophilic substrates. preferable. Further, for the purpose of preventing leakage of SAP particles and stabilizing the shape of the absorber, it is preferable to wrap the absorber in a carrier sheet. The base material of the carrier sheet may be any one having hydrophilicity, and examples thereof include hydrophilic non-woven fabrics such as tissue, absorbent paper, and air-laid non-woven fabric. When a plurality of carrier sheets are provided, the base materials of the carrier sheets may be the same or different.

[Exterior body]
The exterior body 3 is laminated on the back sheet side of the interior pad 2, and is formed by laminating a non-woven fabric and an elastic material. In the exterior body 3, the front side portion 6 and the rear side portion 7 are arranged with the inseam region 8 as the center. Then, the exterior body 3 is folded in half in the inseam region 8 so that the front side portion 6 and the rear side portion 7 overlap each other, and both side edges of the front side portion 6 and both side edges of the rear side portion 7 overlap each other. It is connected by a side seal portion 9 forming a joint portion. As a result, the exterior body 3 constitutes the pants-type absorbent article 1 in the form of removable pants having an elastic waist opening 4 and a pair of leg openings 5. Then, when the pants-type absorbent article 1 is worn, the front side portion 6 covers the front side of the wearer, the front side waist portion, the front side waist circumference portion, the lower abdomen portion, and the crotch portion, and the posterior side portion 7 is the back side of the wearer. The inseam region 8 covers the posterior waist, the posterior waist, the buttocks, and the crotch, and the inseam region 8 covers the wearer's crotch. The front waist region 61 is located on the front side of the waist opening 4 of the exterior body 3, and the posterior waist region 71 is located on the rear side, and the crotch portion is relayed from the front waist portion of the wearer. Then, toward the posterior hip region, the anterior hip region 61, the anterior waist region 62, the lower abdominal region 63, the inseam region 8, the hip region 73, the posterior hip region 72, and the posterior hip region 71 are arranged in this order. The front hip region 61 and the posterior hip region 71, the front waist region 62 and the posterior hip region 72, the lower abdominal region 63, and the buttocks region 73 are in a corresponding relationship and face each other. The anterior waist area 61, the anterior waist area 62, the lower abdomen area 63, the inseam area 8, the buttock area 73, the posterior waist area 72, and the posterior waist area 71 are respectively the laminate of regions adjacent to each other and heat. It is preferable that they are integrated by means such as fusion or ultrasonic bonding.

(Heat retention)
The heat retention of the exterior body 3 is higher in the anterior girth region 62 and the posterior girth region 72 than in the lower abdominal region 63 and the buttocks region 73, and higher in the lower abdominal region 63 and the buttocks region 73 than in the inseam region 8. There is. By adjusting the heat retention of the exterior body 3 as described above, it becomes easier to cool the crotch part where heat and stuffiness are likely to occur, and by keeping the waist and waist area where heat retention is necessary, the pants type absorbency. It is possible to improve the wearing feeling of the article 1.

In the present specification, the evaluation of the heat retention property can be measured using a heat flow measurement tester, for example, "KES-F7 Thermolab " manufactured by Kato Tech Co., Ltd. More specifically, the sample is set on a hot plate set to a constant temperature (room temperature + 10 ° C; for example, 30 ° C), brought into contact with air (for example, 20 ° C), and a constant rate of wind is blown to the sample. At this time, the heat retention property (%) may be measured by determining the amount of heat lost through the sample.

(Front waist area, posterior waist area)
The front waist circumference region 61 and the rear waist circumference region 71 are located at the waist opening 4 of the exterior body 3. The structure of the front waist circumference region 61 and the rear waist circumference region 71 is not particularly limited, but usually has a structure in which an elastic elastic member is sandwiched between two layers of nonwoven fabrics. .. The nonwoven fabric used for forming the front waist region 61 and the rear waist region 71 is not particularly limited, but is a nonwoven fabric such as a thermal bonded nonwoven fabric and a spunbonded nonwoven fabric, such as polypropylene, polyester, and polyethylene. A non-woven fabric made of the thermoplastic resin of the above can be used. When these non-woven fabrics are used, the basis weight thereof may be 18 g / m ² or more and 40 g / m ² or less. As the elastic elastic member, for example, a thread rubber such as a polyurethane thread rubber may be used.

