CN209790196U - absorbent article - Google Patents

Abstract

An absorbent article (1) comprises: a ventral portion (30) provided on the ventral side of the wearer; a back side part (40) provided on the back side of the wearer; and a plurality of elastic members (35, 45) provided on at least one of the abdominal section (30) and the back section (40), wherein the plurality of elastic members (35, 45) have upper elastic members (35t, 45t) and lower elastic members (35m, 35s, 45m, 45s), wherein the upper elastic members (35t, 45t) are positioned on the uppermost side of the plurality of elastic members (35, 45) in the longitudinal direction, the lower elastic members (35m, 35s, 45m, 45s) are positioned on the lower side of the upper elastic members, a through hole (50) penetrating from the skin side to the non-skin side does not overlap with the upper elastic members (35t, 45t) in the longitudinal direction, and the through hole (50) penetrating from the skin side to the non-skin side does not overlap with the elastic members (35, 45) adjacent to the lower elastic members (35m, 35s, 45m, 45s) in the longitudinal direction, and overlaps the lower elastic members (35m, 35s, 45m, 45s), and the lower elastic members (35m, 35s, 45m, 45s) are discontinuous in the through-holes (50) in the transverse direction.

Description

Absorbent article

Technical Field

the utility model relates to an absorptive article.

Background

Conventionally, disposable diapers and the like have been known as absorbent articles for absorbing excrement such as urine. For example, as shown in document 1, a pants-type disposable diaper 1 includes an outer package 3 and an absorbent body 2, and a plurality of holes 5 penetrating through the outer package 3 in a thickness direction. By providing the plurality of holes 5, the air permeability of the absorbent article can be improved.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2015-

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

However, in the disposable diaper 1 shown in document 1, since the plurality of holes 5 are arranged in a line in the longitudinal direction, when a force is applied to the pants-type disposable diaper 1 in the vertical direction when the wearer wants to wear the disposable diaper, for example, the periphery of the holes 5 may be cracked, and when the disposable diaper 1 is worn, the wearer may feel that the excrement is not leaked from the holes 5 whose periphery is cracked.

The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to improve breathability of a disposable absorbent article and improve adhesiveness of the absorbent article.

Means for solving the problems

The main technical solution for achieving the above object is an absorbent article having a longitudinal direction and a transverse direction orthogonal to each other, the absorbent article comprising: a ventral portion provided on the ventral side of the wearer; a back side portion provided on a back side of the wearer; and a plurality of elastic members provided on at least one of the abdominal section and the back section, the plurality of elastic members including an upper elastic member and a lower elastic member, wherein the upper elastic member is positioned on an uppermost side of the plurality of elastic members in the longitudinal direction, the lower elastic member is positioned below the upper elastic member, a through hole penetrating from a skin side to a non-skin side does not overlap with the upper elastic member in the longitudinal direction, a through hole penetrating from the skin side to the non-skin side does not overlap with an elastic member adjacent to the lower elastic member in the longitudinal direction but overlaps with the lower elastic member, and the lower elastic member is discontinuous in the through hole in the lateral direction.

Other features of the present invention will be apparent from the description of the present specification and the accompanying drawings.

Effect of the utility model

According to the present invention, the through-hole and the upper elastic member do not overlap in the longitudinal direction, and therefore the upper elastic member positioned uppermost does not become discontinuous due to the through-hole, and the waist of the wearer can be appropriately fitted with the upper elastic member. Further, the through-hole does not overlap with the elastic member adjacent to the lower elastic member in the longitudinal direction but overlaps with the lower elastic member, whereby the possibility of cracking around the through-hole due to pulling in the vertical direction when worn is reduced, and the through-hole is easily opened in accordance with contraction of the lower elastic member, and the air permeability of the absorbent article can be further improved.

Drawings

Fig. 1 is a schematic perspective view of a diaper 1 as an example of the absorbent article of the present embodiment.

Fig. 2 is a plan view of the diaper 1 in an unfolded, extended state as viewed from the skin side.

Fig. 3 is a view showing a cross section a-a of fig. 2.

Fig. 4A is a view showing a part of the band-shaped ventral outer package member 300 in an extended state before the slit S (through hole 50) is formed. Fig. 4B is a diagram showing a part of the band-shaped ventral outer package member 300 in an extended state when the slit S (through hole 50) is formed. Fig. 4C is a view showing a part of the abdomen-side outer package member 30 in a worn state.

Fig. 5 is an enlarged view of a portion B of fig. 2.

Fig. 6 is a plan view of the diaper 100 according to another embodiment viewed from the skin side.

Detailed Description

At least the following matters will be made clear from the description of the present specification and the attached drawings.

an absorbent article having mutually orthogonal longitudinal and transverse directions, the absorbent article comprising: a ventral portion provided on the ventral side of the wearer; a back side portion provided on a back side of the wearer; and a plurality of elastic members provided on at least one of the abdominal section and the back section, the plurality of elastic members including an upper elastic member and a lower elastic member, wherein the upper elastic member is positioned on an uppermost side of the plurality of elastic members in the longitudinal direction, the lower elastic member is positioned below the upper elastic member, a through hole penetrating from a skin side to a non-skin side does not overlap with the upper elastic member in the longitudinal direction, a through hole penetrating from the skin side to the non-skin side does not overlap with an elastic member adjacent to the lower elastic member in the longitudinal direction and overlaps with the lower elastic member, and the lower elastic member is discontinuous in the through hole in the transverse direction.

in such an absorbent article, the through-holes and the upper elastic members do not overlap each other in the longitudinal direction, and therefore the upper elastic member positioned uppermost does not become discontinuous due to the through-holes, and the waist of the wearer can be appropriately fitted with the upper elastic members. Further, the through-hole does not overlap with the elastic member adjacent to the lower elastic member in the longitudinal direction but overlaps with the lower elastic member, whereby the possibility of the periphery of the through-hole being cracked by pulling up in the vertical direction when worn is reduced, and the through-hole is easily perforated in accordance with the contraction of the lower elastic member, and the air permeability of the absorbent article can be further improved.

