WO2011125811A1

WO2011125811A1 - Disposable diaper

Info

Publication number: WO2011125811A1
Application number: PCT/JP2011/058167
Authority: WO
Inventors: 賢一笹山; 誠市川; 邦彦桂川
Original assignee: ユニ・チャーム株式会社
Priority date: 2010-03-31
Filing date: 2011-03-31
Publication date: 2011-10-13
Also published as: JP5385201B2; JP2011212340A

Abstract

Disclosed is a disposable diaper that can be disposed of rolled, folded, or the like. A barrier flap (60L, 60R) is formed on each side of a groin region (8) of the disposable diaper (1). Each of the barrier flaps (60L, 60R) is in the state of being folded in the widthwise direction (X) of the diaper (1), and the folded barrier flaps (60L, 60R) are each attached detachably to themselves at the ends (60a, 60b) in the lengthwise direction (Y). When the barrier flaps (60L, 60R) that are folded and mutually attached at each end (60a, 60b) are each detached and the barrier flaps (60L, 60R) are extended in a manner so that the proximal edge (62) of the barrier flaps (60L, 60R) faces inward in the widthwise direction (X), the barrier flaps (60L, 60R) partially overlap.

Description

Disposable diapers

This invention relates to a disposable diaper.

Disposable diapers that have been improved so that diapers after use can be disposed of in a preferable form from the viewpoint of hygiene or appearance are conventionally known or well known. For example, in a disposable diaper 1 disclosed in Japanese Utility Model Publication No. 58-22908 (Patent Document 1), an adhesive tape piece is attached to a back sheet. In one example of the diaper, one end of the adhesive tape piece is fixed to the center of the waist, and the free end extends outward from the waist. A folded diaper after use can be secured with a piece of adhesive tape to prevent it from opening.

In the disposable pants-type diaper disclosed in Japanese Patent Application Laid-Open No. 2002-11041 (Patent Document 2), an adhesive tape piece is attached to a crotch region where no gathering occurs due to contraction of an elastic member. A diaper folded in two in the vertical direction after use can be stopped with a piece of adhesive tape so that it does not open.

The fastener system disclosed in Japanese Patent Laid-Open No. 2-4372 (Patent Document 3) is used for absorbent products such as disposable diapers. For example, in an open diaper, an adhesive tape tab, which is an example of a fastener system, is attached to both sides of the rear waistline region. A diaper that is rolled or folded after use can be secured using an adhesive tape tab so that it does not open.

Japanese Utility Model Publication No. 58-22908 JP 2002-11041 A Japanese Patent Laid-Open No. 2-4372

After rolling or folding a dirty diaper after defecation after use, keeping the diaper with a piece of tape, such as an adhesive tape, to prevent it from opening is a small diaper for infants It is particularly effective when it is to be disposed of in a sanitary favorable form. However, depending on the diaper, it may be difficult to roll a dirty diaper into a hygienic preferred shape by simply using a piece of tape.

According to the present invention, it is possible to provide a disposable diaper that makes it possible to dispose of a dirty diaper after being rolled up or folded into a sanitary favorable shape.

In order to solve the above problems, the present invention provides a front waistline region, a rear waistline region, a length direction interposed between both regions, and extending toward the front waistline region and the rear waistline region, The disposable diaper includes a crotch region having a width direction orthogonal to the length direction, and barrier flaps extending in the length direction on both sides of the width direction of the crotch region.

In such disposable diapers, the features of the present invention are as follows. That is, the barrier flap is integrated with the crotch region, and has a distal edge extending in the length direction, parallel to the distal edge and close to the skin of the wearer of the disposable diaper. The folded barrier flaps are detachably joined to both end portions of the barrier flap in the length direction. The barrier flaps may also be formed by peeling the barrier flaps joined at both ends and extending the proximal edge toward the inner side in the width direction so that the barrier flaps formed on both sides are mutually connected. Partially overlap.

