JP2015107223A - Underpants type absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underpants type absorbent article which improves in air permeability in an exterior body, reduces internal stuffiness, suppresses recalling of an uneasiness for the leakage and improves in use feeling.SOLUTION: The exterior body 2 of the invented underpants type absorbent article 1A is formed extending in a horizontal direction Y and set with an elastic member 23 between an inner layer sheet member 21 and an outer layer sheet member 22. The exterior body 2 has a plurality of penetration holes 25 penetrating the inner layer sheet member 21 and the outer layer sheet member 22. The penetration hole 25 has smaller aperture area near an absorbent body 3 than that far from the absorbent body 3.

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, since the pants-type disposable diaper as described in Patent Document 1 is only provided with a uniform through hole in the exterior body, the user may be leaked. Invite anxiety.

  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 outer body has a plurality of through holes that penetrate the inner layer sheet member and the outer layer sheet member, and the through hole is formed of the absorbent member. The thing near the main body is far from the absorbent main body. Base and is intended to provide a pant-type absorbent article opening area is small.

  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 the top view which looked at the state which expand | deployed and expanded the underpants type disposable diaper which is 2nd Embodiment of this invention from the outer-layer sheet | seat member side of the exterior body (FIG. 3 equivalent view). FIG. 6: is the top view which looked at the state which expand | deployed and expanded the underpants type disposable diaper which is 3rd Embodiment of this invention from the outer-layer sheet | seat member side of the exterior body (FIG. 3 equivalent view).

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 provided, and both sides of the ventral | abdominal area A 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 is formed by arranging an elastic member 23 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 a state of extending in the lateral direction (Y direction). ing. In the diaper 1A, as shown in FIG. 2, the inner layer sheet member 21 is composed of one sheet, the outer layer sheet member 22 is also composed of one sheet, and between the inner layer sheet member 21 and the outer layer sheet member 22, A plurality of elastic members 23 arranged in a state of extending in the horizontal direction (Y direction) are intermittently arranged in the vertical direction (X direction). 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. It should be noted 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).

  Moreover, the exterior body 2 has the some through-hole 25 which penetrates the inner-layer sheet member 21 and the outer-layer sheet member 22, as shown in FIGS. The through-hole 25 has a smaller opening area in the vicinity of the absorbent main body 3 than in the case of the through-hole 25 located far from the absorbent main body 3. In the diaper 1 </ b> A, a plurality of through holes 25 are arranged in a region extending from the ventral region A to the dorsal region B excluding the region overlapping the absorbent main body 3 in the exterior body 2. Each through hole 25 is formed to penetrate at the same position in the inner layer sheet member 21 and the outer layer sheet member 22. As described above, in the diaper 1A, the through holes 25 are arranged in the entire region from the ventral region A to the dorsal region B excluding the region overlapping the absorbent main body 3, but the air permeability of the exterior body 2 is improved. From the viewpoint of improving and reducing the stuffiness inside the diaper 1 </ b> A, it may be arranged at least in the back region B.

  If it explains in full detail about the through-hole 25 of 1 A of diapers, as shown in FIG. 3, the through-hole 25 is distribute | arranged at equal intervals in the vertical direction (X direction). Here, the pitch in the vertical direction (X direction) means the distance between the center of one through hole 25 and the center of the through hole adjacent to the through hole 25 in the vertical direction (X direction). . Further, the through holes 25 are also arranged at equal pitches in the horizontal direction (Y direction). Here, the pitch in the horizontal direction (Y direction) means the distance between the center of one through hole 25 and the center of the through hole 25 adjacent to the through hole 25 in the horizontal direction (Y direction). To do.

  The through-hole 25 of the diaper 1A will be described in more detail. In the diaper 1A in a state where the diaper 1A shown in FIG. 3 is expanded and expanded, the through-hole 25 bisects the diaper 1A in the expanded and extended state. As the distance from the vertical center line CL1 extending in the vertical direction (X direction) increases in the horizontal direction (Y direction), the opening area gradually increases. 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.

