WO2018207512A1

WO2018207512A1 - Underpants-form absorbent article

Info

Publication number: WO2018207512A1
Application number: PCT/JP2018/014590
Authority: WO
Inventors: 友美衛藤; 中嶋　海陽
Original assignee: ユニ・チャーム株式会社
Priority date: 2017-05-10
Filing date: 2018-04-05
Publication date: 2018-11-15
Also published as: JP2018187217A; TW201900129A

Abstract

This underpants-form absorbent article comprises an absorbent main body (10) and a pair of belt parts (20) which are transversally stretchable. A pair of joint parts (2, 3) at which the absorbent main body (10) and the pair of belt parts (20) are joined are provided on the front side and the rear side. The joint parts (2, 3) are inclined transversally outward from the side with the waist opening part to the side with the leg opening part. The longitudinal ends of the absorbent main body (10) constitute portions of the waist opening part and do not stretch transversally. The transversal length of the ends of the absorbent main body (10) being represented by L, cut lines (50) having a predetermined vertical length are provided within areas extending from the joint parts (2, 3) to positions parallel to, and separated transversally outward by L from, the joint parts (2, 3).

Description

Pants-type absorbent article

The present invention relates to a pants-type absorbent article.

Patent Document 1 includes an abdominal exterior body disposed on the wearer's ventral side, a back exterior body disposed on the wearer's back side, and an absorbent main body spanned between both exterior bodies. A pants-type absorbent article is disclosed in which both side edges along the longitudinal direction of both exterior bodies are joined to form a pair of side seals, a waist opening, and a pair of leg openings.
Moreover, in patent document 1, the breakage | guidance | derivation incision part ranging from a waist opening part to a leg opening part is provided between an absorptive main body and a side seal part so that undressing of an underpants type absorbent article may become easy. Yes.

JP-A-2015-92957

However, in the pant-type absorbent article of Patent Document 1, an elastic member is arranged over the entire circumference of the waist opening. Therefore, when the user grips and ruptures both sides of the breakage guide cut portion, both hands must grip the region extending in the lateral direction with the elastic member. If it does so, there exists a possibility that it may be difficult to fix because the grasped part will extend in the horizontal direction, or an unintended position may be broken because the grasped position is far away from the breakage induction notch. Therefore, the pants-type absorbent article is not easily broken and the pants-type absorbent article cannot be easily undressed.

The present invention has been made in view of the conventional problems as described above, and an object of the present invention is to provide a pant-type absorbent article that can be easily broken and easily undressed.

A main invention for achieving the above object is a pant-type absorbent article having a longitudinal direction, a lateral direction, and a front-rear direction, which is folded in half in the longitudinal direction, and the longitudinal direction is along the longitudinal direction. An absorbent main body, and a pair of belt portions disposed on both sides of the absorbent main body in the lateral direction and extending and contracting in the lateral direction, and at least each of the absorbent main body and the pair of belt portions. A pair of joint portions are provided on the front side and the rear side in the front-rear direction, respectively, and the joint portions are arranged in the lateral direction from the waistline opening side to the leghole opening side in the longitudinal direction. Inclined outward, the longitudinal end of the absorbent body forms part of the waistline opening and does not expand or contract in the lateral direction, the lateral side of the end of the absorbent body When the length in the direction is L, the joint A cut line having a predetermined length in the longitudinal direction is provided in a range up to a position spaced apart by L in the lateral direction in parallel with the joint portion. It is an absorbent article.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

According to the present invention, it is possible to provide a pant-type absorbent article that can be easily broken and easily undressed.

1 is a schematic perspective view of a diaper 1. FIG. 2A is a plan view of the diaper 1 in a state of being elongated in the longitudinal direction, and FIG. 2B is a cross-sectional view taken along line AA in FIG. 2A. 3A is a plan view of the diaper 1 in which the joint of FIG. 2A is separated and developed, and FIG. 3B is a cross-sectional view taken along line AA of FIG. 3A. It is the figure which looked at the diaper 1 of the underpants type state from the front side. It is the figure which looked at the diaper 1 of the underpants type state from the back side. 6A to 6C are explanatory diagrams of a method for folding the diaper 1. 7A to 7C are explanatory views of a modified example of the diaper 1. FIG.

At least the following matters will become clear from the description of this specification and the accompanying drawings.

A pant-type absorbent article having a longitudinal direction, a lateral direction, and a front-rear direction, wherein the absorbent body is folded in two in the longitudinal direction, and the longitudinal direction is along the longitudinal direction, and the absorbent body A pair of belt portions disposed on both sides in the lateral direction and extending and contracting in the lateral direction, and at least a pair of joint portions joining each of the absorbent main body and the pair of belt portions, Provided in front and rear sides of the direction, the joint portion is inclined outwardly in the lateral direction from the waistline opening side to the leghole opening side in the longitudinal direction, The end in the longitudinal direction forms a part of the waistline opening, does not expand and contract in the lateral direction, and when the length in the lateral direction of the end of the absorbent body is L, From the joint, in front of the joint by L in parallel to the joint The range to a position spaced apart in the transverse direction outward, the cutting line is provided which has a predetermined length in the longitudinal direction, a pant-type absorbent article characterized by.

