CN108135750B

CN108135750B - Absorbent article

Info

Publication number: CN108135750B
Application number: CN201680061245.2A
Authority: CN
Inventors: 黑田贤一郎; R·空司恩格; S·瓦特查那瑞特
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2015-12-28
Filing date: 2016-12-26
Publication date: 2020-09-22
Anticipated expiration: 2036-12-26
Also published as: JP2017118949A; WO2017115762A1; JP6146783B1; CN108135750A

Abstract

The invention provides an absorbent article which can be used even if a wing part is accidentally separated. An absorbent article (1) comprises: a front-rear direction (L); a width direction (W) orthogonal to the front-rear direction (L); a main body (2) having an absorber (30); and a 1 st wing part (41) and a 2 nd wing part (42) which are a pair, extend outward in the width direction from the main body part (2), and overlap each other when the underwear is worn. The 1 st wing (41) has a tear-inducing portion (80) extending in the front-rear direction (L), and a 1 st outer wing joint portion (61) located on the outer side in the width direction (W) than the tear-inducing portion (80). The 1 st wing (41) further has a 1 st inner wing joint (63) located more inward in the width direction (W) than the tear-inducing portion (80).

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article in which a pair of wing portions are overlapped with each other on a non-skin-facing side of underwear when worn.

Background

Patent document 1 discloses an absorbent article in which a pair of wing portions are overlapped with each other on a non-skin-facing side of underwear when worn. Each wing portion described in patent document 1 is provided with an easy-to-break line extending in the front-rear direction (see fig. 41 of patent document 1).

In a state where the absorbent article described in patent document 1 is worn on underwear, the main body portion is joined to the skin-facing surface of the underwear, and the wing portions are joined to the non-skin-facing surface of the underwear. When the user wants to remove the absorbent article from the undergarment after use, the user holds the main body section from the skin-facing surface side of the undergarment, for example, and then pulls the main body section away from the undergarment. The main body portion is pulled in a direction away from the skin-facing surface side of the undergarment, and the main body portion and the wing portions are separated from each other by the breakable line. Thereby, the main body portion is detached from the underwear.

Documents of the prior art

Patent document

Patent document 1: japanese Kohyo publication No. 2003-527929

Disclosure of Invention

With regard to the breakable lines formed in the absorbent article, the breakable lines may be accidentally broken when a force is applied. For example, when the packaged absorbent article is detached or when the absorbent article is worn, the user may pull the wing portions by mistake and the wing portions may be separated by the breakable lines.

If the front wing portions are separated during use, it becomes difficult to fix the absorbent article to underwear. Therefore, users sometimes abandon the use of absorbent articles with detached wing portions.

Therefore, an absorbent article that can be used even if the wing portions are accidentally detached has been desired.

An absorbent article of an aspect includes: a front-back direction; a width direction orthogonal to the front-rear direction; a main body section having an absorber; and a pair of 1 st wing part and a 2 nd wing part extending outward in the width direction from the main body part and overlapping each other in a state of being worn on the undergarment, wherein the 1 st wing part has a tear-inducing part extending in the front-back direction, an outer wing part joint part located outward in the width direction from the tear-inducing part, and an inner wing part joint part located inward in the width direction from the tear-inducing part.

Drawings

Fig. 1 is a plan view of an absorbent article according to an embodiment.

Fig. 2 is a sectional view of the absorbent article taken along the line a-a shown in fig. 1.

Fig. 3 is a plan view of the absorbent article of fig. 1 as seen from the non-skin-facing surface side in the 1 st wearing state of the undergarment.

Fig. 4 is a sectional view of the absorbent article in a worn state 1 with reference to the line a-a in fig. 1.

Fig. 5 is a plan view of the absorbent article of fig. 1 in a 2 nd wearing state on an undergarment, as viewed from the non-skin-facing surface side.

Fig. 6 is a sectional view of the absorbent article in the 2 nd worn state with reference to the line a-a in fig. 1.

Fig. 7 is an explanatory view for explaining a task of removing the absorbent article in the 2 nd worn state.

Fig. 8 is a plan view of an absorbent article according to modification 1.

Fig. 9 is a plan view of an absorbent article according to modification 2.

Fig. 10 is a plan view of an absorbent article according to modification 3.

Detailed Description

(1) Brief description of the embodiments

At least the following matters will be understood from the description of the present specification and the drawings.

According to the absorbent article of the embodiment, the 1 st flap 41 has the tear-inducing portion 80 extending in the front-rear direction L, the outer flap joining portion 61 located on the outer side in the width direction W than the tear-inducing portion 80, and the inner flap joining portion 63 located on the inner side in the width direction W than the tear-inducing portion 80.

In this absorbent article, even if the side portions in the width direction W of the 1 st wing 41 are accidentally separated via the tear-inducing portions 80 before use, the 1 st inner side wing joint portions 63 are present in the remaining portion of the 1 st wing remaining on the main body portion 2 side. Therefore, the 1 st inner wing part joint 63 can be worn on underwear. Therefore, even if the side portions of the 1 st wing portion 41 in the width direction W are accidentally torn open via the tear-inducing portions 80, the user can wear the absorbent article 1 on underwear and use it.

In addition, the tear guide portion 80 is sandwiched between the 1 st inner wing engagement portion 63 and the 1 st outer wing engagement portion 61 in the 1 st wearing state and the 2 nd wearing state. Therefore, the region of the tear-inducing portion 80 of the 1 st wing 41 can be prevented from floating from the undergarment during wearing of the absorbent article. This can prevent the region of the tear-inducing portion 80 of the 1 st wing 41 from rubbing against the outer cover such as trousers. As a result, the 1 st wing portion can be suppressed from being accidentally torn via the tear-inducing portion 80 during wearing of the absorbent article.