  As shown in FIG. 3, the through-hole 25 in the elastic member arrangement region is arranged between the elastic members 23 adjacent in the vertical direction (X direction). Specifically, the through holes 25 in the ventral region A and the dorsal region B, which are elastic member arrangement regions, are elastic members 23 adjacent in the vertical direction (X direction) in the vertical direction (X direction). One piece is placed between each other. And the through-hole 25 which exists in each of the ventral | abdominal area | region A and the back | dorsal area | region B which is an elastic member arrangement | positioning area | region is distribute | arranged at equal intervals in the horizontal direction (Y direction).

As described above, in the diaper 1 </ b> A, as shown in FIG. 3, the through hole 25 is closer to the absorbent main body 3 than the one farther from the absorbent main body 3. The area is small. And the through-hole 25 is formed so that the opening area gradually becomes large as it leaves | separates to the horizontal direction (Y direction) from the longitudinal centerline CL1. In other words, the through hole 25 is formed so that the opening area gradually decreases from the pair of side seal portions 5 and 5 toward the longitudinal center line CL1. The ratio (S1 / S2) of the opening area (S2) of the through hole 25 located closest to the longitudinal center line CL1 to the opening area (S1) of the through hole 25 located closest to the side seal part 5 is: It is preferably 2 or more and 200 or less, more preferably 5 or more and 100 or less, from the viewpoint that it is difficult to recall anxiety about leakage and the usability is improved. Specifically, the average opening area of the through hole 25 located closest to the side seal portion 5 is preferably 5 mm ² or more and 200 mm ² or less, and the through hole 25 located closest to the longitudinal center line CL1. It is preferable that the average hole area is 1 mm ² or more and 30 mm ² or less. In addition, as shown in FIG. 3, in the through holes 25 arranged at the same position in the lateral direction (Y direction), the through holes 25 arranged in the elastic member arrangement regions (the ventral region A and the dorsal region B). From the viewpoint that the opening area (S3) is less likely to recall anxiety about leakage and the usability is improved, from the opening area (S4) of the through hole 25 arranged in the inelastic member arrangement region (inseam region C). The ratio (S3 / S4) of the opening area (S4) of the through hole 25 in the non-elastic member arrangement region to the opening area (S3) of the through hole 25 in the elastic member arrangement region is 2 or more and 100. Or less, more preferably 5 or more and 30 or less.

  Examples of the shape of the through-hole 25 in plan view include a geometric pattern shape such as a circular shape, a polygonal shape, and an elliptical shape, and a shape modeled on size information. From the viewpoint of vertical wrinkle formation by an elastic member, at least, The through holes 25 in the elastic member arrangement region (abdominal region A, dorsal region B) are preferably long in the vertical direction (X direction). In the diaper 1A, the shape of all the through holes 25 Is formed in an elliptical shape that is long in the vertical direction (X direction). In addition, the shape of the through hole 25 in plan view may be a design pattern such as a character shape from the viewpoint of improving the appearance of the diaper 1A.

  The through hole 25 is formed in advance in each of the inner layer sheet member 21 and the outer layer sheet member 22 by melting, cutting out, or punching out the inner layer sheet member 21 and the outer layer sheet member 22 constituting the exterior body 2. May be. The through-hole 25 is melted, cut out, or punched out of the exterior body 2 formed by bonding the elastic member 23 between the inner layer sheet member 21 and the outer layer sheet member 22. And may be formed.

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 1 </ b> A, as shown in FIGS. 1 and 4, the exterior body 2 has a through hole 25 that penetrates the inner layer sheet member 21 and the outer layer sheet member 22, so that the air permeability of the exterior body 2 is improved. And the internal stuffiness at the time of diaper 1A wearing is reduced, and a usability | use_condition improves. Further, as shown in FIG. 1, the through-hole 25 is formed with a smaller opening area in the vicinity of the absorbent main body 3 than in the case of the through-hole 25 located far from the absorbent main body 3. Therefore, since the through-hole 25 located near the absorbent main body 3 is difficult to see while wearing the diaper 1A, it is difficult for the user to be reminded of leakage and the feeling of use is improved. In particular, in the diaper 1A, since the through hole 25 is not disposed in the region of the exterior body 2 that overlaps with the absorbent main body 3, it is difficult for the user to recall anxiety about leakage, and the feeling of use is further improved.

