JP2015128573A - Underpants type absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underpants type absorbent article improving gas permeability of an outer wrapper body, reducing stuffiness of the inside, hardly evoking an anxiety about leakage, and improving availability.SOLUTION: An outer wrapper body 2 of an underpants type absorbent article 1A includes a plurality of elastic members 23 intermittently disposed between an inner layer sheet member 21 and an outer layer sheet member 22 in the vertical direction X, with their elongated state in the lateral direction Y. The inner layer sheet member 21 includes a plurality of inner apertures 25, while the outer sheet member 22 includes a plurality of outer apertures 26. The outer wrapper body 2 is formed by mixingly disposing the inner apertures 25 and the outer apertures 26 at positions not to be overlapped with each other. The total number of the inner apertures 25 and outer apertures 26 disposed at an upper area with respect to the elastic members 23 is equal to the total number of the inner apertures 25 and outer apertures 26 disposed at a lower area.

Description

  The present invention relates to a pants-type absorbent article such as a pants-type disposable diaper.

  Generally, a pants-type disposable diaper includes an exterior body that forms an outer shape of a diaper, and an absorbent main body that has an absorbent body fixed inside the exterior body. From the viewpoint of improving the breathability of the exterior body, reducing the stuffiness inside the disposable diaper when worn, and enhancing the feeling of use of the disposable diaper, for example, Patent Document 1 discloses a vent hole that is a through hole in the exterior body. A pants-type disposable diaper provided with is described. According to the pants-type absorbent article described in Patent Document 1, the air permeability of the exterior body is improved.

  As a technique different from this, the present applicant has previously proposed a pants-type disposable diaper in which an exterior body is provided with an auxiliary opening (Patent Document 2). According to the pants-type disposable diaper described in Patent Document 2, even a person who has difficulty with fingers of the hand can insert the finger into the auxiliary opening and wear it alone.

JP-A-3-251245 JP 2004-267335 A

  However, the pants-type disposable diaper described in Patent Document 1 has a through-hole in the exterior body, so that the user may be worried about leaks and may cause leaks. .

  Moreover, the underpants type disposable diaper described in Patent Document 2 is a unique diaper that can be worn alone by a handicapped person, and has an auxiliary opening through which a finger can be inserted. As described above, Patent Document 2 does not describe any improvement on leakage.

  Therefore, this invention is providing the underpants type absorbent article which can eliminate the fault which the prior art mentioned above has.

  The present invention includes an exterior body having an abdominal region disposed on the abdomen side of the wearer when worn and a backside region disposed on the back side of the wearer when worn, and a vertically long body fixed to the inside of the exterior body. An absorptive main body having an absorbent body, and both side edges of the ventral region and the dorsal region are joined to form a pair of side seal portions, a waist opening portion, and a pair of leg openings. The pants-type absorbent article, wherein the exterior body extends in the lateral direction of the pants-type absorbent article between the inner layer sheet member on the skin facing surface side and the outer layer sheet member on the non-skin facing surface side. The elastic member arranged in a state is formed by being intermittently arranged in the longitudinal direction of the pant-type absorbent article, and the inner layer sheet member has a plurality of inner opening portions, The outer layer sheet member has a plurality of outer opening portions, A side opening and the outside opening are mixed and formed at positions where they do not overlap each other. Focusing on one elastic member, the elastic member is sandwiched between the pant-type absorption members. The total number of the inner opening and the outer opening disposed in the upper region in the longitudinal direction of the adhesive article, and the inner opening and the outer opening disposed in the lower region in the longitudinal direction. A pants-type absorbent article having the same total number is provided.

  According to the present invention, the air permeability of the exterior body is improved, the internal stuffiness is reduced, the anxiety about leakage is hardly recalled, and the usability is improved.

FIG. 1 is a perspective view showing a wearing state of a pants-type disposable diaper according to the first embodiment of the present invention. FIG. 2 is a view for explaining an assembled state of the pants-type disposable diaper shown in FIG. 1. FIG. 3 is a plan view of the underpants-type disposable diaper shown in FIG. 1 as viewed from the outer layer sheet member side of the exterior body in an expanded state. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a partial plan view of the pants-type disposable diaper according to the second embodiment of the present invention as viewed from the outer layer sheet member side of the exterior body.

Hereinafter, the underpants type absorbent article of the present invention will be described based on the preferred first embodiment with reference to the drawings.
The pants-type disposable diaper 1A of the first embodiment (hereinafter also referred to as “diaper 1A”) is, as shown in FIG. 1, a ventral region A disposed on the abdomen side of the wearer when worn and a wearer when worn. The exterior body 2 which has the back side area | region B distribute | arranged to the back side of this, and the rectangular-shaped absorptive main body 3 which has the absorber 33 fixed inside the exterior body 2 are comprised, The edge portions 2a, 2a and the side edge portions 2b, 2b of the back region B are joined to form a pair of side seal portions 5, 5, a waist opening WO and a pair of leg openings LO, LO. . In the diaper 1 </ b> A, the exterior body 2 is formed from the ventral region A to the dorsal region B, and has a crotch region C between the ventral region A and the dorsal region B.
In the present specification, the “skin facing surface” is a surface arranged on the skin side of the wearer when wearing, among the front and back surfaces of each member such as a surface sheet 31 to be described later constituting the absorbent main body 3, The “non-skin facing surface” is a surface that is directed to the side opposite to the skin side of the wearer when worn, among the front and back surfaces of each member such as a surface sheet 31 described later that constitutes the absorbent main body 3.
The “X direction” shown in each figure is a direction parallel to the center line CL1 extending in the longitudinal direction of the absorbent main body 3. The “Y direction” shown in each figure is a direction orthogonal to the center line CL1 and is also the same direction as the lateral direction of the absorbent main body 3.