In one embodiment of the present invention, the diaper includes a front panel that forms the front waistline region, a rear panel that forms the rear waistline region, and a central panel that forms the crotch region, and these panels Each includes an inner surface facing the wearer's skin and an outer surface facing the garment. One end of both ends of the central panel in the length direction has the outer surface joined to the inner surface of the front panel, and the other end of the both ends has the outer surface on the inner surface of the rear panel. It is joined. The central panel is formed with the barrier flaps on both sides in the width direction, and the barrier flaps folded at the both ends of the barrier flap are detachably joined to each other.

In another embodiment of the present invention, the barrier flap maintains the overlapping state of the barrier flaps partially overlapping when the barrier flap is extended inward in the width direction. A joining means is formed which enables it.

In another embodiment of the present invention, the central panel is formed to be peelable from the front panel and the rear panel.

In another embodiment of the present invention, the disposable diaper is of a pants type, and the front panel and the rear panel are detachably joined to each other at the side edges.

In the disposable diaper according to the embodiment of the present invention, both end portions of the barrier flap are in a folded state. At both ends, barrier flaps that are folded and overlapped are joined to each other so as to be peelable. When the ends of the joined barrier flaps are peeled off and the barrier flaps are extended so that the proximal edge of the barrier flaps faces inward in the width direction of the diaper, the barrier flaps formed on both sides of the crotch region are removed. The inner surface of the crotch region that partially overlaps each other and is contaminated with excrement can be covered. If the diaper is rolled or folded after extending the barrier flap in this way, when the diaper is discarded, it is possible to prevent the inner surface of the crotch region that is contaminated with excrement from being exposed.

The partial fracture top view of a disposable diaper. The figure which shows the II-II line | wire cut surface of FIG. The figure which shows the III-III line | wire cut surface of FIG. The figure which shows the state which coat | covered a part of inner surface of a crotch region with the barrier flap. The figure similar to FIG. 2 which shows an example of embodiment. The figure which shows the use condition of the joining means formed in the barrier flap. The perspective view of a pants-type disposable diaper. The partial broken top view of the expansion | deployment diaper obtained from the diaper of FIG. The figure which shows the IX-IX line | wire cut surface of FIG. The figure which shows the XX ray cut surface of FIG. The figure which shows the state which coat | covered the inner surface of a crotch area with the barrier flap.

Embodiments of the present invention will be described with reference to the accompanying drawings as follows.

FIG. 1 is a partially broken plan view of an open-type disposable diaper 1 which is an example of an embodiment. The diaper 1 has a chassis 2 and an excretion holding area 4 for excrement, and the length direction and the width direction of the chassis 2 and the absorption holding area 4 are indicated by double-headed arrows X and Y.

In the chassis 2 of the diaper 1, the inner sheet 21 and the outer sheet 22 are joined via a hot melt adhesive 23, and are located between the front waistline area 6, the rear waistline area 7, and both these

areas

6, 7. The crotch region 8 is formed. The inner sheet 21 forms a part of the inner surface of the diaper 1 facing the skin of the diaper wearer (not shown) in the front and

rear waist areas

6 and 7 and both side portions 8a of the crotch area 8, and the outer sheet 22 The outer surface of the diaper 1 that faces the clothes of the diaper wearer is formed. In the front waistline region 6, the waistline elastic member 24 and the auxiliary elastic member 26 extending in the width direction X are between the inner sheet 21 and the outer sheet 22, and a hot melt adhesive (not shown) is attached to at least one of the

sheets

21 and 22. Z)). In the rear waist region 7, a waist elastic member 27 and an auxiliary elastic member 28 extending in the width direction X are between the inner sheet 21 and the outer sheet 22, and a hot melt adhesive (see FIG. (Not shown). A fastener tape 7b extends from each of the side edge portions 7a of the rear waistline region 7. A mechanical fastener 7c is attached to the inner surface of the tape 7b, and the tape 7b can be attached to and detached from a landing zone (not shown) in the front waistline region 6. At both side portions 8a of the crotch region 8, the leg-hole elastic member 29 extends while being curved, and is joined to at least one of the inner sheet 21 and the outer sheet 22 in a stretched state via a hot melt adhesive (not shown). is doing. For the inner sheet 21 and the outer sheet 22, a nonwoven fabric or a moisture permeable plastic film formed of thermoplastic synthetic fibers can be used. The chassis 2 in the illustrated example is formed symmetrically with respect to a center line CC that bisects the dimension in the width direction X.