  Moreover, in the diaper 1A, as shown in FIG. 1, the through-hole 25 is formed so that the opening area gradually increases as the distance from the vertical center line CL1 increases in the horizontal direction (Y direction). Therefore, the air permeability of the exterior body 2 is further improved. Moreover, the through-hole 25 is formed so that the opening area gradually decreases from the pair of side seal portions 5 and 5 toward the longitudinal center line CL1. For this reason, it is difficult for the user to recall the anxiety about leakage. Therefore, the usability of the diaper 1A is further improved.

  Further, in the diaper 1 </ b> A, as shown in FIG. 1, the through holes 25 in the ventral region A and the dorsal region B, which are elastic member placement regions, are elastic members 23 adjacent in the vertical direction (X direction). It is arranged between the two. Therefore, it is difficult for the elastic member 23 to touch the skin directly, and it is difficult for the skin trouble that develops when the elastic member touches the skin of the wearer.

Next, pants-type disposable diapers 1 </ b> B to 1 </ b> C (hereinafter also referred to as “diapers 1 </ b> B and 1 </ b> C”) according to second to third embodiments of the present invention will be described with reference to the drawings.
About the diaper 1B-1C of 2nd-3rd embodiment, a different point from 1 A of diapers 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. Moreover, about the effect of the diaper 1B-1C of 2nd-3rd embodiment, a point different from the effect of the diaper 11A of 1st Embodiment is demonstrated, The point which is not demonstrated in particular is the same as the effect of the diaper 1A, The description of the effect of the diaper 1A is applied as appropriate.

  The through-hole 25 of the diaper 1B will be described in detail. In the diaper 1B in a state where the diaper 1B shown in FIG. 5 is expanded and expanded, the through-hole 25 bisects the diaper 1B in the expanded and extended state. As the distance from the horizontal center line CL2 extending in the horizontal direction (Y direction) increases in the vertical direction (X direction), the opening area gradually increases. Specifically, in the diaper 1 </ b> B, the through holes 25 are arranged in the entire region from the ventral region A to the dorsal region B excluding the region overlapping the absorbent main body 3. The through holes 25 are arranged at an equal pitch in the vertical direction (X direction), and are arranged at an equal pitch in the horizontal direction (Y direction). And the through-hole 25 which exists in each of the ventral | abdominal area | region A and back | dorsal area | region B which is an elastic member arrangement | positioning area | region is between the elastic members 23 adjacent to the vertical direction (X direction) in the vertical direction (X direction). One by one.

  In the diaper 1 </ b> B, as shown in FIG. 5, the through-hole 25 is formed with a smaller opening area in the vicinity of the absorbent main body 3 than in the case of the through-hole 25 located far from the absorbent main body 3. ing. And the through-hole 25 is formed so that the opening area gradually becomes large as it leaves | separates from the horizontal centerline CL2 to the vertical direction (X direction). In other words, the through hole 25 is formed such that the opening area gradually decreases from the waist opening WO toward the lateral center line CL2.

The effect at the time of using the underpants type disposable diaper 1B of 2nd embodiment of this invention mentioned above is demonstrated.
In the diaper 1 </ b> B, as shown in FIG. 5, the through hole 25 is formed so that the opening area gradually increases as the distance from the horizontal center line CL <b> 2 increases in the vertical direction (X direction). Therefore, the air permeability of the exterior body 2 is further improved. Moreover, the through-hole 25 is formed so that the opening area gradually decreases from the waist opening WO toward the lateral center line CL2. For this reason, it is difficult for the user to recall the anxiety about leakage. Therefore, the usability of the diaper 1B is further improved.

  Next, the through-hole 25 of the diaper 1C will be described in detail. In the diaper 1C in which the diaper 1C shown in FIG. 6 is expanded and extended, the through-hole 25 is the diaper 1C in the expanded and extended state. As the distance from the intersection point P between the vertical center line CL1 extending in the vertical direction (X direction) and the horizontal center line CL2 extending in the horizontal direction (Y direction) is increased, the opening area is gradually increased. Specifically, in the diaper 1 </ b> C, the through hole 25 having a circular shape in plan view is disposed in the entire region extending from the ventral region A to the dorsal region B excluding the region overlapping the absorbent main body 3. . The through holes 25 are randomly spaced in the vertical direction (X direction), and gradually increase in pitch in the horizontal direction (Y direction) from the intersection P in the vertical direction (X direction). Widely spaced. And the through-hole 25 which exists in each of the ventral | abdominal area | region A and back | dorsal area | region B which is an elastic member arrangement | positioning area | region is between the elastic members 23 adjacent to the vertical direction (X direction) in the vertical direction (X direction). One by one.