According to one embodiment, in the deployed state of the 1 st flap 41 and the 2 nd flap 42, a distance D13 between the base end portion 41BE of the 1 st flap 41 and the base end portion 42BE of the 2 nd flap 42 is greater than a sum of a distance D16 between the outer edge of the 1 st inner flap engagement portion 63 and the base end portion of the 1 st flap 41 and a distance D17 between the outer edge of the 2 nd flap 42 and the base end portion of the 2 nd flap 42. Thus, in the 2 nd wearing state (fig. 5 and 6), the 1 st inner wing portion joint portion 63 is joined to the underwear without overlapping the 2 nd wing portion 42. The 1 st inner wing engaging portion 63 is not engaged with the 2 nd wing 42, and thus, when the user tears the tear-inducing portion 80, the 1 st wing 41 and the 2 nd wing 42 are separated from each other. Thus, the user can easily remove the absorbent article from the undergarment even in the 2 nd wearing state. Further, since the 1 st inner flap part joint portion 63 is joined to the undergarment, the absorbent article in use can be made more resistant to shifting.

According to one embodiment, the 1 st inner flap engagement portion 63 has an outer edge in the width direction W extending parallel to the tear-inducing portion 80, and an inner edge in the width direction W of the outer flap engagement portion 61 extends parallel to the tear-inducing portion 80. Thus, in the 1 st wearing state (fig. 3 and 4) and the 2 nd wearing state (fig. 5 and 6), the region of the tear-inducing portion 80 is adjacent to the underwear in a uniform state. If the 1 st inner wing joint 63 and the 1 st outer wing joint 61 are not parallel to the tear-inducing portion 80, a part of the area of the tear-inducing portion 80 is easily lifted from the undergarment. In this case, during wearing of the absorbent article, a part of the tear-inducing portion 80 may be accidentally broken. If a part of the tear-inducing portion 80 is accidentally broken, the whole tear-inducing portion 80 may be accidentally broken starting from the broken part. In the present embodiment, the 1 st inner wing joint portion 63 and the 1 st outer wing joint portion 61 are parallel to the tear-inducing portion 80, so that the risk of the tear-inducing portion 80 being accidentally broken can be reduced.

According to one embodiment, the width in the width direction W of the 1 st inner wing engagement portion 63 is narrower than the width in the width direction W of the 1 st outer wing engagement portion 61. Thus, the engagement force of the 1 st inner wing engagement portion 63 is smaller than the engagement force of the 1 st outer wing engagement portion 61. Therefore, when the user tries to remove the absorbent article from the underwear, the 1 st inner flap part joint 63 is first detached from the underwear by the force of pulling the absorbent article. When the 1 st inner flap part joint 63 falls off from the undergarment, a force pulling the absorbent article is likely to act on the tear-inducing parts 80 of the 1 st flap part 41, and as a result, the tear-inducing parts 80 are broken. In this way, the width of the 1 st inner flap part joint 63 is made narrow, and the used absorbent article can be easily removed from underwear.

According to one embodiment, the 1 st wing portion 41 has a convex-shaped constricted portion 70 protruding toward the center in the front-rear direction L. The tear-inducing portion is provided in the region of the constricted portion 70. The 1 st wing 41 has a convex region 72 protruding outward from the center of the 1 st wing 41 in the front-rear direction at a position inward in the width direction of the region of the constricted portion 70. When the absorbent article is to be removed from underwear, the user grips, for example, the end edge of the main body portion 2 and pulls the end edge of the main body portion 2 in a direction away from the underwear. When the main body 2 is separated from the underwear, the proximal ends of the pair of

wing portions

41 and 42 are pulled toward the main body 2. A convex region 72 having a convex shape protruding outward from the center of the 1 st wing portion 41 in the front-rear direction L is provided on the inner side in the width direction than the region of the constricted portion 70. When the user pulls the body 2, the convex region 72 bulging in the front-rear direction L pulls the region of the constricted portion 70, which is the portion on the outer side in the width direction than the convex region 72, inward in the width direction. On the other hand, the wing portion overlapping portions at the outer sides in the width direction of the

wing portions

41 and 42, where the wing portions are joined to each other, are intended to remain on the non-skin surface side of the underwear against the force of pulling from the convex regions 72, and a force acts on the wing portion overlapping portions. The force acting on the

wing portions

41 and 42 is easily concentrated from the convex region 72 bulging in the front-rear direction L to the position of the constricted portion 70. The tear-inducing portion 80 is present at the position of the constricted portion 70, so that the tear-inducing portion 80 is easily torn open by the force of pulling the

wing portions

41, 42.

According to one embodiment, the length of the 1 st inner wing engagement portion 63 in the front-rear direction L is longer than the length of the 1 st outer wing engagement portion 61 in the front-rear direction L. When the absorbent article is to be removed from the undergarment, the user grips, for example, the end edge of the main body portion 2 and pulls the end edge of the main body portion 2 in a direction away from the undergarment (see fig. 7 (a) and (B)). When a part of the body section 2 is separated from the undergarment, the pair of

wing sections

41 and 42 are pulled toward the body section 2 side, and a force F1 pulling toward the widthwise outer side W acts on the wing sections (see fig. 7 (B) and (D)). The user pulls one of the front end edge and the rear end edge of the main body portion 2, and therefore, this force F1 is biased toward one of the front side or the rear side of the 1 st flap portion 41. At this time, in a state where both the 1 st inner flap joining part 63 and the 1 st outer flap joining part 61 are joined to the underwear, the holding force is hard to act on the tear-inducing part 80. When the user further pulls the end edge of the main body 2 and the 1 st inner flap part joint 63 falls off from the undergarment, one of the front end edge and the rear end edge of the 1 st inner flap part joint 63 is instantaneously pulled up toward the main body 2 by the force F1. On the other hand, at the 1 st outboard wing joint 61, the 1 st wing 41 and the 2 nd wing 42 are securely joined to each other, and therefore, the area of the 1 st outboard wing joint 61 is intended to remain in a stationary position relative to the undergarment S against the force F1. Accordingly, at the moment the 1 st inner wing part joint portion 63 comes off from the undergarment, a force that twists the tear-inducing portion 80 is applied to the region. In particular, if the length of the 1 st inner wing portion joining portion 63 in the front-rear direction L is longer than the length of the 1 st outer wing portion joining portion 61 in the front-rear direction L, a force that torsionally deforms the 1 st wing portion 41 is likely to act on the vicinity of the end portion of the tear-inducing portion 80 in the front-rear direction L. Therefore, the vicinity of the end of the tear-inducing portion 80 is easily broken at the moment the 1 st inner flap part joint 63 falls off from the undergarment.