The absorbent article preferably includes an absorbent body having one end portion joined to the front side portion in an overlapping manner and the other end portion joined to the back side portion in an overlapping manner, and the through-hole is provided in a region below the one end edge or below the other end edge of the absorbent body.

with such an absorbent article, the breathability of the absorbent article provided with the through-holes can be improved while the absorbent article is appropriately fitted to the waist of the wearer.

In the absorbent article, it is preferable that a sheet member located closer to the skin side than the absorbent main body is provided on the upper portion of the abdomen-side portion or the back-side portion, an end edge of the absorbent main body is provided between an upper end and a lower end of the sheet member in the longitudinal direction, and the through-hole is provided in a region lower than the lower end of the sheet member.

With such an absorbent article, the breathability of the absorbent article provided with the through-holes can be improved while the absorbent article is appropriately fitted to the waist of the wearer.

in the absorbent article, it is preferable that a lowermost elastic member is provided in a region below the lower elastic member and farthest from the lower elastic member, and a through hole penetrating from the skin side to the non-skin side in the longitudinal direction does not overlap with the lowermost elastic member.

With such an absorbent article, the fit on the lower side of the absorbent article can be ensured, and the possibility that excrement or the like leaks out from the leg hole can be reduced.

The absorbent article preferably includes an absorbent body including an absorbent body for absorbing excrement, wherein the through-hole is provided outside the absorbent body in the lateral direction, and the lower elastic member is discontinuous in a region where the absorbent body and the lower elastic member overlap in the lateral direction.

in the absorbent article of this type, the lower elastic member may be stretched in a narrower range when the lower elastic member is discontinuous in a region where the absorbent body and the lower elastic member overlap each other, and therefore the contractive force may be excessively increased.

In the absorbent article, it is preferable that the front side portion and the back side portion each have a skin side sheet and a non-skin side sheet, the lower elastic member is disposed between the skin side sheet and the non-skin side sheet, an adhesive is not provided at least in a rectangular region formed by a side that circumscribes the through hole and extends in the transverse direction and a side that extends in the longitudinal direction, and the skin side sheet and the non-skin side sheet are joined to each other by the adhesive provided in the lower elastic member.

In the absorbent article, the skin-side sheet and the non-skin-side sheet are joined together with the adhesive provided on the lower elastic member, and the adhesive is not provided in the rectangular region formed by the side that circumscribes the through-hole and extends in the lateral direction and the side that extends in the longitudinal direction, whereby the possibility that the periphery of the through-hole is hardened or the hole is insufficiently formed due to the curing of the adhesive can be reduced.

In the absorbent article, it is preferable that, when the through-hole is a1 st through-hole, a2 nd through-hole different from the 1 st through-hole is provided, the 2 nd through-hole is adjacent to the 1 st through-hole in the longitudinal direction, and another elastic member is provided between the 1 st through-hole and the 2 nd through-hole in the longitudinal direction.

with such an absorbent article, the fit of the absorbent article can be ensured by the expansion and contraction action of the other elastic member provided between the 1 st through-hole and the 2 nd through-hole.

In the absorbent article, it is preferable that, when the through-hole is a1 st through-hole, a 3 rd through-hole different from the 1 st through-hole is provided, the 1 st through-hole and the 3 rd through-hole at least partially overlap in the lateral direction, and a distance in the longitudinal direction between the 1 st through-hole and the 3 rd through-hole is longer than lengths of the 1 st through-hole and the 3 rd through-hole, respectively.

With such an absorbent article, even when a vertical force is applied to the absorbent article during wearing or the like, the possibility of the periphery of the through-hole being torn can be reduced.

The disposable diaper of the present embodiment is described below

< construction of Disposable diaper 1 > >)

Fig. 1 is a schematic perspective view of a diaper 1 as an example of the absorbent article of the present embodiment. Fig. 2 is a plan view of the diaper 1 in an unfolded, extended state as viewed from the skin side. Fig. 3 is a view showing a cross section a-a of fig. 2.

In the following description, the diaper 1 in the state of fig. 1 (worn state) has a "longitudinal direction", a "lateral direction" intersecting with the longitudinal direction, and a "thickness direction" intersecting with the longitudinal direction and the lateral direction. The longitudinal direction of the diaper 1 in the state (developed state) of fig. 2 is also referred to as the "longitudinal direction", one end and the other end of the diaper 1 in the longitudinal direction are referred to as the "upper end", and the substantially central portion C10 of the diaper 1 in the longitudinal direction is referred to as the "lower end". The side in contact with the wearer in the thickness direction is referred to as the "skin side", and the opposite side is referred to as the "non-skin side". A-A in FIG. 2 etc. represents the lateral center. The "extended state" refers to a state in which the diaper 1 is extended until wrinkles disappear, and specifically, refers to a state in which the diaper 1 is extended until the dimensions of the members (for example, the abdomen-side outer package member 30 and the back-side outer package member 40) constituting the diaper 1 become the same as or a length close to the dimensions of the members alone.