  As shown in FIGS. 1 and 2, an absorbent main body 3 is fixed inside the exterior body 2. As shown in FIG. 2, the absorbent main body 3 of the diaper 1 </ b> A has a substantially oblong rectangular shape in the X direction, a liquid-permeable top sheet 31, and a liquid-impermeable (including water-repellent) back sheet. 32, and an absorbent body 33 interposed between both sheets 31 and 32. In the diaper 1A, the absorber 33 has a rectangular shape that is long in the vertical direction (X direction). As shown in FIG. 2, side cuffs 34 and 34 made of a liquid-impermeable or water-repellent and breathable material are provided on both sides along the longitudinal direction (X direction) of the absorbent main body 3. It has been. In the vicinity of the free end of each side cuff 34, a three-dimensional gather forming elastic member 35 is arranged in a state of extending in the vertical direction (X direction). When the diaper is worn, the free end portion of the side cuff 34 rises due to the contraction of the elastic member 35 for forming the three-dimensional gather, so that a so-called three-dimensional gather is formed, and the outflow of body fluid in the lateral direction (Y direction) is prevented.

  The exterior body 2 has an elastic member 23 disposed in a longitudinal direction (Y direction) between the inner layer sheet member 21 on the skin facing surface side and the outer layer sheet member 22 on the non-skin facing surface side. In the direction (X direction), a plurality of lines are intermittently arranged. In the diaper 1A, the inner layer sheet member 21 is composed of one sheet, and the outer layer sheet member 22 is also composed of one sheet. As shown in FIG. 2, the inner layer sheet member 21 and the outer layer sheet member 22 are bound inward in the central portion in the longitudinal direction (X direction), and are formed in the same shape and size. In the diaper 1 </ b> A, the leg elastic member 24 is disposed between the inner layer sheet member 21 and the outer layer sheet member 22 in a state of extending along the constriction at the center.

  As shown in FIG. 2, the outer package 2 of the diaper 1 </ b> A includes a plurality of layers between an inner layer sheet member 21 to which the absorbent main body 3 is directly fixed and an outer layer sheet member 22 disposed on the outer surface side of the inner layer sheet member 21. The elastic member 23 and the leg elastic member 24 are arranged, and the inner layer sheet member 21 or the outer layer sheet member 22 is bonded to the entire inner surface by an adhesive applied in a spiral or stripe shape. Yes.

  As shown in FIGS. 2 and 3, the exterior body 2 formed as described above is bound inward in the central portion in the longitudinal direction (X direction). In the diaper 1A, the inner surfaces of both side edges 2a, 2a on the ventral region A side of the outer package 2 and the inner surfaces of both side edges 2b, 2b on the back region B side of the outer package 2 are overlapped with each other, A pair of side seal portions 5 and 5 are formed, and a waist opening WO and a pair of leg openings LO and LO shown in FIG. 1 are formed.

  The exterior body 2 will be described in detail. The elastic members 23 arranged in the ventral region A and the dorsal region B are intermittently arranged in the longitudinal direction (X direction) outward from the absorbent main body 3. The waist elastic member 231 and a plurality of waistline elastic members 232 intermittently arranged below the waist elastic member 231 in the longitudinal direction (X direction). Since the waist elastic member 231 and the waistline elastic member 232 are arranged in an expanded state between the inner layer sheet member 21 and the outer layer sheet member member 22 constituting the outer package 2, the outer package 2 of the diaper 1A includes: A waist elastic region (waist gather) and a waistline elastic region (waistline gather) are formed. In addition, it is preferable that the waistline elastic member 232 is finely divided at a position where it overlaps the absorbent main body 3 and no longer contracts. Moreover, the leg elastic member 24 is arranged in the extended state on the outer package 2 of the diaper 1A, thereby forming a pair of annular leg elastic regions (leg gathers).

  In addition, the inner layer sheet member 21 constituting the exterior body 2 has a plurality of inner opening portions 25, and the outer layer sheet member 22 has a plurality of outer opening portions 26. As shown in FIGS. 1 and 3, the exterior body 2 is formed so that the inner opening portion 25 and the outer opening portion 26 are mixed and arranged so as not to overlap each other. In the diaper 1A, the inner opening portion 25 of the inner layer sheet member 21 and the outer opening portion 26 of the outer layer sheet member 22 are arranged in a mixed state in the entire region from the ventral region A to the dorsal region B. In plan view, the inner opening portion 25 and the outer opening portion 26 are arranged so as not to overlap each other. As described above, in the diaper 1A, the inner opening portion 25 and the outer opening portion 26 are arranged in the entire region from the ventral region A to the dorsal region B, but the air permeability of the exterior body 2 is improved. From the viewpoint of reducing the stuffiness inside the diaper 1 </ b> A, at least the back region B may be disposed. Here, “arranged at a position where they do not overlap” means not only the case where the inner opening portion 25 and the outer opening portion 26 do not have a portion that overlaps at all, but also a portion that has a portion that overlaps. Is also included. In the case of having a partially overlapping portion, the number of the inner opening portion 25 and the outer opening portion 26 that are partially overlapped with respect to the total number of the inner opening portion 25 and the outer opening portion 26. Is less than 20%.