According to one embodiment, the distance D11 between the 1 st outer flap engagement portion 61 and the tear-inducing portion 80 is shorter than the distance D12 between the base end portion of the 1 st flap 41 and the tear-inducing portion 80. When the user pulls the main body 2 in a direction away from the underwear, a tearing force acts between the main body 2 and the 1 st flap 41. In a state where the 1 st inner flap joining part 63 is detached from the undergarment, a tearing force is likely to act on the 1 st outer flap joining part 61. Since the tearing guide portion 80 is located closer to the 1 st wing engagement portion 61 than the base end portion of the 1 st wing portion 41, the tearing force can be efficiently applied to the tearing guide portion 80, and the 1 st wing portion 41 can be easily separated into two parts. In addition, the wearer may wear the wing section to underwear along the base end section of the wing section when wearing the underwear.

According to one embodiment, in the deployed state of the 1 st flap 41 and the 2 nd flap 42, the distance D13 between the base end portion 41BE of the 1 st flap 41 and the base end portion 42BE of the 2 nd flap 42 is greater than the sum of the distance D12 between the base end portion 41BE of the 1 st flap 41 and the tear-inducing portion 80 and the distance D14 between the outer edge of the 2 nd outer flap engagement portion 62 and the base end portion 42BE of the 2 nd flap 42. Thereby, in the 1 st worn state, the 2 nd outer wing engagement portion 62 and the tear-inducing portion 80 are separated in the width direction W. Since the 2 nd outer wing part joining part 62 does not overlap the tear-inducing part 80, the 1 st wing part 41 is easily torn by the tear-inducing part 80 and smoothly separated into two parts.

According to one embodiment, the 1 st outer wing part joint 61 is provided at a position overlapping the 2 nd wing part 42 in a worn state of the absorbent article on underwear, and the 2 nd wing part 42 has the 2 nd outer wing part joint 62 at a position overlapping the 1 st wing part 41 in the worn state of the absorbent article on underwear. When the absorbent article is worn on underwear, the 1 st wing section 41 and the 2 nd wing section 42 can be joined in a state of being overlapped with each other on the non-skin surface side of the underwear by the 1 st outer wing section joining section 61 or the 2 nd outer wing section joining section 62. When the absorbent article is to be removed from the undergarment, the user grips, for example, the front end edge of the main body portion 2, and pulls the front end edge of the main body portion 2 in a direction away from the undergarment. When the main body 2 is separated from the underwear, the 1 st flap 41 and the 2 nd flap 42 are pulled toward the main body 2, and a force pulling outward in the width direction acts on the 1 st flap 41. Due to the force acting on the 1 st wing 41, the 1 st wing 41 is torn apart by the tear-inducing portion 80. When the side portions in the width direction W of the 1 st wing portion 41 are separated, the side portions in the width direction W of the 1 st wing portion 41 are connected to the 2 nd wing portion 42 via the 1 st outer wing portion engaging portion 61 or the 2 nd outer wing portion engaging portion 62. Therefore, when the absorbent article is to be removed from the undergarment, the main body portion 2 is removed from the undergarment, and the side portions of the 1 st flap portion 41 in the width direction W can be removed together with the main body portion 2.

(2) Structure of absorbent article

An absorbent article 1 according to an embodiment will be described with reference to fig. 1 and 2. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. It should be noted that the drawings are schematic, and the scale of each size and the like are different from the real object. Therefore, specific dimensions and the like should be determined with reference to the following description. Further, the drawings may include portions having different dimensional relationships and ratios.

Fig. 1 is an expanded plan view of an absorbent article 1 according to an embodiment. Fig. 2 is a sectional view taken along line a-a of fig. 1. The developed plan view shown in fig. 1 is a view in a developed state in which the wing portions 4 of the absorbent article are developed (not folded). As the absorbent article 1, any absorbent article such as a panty liner (a vaginal liner), a sanitary napkin, and an incontinence pad can be considered. In the present embodiment, an example in which a sanitary napkin is used as the absorbent article 1 will be described. The sanitary napkin of the present embodiment is a daily sanitary napkin, but may be an overnight sanitary napkin.

The absorbent article 1 has a front-back direction L, a width direction W orthogonal to the front-back direction L, and a thickness direction T. The thickness direction T has a skin-facing surface side T1 and a non-skin-facing surface side T2 as the opposite side. The front-back direction is a direction along the longitudinal direction of the absorbent article. The width direction is a direction along a line connecting the centers of the pair of wing portions in the front-rear direction to each other.

The absorbent article 1 includes at least an absorber 30, a skin-facing sheet 10 positioned on the skin-facing surface side of the absorber 30, and a non-skin-facing sheet 20 positioned on the non-skin-facing surface side of the absorber 30.