A disposable diaper 1 (hereinafter referred to as "diaper 1") of the present embodiment is a so-called 3-piece pants-type diaper mainly intended to be worn by infants, and includes an absorbent body 10 disposed in the crotch of a wearer, a back-side outer package member (back-side portion) 40, and a stomach-side outer package member (stomach-side portion) 30 for covering the stomach-side portion of the wearer.

in the developed state of fig. 2, the absorbent body 10 is laid from the front side outer package member 30 to the back side outer package member 40 so that the respective ends in the longitudinal direction thereof overlap the front side outer package member 30 and the back side outer package member 40, and the absorbent body 10 is joined and fixed to the front side outer package member 30 and the back side outer package member 40 from the skin side by an adhesive or the like. The outer shape of the box is approximately H-shaped when viewed from above. Then, the substantially central portion C10 in the longitudinal direction is folded in two as a folded-back position, and when the front-side outer package side edge portion 30se, which is the end portion in the lateral direction of the front-side outer package member 30, and the back-side outer package side edge portion 40se, which is the end portion in the lateral direction of the back-side outer package member 40, which are opposed to each other, are joined together, a diaper 1 (fig. 1) in which the waist opening 1HB and the pair of leg hole openings 1HL are formed is obtained.

The absorbent body 10 does not overlap with the region of the upper end 30e in the longitudinal direction of the abdomen-side outer package member 30, and the absorbent body 10 overlaps with the portion 30c on the center side in the longitudinal direction of the end 30 e. The absorbent body 10 overlaps the lateral center portion of the abdomen-side outer package member 30, and the absorbent body 10 does not overlap the region 30s laterally outside the lateral end 10e of the absorbent body 10.

similarly, the absorbent body 10 does not overlap the region of the upper end 40e in the longitudinal direction of the back-side outer package member 40, and the absorbent body overlaps the central portion 40c in the longitudinal direction of the end 40 e. The absorbent body 19 overlaps the lateral center portion of the back-side outer cover member 40, and the absorbent body 10 does not overlap the region 40s laterally outside the lateral end 10e of the absorbent body 10.

As shown in fig. 2 and 3, the absorbent main body 10 includes an absorbent body 11, a front sheet member 13 covering the absorbent body 11 from the skin side, and a back sheet member 15 covering the absorbent body 11 from the non-skin side. The front sheet member 13 is a liquid-permeable sheet member such as a nonwoven fabric. The back sheet member 15 is a sheet member composed of two layers of a liquid-impermeable leakproof sheet 15a such as polyethylene and a liquid-permeable outer sheet 15b such as nonwoven fabric. Further, a three-dimensional gather or a leg gather (not shown) may be formed from the outer sheet 15b or the like.

The absorbent body 11 is an absorbent core formed by laminating liquid absorbent materials, and is capable of absorbing excrement such as urine. The absorbent body 11 may be made of liquid absorbent fibers such as pulp fibers, absorbent polymers (SAP), or the like, and in the present embodiment, the absorbent body 11 has a substantially hourglass shape when viewed from above (fig. 2). The absorbent body 11 may be covered with a liquid-permeable sheet (not shown) such as a tissue paper.

Each of the front-side outer package member 30 and the back-side outer package member 40 is a sheet member formed of a flexible material such as a nonwoven fabric and having a substantially rectangular shape in plan view. As shown in fig. 3, the skin side sheet 31 and the non-skin side sheet 32 are joined to the abdomen-side outer package member 30 so as to overlap in order from the skin side in the thickness direction, and the skin side sheet 41 and the non-skin side sheet 42 are joined to the back-side outer package member 40 so as to overlap in order from the skin side in the thickness direction.

As shown in fig. 3, the non-skin side sheet 32 is folded back toward the lower side of the skin side from the upper end of the abdominal-side outer package member 30, that is, the abdominal-side upper end 30et, to form a folded-back portion 32f in the upper portion of the abdominal-side outer package member 30 in order to improve the tactile sensation of the skin and the durability. Similarly, the non-skin side sheet 42 is folded back downward toward the skin side from the upper end 40et of the back-side outer package member 40 as a starting point to form a folded-back portion 42f in the upper portion of the back-side outer package member 40.

The abdomen-side outer package member 30 includes a sheet member 34 disposed so as to cover the lower end of the folded portion 32f and the upper end of the absorbent main body 10 on the abdomen side from the skin side. Similarly, the back-side outer cover member 40 has a sheet member 44 disposed so as to cover a portion of the upper end portion of the back side of the absorbent main body 10 from the skin side at a position lower than the folded-back portion 42 f. The sheet members 34 and 44 are rectangular sheet members formed of nonwoven fabric or the like, different from the front-side outer package member 30 and the back-side outer package member 40. By providing the sheet members 34 and 44, the direct contact between the abdomen-side upper edge and the back-side upper edge in the longitudinal direction of the absorbent main body 10 and the skin of the wearer can be suppressed, and the feel of the waist can be improved when worn. Further, the sheet members 34, 44 can improve the strength of the upper end portion in the longitudinal direction of the stomach-side outer package member 30 and the strength of the upper end portion in the longitudinal direction of the back-side outer package member 40.

a plurality of through holes 50 are provided at predetermined intervals in the longitudinal direction and the lateral direction in the abdominal-side outer package member 30 and the back-side outer package member 40, and the through holes 50 have a predetermined length in the longitudinal direction and penetrate the outer package members 30 and 40 from the skin side to the non-skin side. The through-hole 50 will be described in detail later.

A plurality of elastic members 35, 35 · · and the like extending in the transverse direction are arranged between the skin side sheet 31 and the non-skin side sheet 32 of the abdominal-side outer package member 30. The elastic member 35 is fixed to the skin side sheet 31 and the non-skin side sheet 32 by adhesive bonding in a state of being stretched in the transverse direction. The plurality of elastic members 35, 35 are arranged at intervals in the longitudinal direction.

Similarly, a plurality of elastic members 45, 45 · · and the like extending in the transverse direction are arranged between the skin side sheet 41 and the non-skin side sheet 42 of the back-side outer covering member 40. The elastic member 45 is fixed to the skin side sheet 41 and the non-skin side sheet 42 by adhesive bonding in a state of being stretched in the transverse direction. The plurality of elastic members 45, 45 are arranged at intervals in the longitudinal direction.