The absorption holding area 4 is attached to the inner sheet 21 via a hot melt adhesive 41 (see FIGS. 3 and 4), and forms a central portion in the width direction X of the crotch area 8, and the center line C− It has both side edges 42 parallel to C, and a front end edge 43a and a rear end edge 43b that intersect both side edges 42 and extend in the width direction X, and form part of the inner surface of the diaper 1. A barrier flap 60 extending between both

end edges

43a and 43b is formed inside each side edge 42 in the width direction X. The barrier flap 60 includes a barrier flap 60L and a barrier flap 60R. The barrier flap 60 includes a distal edge 61 extending in the longitudinal direction Y in correspondence with each of the side edges 42, a front end portion 60a including a front end edge 43a, a rear end portion 60b including a rear end edge 43b, and both ends thereof. And an intermediate portion 60c located between the

portions

60a and 60b. The barrier flap 60 also has a proximal edge 62 that extends in the longitudinal direction Y parallel to the distal edge 61. A sleeve 63 is formed on the proximal edge 62, and an elastic member 64 extending in the longitudinal direction Y is attached to the inside of the sleeve 63 in an extended state via a hot melt adhesive (not shown). Thus, the proximal edge 62 can elastically contact the skin of the diaper wearer (not shown). In the absorption holding region 4, the outline of a core material 45 described later is indicated by a chain line. The absorption holding area 4 in the illustrated example is formed symmetrically with respect to the center line CC.

FIG. 2 shows the structure of the absorption holding region 4 and the intermediate portion 60c of the barrier flap 60 by the section taken along the line II-II in FIG. The absorption holding region 4 includes a liquid-absorbing core material 45, a liquid-permeable inner surface sheet 46 that covers the inner surface of the core material 45, and a water-impermeable or water-repellent outer sheet 47 that covers the outer surface of the core material 45. And a liquid-impervious and liquid-permeable barrier sheet 48 interposed between the outer sheet 47 and the core member 45. The inner surface sheet 46 faces the skin of the diaper wearer when the diaper 1 is worn, and forms a part of the inner surface of the crotch region 8. The outer surface sheet 47 forms a barrier flap 60 L by bending a portion extending in the width direction X from the side edge 45 a of the core member 45 at the side edge 42 of the absorption holding area 4.

The core material 45 is formed of an aggregate of water-absorbing material such as pulverized pulp, a mixture of pulverized pulp and highly water-absorbing polymer particles, or a structure obtained by coating the aggregate with a water-permeable sheet such as tissue paper.

The inner surface sheet 46 has a size extending from the peripheral edge of the core material 45, and is folded along the core material 45 in the width direction X so as to be formed on the outer surface of the core material 45. It covers a part. In the length direction Y, the inner surface sheet 46 extends from the core material 45 (see FIG. 1), and overlaps with the outer surface sheet 47 extending from the core material 45 in the same manner as the inner surface sheet 46. They are joined to each other through 47a. The inner surface sheet 46 and the core material 45 may be joined via a hot melt adhesive or may not be joined, and the latter case is shown in the figure.

The barrier sheet 48 has dimensions in the width direction X and the length direction Y that are substantially the same as the dimensions of the core material 45, and is bonded to the core material 45 via a hot melt adhesive. There are cases where it does not. In the figure, the barrier sheet 48 is bonded to the core member 45 and the inner surface sheet 46 via a hot melt adhesive 48a.

The outer surface sheet 47 has a size extending from the periphery of the core material 45. In the width direction X, the part where the outer surface sheet 47 extends from the core material 45 forms a barrier flap 60, and in the length direction Y, the part where the outer surface sheet 47 extends from the core material 45 (not shown). ) Is bonded to the inner sheet 46 via a hot melt adhesive 47a. The outer sheet 47 is also bonded to the inner sheet 21 of the chassis 2 via a hot melt adhesive 41. The inner surface sheet 21 is bonded to the outer surface sheet 22 via a hot melt adhesive 23.