The skin sheet 10 has an upper sheet 11 and side sheets 12. The top sheet 11 covers the skin-facing surface side of the absorber 30. The side sheet 12 covers the outer edge of the upper sheet 11 and extends outward in the width direction than the upper sheet 11. The skin-facing sheet 10 can be made of a material generally used for absorbent articles, and for example, a sheet containing fibers, an apertured film, or the like can be used. Nonwoven fabrics and paper can be used as the fiber-containing sheet.

The non-skin surface sheet 20 is a liquid-impermeable sheet. The non-skin-facing sheet 20 covers at least the non-skin-facing surface side of the absorbent body 30. As the non-skin-facing sheet 20, materials generally used for absorbent articles can be used, and for example, a non-air-permeable and air-permeable film, nonwoven fabric, or the like can be used.

The absorber 30 has: an absorbent core having absorbent materials such as pulp, SAP, and the like; and a core cladding covering the absorbent core. As the absorbent body, materials generally used for absorbent articles can be used. For example, the absorbent core can use hydrophilic fibers, high molecular water-absorbing polymers, or a combination thereof. For example, tissue paper or nonwoven fabric can be used for the core wrap.

The absorbent article 1 has a main body 2 and wing portions 4. The main body 2 is located at the center of the absorbent article 1 in the width direction W and extends in the front-rear direction L. The wing portions 4 extend outward in the width direction W from the outer edge 2E of the main body portion 2.

The main body 2 includes an upper sheet 11, a side sheet 12, a non-skin-contacting sheet 20, and an absorber 30. The flap section 4 has a side sheet 12 and a non-flesh side sheet 20. The center 4LC in the front-rear direction of the wing portion 4 is located within the range in the front-rear direction of the excretion portion opposing region disposed to oppose the excretion portion of the wearer. The flap sections 4 are configured to be foldable toward the non-skin-facing surface sheet 20, and to be foldable toward the non-skin-facing surface of the undergarment when worn. The structure of the wing portion 4 will be described in detail later.

As shown in fig. 2, a joint portion for fixing the absorbent article to the underwear S is provided on the non-skin-facing surface of the non-skin-facing sheet 20. The joint portion includes a main body joint portion 60 disposed on the main body portion 2, and wing

joint portions

61, 62, 63, 64 disposed on the wing portion 4. These engaging portions may include an adhesive or may be configured to function as a hook and a hook system fastener (japanese: ループ).

(3) Wing structure

Wing 4 has a 1 st wing 41 and a 2 nd wing 42. The 1 st wing part 41 and the 2 nd wing part 42 are overlapped with each other in a state of being worn on the undergarment S. Therefore, the total length of the sum of the length in the width direction of the 1 st flap 41 (the length from the base end portion 41BE of the 1 st flap 41 to the outer edge of the 1 st flap 41) and the length in the width direction of the 2 nd flap 42 may BE longer than the distance between the base end portion of the 1 st flap and the base end portion of the 2 nd flap 42, and is preferably 1.2 times or more the distance between the base end portion of the 1 st flap and the base end portion of the 2 nd flap 42. More preferably, the 1 st outer wing portion joint portion 61 is provided at a position overlapping the 2 nd wing portion 42 in a worn state of the absorbent article on underwear, and the 2 nd outer wing portion joint portion 62 is provided at a position overlapping the 1 st wing portion 41 in a worn state of the absorbent article on underwear.

In the present specification, the proximal end portion of the wing portion is the portion of the wing portion located on the most inner side in the width direction, and is the portion intersecting the main body portion 2. When the wing part is folded back toward the non-skin-facing surface side of the underwear, the base end part of the wing part is bent.

The 1 st flap 41 has a 1 st outer flap engagement portion 61 as a flap engagement portion, a 1 st inner flap engagement portion 63 as a flap engagement portion, and a tear-inducing portion 80 extending in the front-rear direction L. The 1 st outer wing engagement portion 61 is located further outward in the width direction W than the tear-inducing portion 80. The 1 st inner wing portion engagement portion 63 is located inward of the tear-inducing portion 80 in the width direction W.

The width of the 1 st inner wing engagement portion 63 in the width direction W is preferably narrower than the width of the 1 st outer wing engagement portion 61 in the width direction W. Thus, the engagement force of the 1 st inner wing engagement portion 63 is smaller than the engagement force of the 1 st outer wing engagement portion 61. Therefore, when the user tries to remove the absorbent article from the underwear, the 1 st inner flap part joint 63 is first detached from the underwear by the force of pulling the absorbent article. When the 1 st inner flap part joint 63 falls off from the undergarment, a force pulling the absorbent article is likely to act on the tear-inducing parts 80 of the 1 st flap part 41, and as a result, the tear-inducing parts 80 are broken. In this way, the width of the 1 st inner flap part joint 63 is made narrow, and the used absorbent article can be easily removed from underwear.

Further, the length of the 1 st inner wing engagement portion 63 in the front-rear direction L is preferably longer than the length of the 1 st outer wing engagement portion 61 in the front-rear direction L. When the absorbent article is to be removed from the undergarment, the user grips, for example, the end edge of the main body portion 2 and pulls the end edge of the main body portion 2 in a direction away from the undergarment (see fig. 7 (a) and (B)). When a part of the body section 2 is separated from the undergarment, the pair of