The elastic members 35, 45 give lateral stretchability to the front-side outer package member 30 and the back-side outer package member 40, and form a plurality of wrinkles in the front-side outer package member 30 and the back-side outer package member 40.

In addition, the elastic members 35 and 45 are discontinuous in the region overlapping the absorbent body 11 in the vicinity of the widthwise central portion, and no stretching force acts thereon. This suppresses lateral contraction from acting on the absorbent body 11, and the absorbent body 11 is easily maintained substantially flat, thereby suppressing leakage of excrement and the like. The side elastic members 35s and 45s are provided in the region laterally outside the absorbent body 11.

The plurality of elastic members 35 include an upper elastic member 35t positioned on the uppermost side, a continuous elastic member (lower elastic member) 35m provided in a region below the upper elastic member 35t and continuous from one ventral outer package member side edge portion 30se to the other ventral outer package member side edge portion 30se in the lateral direction, a lateral elastic member (lower elastic member) 35s, and a lowermost elastic member 35u positioned on the lowermost side and provided at a position farthest below the continuous elastic member 35m and the lateral elastic member 35 s.

Similarly, the plurality of elastic members 45 include an upper elastic member 45t positioned uppermost, a continuous elastic member (lower elastic member) 45m provided in a region below the upper elastic member 45t and continuous from the rear-side outer package member side edge 40se on one side in the lateral direction to the rear-side outer package member side edge 40se on the other side, a side elastic member (lower elastic member) 45s, and a lowermost elastic member 45u positioned lowermost and provided at a position farthest below the continuous elastic member 45m and the side elastic member 45 s.

< about the through-hole 50> >)

first, the formation of the through-hole 50 is explained. In the manufacture of the diaper 1, the through-hole 50 of the abdomen-side outer package member 30 is formed in the process of manufacturing the abdomen-side outer package member 30. The abdomen-side outer package member 30 is formed by separating a band-shaped abdomen-side outer package member 300, in which a band-shaped skin side sheet 310, an elastic member 350, and a band-shaped non-skin side sheet (not shown) are arranged in this order from the skin side, into the individual abdomen-side outer package members 30.

Fig. 4A is a view showing a part of the band-shaped ventral outer package member 300 in an extended state before the slit S (through hole 50) is formed. Fig. 4B is a diagram showing a part of the band-shaped ventral outer package member 300 in an extended state when the slit S (through hole 50) is formed. Fig. 4C is a view showing a part of the abdomen-side outer package member 30 in a worn state. Fig. 4A, 4B, and 4C are views seen from the skin side, respectively.

Fig. 4A shows a state in which the band-shaped abdominal-side outer package member 300 before the slit S is formed is stretched until the wrinkles of the band-shaped skin-side sheet 310 and the wrinkles of the band-shaped non-skin-side sheet are substantially eliminated.

Next, as shown in fig. 4B, a linear slit S extending in the longitudinal direction is formed in the elongated band-shaped ventral outer package member 300 so as to cross a part of the elastic member 350. The slit S is formed by cutting the band-shaped skin side sheet 310, the elastic member 350, and the band-shaped non-skin side sheet using a predetermined cutter. Fig. 4B shows the instant when the slit S is formed by cutting. The slit S is then formed as a through hole as shown in fig. 4C by the elastic member 350. The slit S of the present embodiment is a linear slit, and unlike the case of cutting a shape having a predetermined area, cutting chips are less likely to be generated.

Fig. 4C shows a part of the abdominal-side outer package member 30 in a state where the wearer wears the diaper 1. The outline of the through hole 50 of the abdomen-side outer package member 30 in the worn state is opened to both sides in the lateral direction, and the shape of the through hole 50 is substantially rhombic. This is because, as shown in fig. 4C, the elastic member 35 contracts to pull the periphery of the through hole 50 in the lateral direction. This allows the through-holes 50 to be opened wider in the worn state, thereby further improving the breathability of the diaper 1. By making the opening of the individual through-holes 50 larger, the breathability of the diaper 1 can be ensured with a smaller number of through-holes 50. Further, since the through-hole 50 can be further perforated in the lateral direction by the elastic member 35 in the contracted state even before wearing, a guardian or the like who wears the diaper 1 on a wearer such as an infant can visually recognize the through-hole 50 in appearance, and can recognize improvement in air permeability. The contracted elastic member 35 pulls the nonwoven fabric around the through-hole 50, thereby forming a plurality of wrinkles extending along the contour of the through-hole 50 around the through-hole 50. The skin feel of the diaper 1 can be made softer by the plurality of wrinkles. In particular, when the through-hole is formed by cutting within a predetermined range, the periphery of the through-hole is opened in a substantially flat state, whereas in the present embodiment, the through-hole 50 is formed by the linear slit S, and therefore, the nonwoven fabric pulled by opening the hole is raised around the through-hole 50 to form a plurality of wrinkles. Therefore, the skin feel of the diaper 1 can be further improved.

the through-hole 50 of the back-side outer package member 40 is also formed in the same manner as the through-hole 50 of the stomach-side outer package member 30. In the present embodiment, the description has been given taking into consideration the case where the through holes 50 of the front-side outer package member 30 and the through holes 50 of the back-side outer package member 40 are individually formed, but the present invention is not limited to this. The front outer package member 30 and the back outer package member 40 may be formed integrally, and after the through hole 50 is formed, the front outer package member 30 and the back outer package member 40 may be separated. The slits S may be formed after the absorbent body 10 and the sheet member 34 are overlapped with the abdomen-side outer package member 30, or the absorbent body 10 and the sheet member 34 may be overlapped with the abdomen-side outer package member 30 after the slits S are formed in the abdomen-side outer package member 30. Similarly, the slits S may be formed after the absorbent body 10 and the sheet member 44 are overlapped with the back-side outer package member 40, or the absorbent body 10 and the sheet member 44 may be overlapped with the back-side outer package member 40 after the slits S are formed in the back-side outer package member 40.