  In the diaper 1 </ b> C, as shown in FIG. 6, the through-hole 25 is formed with a smaller opening area in the vicinity of the absorbent main body 3 than in the case of the through-hole 25 located far from the absorbent main body 3. ing. And the through-hole 25 is formed so that the opening area gradually becomes large as it leaves | separates from the intersection P of the vertical centerline CL1 and the horizontal centerline CL2. That is, the through-hole 25 of the diaper 1C is formed so that the gradually opening area increases with increasing distance from the intersection point P in the longitudinal direction (X direction) and gradually increases with increasing distance from the intersection point P in the lateral direction (Y direction). Is formed large. In other words, the through hole 25 is formed such that the opening area gradually decreases from the end on the waist opening WO side of the pair of side seal portions 5 and 5 toward the intersection point P.

The effect at the time of using the underpants type disposable diaper 1C of 3rd embodiment of this invention mentioned above is demonstrated.
In the diaper 1 </ b> C, as shown in FIG. 6, the through holes 25 are formed so that the opening area gradually increases as the distance from the intersection P between the vertical center line CL <b> 1 and the horizontal center line CL <b> 2 increases. Therefore, the air permeability of the exterior body 2 is further improved. Further, the through hole 25 is formed so that the opening area gradually decreases from the end of the pair of side seal portions 5 and 5 on the side of the waist opening WO toward the intersection P. For this reason, it is difficult for the user to recall the anxiety about leakage. Therefore, the usability of the diaper 1C is further improved.

The pants-type absorbent article of the present invention is not limited to the diapers 1A to 1C of the first to third embodiments described above, and can be appropriately changed.
For example, as shown in FIGS. 3, 5, and 6, the through-holes 25 of the diapers 1 </ b> A to 1 </ b> C described above are formed between the elastic members 23 adjacent to each other in the vertical direction (X direction). One piece is arranged between each of them, but a plurality of pieces may be arranged. Further, there may be a portion that is not arranged between the elastic members 23 adjacent in the vertical direction (X direction).

  Moreover, for example, as shown in FIGS. 3, 5, and 6, the through holes 25 of the diapers 1 </ b> A to 1 </ b> C are formed from the ventral region A to the dorsal region B of the exterior body 2 excluding the region overlapping the absorbent main body 3. However, it may be arranged in the entire region extending from the ventral region A to the dorsal region B of the exterior body 2 including the region overlapping the absorbent main body 3.

  Further, for example, as shown in FIG. 3, the through hole 25 of the diaper 1A is formed such that the opening area gradually increases as the distance from the vertical center line CL1 in the horizontal direction (Y direction) increases. May be formed large. Similarly, as shown in FIG. 5, the through-hole 25 of the diaper 1B has a progressively larger opening area as the distance from the horizontal center line CL2 increases in the vertical direction (X direction). It may be formed large. Similarly, the through-hole 25 of the diaper 1C is gradually formed to have a larger opening area as it moves away from the intersection P between the vertical center line CL1 and the horizontal center line CL2, but the opening area is gradually increased. May be.

  Moreover, in the diaper 1A-1C mentioned above, as shown in FIG. 2, although the inner layer sheet | seat member 21 is formed from one sheet | seat, you may form from several 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.

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 exterior body is formed by arranging an elastic member 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. And
The exterior body has a plurality of through holes penetrating the inner layer sheet member and the outer layer sheet member,
The through-hole is a pant-type absorbent article having a smaller opening area when the through hole is closer to the absorbent main body than when the through hole is farther from the absorbent main body.