wing sections

41 and 42 are pulled toward the body section 2 side, and a force F1 pulling toward the widthwise outer side W acts on the wing sections (see fig. 7 (B) and (D)). The user pulls one of the front end edge and the rear end edge of the main body portion 2, and therefore, this force F1 is biased toward one of the front side or the rear side of the 1 st flap portion 41. At this time, in a state where both the 1 st inner flap joining part 63 and the 1 st outer flap joining part 61 are joined to the underwear, the holding force is hard to act on the tear-inducing part 80. When the user further pulls the end edge of the main body 2 and the 1 st inner flap part joint 63 falls off from the undergarment, one of the front end edge and the rear end edge of the 1 st inner flap part joint 63 is instantaneously pulled up toward the main body 2 by the force F1. On the other hand, at the 1 st outboard wing joint 61, the 1 st wing 41 and the 2 nd wing 42 are securely joined to each other, and therefore, the area of the 1 st outboard wing joint 61 is intended to remain in a stationary position relative to the undergarment S against the force F1. Accordingly, at the moment the 1 st inner wing part joint portion 63 comes off from the undergarment, a force that twists the tear-inducing portion 80 is applied to the region. In particular, when the length of the 1 st inner wing portion engagement portion 63 in the front-rear direction L is longer than the length of the 1 st outer wing portion engagement portion 61 in the front-rear direction L, a force that torsionally deforms the 1 st wing portion 41 is likely to act on the vicinity of the end portion of the tear-inducing portion 80 in the front-rear direction L. Therefore, the vicinity of the end of the tear-inducing portion 80 is easily broken at the moment the 1 st inner flap part joint 63 falls off from the undergarment.

Preferably, the 1 st inner flap joining portion 63 has an outer edge in the width direction W extending parallel to the tear-inducing portion 80, and the 1 st outer flap joining portion 61 has an inner edge in the width direction W extending parallel to the tear-inducing portion 80. Thus, in the 1 st wearing state (fig. 3 and 4) and the 2 nd wearing state (fig. 5 and 6), the region of the tear-inducing portion 80 is adjacent to the underwear in a uniform state. If the 1 st inner wing joint 63, the 1 st outer wing joint 61, and the tear-inducing portion 80 are not parallel to each other, a part of the area of the tear-inducing portion 80 is likely to float from the undergarment. In this case, during wearing of the absorbent article, a part of the tear-inducing portion 80 may be accidentally broken. If a part of the tear-inducing portion 80 is accidentally broken, the whole tear-inducing portion 80 may be accidentally broken starting from the broken part. In the present embodiment, the 1 st inner wing joint portion 63 and the 1 st outer wing joint portion 61 are parallel to the tear-inducing portion 80, so that the risk of the tear-inducing portion 80 being accidentally broken can be reduced.

Preferably, in the developed state of the 1 st flap 41 and the 2 nd flap 42, a distance D13 between the base end portion 41BE of the 1 st flap 41 and the base end portion 42BE of the 2 nd flap 42 is larger than a sum of a distance D16 between the outer edge of the 1 st inner flap joint 63 and the base end portion of the 1 st flap 41 and a distance D17 between the outer edge of the 2 nd flap 42 and the base end portion of the 2 nd flap 42. Thus, in the 2 nd wearing state (fig. 5 and 6), the 1 st inner wing portion joint portion 63 is joined to the underwear without overlapping the 2 nd wing portion 42. The 1 st inner wing engaging portion 63 is not engaged with the 2 nd wing 42, and thus, when the user tears the tear-inducing portion 80, the 1 st wing 41 and the 2 nd wing 42 are separated from each other. This allows the user to easily remove the absorbent article from the undergarment even in the 2 nd wearing state. Further, since the 1 st inner flap part joint portion 63 is joined to the undergarment, the absorbent article in use can be made more resistant to shifting.

The 2 nd wing 42 has a 2 nd outer wing engagement portion 62 as a wing engagement portion, and a 2 nd inner wing engagement portion 64 as a wing engagement portion. In the present embodiment, the 2 nd wing portion 42 does not have a tear-inducing portion. That is, the tear-inducing portion 80 is provided only in the 1 st wing portion 41. Instead, the 2 nd wing portion 42 may have a tear-inducing portion.

In the present embodiment, the 2 nd wing 42 has a 2 nd outer wing engagement portion 62 and a 2 nd inner wing engagement portion 64. However, without being limited thereto, the 2 nd wing 42 may have only one of the 2 nd outer wing engagement portion 62 and the 2 nd inner wing engagement portion 64. In addition, it is also possible that the 2 nd wing 42 has neither the 2 nd outer wing engagement portion 62 nor the 2 nd inner wing engagement portion 64.

The tear-inducing portions 80 are configured to allow the wearer to easily tear the wing portions. Specifically, the tear inducing portion 80 is composed of an easy-to-tear line, a recessed portion recessed rearward from the front end edge of the wing portion, a weakened portion of a material having a lower strength than the periphery, or a combination thereof. The easy-tear line has an opening through which the side sheet 12 and the non-skin-contacting sheet 20 constituting the 1 st wing 41 pass. The "distal edge" of the wing portion is an edge 41FE extending outward in the width direction from the proximal end portion 41BE on the distal side of the wing portion, out of the outer edge of the wing portion. The fragile portion can be exemplified by a portion in which the basis weight of the material constituting the 1 st wing portion 41 is reduced by widening the material, a portion in which the strength is reduced from the periphery by providing an opening in the skin-facing sheet 10 without providing an opening in the non-skin-facing sheet 20, or a portion in which the strength of the material is reduced by heat and pressure through embossing.

Since the tear-inducing portion 80 extends in the front-rear direction L, the tear portion torn by the tear-inducing portion 80 extends in the front-rear direction L. The leading edge of the tear-inducing portion 80 preferably coincides with the leading edge of the 1 st wing portion 41. In the case of the structure in which the distance between the leading edge of the tearing guide portion 80 and the leading edge of the 1 st wing portion 41 is 4mm or less, the same effect as the structure in which the leading edge of the tearing guide portion 80 and the leading edge of the 1 st wing portion 41 are aligned can be obtained, and the 1 st wing portion 41 can be easily separated by the tearing guide portion 80. The tear-inducing portion 80 may extend from one end to the other end of the 1 st wing portion 41 in the front-rear direction L.