next, the structure of the through-hole 50 will be described. As shown in fig. 2, the plurality of through holes 50 of the abdomen-side outer package member 30 are provided in the region of the abdomen-side outer package member 30 where the folded back portion 32f, the sheet member 34, and the absorbent body 10 are not provided. Specifically, the region provided below the end portion 30e in the longitudinal direction and below the lower end of the sheet member 34 is provided outside the absorbent body 10 in the lateral direction. The through holes 50 are arranged on one side and the other side of the stomach-side outer package member 30 in the lateral direction so as to be bilaterally symmetrical with respect to the lateral center a-a.

The through-hole 50 is provided in a region below the uppermost upper elastic member 35t of the stomach-side outer package member 30 and above the lowermost elastic member 35u of the stomach-side elastic member 30 in the longitudinal direction. The through-hole 50 makes a part of the continuous elastic member 35m and a part of the side portion elastic member 35s discontinuous. This is because, as described above, the continuous elastic member 350 is cut together with the continuous skin side sheet and the continuous skin side sheet 320 when the through-holes 50 are formed. The upper elastic member 35t and the lowermost elastic member 35u are not discontinuous by the through-hole 50.

The number of the elastic members 35 that are discontinuous due to the through-holes 50 differs between a region above the upper end 11ta of the absorbent body 11 and a region below the upper end 11ta of the absorbent body 11. That is, the through-hole 50 is formed so that the elastic member 35 is discontinuous in a region below the upper end 11 ta. On one lateral side, for example, on the left side of fig. 2, 1 elastic member 35 is discontinuous in a region above the upper end 11ta, whereas 3 elastic members 35 are discontinuous in a region below the upper end 11ta due to the through-hole 50.

in the present embodiment, the plurality of through holes 50 are arranged in a staggered manner. Fig. 5 is an enlarged view of a portion B of fig. 2. Fig. 5 shows a through hole (1 st through hole) 50a, a through hole (2 nd through hole) 50b located diagonally above and to the left of the through hole 50a and adjacent to each other in the longitudinal direction, a through hole (3 rd through hole) 50c located above the through hole 50a and overlapping with the through hole 50a in the lateral direction, and a through hole 50d located to the left of the through hole 50a in the lateral direction and overlapping with the through hole 50a in the longitudinal direction. Further, the elastic member 35a overlaps the through-hole 50a and the through-hole 50d in the longitudinal direction, and similarly, the elastic member 35b overlaps the through-hole 50b in the longitudinal direction, and the elastic member 35c overlaps the through-hole 50c in the longitudinal direction. In the longitudinal direction, the elastic member 35d is provided in a lower region than the through hole 50a, the elastic member 35e is provided between the through hole 50a and the through hole 50b, and the elastic member 35f is provided between the through hole 50b and the through hole 50 c. The elastic members 35d, 35e, and 35f do not overlap any of the through holes 50 in the vertical direction. The elastic member 35c is a continuous elastic member 35m, the elastic members 35a, 35b, 35e, and 35f are side portion elastic members 35s, and the elastic member 35d is a lowermost elastic member 35 u.

As shown in fig. 5, each through-hole 50 has a substantially rhombic shape, and the inside of the through-hole 50 penetrates to the non-skin side. At this time, in the lateral direction, the lateral apexes of the substantially rhomboid shape and the cut ends of the elastic members 35 are substantially at the same positions. The cut elastic member 35 is not provided inside each through hole 50, and the cut elastic member 35 is discontinuous in the through hole 50 in the lateral direction. This is because the elastic member 35 provided at the formation position of the through-hole 50 is cut together when the through-hole 50 is formed. Therefore, for example, the elastic member 35a is continuous from a region laterally outside the through hole 50a to laterally outside the through hole 50d, and is not provided inside the through hole 50a and inside the through hole 50 d. Similarly, the elastic member 35b is not provided in the through hole 50b, and the elastic member 35c is not provided in the through hole 50 c.

Further, no adhesive or the like is provided in a rectangular region (lower left diagonal portion in fig. 5) surrounded by a side g extending in the lateral direction and a side h extending in the longitudinal direction, which are circumscribed about each through-hole 50. In the present embodiment, the skin side sheet 31 and the non-skin side sheet 32 are joined by an adhesive applied to the elastic member 35.

In the present embodiment, the through holes 50 have substantially the same size, and the through holes 50a and the through holes 50c overlap in the lateral direction when viewed in the vertical direction. When the distance in the longitudinal direction between the lower end of the through-hole 50a and the lower end of the through-hole 50c is L1 and the length in the longitudinal direction of the through-hole 50 is L2, L1 is greater than L2(L1 > L2).

The length L3 in the longitudinal direction of the elastic member discontinuous by the through-hole 50 and the elastic member adjacent to the elastic member discontinuous in the longitudinal direction and not discontinuous by the through-hole 50 is shorter than the length L2 of the through-hole 50 (L3 < L2). For example, the distance L3 between the elastic member 35a and the elastic member 35e is smaller than the length L2 of the through hole 50a in the longitudinal direction.

The number of the through holes 50 overlapping the elastic member 35 in the lateral direction can be arbitrarily changed. For example, in the present embodiment, the number of the through holes 50 overlapping the elastic member 35a in the lateral direction is 3, whereas the number of the through holes 50 overlapping the elastic member 35b in the lateral direction is two.