(Front waist circumference area, posterior waist circumference area)
The front waist circumference region 62 and the rear waist circumference region 72 are laminated bodies in which elastic elastic members are sandwiched between two layers of non-woven fabric, and the heat retention property when the laminated body is stretched by 182% in the expansion and contraction direction is 50% or more. It is 70% or less, more preferably 50% or more and 60% or less. Here, the nonwoven fabric used for the front waist circumference region 62 and the rear waist circumference region 72 is not particularly limited, but is a nonwoven fabric such as a thermal bonded nonwoven fabric and a spunbonded nonwoven fabric, such as polypropylene, polyester, and polyethylene. A non-woven fabric made of a thermoplastic resin can be used. When these non-woven fabrics are used, the basis weight thereof may be 10 g / m ² or more and 25 g / m ² or less, and more preferably 15 g / m ² or more and 25 g / m ² or less. Further, as the elastic elastic member, a thread rubber such as a polyurethane thread rubber can be used.

The front girth region 62 and the rear girth region 72 constituting the girth region are configured so that the area of the front girth region 62 is smaller than the area of the rear girth region 72, and is provided in the front girth region 62. The number of elastic elastic members to be used is also smaller than the number of elastic elastic members used in the posterior waist circumference region 72. The area of the front waist circumference region 62 is preferably 15,000 mm ² or more and 60,000 mm ² or less, and more preferably ^20,000 mm ² or more and 40,000 mm 2 or less. The area of the rear waist circumference region 72 is preferably 30,000 mm ² or more and 100,000 mm ² or less, and more preferably 50,000 mm ² or more and 80,000 mm ² or less. Regarding the number of elastic elastic members, it is preferable that the front waist circumference region 62 has an interval of 3 mm or more and 10 mm or less, 3 or more and 15 or less, and the rear waist circumference region 72 has an interval of 3 mm or more and 10 mm or less. The number is preferably 6 or more and 20 or less.

(Lower abdomen area, buttocks area)
The lower abdomen region 63 and the buttock region 73 are composed of a composite elastic sheet in which at least two layers of non-woven fabric and an elastic film sandwiched between them are integrated by heat fusion or ultrasonic adhesion, and the composite elastic sheet is expanded and contracted. The heat retention property when extended by 182% in the direction is 40% or more and less than 60%, and more preferably 40% or more and 50% or less. Here, the nonwoven fabric used for the lower abdomen region 63 and the buttocks region 73 is not particularly limited, but is a nonwoven fabric such as a thermal bonded nonwoven fabric and a spunbonded nonwoven fabric, and is a thermoplastic resin such as polypropylene, polyester, or polyethylene. A non-woven fabric made of the above can be used. When these non-woven fabrics are used, the basis weight thereof may be 10 g / m ² or more and 25 g / m ² or less, and more preferably 15 g / m ² or more and 20 g / m ² or less. The buttock region 73 may be provided with a buttock region elastic elastic member 731, whereby the fit of the pants-type absorbent article 1 to the wearer may be improved.

(Breathable)
This composite elastic sheet preferably has a breathability of 20 cm ³ / cm ² · sec or more, measured in accordance with JIS L 1096-A (Frazil method) in a non-stretched state, and is preferably 30 cm ³ / cm ² . -It is more preferable to have an air permeability of 100 cm ³ / cm ² · sec or less for a second or more. Further, the composite elastic sheet has a breathability of 50 cm ³ / cm ² · sec or more, which is measured in accordance with JIS L 1096-A (Frazil method) when expanded by 150% in the expansion / contraction direction. It is preferable to have an air permeability of 70 cm ³ / cm ² · sec or more and 200 cm ³ / cm ² · sec or less. When the air permeability of the composite elastic sheet is within the above range, the air permeability and heat retention of the lower abdominal region 63 and the buttocks region 73 are appropriately compatible with each other, effectively preventing stuffiness and providing a feeling of wearing. It is possible to provide a good pants-type absorbent article.