  The inner opening portion 25 and the outer opening portion 26 will be described in further detail. As shown in FIG. 3, the exterior body 2 is formed by alternately arranging the inner opening portions 25 and the outer opening portions 26. ing. Specifically, in the diaper 1 </ b> A, in the ventral region A and the dorsal region B of the exterior body 2, the elastic members 23 that are extended in the horizontal direction (Y direction) are intermittently in the vertical direction (X direction). The crotch region C of the exterior body 2 is a non-elastic member arrangement region in which the elastic member 23 that is stretched in the lateral direction (Y direction) is not arranged. In each of the ventral region A and the back region B, which are elastic member arrangement regions, the inner opening portions 25 and the outer opening portions 26 are alternately arranged in the vertical direction (X direction) and do not overlap each other. They are arranged alternately in the horizontal direction (Y direction) and do not overlap each other. In the crotch region C, which is a non-elastic member arrangement region, the inner opening portion 25 and the outer opening portion 26 are alternately arranged in the lateral direction (Y direction) so as not to overlap each other. 3 is arranged at a position which is line-symmetric with respect to a center line CL2 extending in the horizontal direction. Thus, the inner opening portion 25 and the outer opening portion 26 are respectively provided with the first inner opening portion 251 and the first outer opening arranged in the ventral region A and the back region B, which are elastic member placement regions. It has a hole 261 and a second inner opening 252 and a second outer opening 262 arranged in the crotch region C which is a non-elastic member arrangement region.

  Further, paying attention to one elastic member 23 stretched in the lateral direction (Y direction), the inner opening portion 25 disposed in the upper region UT in the vertical direction (X direction) with the elastic member 23 interposed therebetween. The total number of the outer opening portions 26 and the total number of the inner opening portions 25 and the outer opening portions 26 arranged in the lower region DT in the vertical direction (X direction) with the elastic member 23 interposed therebetween are the same. is there. Specifically, the one elastic member 23 of interest is selected from a plurality of waist elastic members 231 and a plurality of waistline elastic members 232 arranged in the ventral region A and the back region B, respectively. it can. Moreover, the inner side opening part 25 and the outer side opening part 26 which are said here are the 1st inner side opening part 251 and the 1st outer side which were distribute | arranged to the abdominal side area | region A and back side area | region B which are elastic member arrangement | positioning areas, respectively. The opening 261 is meant. In the diaper 1A, for example, as shown in FIG. 3, paying attention to one waistline elastic member 232A selected from a plurality of waist elastic members 231 and waistline elastic members 232, the waistline elastic members 232A are The total number of first inner apertures 251 and first outer apertures 261 disposed in the upper region UT, and the first inner apertures 251 and first outer apertures disposed in the lower region DT. The total number of parts 261 is the same. Here, the total number is the same, the total number of the inner opening portion 25 and the outer opening portion 26 arranged in the upper region UT in the vertical direction (X direction) sandwiching the elastic member, and the elastic member 23, It means that the ratio of the total number of inner opening portions 25 and outer opening portions 26 arranged in the lower region DT in the vertical direction (X direction) is in the range of 4: 6 to 6: 4. Such a relationship is formed in at least one elastic member 23 of the plurality of elastic members 23, and is formed in the plurality of elastic members 23 from the viewpoint of obtaining stress without bias. It is more preferable that each elastic member 23 is formed. The total number of first inner opening portions 251 and first outer opening portions 261 arranged in the upper region UT, and the first inner opening portions 251 and first outer opening portions 261 arranged in the lower region DT. Specifically, the total number is preferably 10 or more and 80 or less, and more preferably 20 or more and 60 or less.

  In each of the ventral region A and the dorsal region B, which are elastic member placement regions, as shown in FIG. 3, the first inner opening is provided between the elastic members 23 arranged intermittently in the vertical direction (X direction). The holes 251 and the first outer openings 261 are alternately arranged one by one. In addition, from the viewpoint that the elastic member 23 does not cause skin trouble without touching the wearer's skin, at least the first inner opening 251 on the skin facing surface side is intermittently arranged in the vertical direction (X direction). The elastic member 23 may be formed so as not to touch the skin directly.