The structure of the through hole 50 of the front outer package member 30 is described, but the structure of the through hole 50 of the back outer package member 40 is also substantially the same as the structure of the through hole 50 of the front outer package member 30. Like the plurality of through holes 50 of the front outer package member 30, the plurality of through holes 50 of the back outer package member 40 are also arranged laterally symmetrically with respect to the lateral center a-a on one side and the other side in the lateral direction. The slits S may be formed after the absorbent body 10 and the sheet member 34 are overlapped with the abdomen-side outer package member 30, or the absorbent body 10 and the sheet member 34 may be overlapped with the abdomen-side outer package member 30 after the slits S are formed in the abdomen-side outer package member 30. Similarly, the slits S may be formed after the absorbent body 10 and the sheet member 44 are overlapped with the back-side outer package member 40, or the absorbent body 10 and the sheet member 44 may be overlapped with the back-side outer package member 40 after the slits S are formed in the back-side outer package member 40.

< < < effectiveness in relation to diaper 1 of the present embodiment > >)

The through-hole 50 of the diaper 1 of the present embodiment can improve air permeability by penetrating from the skin side to the non-skin side, and can adjust the tension of the elastic member 35 by cutting the elastic member 35.

For example, the case of the through-hole 50a and the through-hole 50d overlapping the elastic member 35a in the longitudinal direction in fig. 5 will be described. The elastic members 35a and 35e are elastic members made of the same material, and are joined and fixed to the skin-side sheet 31 and the non-skin-side sheet 32 in the same stretched state before the slits S (the through holes 50a and 50d) are formed. The elastic member 35a is cut by the slits S (the through hole 50a and the through hole 50d), and the elastic member 35e is not cut by any of the slits S. Therefore, when Te is defined as the magnitude of the tension in the lateral direction of the elastic member 35e adjacent to the elastic member 35a in the longitudinal direction, and Ta1 is defined as the magnitude of the tension in the lateral direction of the portion of the elastic member 35a provided from the left side (center side) of the through hole 50d to the position overlapping the absorber 11 in the thickness direction, the tension Ta1 is smaller than the tension Te (Ta1 < Te). Similarly, when the magnitude of the tension in the lateral direction of the portion of the elastic member 35a located between the through-hole 50d and the through-hole 50a is Ta2, the tension Ta2 is smaller than the tension Te (Ta2 < Te) and smaller than the tension Ta1(Ta2 < Ta 1).

Further, since the elastic member 35a is discontinuous due to the through holes 50a and 50d, the elastic member 35a can expand and contract more freely when a force is applied in the longitudinal direction and the lateral direction than when it is continuous. That is, compared to the case of continuous movement, the portion of the elastic member 35a on the left side of the through hole 50d and the portion of the elastic member 35a between the through hole 50a and the through hole 50d can expand and contract more freely with movement, and therefore, the elastic member can easily follow not only movement in the lateral direction but also movement in the vertical direction. This improves the fit of the diaper 1 to the abdomen and buttocks.

By providing the elastic member 35 cut by the slit S (through hole 50) and the elastic member 35 not cut by the slit S (through hole 50) in this manner, the tension of the elastic member 35 can be adjusted, and therefore, the fit of the diaper 1 can be improved while securing the tightening of the waist and reducing the possibility of excessive tightening.

In the diaper 1 of the present embodiment, the through-hole 50 does not overlap the elastic member 35t located on the uppermost side of the diaper 1 in the longitudinal direction. That is, the elastic member 35t is not discontinuous by the through-hole 50. Therefore, since the uppermost elastic member 35t is not cut and a continuous elastic member can be maintained in the waist opening 1HB, even when the through-hole 50 is formed to improve air permeability, the tightening force of the elastic member 35t can be secured at the waist of the wearer when the wearer wears the diaper, and the possibility of leakage of excrement or the like due to insufficient tightening of the waist opening 1HB can be reduced.

Further, the through-hole 30a overlaps with the elastic member 35a in the transverse direction, but does not overlap with the elastic members 35d, 35e adjacent to the elastic member 35a in the longitudinal direction. The elastic member 35a is discontinuous in the through hole 50 a. Therefore, the through-hole 50a is easily opened by the contraction action of the discontinuous elastic member 35 a. Further, even when a force is applied in the vertical direction to the diaper 1 such as when the wearer intends to wear the diaper 1, since the elastic members 35d and 35e are provided without being discontinuous by the through-holes 50, the possibility that the periphery of the through-hole 50a is cracked at a position lower than the elastic member 35d or at a position upper than the elastic member 35e by the force applied from the outside can be reduced. Further, by providing the elastic members 35d and 35e that are not discontinuous due to the through holes 50, the tightening of the abdomen and the buttocks of the wearer can be secured, and the possibility of dropping the diaper 1 or shifting the wearing position can be reduced.

In the present embodiment, the front end of the absorbent body 10 is joined to the front outer cover member 30 so as to overlap therewith, the rear end is joined to the rear outer cover member 40 so as to overlap therewith, and the through-holes 50 are provided in a region below the front end of the absorbent body 10 or a region below the rear end thereof. Further, the sheet member 34 positioned closer to the skin side than the absorbent body 10 is provided on the upper portion of the abdomen-side outer package member 30, and the upper end of the absorbent body 10 is provided between the upper end and the lower end of the sheet member 34 in the longitudinal direction, and the through hole 50 is provided in the region lower than the lower end of the sheet member 34. Thus, since the through-holes 50 are formed on the lower side of the diaper 1, the through-holes 50 can be formed in the region near the inguinal portion where the wearer is more likely to sweat, and breathability can be improved. Further, by not forming the through-holes 50 on the upper side of the diaper 1, the tightening force of the waist portion of the wearer can be ensured, and the possibility of leakage of excrement or the like from the waist opening 1HB can be reduced.