Of the barrier flaps 60, the barrier flap 60L is formed by folding the outer surface sheet 47 into an inverted Z-shape at one of the side edges 42 in the absorption holding region 4. The barrier flap 60R is formed by folding the outer sheet 47 into a Z shape (not shown) at the other side of the side edges 42 (see FIG. 1). The folded barrier flap 60 L is folded at the side edge 42 to define a distal edge 61, and is folded toward the outside in the width direction X to overlap the portion 67. Including. In the diaper 1 of FIG. 1 having such a barrier flap 60L, when the crotch region 8 is curved in the longitudinal direction Y when the diaper 1 is worn, the elastic member 64 in the barrier flap 60L contracts and overlaps the portion 67. And the portion 68 extend so that the barrier flap 60L stands up from the inner surface of the diaper 1 as shown by the phantom line in FIG. 2 so that the proximal edge 62 of the barrier flap 60L elastically contacts the diaper wearer's skin.

FIG. 3 shows the structure of the rear end 60b of the barrier flap 60L along the line III-III in FIG. The III-III line extends in the width direction X in the vicinity of the rear end edge 43 b of the absorption holding region 4. The state in which the core member 45, the inner surface sheet 46, the outer surface sheet 47, and the barrier sheet 48 overlap in the absorption holding region 4 is the same as the state in which they overlap in FIG. The state in which the inner sheet 21 and the outer sheet 22 overlap in the chassis 2 is also the same as the state in which they overlap in FIG. The barrier flap 60L is folded in an inverted Z shape similarly to that in FIG. 2, but the portion 67 where the barrier flap 60L is folded inward in the width direction X is the same as the inner sheet 46 in the absorption holding area 4. It is bonded to the outer sheet 47 through a hot melt adhesive 66 so as not to be peeled off. A portion 68 where the barrier flap 60L is folded outward in the width direction X is detachably bonded to a portion 67 of the barrier flap 60L facing the barrier flap 60L via a hot melt adhesive 69. However, the edge portion 66b of the portion 68 is on the extension of the proximal edge 62 in the length direction Y, and is not joined to the portion 67 facing the edge portion 66b.

Here, peeling when it is possible to peel off the diaper 1 means that as long as the diaper 1 is handled in accordance with a normal wearing method, peeling does not occur in the parts joined to each other, but for the required part of the diaper 1 If the force is intentionally applied, peeling occurs in the joined portions, and as a result, peeling means that the required purpose in the diaper 1 can be achieved. In addition, when the diaper 1 is simply joined or permanently joined, it means that as long as the diaper 1 is handled in accordance with a normal method, the parts joined to each other do not peel. This means that even if a force is intentionally applied to a required part in handling and use in the diaper 1, the force does not cause delamination. Moreover, when it says peeling in the diaper 1, it means that the parts joined to each other are peeled and separated at the part, and at least one part is broken in the vicinity of the parts joined to each other. It also means that the parts joined together are separated in a substantial sense and separated. In the diaper 1, making the jointed parts peelable or non-peelable means selecting the type of hot melt adhesive and adjusting the amount of hot melt adhesive applied per unit area. It is possible by adjusting the application area of the hot melt adhesive.

In the diaper 1 in which the barrier flap 60L is formed in this way, the chassis 2 or the absorption holding area 4 is grasped with one hand, and the edge 66b of the rear end 60b of the barrier flap 60L is grasped with the other hand, Alternatively, when the vicinity of the proximal edge 62 shown in FIG. 2 is picked up and pulled upward in the view shown by the arrow F in FIG. 3, the portion 68 in the barrier flap 60 can be peeled off from the portion 67. The dimension M in the width direction X of the portion 68 is adjusted so that the edge 66b can exceed the center line CC when the portion 68 is overlapped with the inner sheet 46 after peeling (see FIG. 3). When the portion 68 of the rear end portion 60b of the barrier flap 60L is thus overlapped with the inner surface sheet 46, the portion 68 of the intermediate portion 60c (see FIG. 1) of the barrier flap 60L is also shown in phantom lines in FIG. As shown, the inner edge sheet 46 can be overlaid with the proximal edge 62 beyond the center line CC.