In the diaper 1A, as shown in FIG. 3, the second inner opening portion 252 and the second outer opening portion 262 arranged in the crotch region C, which is a non-elastic member arrangement region, have an opening area that is elastic. It is larger than the opening area of the 1st inner side opening part 251 and the 1st outer side opening part 261 which were distribute | arranged to the abdominal side area | region A and back side area | region B which are member arrangement | positioning areas, respectively. Thus, the opening area of the 1st inner side opening part 251 and the 1st outer side opening part 261 in an elastic member arrangement | positioning area | region is the 2nd inner side opening part 252 and 2nd outer side opening part in an inelastic member arrangement | positioning area | region. Since it is smaller than the opening area of 262, anxiety about leakage is hardly recalled, and air permeability is improved. From the viewpoint of further achieving this effect, the second inner opening 252 in the non-elastic member arrangement region with respect to the opening area (S1) of the first inner opening 251 and the first outer opening 261 in the elastic member arrangement region, and The ratio (S2 / S1) of the opening area (S2) of the second outer opening 262 is preferably 2 or more and 500 or less, and more preferably 5 or more and 100 or less. Further, in the elastic member arrangement region (ventral region A and back region B), the opening area (S3) of the first inner opening 251 is the opening area (S4) of the first outer opening 261. The larger one is more preferable because air permeability can be ensured without causing anxiety about leakage caused by enlarging the inside. The ratio (S3 / S4) of the opening area (S3) of the first inner opening 251 to the opening area (S4) of the first outer opening 261 is preferably 2 or more and 100 or less. More preferably, it is 50 or less. Furthermore, in the non-elastic member arrangement region (inseam region C), the opening area (S5) of the second inner opening portion 252 may be larger than the opening area (S6) of the second outer opening portion 262. Preferably, the ratio (S5 / S6) of the opening area (S5) of the second inner opening 252 to the opening area (S6) of the second outer opening 262 is 2 or more and 30 or less, More preferably, it is 2 or more and 10 or less. Specifically, the average opening area of the first inner opening 251 and the first outer opening 261 in the elastic member arrangement region is preferably 1 mm ² or more and 100 mm ² or less, and in the non-elastic member arrangement region. The average opening area of the second inner opening 252 and the second outer opening 262 is preferably 20 mm ² or more and 1500 mm ² or less.

  The shape of the inner opening portion 25 and the outer opening portion 26 in a plan view includes a geometric pattern shape such as a circular shape, a polygonal shape, and an elliptical shape, and a shape that represents size information. From the viewpoint of forming vertical wrinkles in the region, the shape is preferably long in the vertical direction (X direction). Moreover, as a shape which planarly viewed the outer side opening part 26, it is preferable that it is a design pattern, such as a character shape, from a viewpoint of improving the external appearance of the diaper 1A. In the diaper 1 </ b> A, the shapes of the first inner opening 251 and the first outer opening 261 disposed in the ventral region A and the dorsal region B, which are elastic member arrangement regions, are longitudinal (X direction). The shape of the second inner opening 252 arranged in the crotch region C, which is a non-elastic member arrangement region, is the first inner opening 251 and the first outer opening 261. It is formed in an ellipse shape that is longer in the vertical direction (X direction) than the opening area of. Further, the shape of the second outer opening portion 262 arranged in the crotch region C, which is an inelastic member arrangement region, is larger than the opening areas of the first inner opening portion 251 and the first outer opening portion 261. It is formed in the pattern shape of the handle.

  The inner opening portion 25 is preferably formed in advance by melting, cutting out, or punching out the inner layer sheet member 21 constituting the exterior body 2. Similarly, the outer opening 26 is preferably formed in advance by melting, cutting out, or punching out the outer layer sheet member 22 constituting the exterior body 2.

The forming material of the pants-type disposable diaper 1A of the first embodiment will be described.
As the outer layer sheet member 22 and the inner layer sheet member 21 constituting the exterior body 2, any material can be used without particular limitation as long as it is normally used for absorbent articles such as disposable diapers. For example, as the outer layer sheet member 22 and the inner layer sheet member 21, a water-repellent nonwoven fabric or the like can be used.

  As the sheets forming the top sheet 31, the back sheet 32, the absorber 33 and the side cuffs 34 constituting the absorbent main body 3, respectively, as long as they are usually used for absorbent articles such as disposable diapers, in particular, Can be used without limitation. For example, a hydrophilic and liquid-permeable nonwoven fabric can be used as the top sheet 31, and a liquid-impermeable or water-repellent resin film or a laminate of a resin film and a nonwoven fabric is used as the back sheet 32. be able to. As the absorbent body 33, an absorbent core made of absorbent polymer particles and a fiber material and covered with tissue paper can be used. As the sheet for forming the side cuffs 34, an elastic film, a nonwoven fabric, a woven fabric, or a laminated sheet thereof can be used.

  The waist elastic member 231, the waistline elastic member 232, the leg elastic member 24, and the elastic member 35 for forming a three-dimensional gather can be used without particular limitation as long as they are usually used for absorbent articles such as disposable diapers. . For example, a thread-like stretchable material made of natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, polyethylene-α olefin copolymer such as ethyl acrylate-ethylene, or the like can be used.

  For the bonding of the side seal portion 5, an adhesive used for absorbent articles such as disposable diapers, or a fusion means such as heat embossing or ultrasonic embossing is usually used. Similarly, fixing of the absorbent main body 3 and the inner layer sheet member 21 of the exterior body 2 and fixing of the top sheet 31, the back sheet 32, and the side cuffs 34 are usually used for absorbent articles such as disposable diapers. Fusing means such as heat embossing and ultrasonic embossing are used.