In the present embodiment, the lowermost elastic member 35u disposed in a region below the continuous elastic member 35m and the side elastic member 35s and farthest from the continuous elastic member 35m and the side elastic member 35s does not overlap the through hole 50 in the longitudinal direction. Accordingly, since not only the upper elastic member 35t but also the lowermost elastic member 35u are not discontinuous by the through-holes 50, the conformability of the leg hole opening 1HL can be ensured, and the possibility of leakage of excrement or the like from the leg hole opening 1HL can be reduced.

In the present embodiment, the through-holes 50 are provided on the lateral outer side of the absorbent body 11, and the lateral elastic members 35s are not continuous even in the region where the absorbent body 11 and the lateral elastic members 35s overlap in the lateral direction. That is, the side portion elastic members 35s are discontinuous in the region overlapping the absorbent body 11 in the vicinity of the widthwise center, and the effect of expansion and contraction in the widthwise direction on the absorbent body 11 is suppressed. Thus, since the side elastic members 35s are required to tighten the diaper 1 in a narrower range than the continuous elastic member 35m, the contractive force in the narrower range may be excessively increased. Therefore, by providing the side elastic members 35s that are discontinuous by the through holes 50, it is possible to provide the diaper 1 capable of appropriately tightening the waist, abdomen, and buttocks while reducing excessive pressure of the elastic members 35 on the skin of the wearer.

in the present embodiment, the abdominal-side outer package member 30 has the skin-side sheet 31 and the non-skin-side sheet 32, the elastic member 35 is disposed between the skin-side sheet 31 and the non-skin-side sheet 32, and the adhesive is not provided at least in a rectangular region formed by a side g that circumscribes the through hole 50 and extends in the lateral direction and a side h that extends in the longitudinal direction. This reduces the possibility that the periphery of the through-hole 50 is hardened or the hole is insufficiently formed in the rectangular region due to the curing of the adhesive. Further, since the adhesive is not cured, the periphery of the through-hole 50 is appropriately wrinkled due to the original flexibility of the material such as nonwoven fabric, and a softer skin feel can be achieved.

In the present embodiment, the through-hole 50b is adjacent to the through-hole 50a in the longitudinal direction, and the elastic member 35e as another elastic member is provided between the through-hole 50a and the through-hole 50b in the longitudinal direction. Thus, even when the tightening force is reduced by providing the elastic members 35a and 35b that are discontinuous due to the through holes 50a and 50b, the tightening force of the diaper 1 can be ensured by providing the elastic member 35e that is adjacent to the elastic members 35a and 35b in the longitudinal direction and is not discontinuous due to the through holes 50, and the possibility of the diaper 1 falling off or the like when worn can be reduced.

In the present embodiment, the through-holes 50a and 50c at least partially overlap in the lateral direction, and the distance L1 in the longitudinal direction between the through-holes 50a and 50c is longer than the length (L2) of each of the through-holes 50a and 50 c. This reduces the possibility of the periphery of the through-hole 50a and the periphery of the through-hole 50c cracking even when a force in the vertical direction is applied to the diaper 1 when the diaper is worn or the like.

The effectiveness of the diaper 1 has been described using the abdomen-side outer package member 30, but the back-side outer package member 40 is also the same.

Other embodiments are also possible

The embodiments of the present invention have been described above, and the above embodiments are intended to facilitate understanding of the present invention, and are not intended to limit the present invention. It is to be understood that the present invention can be modified and improved without departing from the gist thereof, and the present invention encompasses equivalent technical means. For example, the following modifications can be made.

In the above-described embodiment, the through-holes 50 are formed in the front-side outer package member 30 and the rear-side outer package member 40, respectively, but the present invention is not limited thereto. The through-hole 50 may be formed in either the front-side outer package member 30 or the rear-side outer package member 40. However, the ventilation properties of the diaper 1 can be further improved by forming the through-holes 50 in both the front-side outer cover member 30 and the back-side outer cover member 40.

fig. 6 is a plan view of diaper 100 according to another embodiment, as viewed from the skin side. As shown in fig. 6, the through-holes 50 may be provided only on the lower side where sweat is more likely to be produced, or the through-holes 50 may be arranged along the groin of the wearer. As shown in fig. 6, the through-holes 50 of the front outer package member 30 and the through-holes 50 of the back outer package member 40 may be arranged substantially in the same manner.

In the above-described embodiment, the sheet member 34 is provided on the skin side of the abdomen-side outer package member 30, and the sheet member 44 is provided on the skin side of the back-side outer package member 40, but the present invention is not limited thereto. The sheet members 34 and 44 may be provided on either the front-side outer package member 30 or the back-side outer package member 40, or both the sheet members 34 and 44 may not be provided.

In the above-described embodiment, the through-hole 50 is provided in a region below the upper end of the absorbent body 10, and more preferably in a region below the lower end of the sheet member 34, but the present invention is not limited thereto. The through-hole 50 may be formed in a region above the sheet member 34 and a region above the absorbent body 10. The through-holes 50 can be appropriately arranged in the abdomen, the hip, and other portions that are more likely to sweat. However, by providing the region below the absorbent main body 10 and the region below the lower end of the sheet member 34, the possibility of a decrease in the strength of the diaper 1 with respect to the vertical force can be reduced.

In the above embodiment, the lowermost elastic member 50u is not discontinuous by the through-hole 50, but the present invention is not limited thereto. The lowermost elastic member 50u may not be continuous. However, in order to improve the fit of the leg hole opening 1HL, it is more preferable that the lowermost elastic member 50u is not discontinuous by the through hole 50.

In the above-described embodiment, the through-hole 50 is formed by forming a linear slit extending in the longitudinal direction, but the present invention is not limited thereto. The through-hole may be formed by cutting a range of a predetermined area, or a slit having a curved shape may be formed.