In the deployed state of the 1 st wing shown in fig. 1 and 2, the tear-inducing portion 80 is disposed further inward in the width direction than the 1 st outer wing joint portion 61. The distance D11 between the 1 st outer wing engagement portion 61 and the tear-inducing portion 80 is preferably shorter than the distance D12 between the base end portion 41BE of the 1 st wing 41 and the tear-inducing portion 80. In this case, when the wearer pulls the main body portion including the absorbent body in a direction away from the underwear, a tearing force acts between the main body portion and the wing portions, and a force tends to act on the 1 st wing portion in the vicinity of the 1 st wing portion joint portion 61. Since the tearing guide portion 80 is located closer to the 1 st wing engagement portion 61 than the base end portion of the 1 st wing portion 41, the tearing force can be efficiently applied to the tearing guide portion 80, and the 1 st wing portion 41 can be easily separated into two parts. In addition, the wearer wears the wing parts on the underwear along the base end parts of the wing parts when wearing the underwear. The tear-inducing portion is relatively distant from the proximal end portion of the wing portion, so that the wearer does not easily touch the tear-inducing portion when wearing the garment, and accidental tearing of the tear-inducing portion when wearing the garment can be suppressed.

In the developed state of the 1 st flap 41 and the 2 nd flap 42, the distance D13 between the base end portion 41BE of the 1 st flap 41 and the base end portion 42BE of the 2 nd flap 42 is preferably larger than the total value of the distance D12 between the base end portion 41BE of the 1 st flap 41 and the tear-inducing portion 80 and the distance D14 between the outer edge of the 2 nd outer flap engagement portion 62 and the base end portion 42BE of the 2 nd flap 42. By making the distance D13 larger than the total length of the distance D12 and the distance D14 taken together, the 2 nd outer wing engaging portion 62 and the tear-inducing portion 80 are inevitably separated in the width direction in the 1 st worn state. Since the 2 nd outer wing part joining part 62 and the tear-inducing part 80 do not overlap with each other, the 1 st wing part is easily torn by the tear-inducing part 80 and smoothly separated into two parts.

The difference between the total distance of the distance D12 and the distance D14 and the distance D13 is preferably 3mm or more. If the difference between the total distance of the distance D12 and the distance D14 and the distance D13 is less than 3mm, when the wing portions are folded back to the non-skin surface side with the positions on the inner side in the width direction than the base end portions of the wing portions as bending base points, the 2 nd outer wing portion joining portion 62 may overlap the tear-inducing portion 80 in the 1 st worn state, and the tear-inducing portion 80 may be difficult to break.

(4) Mounting and removing form of absorbent article

Fig. 3 to 6 show a state where the absorbent article is worn on underwear. Fig. 3 and 4 show a 1 st wearing state in which the 1 st wing portion 41 is disposed on the inner side in the thickness direction T of the 2 nd wing portion 42 and the absorbent article 1 is worn on the undergarment S, and fig. 5 and 6 show a 2 nd wearing state in which the 1 st wing portion 41 is disposed on the outer side in the thickness direction T of the 2 nd wing portion 42 and the absorbent article 1 is worn on the undergarment. Fig. 7 is a view schematically showing a detached state of the 2 nd worn state.

As shown in fig. 7 (a) and (B), in a state where the absorbent article 1 is worn in an undergarment S, the main body portion 2 is joined to the skin-facing surface side of the undergarment S, and the pair of wing portions 4 is joined to the non-skin-facing surface side of the undergarment. More specifically, in the 1 st wearing state, the 1 st wing portion 41 and the undergarment S are joined together by the 1 st outer wing portion joining portion 61, and the 1 st wing portion 41 and the 2 nd wing portion 42 are joined together by the 2 nd outer wing portion joining portion 62. In the 2 nd wearing state, the 2 nd wing portion 42 and the undergarment S are joined together by the 2 nd outer wing portion joining portion 62, and the 1 st wing portion 41 and the 2 nd wing portion 42 are joined together by the 1 st outer wing portion joining portion 61.

When the absorbent article 1 is to be removed, the wearer usually holds the front end edge of the main body portion 2 and pulls the front end edge of the main body portion 2 in a direction away from the underwear. Since the pair of wing portions 4 are joined to each other on the non-skin-facing side of the undergarment, a tearing force acts between the main body portion 2 and the wing portions 4 in order to maintain the joined state with the undergarment when the main body portion 2 is separated from the undergarment. The force acting on the wing portions 4 tends to strongly act toward the front side held by the wearer. The 1 st wing 41 is torn by the tear-inducing portion 80 (see fig. 7 (C) and (D)). When the wearer further pulls the main body portion 2, the 1 st flap portion 41 is separated into two portions in the front-rear direction L as shown in fig. 7 (E) and (F).

In the 1 st worn state, when the 1 st wing 41 is separated into two parts, a part of the 1 st wing 41 on the base end side is connected to the main body 2. On the other hand, the side portion in the width direction W of the 1 st wing portion 41 is connected to the 2 nd wing portion 42 via the 2 nd outer wing portion engaging portion 62. When the wearer further pulls the absorbent article, the 1 st outer wing joint 61 is separated from the undergarment, and the main body joint 60 is separated from the undergarment, so that the entire absorbent article is separated from the undergarment.

In the 2 nd worn state, when the 1 st wing 41 is separated into two parts, a part of the 1 st wing 41 on the base end side is connected to the main body 2. The side portion in the width direction W of the 1 st wing portion 41 is connected to the 2 nd wing portion 42 via the 1 st outer wing portion engaging portion 61. When the wearer further pulls the absorbent article, the 2 nd outer wing joint 62 is separated from the undergarment, and the main body joint 60 is separated from the undergarment, so that the entire absorbent article is separated from the undergarment.

(5) Modification example

Next, an absorbent article according to a modification will be described with reference to fig. 8 to 10. In the description of the modified example, the same reference numerals are used for the same components as those of the above-described embodiment, and the description thereof is omitted.