(Elastic film)
The stretchable film used for the lower abdomen region 63 and the buttock region 73 may be a stretchable film, and for example, a film formed of a polyester-based elastomer, a polyolefin-based elastomer, a polyurethane-based resin, a polyamide-based resin, or the like. Can be mentioned. Of these, a polyurethane resin film is preferable from the viewpoint of cost and stretchability. The stretchable film preferably has a plurality of openings in a plan view. The shape of the opening can be a square, a rectangle, a circle, an ellipse, and a polygon such as a triangle and a pentagon, but a rectangle such as a square and a rectangle is preferable. This opening has a short side of 0.1 mm or more and 0.3 mm or less along the stretching direction of the stretchable film and a long side of 0.3 mm or more and 0.7 or less along the direction orthogonal to the stretching direction. The adjacent openings are separated from each other by 0.5 mm or more and 1.0 mm or less along the expansion / contraction direction, and 0.3 mm or more and 0.7 mm or less along the direction orthogonal to the expansion / contraction direction. Is preferable. The aperture ratio of the stretchable film is preferably 7% or more and 14% or less. By adjusting the size of the opening and the aperture ratio of the stretchable film as described above, the strength of the stretchable film and the air permeability can be appropriately compatible with each other.

(Inseam area)
The inseam region 8 is composed of one layer or two layers of non-woven fabric, and has a heat retention property of 10% or more and less than 40%, preferably 20% or more and 40% or less in a non-stretched state. The non-woven fabric used for the inseam region 8 is not particularly limited, but a non-woven fabric such as a thermal bond non-woven fabric and a spun-bonded non-woven fabric may be used, and a non-woven fabric made of a thermoplastic resin such as polypropylene, polyester or polyethylene may be used. can. When these non-woven fabrics are used, the basis weight thereof may be 10 g / m ² or more and 25 g / m ² or less, and more preferably 15 g / m ² or more and 20 g / m ² or less. In addition, in order to improve the adhesion of the leg opening 5 to the wearer at both ends of the inseam region 8, an inseam side elastic elastic member 81 may be provided, which together with the non-woven fabric of the inseam region 8 are leg gathers. May be configured.

Hereinafter, the present invention will be described in detail with reference to examples. The present invention is not limited to the examples shown below.

<Example 1>
A two-layer polypropylene spunbonded non-woven fabric having a basis weight of 18 g / m ² and a polyurethane thread rubber of 1,240 dtex were used to form an anterior waist circumference region and a posterior waist circumference region.

A total of 18 hot melt adhesives were placed between two layers of polypropylene spunbonded non-woven fabric with a basis weight of 18 g / m ² , 5 on the front side and 13 on the back side at 7 mm intervals. Glued through. This was constructed as a laminated body of the waist circumference region, and the dimensions of the front waist circumference region were 560 mm in width, 50 mm in length, and 28,000 mm in area ² , and the dimensions of the rear waist circumference region were 560 mm in width, 95 mm in length, and area. It was 53,200 mm ² .

Between each of the two layers of 15 g / m ² polypropylene spunbonded non-woven fabric, an opening with an opening ratio of 11.4%, a dimension of 0.15 mm in the expansion and contraction direction, and a dimension of 0.36 mm in the direction orthogonal to the expansion and contraction direction is formed in the expansion and contraction direction. A urethane film with a thickness of 20 μm provided at a distance of 0.52 mm and 0.35 mm in the direction orthogonal to the expansion / contraction direction is laminated in a 250% stretched state, and the pattern extends linearly in the direction orthogonal to the expansion / contraction direction over the entire region. A composite elastic sheet was formed by sonic bonding. This was constructed as a composite elastic sheet of the lower abdomen region and the buttocks region, and the dimensions of the lower abdomen region were 560 mm in width, 150 mm in length, and 84,000 mm in area ² , and the dimensions of the buttocks region were 560 mm in width and 135 m in length. The area was 75,600 mm ² . The breathability of this composite stretchable sheet measured in accordance with JIS L 1096-A (Frazier method) is 43.2 cm ³ / cm ² seconds in the non-stretchable state and 89.4 cm ³ / in the 150% stretchable state. It was cm ² seconds.

For the inseam region, a 17 g / m ² polypropylene non-woven fabric was used as a single layer.

The laminated body of the anterior waist area, the anterior waist area, the lower abdomen area, the inseam area, the buttocks area, the posterior waist area, and the posterior waist area are integrated by ultrasonic sealing and hot melt to form an exterior body. This was laminated with a separately manufactured interior pad to manufacture a pants-type absorbent article.

<Comparative Example 1>
A laminate used for the anterior girth region and the posterior girth region is used as a unit for the anterior girth region and the lower abdomen region, and the posterior girth region and the buttocks region, respectively, without using the elastic composite sheet for the lower abdomen region and the buttocks region. A pants-type absorbent article was produced in the same manner as in Example 1 except for the above-mentioned points. A total of 28 polyurethane yarn rubbers were arranged at 7 mm intervals, 14 on the front side and 14 on the rear side.