In the above embodiment, each through-hole 50 is formed by making 1 elastic member 35 discontinuous in the lateral direction, but the present invention is not limited thereto. The elastic member 35 does not necessarily have to be discontinuous in all the through holes 50, and the structure may include the elastic member 35 continuous in the through holes 50, or may include the through holes 50 formed in the region where the elastic member 35 is not provided.

The diaper 1 of the above embodiment is intended to be worn by infants, but is not limited thereto, and may be intended to be worn by adults. In the above-described embodiment, the disposable diaper 1 of a so-called 3-sheet type is exemplified as an example of the absorbent article, but the present invention is not limited thereto. For example, a two-piece disposable diaper having an outer sheet including a stomach-side portion, a crotch portion, and a back-side portion as a1 st member, and an absorbent body fixed to a skin-side surface of the outer sheet as a2 nd member, and a tape-type disposable diaper may be used.

Description of the reference numerals

1. 100, diapers (absorbent articles); 1HB, waist opening; 1HL, a leg circumference opening; 10. an absorbent main body; 10e, a transverse end; 11. an absorbent body; 11ta, 11tb, upper end; 13. a surface sheet member; 15. a back sheet member; 30. a ventral outer package member (ventral portion); 30c, part; 30e, end portion; 30s, area; 30et, ventral upper end; 30se, a ventral outer package member side edge portion; 31. a skin side sheet; 32. a non-skin side sheet; 32f, a folded back portion; 34. a sheet member; 35. an elastic member; 35t, an upper elastic member; 35m, continuous elastic member (lower elastic member); 35s, a side portion elastic member (lower side elastic member); 35u, a lowermost elastic member; 40. a back-side outer package member (back-side portion); 40c, part; 40e, end portion; 40s, area; 40et, dorsal upper end; 40se, a back-side outer package member side edge portion; 41. a skin side sheet; 42. a non-skin side sheet; 42f, a folded back portion; 44. a sheet member; 45. an elastic member; 45t, upper elastic member; 45m, continuous elastic member (lower elastic member); 45s, a side portion elastic member (lower side elastic member); 45u, the lowermost elastic member; 50. a through hole; 50a, a through-hole (1 st through-hole); 50b, a through hole (2 nd through hole); 50c, a through hole (3 rd through hole); 50d, through holes; 300. a band-shaped ventral outer package member; 310. a band-shaped skin side sheet; 350. an elastic member; c10, center; s, a slit.

Claims (8)

1. An absorbent article having a longitudinal direction and a transverse direction orthogonal to each other,

The absorbent article includes:

A ventral portion provided on the ventral side of the wearer;

A back side portion provided on a back side of the wearer; and

A plurality of elastic members provided in at least one of the abdominal section and the back section, the plurality of elastic members including an upper elastic member and a lower elastic member, the absorbent article being characterized in that,

the upper elastic member is located uppermost among the plurality of elastic members in the longitudinal direction, and the lower elastic member is located lower than the upper elastic member,

a through hole penetrating from a skin side to a non-skin side in the longitudinal direction does not overlap with the upper elastic member,

A through hole penetrating from a skin side to a non-skin side in the longitudinal direction does not overlap with the elastic member adjacent to the lower elastic member but overlaps with the lower elastic member,

the lower elastic member is discontinuous within the through hole in the transverse direction.

2. The absorbent article according to claim 1,

the absorptive article is provided with an absorptive main body,

One end of the absorbent main body is overlapped and joined to the abdomen side portion, and the other end is overlapped and joined to the back side portion,

The through-hole is provided in a region below the one end edge or below the other end edge of the absorbent main body.

3. the absorbent article according to claim 2,

A sheet member located on the skin side of the absorbent main body is provided on the upper part of the abdomen-side part or the back-side part,

In the longitudinal direction of the machine,

An end edge of the absorbent main body is provided between the upper end and the lower end of the sheet member,

The through hole is provided in a region below the lower end of the sheet member.

4. The absorbent article according to any one of claims 1 to 3,

The absorbent article is provided with a lowermost elastic member disposed in a region below the lower elastic member and farthest from the lower elastic member,

in the longitudinal direction, the through-hole that penetrates from the skin side to the non-skin side does not overlap with the lowermost elastic member.

5. The absorbent article according to any one of claims 1 to 3,

The absorbent article has an absorbent main body having an absorber for absorbing excrement,

The through-holes are provided on the outer side of the absorber in the lateral direction,

The lower elastic member is also discontinuous in a region where the absorbent body and the lower elastic member overlap in the lateral direction.

6. the absorbent article according to any one of claims 1 to 3,

the ventral portion and the dorsal portion each have a skin-side sheet and a non-skin-side sheet,

The lower elastic member is disposed between the skin-side sheet and the non-skin-side sheet,

No adhesive is provided at least in a rectangular region formed by a side circumscribed to the through-hole and extending in the lateral direction and a side extending in the longitudinal direction,

The skin-side sheet and the non-skin-side sheet are joined together by an adhesive provided on the lower elastic member.

7. the absorbent article according to any one of claims 1 to 3,

When the through hole is set to the 1 st through hole,

The absorptive article is provided with a2 nd through hole different from the 1 st through hole,

The 2 nd through hole is adjacent to the 1 st through hole in the longitudinal direction,

Another elastic member is provided between the 1 st through hole and the 2 nd through hole in the longitudinal direction.

8. the absorbent article according to any one of claims 1 to 3,

When the through hole is set to the 1 st through hole,

The absorptive article is provided with a 3 rd through hole different from the 1 st through hole,

the 1 st through hole and the 3 rd through hole at least partially overlap in the lateral direction,

A distance in the longitudinal direction between the 1 st through hole and the 3 rd through hole is longer than a length of each of the 1 st through hole and the 3 rd through hole.