The effect at the time of using the underpants type disposable diaper 1A of 1st Embodiment of this invention mentioned above is demonstrated.
In the diaper 1A, as shown in FIG. 1, the inner layer sheet member 21 constituting the outer package 2 has an inner opening portion 25 and the outer layer sheet member 22 has an outer opening portion 26. The air permeability of the body 2 is improved, the internal stuffiness when the diaper 1A is worn is reduced, and the feeling of use is improved. Further, as shown in FIG. 1, the inner opening portion 25 of the inner layer sheet member 21 and the outer opening portion 26 of the outer layer sheet member 22 are mixed and arranged at positions where they do not overlap each other as shown in FIG. Thus, the outer package 2 is formed. Therefore, since the wearer's skin cannot be seen through the outer opening portion 26 while the diaper 1A is worn, it is difficult for the user to recall anxiety about leakage, and the usability is improved. In particular, in the diaper 1A, since the inner opening portions 25 and the outer opening portions 26 are alternately arranged, the appearance is also improved. In particular, in the diaper 1 </ b> A, the shape of the second outer opening portion 262 arranged in the crotch region C that is an inelastic member arrangement region is the opening area of the first inner opening portion 251 and the first outer opening portion 261. Since it is formed in a larger star-shaped symbol shape, the appearance is further improved.

  Further, in the diaper 1A, as shown in FIG. 3, paying attention to one elastic member 23 stretched in the lateral direction (Y direction), the elastic member 23 is disposed in the upper region UT. The total number of the inner opening portions 25 and the outer opening portions 26 is the same as the total number of the inner opening portions 25 and the outer opening portions 26 arranged in the lower region DT. Therefore, the rigidity of the sheet is not biased above and below the elastic member 23, and stress can be obtained uniformly.

  Moreover, in the diaper 1A, as shown in FIG. 1, the 1st inner side opening part 251 by the side of a skin opposing surface is distribute | arranged between the elastic members 23 distribute | arranged intermittently to the vertical direction (X direction). In addition, since the elastic member 23 is formed so as not to directly touch the skin, it is difficult for the elastic member 23 to contact the wearer's skin and to cause skin trouble, and the feeling of use is improved.

  Moreover, in diaper 1A, as shown in FIG. 1, the 1st inner side opening part 251 and the 1st outer side opening part 261 which were distribute | arranged to the abdominal side area | region A and back side area | region B which are elastic member arrangement | positioning areas, respectively. The shape is formed in an elliptical shape that is long in the vertical direction (X direction), and the shape of the second inner opening 252 disposed in the crotch region C that is an inelastic member placement region is also in the vertical direction (X direction). It is formed in a long oval shape. Therefore, it is easy to induce the formation of wrinkles in the length direction in the elastic member arrangement region, and it is difficult to extend in the length direction in the non-elastic member arrangement region, and the effect of improving the wearability is achieved.

Next, a pants-type disposable diaper 1B (hereinafter also referred to as “diaper 1B”) according to a second embodiment of the present invention will be described with reference to FIG.
About the diaper 1B of 2nd Embodiment, a different point from the diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably.

  In the diaper 1B, as shown in FIG. 5, the inner opening 25 and the outer opening 26 are more open on the side of the absorbent main body 3 than on the side seal 5 side. The hole area is small. More specifically, in the outer package 2 of the diaper 1B, the inner opening portion 25 of the inner layer sheet member 21 and the outer opening portion 26 of the outer layer sheet member 22 are located behind the ventral region A excluding the absorbent main body 3. In the region over the region B, they are arranged in a mixed state, and are arranged at positions that do not overlap each other in plan view.

  Specifically, in the diaper 1B, as shown in FIG. 5, the first inner opening 251 and the first outer opening arranged in the ventral region A and the dorsal region B, which are elastic member placement regions, respectively. The shape of the portion 261 is formed in an elliptical shape that is long in the vertical direction (X direction), and the second outer opening portion 262 and the second inner opening portion disposed in the crotch region C that is an inelastic member arrangement region The shape of 252 is formed in an elliptical shape that is longer in the vertical direction (X direction) than the opening area of the first inner opening 251 and the first outer opening 261.

  In the diaper 1 </ b> B, as shown in FIG. 5, in the waist elastic region (waist gather) in which the waist elastic member 231 is disposed in each of the ventral region A and the back region B which are elastic member arrangement regions, The openings 251 and the first outer openings 261 are alternately arranged in the vertical direction (X direction) and do not overlap each other, and are alternately arranged in the horizontal direction (Y direction) and overlap each other. It is a position that does not become. And the 1st inner side opening part 251 and the 1st outer side opening part 261 are horizontal direction toward the centerline CL1 side extended in the absorptive main body 3 side, ie, the vertical direction (X direction), from the side seal part 5 side. (Y direction) The opening area gradually decreases as it goes inward.