<Comparative Example 2>
Pants-type absorbent article in the same manner as in Example 1 except that the elastic composite sheet in the lower abdomen region and the buttocks region was not used and two layers of polypropylene spunbonded non-woven fabric of 18 g / m ² were laminated and used. Manufactured.

<Evaluation>
The heat retention of the anterior girth region, the posterior girth region, the lower abdomen region, the buttocks region, and the inseam region was measured by the method described in the present specification, and the obtained pants-type absorbent article was worn on 20 monitors. We asked them to make a sensory evaluation of the feeling of stuffiness, fit, and comfort. Regarding the sensory evaluation, both evaluations were conducted by selecting "good" and "bad", and evaluated according to the following criteria.
〇: When "good" is 12 or more and 20 or less △: When "good" is 5 or more and 11 or less ×: When there is no "good" or 1 or more and 4 or less

The results are shown in Table 1 below.

As is clear from Table 1, by adjusting the heat retention of the waist area, the lower abdomen area, the buttocks area, and the inseam area, it is possible to provide a pants-type absorbent article having a feeling of stuffiness, a feeling of fit, and comfort. Was done.

1 Pants-type absorbent article 2 Interior pad 3 Exterior 4 Waist opening 5 Leg opening 6 Front side 61 Front waist area 62 Front waist area 63 Lower abdomen area 7 Posterior 71 Rear waist area 72 Posterior waist area 73 Waist area 731 Waist area elastic elastic member 8 Inseam area 81 Inseam side elastic elastic member 9 Side seal

Claims (6)

A liquid-permeable top sheet, a liquid-impermeable back sheet, and an interior pad having an absorber sandwiched between the top sheet and the back sheet,
A pants-type absorbent article composed of an exterior body laminated on the back sheet side of an interior pad and formed by laminating a non-woven fabric and an elastic material.
The exterior body is composed of a waist area, a waist area, a lower abdominal area or a buttocks area, and an inseam area from the waist to the crotch of the wearer.
The heat retention of the exterior body is higher in the waist circumference region than in the lower abdomen region and buttocks region, and higher in the lower abdomen region and buttocks region than in the inseam region.
The waist circumference region is a laminated body in which an elastic elastic member is sandwiched between two layers of non-woven fabric, and the heat retaining property when the laminated body is stretched by 182% in the stretching direction is 50% or more and less than 70%.
The lower abdomen region and the buttocks region are composed of a composite elastic sheet in which at least two layers of non-woven fabric and an elastic film sandwiched between them are integrated by heat fusion or ultrasonic adhesion, and the composite elastic sheet is expanded and contracted. The heat retention when extended by 182% in the direction is 40% or more and less than 60%.
The inseam region is composed of one layer or two layers of non-woven fabric, and has a heat retention property of 10% or more and less than 40% in a non-stretched state.
The interior pad is a pants-type absorbent article joined to the body side surface of the exterior body from the lower abdomen region and the buttocks region to the inseam region. The waist circumference region includes a front waist circumference region and a posterior waist circumference region.
The area of the front girth region is smaller than the area of the rear girth region, and the number of elastic elastic members provided in the front girth region is smaller than the number of elastic elastic members provided in the rear girth region. , The pants-type absorbent article according to claim 1. The pants-type absorbent article according to claim 1 or 2, wherein the elastic film constituting the composite elastic sheet of the lower abdomen region and the buttocks region has a plurality of openings in a plan view. The opening has a short side of 0.1 mm or more and 0.3 mm or less along the stretching direction of the stretchable film and a long side of 0.3 mm or more and 0.7 mm or less along the direction orthogonal to the stretching direction. , And the adjacent openings are separated from each other by 0.5 mm or more and 1.0 mm or less along the expansion / contraction direction, and 0.3 mm or more and 0.7 mm or less along the direction orthogonal to the expansion / contraction direction. The pants-type absorbent article according to claim 3, which is separated. The composite stretchable sheet is any one of claims 1 to 4, which has a breathability of 20 cm ³ / cm ² · sec or more, which is measured according to JIS L 1096-A (Frazil method) in a non-stretched state. Pants-type absorbent article described in. ^{1 _} The pants-type absorbent article according to any one of 5 to 5.

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