<2>
In the pants-type absorbent article in a state where the pants-type absorbent article is expanded and expanded,
In the above <1>, the through-hole is gradually formed to have a larger opening area as it is laterally separated from a longitudinal center line extending in the longitudinal direction that bisects the expanded pants-type absorbent article in the expanded state. The underpants type absorbent article as described.
<3>
The through-hole is formed such that the opening area gradually decreases from the side seal portion toward the longitudinal center line CL1 extending in the longitudinal direction that bisects the expanded pants-type absorbent article. The underpants-type absorbent article according to <1> or <2>.
<4>
Nearest from the longitudinal center line CL1 extending in the longitudinal direction that bisects the expanded pant-type absorbent article with respect to the opening area (S1) of the through hole located closest to the side seal portion The ratio (S1 / S2) of the opening area (S2) of the through-holes positioned at is 2 or more and 200 or less, preferably 5 or more and 100 or less, according to any one of <1> to <3>. Pants-type absorbent article.
<5>
An average opening area of the through hole located closest to the side seal portion is 5 mm ² or more and 200 mm ² or less, and extends in a longitudinal direction that bisects the expanded pants-type absorbent article. The underpants type absorbent article according to any one of <1> to <4>, wherein an average opening area of the through hole located closest to the longitudinal center line CL1 is 1 mm ² or more and 30 mm ² or less.
<6>
Having a crotch region between the ventral region and the dorsal region;
In the said through-hole arrange | positioned in the same position in the horizontal direction (Y direction) of the said underpants type absorbent article in the said exterior body, the through-hole distribute | arranged to the abdominal side area | region and back side area | region which are elastic member arrangement | positioning areas The pants according to any one of the above items <1> to <5>, wherein the opening area (S3) is larger than the opening area (S4) of the through hole arranged in the crotch region which is a non-elastic member arrangement region Mold absorbent article.
<7>
The opening area of the through-holes arranged in the crotch area (non-elastic member arrangement area) with respect to the opening area (S3) of the through-holes arranged in the abdominal area and the dorsal area as elastic member arrangement areas ( The pants-type absorbent article according to any one of <1> to <6>, wherein the ratio (S3 / S4) of S4) is 2 or more and 100 or less, preferably 5 or more and 30 or less.
<8>
In the pants-type absorbent article in a state where the pants-type absorbent article is expanded and expanded,
In the above <1>, the through-holes are formed so that the opening area gradually increases as the distance from the lateral center line extending in the lateral direction that bisects the expanded pants-type absorbent article in the longitudinal direction increases. The underpants type absorbent article as described.
<9>
The through-hole is formed such that the opening area gradually decreases from the waist opening toward the lateral center line CL2 extending in the lateral direction that bisects the expanded pant-type absorbent article. The underpants type absorbent article as described in <1>.
<10>
In the pants-type absorbent article in a state where the pants-type absorbent article is expanded and expanded,
The through-holes are formed so that the opening area gradually increases as the distance from the intersection between the longitudinal center line extending in the longitudinal direction and the center line extending in the lateral direction bisects the expanded pants-type absorbent article in the expanded state. The pants-type absorbent article according to <1>.
<11>
The through holes are randomly spaced in the longitudinal direction (X direction), and in the lateral direction (Y direction), the pants-type absorbent article in the expanded and elongated state is bisected. The underpants according to <1>, wherein the pitches are gradually spaced apart from each other in the longitudinal direction (X direction) from the intersection P between the longitudinal center line extending in the longitudinal direction and the center line extending in the lateral direction. Mold absorbent article.