Fig. 8 is a plan view of the absorbent article 1A of modification 1 in a developed state. The absorbent article 1A of modification 1 includes a tear-inducing portion 81 including a concave portion. The first wing portions 41 of the absorbent article 1A of modification 1 have the sheet-joining regions R1 where the skin surface sheet 10 and the non-skin surface sheet 20 are joined together and the sheet-non-joining regions R2 where the skin surface sheet 10 and the non-skin surface sheet 20 are not joined together, and the sheet-joining regions R1 and the sheet-non-joining regions R2 extend in the front-rear direction.

The sheet joining region R1 is a region marked with diagonal lines in fig. 8. The sheet joining region R1 is a region where sheets are joined together by an adhesive such as HMA, thermal fusion, or the like.

The tear-inducing portion 81 is a recessed portion recessed rearward from the front end edge of the 1 st wing portion 41. The tear-inducing portion 81 is disposed in the sheet non-joining region R2. The recessed portion may be recessed rearward from the front end edge of the wing portion, and may be in the shape of an arc, a trapezoid, a V-shape, or the like, and the shape thereof is not limited. The length of the recess in the front-rear direction (depth of the recess) is preferably 1mm or more and 15mm or less. The length of the recessed portion in the front-rear direction is 1mm or more, which is likely to be a starting point for tearing the wing portion, and if the length of the recessed portion in the front-rear direction is more than 15mm, the wing portion may be accidentally torn.

The sheet non-joined region R2 has lower strength than the sheet joined region R1, and is easily torn by the tear-inducing portion 81. The tear-inducing portion 81 is disposed in the sheet non-joined region R2 having a relatively low strength, and therefore, the 1 st flap portion is torn in the sheet non-joined region R2. Since the sheet joining region R1 and the sheet non-joining region R2 extend in the front-rear direction, the tear portion easily extends in the front-rear direction.

Fig. 9 is a plan view of the absorbent article 1B of modification 2 in an unfolded state. The absorbent article 1B of modification 2 includes a tear-inducing portion 82 including an easy-tear line and a concave portion. The tear-inducing portion 82 is provided continuously from the front end edge 41FE to the rear end edge 41RE of the 1 st wing portion 41. Further, the absorbent article 1B of modification 2 has the length of the 1 st wing portion 41 and the length of the 2 nd wing portion 42 in the front-rear direction becoming shorter toward the outer edge in the developed state.

The 1 st wing part 41 has a neck part 70 of a convex shape protruding toward the center 4LC in the front-rear direction L. The tear-inducing portion 82 is provided in the region of the constricted portion 70. The 1 st wing 41 has a convex region 72 protruding outward from the center of the 1 st wing 41 in the front-rear direction L at a position inward in the width direction of the region of the constricted portion 70. The region of the constricted portion 70 is a region where the outer contour line 41FE of the 1 st wing portion 41 bulges toward the center 4LC in the front-rear direction L. The boundary line on the inner side in the width direction W of the region of the constricted portion 70 is preferably a turning point on the outer contour line 41FE of the 1 st wing portion 41. In addition, the tear-inducing portion 80 is also considered to be provided in the area of the constricted portion 70 when the tear-inducing portion 80 is provided at the boundary position of the area of the constricted portion 70. In the case of the tear-inducing portion 82 including the recessed portion as in the present embodiment, when the outer shape of the wing portion on both sides in the width direction or one side in the width direction of the tear-inducing portion 82 is the region of the constricted portion 70 (the region of the convex shape protruding toward the center 4LC in the front-rear direction of the wing portion), the tear-inducing portion 82 is considered to be provided in the region of the constricted portion 70.

The 1 st wing 41 has a convex region 72 protruding outward from the center of the 1 st wing 41 in the front-rear direction L at a position inward in the width direction of the region of the constricted portion 70. The boundary line on the outer side in the width direction W of the convex region 72 is preferably a turning point on the outer contour line 41FE of the 1 st wing 41.

The outer edge of the region of the constricted portion 70 in the width direction W preferably reaches a position outside the end edge of the 1 st fin joining portion 61 inside in the width direction W, and also preferably reaches a position outside the end edge of the 1 st fin joining portion 61 outside in the width direction W. This makes it possible to easily apply a force concentrated on the 1 st flap part joining part 61 to the tear-inducing part 80 when the absorbent article is to be removed from underwear.

The tear-inducing portion 82 includes a recessed portion located at the front end edge 41FE and the rear end edge 41RE of the 1 st wing portion 41, and an easy-tear line continuously extending between the recessed portion and the recessed portion.

When the absorbent article is to be removed from underwear, the user grips, for example, the end edge of the main body portion 2 and pulls the end edge of the main body portion 2 in a direction away from the underwear. When the main body 2 is separated from the undergarment, the pair of

wing portions

41 and 42 are pulled toward the main body 2. A convex region 72 having a convex shape protruding outward from the center of the 1 st wing portion 41 in the front-rear direction L is provided on the inner side in the width direction than the region of the constricted portion 70. When the user pulls the body 2, the convex region 72 bulging in the front-rear direction L pulls the region of the constricted portion 70, which is the portion on the outer side in the width direction than the convex region 72, inward in the width direction. On the other hand, the wing portion overlapping portions of the

wing portions

41 and 42 on the outer sides in the width direction, which are the portions where the wing portions are joined, are intended to remain on the non-skin surface side of the underwear against the force of pulling from the convex regions 72, and a force acts on the wing portion overlapping portions. The force acting on the

wing portions

41, 42.

In modification 2, the tear-inducing portions 82 are provided continuously from the front end edge to the rear end edge of the 1 st wing portion 41. Absorbent articles having the same shape on the front side and the back side, such as sanitary napkins for daily use, are sometimes worn by the wearer upside down. By providing the tear-inducing portion 82 from the front end edge to the rear end edge of the 1 st flap 41, even when worn upside down, the tear-inducing portion 82 is disposed on the front side of the wearer, and the 1 st flap 41 can be broken by the tear-inducing portion 82.