The sectional structure of the front end portion 60a of the barrier flap 60L is substantially the same as the sectional structure of the rear end portion 60b in FIG. Also at the front end portion 60a, the barrier flap 60L is folded in an inverted Z shape, the portion 67 is joined to the inner sheet 46 through the hot melt adhesive 66 (see FIG. 3) so as not to be peeled off, and the portion 68 is hot. It is joined to the portion 67 through the melt adhesive 69 so as to be peelable. However, the edge portion 66 a (see FIG. 1) in the portion 68 is not joined to the portion 67. Therefore, at the front end 60a, as in the case of the rear end 60b, the edge 66a is picked or the portion 68 is removed by picking and pulling near the proximal edge 62 at the intermediate portion 60c of the barrier flap 60. The portion 67 can be peeled off. When the peeled portion 68 is overlapped with the inner surface sheet 46, it overlaps the center line CC, and the edge 66a exceeds the center line CC.

FIG. 4 is a view similar to FIG. 1 showing an example of a mode when the used diaper 1 is discarded. In the diaper 1 of FIG. 1, the absorption holding area 4 is formed symmetrically with respect to the center line CC. Therefore, with respect to the other barrier flap 60R that is symmetrical to the barrier flap 60L of FIGS. 2 and 3, the overlapping portion 67 and the portion 68 are separated from each other at the front end portion 60a, and the overlapping portion 67 is also formed at the rear end portion 60b. And the portion 68 can be peeled off, and the entire portion 68 of the barrier flap 60R can be overlaid on the inner sheet 46 of the absorbent holding area 4. The overlapped barrier flap 60R is as shown in phantom lines in FIGS. 2 and 3, and the barrier flap 60R overlaps the center line CC, with the proximal edge 62 and the edge 66b centered. Cross line CC. In FIG. 4, barrier flaps 60 L and 60 R are shown in which the portion 68 is superimposed on the inner sheet 46. That is, the barrier flaps 60L and 60R partially overlap each other in the vicinity of the center line CC, and a portion of the inner surface of the diaper 1 between the barrier flaps 60L and 60R, that is, the inner surface sheet 24 is the barrier flap. Covered by 60L and 60R.

If the diaper 1 is used, the inner sheet 46 of the absorption holding area 4 is covered with

barrier flaps

60L and 60R extended in the width direction X as illustrated in FIG. Whether it is a thing for adults or an adult, the inner sheet 46 is soiled and the excrement on the inner sheet 46 is hidden. Thereafter, the entire diaper 1 can be rounded or folded, and further, the diaper 1 can be kept rounded or folded using the fastener tape 7b.

In such an absorbent holding area 4 of the diaper 1, the inner sheet 46 is made of a water permeable sheet material such as a water permeable nonwoven fabric or a water permeable open plastic film formed of thermoplastic synthetic fibers. The outer sheet 47 is formed of a nonwoven fabric formed of thermoplastic synthetic fibers, more preferably a water-impermeable or water-repellent nonwoven fabric or a water-impermeable and moisture-permeable plastic film. When the outer sheet 47 is impermeable, the barrier sheet 48 can be omitted. The barrier sheet 48 is formed from a moisture permeable plastic film. In addition, the absorption holding region 4 is preferably formed symmetrically with respect to the center line CC, but may be asymmetrical with respect to the center line CC. For example, it is also possible to use the absorption holding area 4 having a mode in which the dimension in the width direction X of the portion 68 in the barrier flap 60L is different from the dimension in the width direction X of the portion 68 in the barrier flap 60R. However, also in the absorption holding region 4, when the portion 68 of the barrier flap 60 L and the portion 68 of the barrier flap 60 R are overlapped with the inner surface sheet 46, the

portions

68 and 68 overlap each other to cover the entire inner surface sheet 46. It is necessary to adjust the dimensions of each portion 68 so that it can.

In the diaper 1 of FIG. 1, the chassis 2 and the absorption holding region 4 that are joined to each other via the hot melt adhesive 41 form the inner surface of the crotch region 6 in the diaper 1 with the respective

inner surface sheets

21 and 46. However, both the

parts

2 and 4 can be joined in a peelable state. The state can be obtained by adjusting the application amount per unit area of the hot melt adhesive 41 or adjusting the application area of the hot melt adhesive 41. In such a diaper 1, the absorption holding area 4 which is soiled with excrement after use can be separated from the chassis 2 to separate the absorption holding area 4 and the chassis 2 from each other. It is preferable from the viewpoint of hygiene to cover the inner surface sheet 46 of the absorption holding area 4 with

barrier flaps

60L and 60R as illustrated in FIG.