<12>
The through hole has a longitudinal center line extending in the longitudinal direction and a center extending in the lateral direction that bisects the pant-type absorbent article in the expanded and extended state from the end of the side seal portion on the waist opening side. The pants-type disposable diaper according to the above <1>, wherein the area of the opening is gradually reduced toward the intersection P with the line.
<13>
A plurality of the elastic members are intermittently arranged in the longitudinal direction of the pants-type absorbent article,
The said through-hole in the elastic member arrangement | positioning area | region where the said elastic member of the said exterior body was distribute | arranged is any one of said <1>-<12> which is a shape long in the vertical direction of the said underpants type absorbent article. The underpants type absorbent article as described.
<14>
The said through-hole in the elastic member arrangement | positioning area | region where the said elastic member of the said exterior body was distribute | arranged is arrange | positioned between these elastic members adjacent to the vertical direction of the said underpants type absorbent article <1>. The underpants type absorbent article according to any one of ~ <13>.
<15>
The said through-hole is an underpants type absorbent article as described in any one of said <1>-<14> arrange | positioned at equal intervals in the vertical direction (X direction).
<16>
In the longitudinal direction (X direction), there is one through hole between the elastic members adjacent to each other in the longitudinal direction (X direction). The pants-type absorbent article according to any one of the above items <1> to <15>, which are arranged one by one.
<17>
In the lateral direction (Y direction), the through-holes in the ventral region and the back region, which are elastic member placement regions, are arranged at an equal pitch and spaced apart from each other. <1> to <16> The underpants type absorbent article according to any one of the above.
<18>
The underpants-type absorbent article according to any one of <1> to <17>, wherein the through hole is disposed at least in a back region.
<19>
In any one of <1> to <18>, in which a plurality of the through holes are arranged in a region extending from a ventral region to a dorsal region excluding a region overlapping the absorbent main body in the exterior body. The underpants type absorbent article as described.
<20>
The through-hole is formed such that an opening area is gradually increased as the distance from the longitudinal center line CL1 extending in the longitudinal direction, which bisects the expanded pants-type absorbent article in the expanded state, increases in the lateral direction (Y direction). The pants-type absorbent article according to <1>.
<21>
The through-holes are formed such that the opening area gradually increases as the distance from the lateral center line CL2 extending in the lateral direction, which bisects the expanded pants-type absorbent article in the expanded state, increases in the longitudinal direction (X direction). The pants-type absorbent article according to <1>.
<22>
The through-holes are gradually stepped away from the intersection P between the longitudinal center line CL1 extending in the longitudinal direction and the transverse center line CL2 extending in the lateral direction, which bisects the expanded pants-type absorbent article in the expanded state. The underpants-type absorbent article according to <1>, wherein the opening area is large.
<23>
The pants-type absorbent article according to any one of <1> to <22>, which is a pants-type diaper.

DESCRIPTION OF SYMBOLS 1A, 1B Pants type disposable diaper 2 Exterior body 21 Inner layer sheet member 22 Outer layer sheet member 23 Elastic member 24 arranged in the state extended in the horizontal direction (Y direction) Leg elastic member 25 Through-hole 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 extending in the vertical direction CL2 Center line extending in the horizontal direction

Claims (6)

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 exterior body is formed by arranging an elastic member 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. And
The exterior body has a plurality of through holes penetrating the inner layer sheet member and the outer layer sheet member,
The through-hole is a pant-type absorbent article having a smaller opening area when the through hole is closer to the absorbent main body than when the through hole is farther from the absorbent main body. In the pants-type absorbent article in a state where the pants-type absorbent article is expanded and expanded,
The said through-hole is gradually formed so that an opening area is gradually increased as it leaves | separates from the vertical centerline extended in the vertical direction which bisects the underpants type absorbent article of the state expanded and extended. Pants-type absorbent article. In the pants-type absorbent article in a state where the pants-type absorbent article is expanded and expanded,
The said through-hole is gradually formed so that the opening area becomes large gradually as it leaves | separates to the vertical direction from the horizontal center line extended in the horizontal direction which bisects the underpants type absorbent article of the state expanded and extended. Pants-type absorbent article. In the pants-type absorbent article in a state where the pants-type absorbent article is expanded and expanded,
The through-holes are formed so that the opening area gradually increases as the distance from the intersection between the longitudinal center line extending in the longitudinal direction and the center line extending in the lateral direction bisects the expanded pants-type absorbent article in the expanded state. The underpants type absorbent article according to claim 1. A plurality of the elastic members are intermittently arranged in the longitudinal direction of the pants-type absorbent article,
The said through-hole which exists in the elastic member arrangement | positioning area | region where the said elastic member of the said exterior body was distribute | arranged is a shape long in the vertical direction of the said underpants type absorbent article, Any one of Claims 1-4. Pants-type absorbent article. The said through-hole which exists in the elastic member arrangement | positioning area | region where the said elastic member of the said exterior body was distribute | arranged is distribute | arranged between these elastic members adjacent to the vertical direction of the said pants | underpants type absorbent article. The underpants type absorbent article according to any one of 5.

Images