  Moreover, in the diaper 1B, as shown in FIG. 5, in the waistline elastic region (gumbo gather) in which the waistline elastic member 232 in each of the abdominal region A and the backside region B, which are elastic member placement regions, is arranged. The first inner opening 251 and the first outer opening 261 are not arranged in the region overlapping with the absorbent main body 3, and in the vertical direction (X direction) in the region excluding the region overlapping with the absorbent main body 3. The positions are alternately arranged so as not to overlap each other, and the positions are also alternately arranged in the horizontal direction (Y direction) so as not to overlap each other. And the 1st inner side opening part 251 and the 1st outer side opening part 261 are horizontal direction toward the centerline CL1 side extended in the absorptive main body 3 side, ie, the vertical direction (X direction), from the side seal part 5 side. (Y direction) The opening area gradually decreases as it goes inward.

  Moreover, in the diaper 1B, as shown in FIG. 5, the 2nd inner side opening part 252 and the 2nd outer side opening part 262 which were distribute | arranged to the crotch area C which is an inelastic member arrangement | positioning area | region are the absorbent main body 3, and It is not arranged in the overlapping area, and in the area excluding the area overlapping with the absorbent main body 3, it is alternately arranged in the vertical direction (X direction) and does not overlap each other, and in the horizontal direction (Y direction) Are arranged alternately so that they do not overlap each other. The second inner opening portion 252 and the second outer opening portion 262 are laterally directed from the side seal portion 5 side toward the absorbent main body 3 side, that is, toward the center line CL1 side extending in the vertical direction (X direction). (Y direction) The opening area gradually decreases as it goes inward.

The effect at the time of using the diaper 1B of 2nd Embodiment of this invention mentioned above is demonstrated.
About the effect of the diaper 1B of 2nd Embodiment, a different point from the effect of the diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A of 1st Embodiment, and description of the effect of the pants type disposable diaper 1A of 1st Embodiment is applied suitably.

  As for the diaper 1B of 2nd Embodiment, as shown in FIG. 5, as for the inner side opening part 25 and the outer side opening part 26, the thing which exists in the absorptive main body 3 side exists in the side seal part 5 side. Compared to the above, the opening area is small. Therefore, it is difficult for the user to recall anxiety about leakage, and the feeling of use is improved.

The pants-type absorbent article of the present invention is not limited to the diaper 1A of the first embodiment and the diaper 1B of the second embodiment described above, and can be appropriately changed.
For example, as shown in FIGS. 3 and 5, the inner opening 25 and the outer opening 26 of the diapers 1 </ b> A and 1 </ b> B described above are regularly arranged alternately in the vertical direction (X direction) and do not overlap each other. It is a position that is alternately arranged in the horizontal direction (Y direction) and does not overlap with each other, but may be a position that does not overlap with each other.

  In the diapers 1A and 1B described above, as shown in FIG. 2, the inner layer sheet member 21 is formed from a single sheet, but may be formed from a plurality of sheets. Moreover, although the outer layer sheet member 22 is also formed from one sheet, the outer layer sheet member 22 may be similarly formed from a plurality of sheets.

  In the diapers 1A and 1B described above, as shown in FIGS. 3 and 5, the second inner opening 252 and the second outer opening 262 are arranged in the crotch region C which is a non-elastic member arrangement region. The opening area is larger than the opening areas of the first inner opening portion 251 and the first outer opening portion 261 disposed in the ventral region A and the back region B, which are elastic member placement regions, respectively. However, the same opening area may be uniform. In the diapers 1A and 1B described above, in the ventral region A and the dorsal region B, which are elastic member placement regions, the opening area (S3) of the first inner opening 251 is the first outer opening. The opening area of the portion 261 is larger than the opening area (S4), but the opening area of the first inner opening portion 251 and the opening area of the first outer opening portion 261 may be equal. Further, in the crotch region C, which is an elastic member arrangement region, the opening area (S5) of the second inner opening 252 is larger than the opening area (S6) of the second outer opening 262. However, the opening area of the second inner opening 252 and the opening area of the second outer opening 262 may be equal.

  Moreover, in the diaper 1B mentioned above, as shown in FIG. 5, the 1st inner side opening part 251 and the 1st outer side opening part 261 are the absorptive main body 3 side, ie, the vertical direction (X The opening area is gradually reduced toward the inner side in the lateral direction (Y direction) toward the center line CL1 extending in the direction), but the opening area may be formed stepwise. Similarly, the second inner opening portion 252 and the second outer opening portion 262 may be formed so that the opening area is gradually reduced from the side seal portion 5 side toward the absorbent main body 3 side.

  Moreover, in the diaper 1B mentioned above, as shown in FIG. 5, the inner side opening part 25 and the outer side opening part 26 are horizontal direction (Y direction) toward the absorptive main body 3 side from the side seal part 5 side. The opening area is formed smaller only toward the inward direction, but the opening area may be formed smaller toward the inner side in the vertical direction (X direction), and the vertical direction (X direction) and the horizontal direction ( The opening area may be smaller as it goes inward (Y direction).

The pant-type absorbent article in the present invention is not limited to a pant-type disposable diaper, and may be a pant-type sanitary napkin.
The description omitted in one embodiment described above and the requirements of only one embodiment can be applied to other embodiments as appropriate, and the requirements in each embodiment can be appropriately changed between the embodiments. Can be substituted.

  The following pant-type absorbent articles are disclosed with respect to the embodiment described above.