5 and 6 are views similar to FIGS. 2 and 4 showing an example of the embodiment. In FIG. 5, an adhesive tape piece 80 is attached to a portion 68 of the diaper 1 that is folded in an inverted Z shape on the barrier flap 60L. The tape piece 80 is folded in a Z shape and has a first layer 81 facing the portion 68, a second layer 82 that overlaps the first layer 81, and a third layer 83 that overlaps the second layer 82. The first layer 81 is permanently bonded to the portion 68 via the first adhesive 91. The second layer 82 is detachably bonded to the first layer 81 via the first adhesive 92. The third layer 83 is detachably bonded to the second layer 82 via the second adhesive 93. When the tape piece 80 grips the tip portion 84 of the third layer 83 and pulls it diagonally upward in FIG. 5 indicated by the arrow G, the second layer 82 peels from the first layer 81, and the third layer 83 The layer 83 is peeled off from the second layer 82 so that the first layer 81 remains in the portion 68, and the first layer 81, the second layer 82, and the third layer 83 extend straight. It will be in the state.

FIG. 6 shows a state in which the barrier flaps 60L and 60R covering the inner sheet 46 of the absorption holding area 4 are sealed by a tape piece 80 extending in a straight line. In the vicinity of the center line CC, the barrier flaps 60L and 60R overlap so that the barrier flap 60R is on the bottom and the barrier flap 60L is on the top. The tape piece 80 attached to the barrier flap 60L is formed so that the third layer 83 reaches the barrier flap 60R beyond the proximal edge 62 of the barrier flap 60L when it is extended straight. Since the second adhesive 93 is applied to the surface of the third layer 83 facing the barrier flap 60R, the third layer 83 of the tape piece 80 is attached to the barrier flap 60R using the second adhesive 93. Can be fixed. In this way, the overlapping state of the barrier flaps 60L and 60R can be maintained by the tape piece 80, and the inner sheet 46 of the absorbent holding area 4 is reliably prevented from being exposed when the diaper 1 is discarded. Can do. The joining means for the barrier flap 60L and the barrier flap 60R for maintaining the state in which the barrier flap 60L and the barrier flap 60R overlap with each other is not limited to the tape piece 80 in the illustrated example. For example, an adhesive can be applied to the inner surface of the barrier flap 60L that overlaps the barrier flap 60R, and the adhesive can be used as a joining means for the barrier flap 60R.

In the embodiments so far, the barrier flap 60 has a three-layer structure folded so as to be Z-shaped or inverted Z-shaped. However, the barrier flap 60 is not a three-layer structure such as a two-layer structure or a four-layer structure. It can also be replaced with a structural one. The barrier flap 60 is formed by folding the outer sheet 47 in the absorption holding area 4. However, the inner sheet 21 of the chassis 2 and the inner sheet 46 of the absorption holding area 4 are separated from the outer sheet 47. And may be formed by folding the separate sheet. The barrier flap 60 formed of a sheet separate from the outer sheet 47 can have a different feel, breathability, and water impermeability from the outer sheet 47.

FIG. 7 is a perspective view of a pants-type disposable diaper 101 which is an example of the embodiment. The diaper 101 includes a front panel 106 that forms the front waistline region 6, a rear panel 107 that forms the rear waistline region 7, and a central panel 108 that forms the crotch region 8. The front panel 106 and the rear panel 107 are formed such that the

side edge portions

106a and 107a overlap each other in a palm-like manner, and are joined in a releasable manner in a plurality of intermittently formed joining regions 109, and an annular waistline region 111, A waist opening 112 is formed. The center panel 108 is joined to the inner surface of the front panel 106 in such a manner that the outer surface of the front end portion 108a can be peeled off or cannot be peeled off. The outer surface of the rear end portion 108b (see FIG. 8) of the central panel 108 is joined to the inner surface of the rear panel 107 in a peelable or non-peelable state. The central panel 108 and the front and

rear panels

106 and 107 form a pair of leg opening 113. In FIG. 7, the width direction, the length direction, and the vertical direction of the diaper 101 are indicated by double-headed arrows X, Y, and Z.