Fig. 10 is a plan view of an absorbent article 1C according to modification 3 in a developed state. The absorbent article 1C of modification 3 is provided with the tear-inducing portions 83 in the 1 st flap portions 41 and the tear-inducing portions 84 in the 2 nd flap portions 42. The tear-inducing portions 84 extend in the front-rear direction from the rear end edges 42RE of the 2 nd wing portions 42. The tear-inducing portion 84 may include a tear-line, a recessed portion, a fragile portion, and a combination thereof, as with the tear-inducing portion 83.

By providing the tear-inducing portions 84 in the 2 nd flap portion 42, even when worn upside down, one of the tear-inducing

portions

80, 84 of the 1 st flap portion 41 and the 2 nd flap portion 42 is disposed on the front side of the wearer. Therefore, even when worn upside down, the main body 2 is detached from the underwear and the wing portions 4 are disconnected, so that the absorbent article 1 can be easily removed.

When the wearer takes off the absorbent article after use, the wearer grips the rear side of the main body section 2 and pulls the main body section in a direction away from the underwear. Even when the main body 2 is pulled from the rear side in this way, the 2 nd wing 42 can be separated into two parts. Therefore, even when the removal work is performed upside down, the main body section 2 can be removed together with the pair of wing sections 4 without dropping a part of the wing sections, and the removal work of the absorbent article can be performed cleanly. That is, at least one of the 1 st flap 41 and the 2 nd flap 42 is disconnected regardless of whether the wearer wants to remove the absorbent article from the front side of the main body 2 or from the rear side of the main body 2.

As described above, although the contents of the present invention are disclosed by the embodiments of the present invention, the description and drawings which are part of the present disclosure are not to be construed as limiting the present invention. Various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art in light of this disclosure. The scope of the invention is therefore intended to be determined solely by the features of the appended claims when read in light of the foregoing description.

The entire contents of Japanese patent application No. 2015-256597 filed on 12/28/2015 are incorporated into the present specification by reference.

Industrial applicability

An absorbent article that can be used even if the wing sections are accidentally detached can be provided.

Description of the reference numerals

1. 1A, 1B, 1C, an absorbent article; 2. a main body portion; 4. a wing portion; 41. a 1 st wing part; 42. a 2 nd wing part; 10. a skin patch; 11. an upper ply; 12. a side sheet; 20. a non-skin patch; 30. an absorbent body; 61. 1 st outboard wing engagement; 62. 2 nd outboard wing engagement; 63. 1 st inner wing joint; 64. 2 nd inner wing joint; 70. shrinking the neck part; 80. 81, 82, 83, tear induction part; 84. a tear-inducing portion; r1, panel joining region; r2, panel non-joined area; l, the front-back direction; t, the thickness direction; t1, skin-facing surface side; t2, non-skin-facing surface side; w, width direction.

Claims

1. An absorbent article, comprising:

a front-back direction;

a width direction orthogonal to the front-rear direction;

a main body section having an absorber; and

a pair of a 1 st wing part and a 2 nd wing part extending outward in the width direction from the main body part and overlapping each other when worn on underwear,

the 1 st wing has a tear-inducing portion extending in the front-rear direction and an outer-side wing engagement portion located on the outer side in the width direction than the tear-inducing portion,

it is characterized in that the preparation method is characterized in that,

the 1 st wing further includes an inner wing engagement portion located more inward in the width direction than the tear-inducing portion.

2. The absorbent article according to claim 1,

in the deployed state of the 1 st wing and the 2 nd wing, a distance between the base end of the 1 st wing and the base end of the 2 nd wing is greater than a sum of a distance between the outer edge of the inner wing joint and the base end of the 1 st wing and a distance between the outer edge of the 2 nd wing and the base end of the 2 nd wing.

3. The absorbent article according to claim 1 or 2,

the widthwise outer end edge of the inner wing part joint part extends in parallel with the tear inducing part,

the widthwise inner end edge of the outer wing part joint part extends parallel to the tear inducing part.

4. The absorbent article according to claim 1 or 2,

the width of the inner wing engagement portion in the width direction is narrower than the width of the outer wing engagement portion in the width direction.

5. The absorbent article according to claim 1 or 2,

the 1 st wing part has a convex-shaped constricted part protruding toward the center in the front-rear direction,

the tearing inducing part is arranged in the area of the necking part,

the 1 st wing portion has a convex region protruding outward from the center of the 1 st wing portion in the front-rear direction at a position inward in the width direction with respect to the region of the constricted portion.

6. The absorbent article according to claim 1 or 2,

the length of the inner wing engagement portion in the front-rear direction is longer than the length of the outer wing engagement portion in the front-rear direction.

7. The absorbent article according to claim 1 or 2,

the distance between the outer wing engagement portion and the tear-inducing portion is shorter than the distance between the base end portion of the 1 st wing and the tear-inducing portion.

8. The absorbent article according to claim 1 or 2,

in the unfolded state of the 1 st wing and the 2 nd wing, a distance between a base end portion of the 1 st wing and a base end portion of the 2 nd wing is greater than a sum of a distance between the base end portion of the 1 st wing and the tear-inducing portion and a distance between an outer edge of the 2 nd wing engaging portion and the base end portion of the 2 nd wing.

9. The absorbent article according to claim 1 or 2,

the outer wing part joint part is provided at a position overlapping with the 2 nd wing part in a wearing state of the absorbent article on underwear,

the 2 nd wing portion has a 2 nd wing portion joint portion at a position overlapping the 1 st wing portion in a worn state of the absorbent article on underwear.