<1>
An exterior body having an abdominal region disposed on the abdomen side of the wearer when worn and a back side region disposed on the back side of the wearer when worn, and a vertically long absorbent body fixed to the inside of the exterior body A pant-type absorption comprising a pair of side seal portions, a waist opening portion and a pair of leg opening portions. A sex product,
The outer body has an elastic member disposed between the inner layer sheet member on the skin facing surface side and the outer layer sheet member on the non-skin facing surface side in a state of extending in the lateral direction of the pant-type absorbent article, In the longitudinal direction of the pant-type absorbent article, a plurality of intermittently arranged,
The inner layer sheet member has a plurality of inner opening portions, and the outer layer sheet member has a plurality of outer opening portions,
The exterior body is formed by being arranged at a position where the inner opening and the outer opening are mixed and do not overlap each other,
The total number of the inner hole portions and the outer hole portions disposed in the upper region in the vertical direction of the pant-type absorbent article, and the lower region in the vertical direction, with each elastic member interposed therebetween. A pants-type absorbent article in which the total number of the inner opening and the outer opening is the same.

<2>
The pants type absorptive according to <1>, wherein the exterior body is formed so as to be disposed at a position where the inner opening portion and the outer opening portion are mixed and do not overlap each other at least in the back region. Goods.
<3>
The pants-type absorbent article according to <1> or <2>, wherein the exterior body is formed by alternately arranging the inner opening portions and the outer opening portions.
<4>
In each of the ventral region and the dorsal region, which are elastic member placement regions, the inner opening portion and the outer opening portion are alternately arranged in the vertical direction (X direction) and do not overlap each other. The underpants-type absorbent article according to any one of <1> to <3>, wherein the pants-type absorbent article is alternately arranged in the horizontal direction (Y direction) and does not overlap each other.
<5>
In the crotch region C, which is a non-elastic member arrangement region, the inner opening portion and the outer opening portion are alternately arranged in the lateral direction (Y direction) so as not to overlap each other. The underpants-type absorbent article according to any one of the above items <1> to <4>, which is arranged at a position that is line-symmetric with respect to a center line CL2 extending in the lateral direction of the main body.
<6>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
In each of the ventral region and the dorsal region, which are the elastic member placement regions, the first inner opening and the first outer opening are provided between the elastic members intermittently arranged in the vertical direction (X direction). The underpants-type absorbent article according to any one of <1> to <5>, wherein the hole portions are alternately arranged one by one.
<7>
The pants according to any one of <1> to <6>, wherein at least the inner opening is disposed between the elastic members that are intermittently disposed in a longitudinal direction of the pant-type absorbent article. Mold absorbent article.
<8>
The said inner side opening part and the said outer side opening part are the underpants type absorbent articles in any one of said <1>-<7> which is a shape long in the vertical direction of the said underpants type absorbent article, respectively.
<9>
The inner hole portion and the outer hole portion are formed in an elliptical shape that is long in the vertical direction (X direction) in plan view, and the pants type according to any one of <1> to <8>. Absorbent article.
<10>
The outer opening portion is the pant-type absorbent article according to any one of <1> to <9>, which is formed in a design pattern.
<11>
The exterior body is formed from the ventral region to the dorsal region,
The inner opening portion and the outer opening portion are located in a non-elastic member arrangement region where a plurality of the elastic members are not arranged, and are located in an elastic member arrangement region where the elastic members are arranged. The underpants-type absorbent article according to any one of the above items <1> to <10>, which has a larger opening area than a product.

<12>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
The second inner opening and the second outer opening in the non-elastic member arrangement region with respect to the opening area (S1) of the first inner opening and the first outer opening in the elastic member arrangement region. The pants-type absorbent article according to any one of <1> to <11>, wherein the ratio (S2 / S1) of the opening area (S2) of the part is 2 or more and 500 or less, preferably 5 or more and 100 or less.
<13>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
In the elastic member arrangement region (abdominal region and back region), the opening area (S3) of the first inner opening is larger than the opening area (S4) of the first outer opening. The underpants-type absorbent article according to any one of <1> to <12>.
<14>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
The ratio (S3 / S4) of the opening area (S3) of the first inner opening to the opening area (S4) of the first outer opening is 2 or more and 100 or less, preferably 2 or more and 50 or less. The pants-type absorbent article according to any one of <1> to <13>.
<15>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
In the inelastic member arrangement region (inseam region), the opening area (S5) of the second inner opening portion is larger than the opening area (S6) of the second outer opening portion. The underpants type absorbent article according to any one of ~ <14>.
<16>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
The ratio (S5 / S6) of the opening area (S5) of the second inner opening to the opening area (S6) of the second outer opening is 2 or more and 30 or less, preferably 2 or more and 10 or less. The underpants-type absorbent article according to any one of <1> to <15>.
<17>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
The average opening area of the first inner opening portion and the first outer opening portion in the elastic member arrangement region is preferably 1 mm ² or more and 100 mm ² or less, preferably from <1> to <16>. The underpants type absorbent article according to any one of the above.
<18>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
Any one of <1> to <17>, wherein an average opening area of the second inner opening and the second outer opening in the non-elastic member arrangement region is preferably 20 mm ² or more and 1500 mm ² or less. A pants-type absorbent article according to claim 1.
<19>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
In the elastic member arrangement region, any one of the above items <1> to <10>, wherein an opening area of the first inner opening portion and an opening area of the first outer opening portion are substantially equal. Pants-type absorbent article.
<20>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
In the inelastic member arrangement region, any one of the above items <1> to <12>, wherein an opening area of the second inner opening portion and an opening area of the second outer opening portion are substantially equal. Pants-type absorbent article.