FIG. 8 shows a development obtained by unbonding the front panel 106, the rear panel 107, and the central panel 108 in a flat shape by releasing the joint in the joint area 109 between the front panel 106 and the rear panel 107 in the diaper 101 of FIG. It is a partial fracture top view of diaper 101a. The width direction and the length direction of the unfolded diaper 101a are the same as the width direction X and the length direction Y of the diaper 101.

The front panel 106 in the unfolded diaper 101a includes an inner sheet 121a and an outer sheet 122a that are joined to each other through a hot melt adhesive 123a so as not to be peeled off. Between the inner sheet 121a and the outer sheet 122a, there are a plurality of waistline elastic members 124a and a plurality of auxiliary elastic members 126a extending in parallel to each other in the width direction X, and these elastic members 124a and 126a are connected to the inner surface. At least one of the sheet 121a and the outer sheet 122a is joined in an extended state via a hot melt adhesive (not shown). The rear panel 107 includes an inner sheet 121b and an outer sheet 122b that are bonded to each other through a hot-melt adhesive 123b so as not to be peeled off. Between the inner sheet 121b and the outer sheet 122b, there are a plurality of waistline elastic members 124b and a plurality of auxiliary elastic members 126b extending in parallel to each other in the width direction X, and these elastic members 124b and 126b are the inner sheets. It is joined to at least one of 121b and outer sheet 122b in a stretched state via a hot melt adhesive (not shown). In the front panel 106 and the rear panel 107, the

inner sheets

121a and 121b and the outer sheets 122a and 122b include a nonwoven fabric or a moisture permeable plastic film formed of thermoplastic synthetic fibers, a laminate of the nonwoven fabric and the moisture permeable plastic film, or the like. used.

The same thing as the excrement absorption holding area 4 illustrated in FIG. 2 is used for the central panel 108 in the unfolded diaper 101a. That is, the center panel 108 includes the core material 45, the inner surface sheet 46, the outer surface sheet 47, and the barrier sheet 48 in the absorption holding region 4 shown in FIGS. 1, 2, and 3, and the inner surface sheet 46 is the diaper 101 and the unfolded diaper. Barrier flaps 60L and 60R are formed on both sides of the central panel forming the inner surface of the crotch region 8 in 101a. The barrier flaps 60L and 60R are formed by folding the portion where the outer sheet 47 extends from the core member 45 into an inverted Z shape or a Z shape. Each of the barrier flaps 60L and 60R includes an intermediate portion 60c in the embodiment of FIG. 3 and front and

rear end portions

60a and 60b in the embodiment of FIG. The portions 68 of the barrier flaps 60L and 60R at the front and

rear end portions

60a and 60b are detachably joined to a portion 67 where they overlap. The barrier flaps 60L and 60R in the diaper 101 of FIG. 7 are in a state of standing up away from the inner sheet toward the skin of the diaper wearer due to the elastic member 64 (see FIG. 8) at the proximal edge 62 contracting. Become. FIG. 7 shows only one of such barrier flaps 60L, 60R.

FIG. 9 is a view showing a cross-sectional structure of the central panel 108 along the IX-IX line section in FIG. The central panel 108 has substantially the same structure as the excreta absorption / retention area 4 illustrated in FIG. However, unlike the absorption holding area 4, the central panel 108 forms a barrier flap 60 L in which the portion 67 and the portion 68 overlap by folding the outer surface sheet 47 extending from the core material 45 along the inner surface sheet 46. ing. The distal edge 61 of the barrier flap 60L is integrated with the inner surface sheet 46 via a hot melt adhesive 47a. When the portion 68 of the barrier flap 60L overlaps the inner sheet 46 like an imaginary line, it overlaps the center line CC, and the proximal edge 62 exceeds the center line CC.