<21>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
A longitudinal direction (X) in which the shape of the second inner opening portion arranged in the crotch region which is the non-elastic member arrangement region is larger than the opening areas of the first inner opening portion and the first outer opening portion. The pants-type absorbent article according to any one of <1> to <20>, which is formed in an elliptical shape that is long in a direction).
<22>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
The shape of the second outer opening portion arranged in the crotch region which is the non-elastic member arrangement region is larger than the opening area of the first inner opening portion and the first outer opening portion. The pants-type absorbent article according to any one of <1> to <20>, which is formed in a pattern shape.
<23>
<1> to <22, wherein the inner opening and the outer opening have a smaller opening area on the side of the absorbent main body than on the side of the side seal part. > The pants type absorbent article according to any one of the above.
<24>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
The first inner opening and the first outer opening are formed such that the opening area gradually decreases inward in the lateral direction (Y direction) from the side seal portion side toward the absorbent main body side. The underpants-type absorbent article according to any one of the above items <1> to <23>.
<25>
Each of the inner opening and the outer opening includes a first inner opening and a first outer opening disposed in the ventral region and the back region, which are elastic member arrangement regions, and an inelastic member. Having a second inner opening and a second outer opening arranged in the crotch region which is the arrangement region;
The opening area of the first inner opening and the first outer opening is gradually reduced from the side seal part side toward the absorbent main body side toward the inner side in the lateral direction (Y direction). The underpants-type absorbent article according to any one of <1> to <23>, which is formed.

DESCRIPTION OF SYMBOLS 1A, 1B Pants type disposable diaper 2 Exterior body 21 Inner layer sheet member 22 Outer layer sheet member 23 Leg elastic member 25 in the state extended in the horizontal direction (Y direction) Leg inner member 25 Inner opening part 26 Outer opening part DESCRIPTION OF SYMBOLS 3 Absorbent main body 31 Top sheet 32 Back sheet 33 Absorber 34 Side cuff 35 Elastic member A for three-dimensional gather formation Ventral region (elastic member arrangement region)
B Dorsal region (elastic member placement region)
C Inseam area (non-elastic member placement area)
CL1 Center line CL2 extending in the vertical direction Center line UT extending in the horizontal direction Upper region DT Lower region

Claims (8)

An exterior body having an abdominal region disposed on the abdomen side of the wearer when worn and a back side region disposed on the back side of the wearer when worn, and a vertically long absorbent body fixed to the inside of the exterior body A pant-type absorption comprising a pair of side seal portions, a waist opening portion and a pair of leg opening portions. A sex product,
The outer body has an elastic member disposed between the inner layer sheet member on the skin facing surface side and the outer layer sheet member on the non-skin facing surface side in a state of extending in the lateral direction of the pant-type absorbent article, In the longitudinal direction of the pant-type absorbent article, a plurality of intermittently arranged,
The inner layer sheet member has a plurality of inner opening portions, and the outer layer sheet member has a plurality of outer opening portions,
The exterior body is formed by being arranged at a position where the inner opening and the outer opening are mixed and do not overlap each other,
Paying attention to one elastic member, across the elastic member, the total number of the inner opening portion and the outer opening portion arranged in the upper region in the vertical direction of the pant-type absorbent article, A pants-type absorbent article in which the total number of the inner hole portions and the outer hole portions arranged in the lower region in the vertical direction is the same.   2. The pant-type absorbent article according to claim 1, wherein the exterior body is formed so as to be disposed at a position where the inner opening portion and the outer opening portion are mixed and do not overlap each other at least in the back region. .   The pants-type absorbent article according to claim 1 or 2, wherein the outer package is formed by alternately arranging the inner opening and the outer opening.   The pant-type absorption according to any one of claims 1 to 3, wherein at least the inner opening is arranged between the elastic members that are intermittently arranged in the longitudinal direction of the pant-type absorbent article. Sex goods.   The pants-type absorbent article according to any one of claims 1 to 4, wherein each of the inner opening and the outer opening has a shape that is long in a longitudinal direction of the pants-type absorbent article.   The pants type absorbent article according to any one of claims 1 to 5, wherein the outer opening is formed in a pattern. The exterior body is formed from the ventral region to the dorsal region,
The inner opening portion and the outer opening portion are located in a non-elastic member arrangement region where a plurality of the elastic members are not arranged, and are located in an elastic member arrangement region where the elastic members are arranged. The pants-type absorbent article according to any one of claims 1 to 6, wherein the area of the opening is larger than that of the article. The inner opening portion and the outer opening portion have a smaller opening area on the side of the absorbent main body than on the side of the side seal portion. The underpants type absorbent article of Claim 1.

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