FIG. 10 is a diagram showing the XX line section of FIG. The cross-sectional structure of the central panel 108 in FIG. 10 is substantially the same as the cross-sectional structure of the absorption holding area 4 in FIG. However, in the central panel 108, the outer sheet 47 is folded along the inner sheet 46 to form the rear end portion 60b of the barrier flap 60L, but the portion 67 in the rear end portion 60b is the upper surface of the inner sheet 46. In contrast, they are bonded together through a hot melt adhesive 66 so as not to be peeled off. The portion 68 at the rear end portion 60 b is joined to the portion 67 through the hot melt adhesive 69 so as to be peelable. The portion 68 can be separated from the portion 67 and overlapped with the inner sheet 46 by, for example, picking the edge 66b and pulling in the direction indicated by the arrow F. Although not shown, the portion 68 can be peeled off from the portion 67 and overlapped with the inner sheet 46 also at the front end portion 60a (see FIG. 8) of the barrier flap 60L.

FIG. 11 is a view similar to FIG. 4 showing a state in which, after the portion 68 in each of the barrier flaps 60L and 60R is peeled off from the portion 76 in the developed diaper 101a of FIG. It is. In the diaper 101 of FIG. 7, the front panel 106 is peeled from the rear panel 107 to form a developed diaper 101a having the shape of FIG. 8, so that the inner sheet 46 of the central panel 108, which is a body fluid absorption holding area, is provided with

barrier flaps

60L and 60R. And can be covered.

As one embodiment of the present invention, when the fastener tape 7b illustrated in FIG. 1 or an appropriate fastener tape instead of the fastener tape 7b illustrated in FIG. 1 is attached to the rear panel 107 of the developed diaper 101a in FIG. It can be used as an open-type disposable diaper in the present invention.

In this invention, as long as the use as a disposable diaper is not hindered, the aspect adopted in one of the embodiments can be applied to other embodiments. For example, the adhesive tape 80 illustrated in FIG. 4 can be applied to any diaper in the embodiment.

DESCRIPTION OF SYMBOLS 1 Disposable diaper 6 Front waistline area 7 Rear waistline area 8

Inseam area

60, 60L,

60R Barrier flap

60a, 60b End 61 Distal edge 62 Proximal edge 80 Joining means 101 Pants type disposable diaper 106 Front panel 106a Side edge 107 Rear panel 107a Side edge 108

Central panel

108a, 108b End 111 Girth circumference area X Width direction Y Length direction

Claims

A crotch having a front waistline region, a rear waistline region, a length direction extending between the front waist region and the rear waist region, and a width direction orthogonal to the length direction. And a barrier flap extending in the length direction on each side in the width direction of the crotch region, and a barrier flap extending in the length direction on each side in the width direction of the crotch region Disposable diapers,
The barrier flap includes a distal edge integrally extending with the crotch region and extending in the length direction, and a proximal edge parallel to the distal edge and capable of elastically contacting the skin of the wearer of the disposable diaper The folded barrier flaps are detachably joined to each other at both ends of the barrier flap in the length direction.
The barrier flaps may also be formed by peeling the barrier flaps joined at both ends and extending the proximal edge toward the inside in the width direction, so that the barrier flaps formed on both sides are mutually connected. The disposable diaper characterized by overlapping partially.
The diaper includes a front panel that forms the front waistline region, a rear panel that forms the back waistline region, and a central panel that forms the crotch region, each of these panels facing the wearer's skin And an outer surface facing the garment, one end of both ends of the central panel in the length direction is joined to the inner surface of the front panel, and the other end of the both ends is The outer surface is joined to the inner surface of the rear panel, the barrier flaps are formed on both sides of the width direction on the center panel, and the barrier flaps are folded at both ends of the barrier flap. The disposable diaper according to claim 1, wherein the barrier flaps are detachably joined.
The said barrier flap is formed with the joining means which makes it possible to maintain the overlapping state of the said barrier flaps which overlap partially, when the said barrier flap is extended toward the inner side of the said width direction. The disposable diaper according to 1 or 2.
The disposable diaper according to claim 2 or 3, wherein the central panel is formed so as to be peelable from the front panel and the rear panel.
The disposable diaper according to any one of claims 2 to 4, wherein the disposable diaper is of a pants type, and the front panel and the rear panel are detachably joined to each other at their side edges.