According to such a pants-type absorbent article, the belt portion can be easily broken by the cut line. Moreover, it can guide | invade so that a user may hold | grip the edge part of the longitudinal direction of the absorptive main body which does not expand-contract in a horizontal direction. As a result, the user can stably pull the tear line with the other hand while firmly fixing the longitudinal end of the absorbent main body with the other hand. Further, when the cut line is pulled, the position held by the user is not greatly separated from the cut line, so that the belt portion can be cleanly and easily broken along the cut line. Therefore, the pants-type absorbent article can be easily undressed.

Such a pant-type absorbent article, wherein the cut line is along the joint.

According to such a pants-type absorbent article, a force is easily applied to the cut line, and the belt portion can be cleanly and easily broken along the cut line.

Such a pant-type absorbent article, wherein the cut line does not reach the leg opening.

According to such a pants-type absorbent article, it is possible to suppress the momentum of breaking the tear line. At the end of the break, the user regains the vicinity of the leg opening LH and carefully breaks the belt portion. Can be guided to expand.

In this pant-type absorbent article, the belt portion has a plurality of thread-like elastic members that expand and contract in the lateral direction in the longitudinal direction, and the cut line is the most around the leg in the longitudinal direction. A pant-type absorbent article, characterized in that it is positioned closer to the waistline opening than the thread-like elastic member on the opening side.

According to such a pant-type absorbent article, the momentum at which the tear line breaks can be suppressed by the thread-like elastic member.

In this pant-type absorbent article, a sheet-like elastic member is provided along the leg-hole opening, and the cut line is closer to the waistline opening than the sheet-like elastic member in the longitudinal direction. It is a pants type absorbent article characterized by being located in.

According to such a pants-type absorbent article, it is possible to suppress the breaking moment of the tear line by the sheet-like elastic member.

In such a pants-type absorbent article, in the packaged state of the pants-type absorbent article, the lateral end of the belt portion is folded inwardly in the lateral direction, and the absorbent main body is Folded at a folding position along the direction, and in the packaged state, the tear line is located closer to the waistline opening in the longitudinal direction than the folding position of the absorbent main body. The pants-type absorbent article.

According to such a pants-type absorbent article, it is possible to prevent creases along the transverse direction from being attached to the cut line and its periphery. Therefore, the belt portion can be cleanly and easily broken along the cut line.

In this pant-type absorbent article, the absorbent main body has an absorbent core that absorbs liquid, and the lateral length of the end portion of the absorbent main body is the horizontal length of the absorbent core. A pants-type absorbent article characterized by being shorter than the length in the direction.

According to such a pants-type absorbent article, since the cut line is provided at a position closer to the joint portion, it is possible to guide the user to hold the end portion in the longitudinal direction of the absorbent main body.

In this pant-type absorbent article, the cut line is provided on each of the front side and the rear side, and the cut line on the rear side is more longitudinal than the cut line on the front side. A pants-type absorbent article characterized by having a short direction length.

According to such a pants-type absorbent article, the rear belt portion is easier to extend in the lateral direction by the rounded portion of the buttock than the front belt portion during wearing. Since the length of the wire is short, unnecessary breakage of the belt portion can be prevented.

=== Embodiment ===
Hereinafter, as an underpants type absorbent article according to the present invention, an embodiment will be described by taking an underpants type disposable diaper for adults as an example. However, the pant-type absorbent article according to the present invention can be used as, for example, diapers for infants, shorts-type sanitary napkins, and the like.

<< Basic configuration of pants-type disposable diaper 1 >>
FIG. 1 is a schematic perspective view of a pants-type disposable diaper 1 (hereinafter “diaper”). 2A is a plan view of the diaper 1 in a state where the absorbent main body 10 and the belt portion 20 are extended in the longitudinal direction, and FIG. 2B is a cross-sectional view taken along line AA in FIG. 2A. 3A is a plan view of the diaper 1 in which the joint of FIG. 2A is separated and developed, and FIG. 3B is a cross-sectional view taken along line AA of FIG. 3A.

In addition, the state which extended the diaper 1 is the state which extended the diaper 1 so that the wrinkles which had arisen in the diaper 1 would no longer be visually recognized. Specifically, it is a state in which each member constituting the diaper 1 (for example, the sheet 41 shown in FIG. 3B) is extended until the dimension thereof matches or is close to the dimension of the member itself.

The diaper 1 is in a pants-type state as shown in FIG. 1 when worn. The pants-type diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction orthogonal to each other, and is formed with a waistline opening BH and a pair of leg-hole openings LH. In the vertical direction, the waistline opening BH side is the upper side, and the opposite side is the lower side. In the front-rear direction, the wearer's ventral side is the front side, and the wearer's back side is the rear side. Moreover, as shown to FIG. 2B, let the direction where each member which comprises the diaper 1 was laminated | stacked be a thickness direction. In the thickness direction, the side in contact with the wearer is the skin side, and the opposite side is the non-skin side.

The diaper 1 has an absorbent main body 10, a pair of belt portions 20, and a pair of leg gather portions 30. The pair of leg gathers 30 is disposed along both lateral sides of the absorbent main body 10.

In the diaper 1 in the planar state shown in FIG. 2A, the longitudinal directions of the absorbent main body 10, the pair of belt portions 20, and the pair of leg gathers 30 are aligned, and the skin side surfaces of the absorbent main body 10 and the pair of leg gathers 30. A pair of belt parts 20 are piled up, and the skin side faces each other. In the diaper 1 in the flat state, the absorbent body 10 and the leg gather portion 30 are opened while the lateral inner ends 20a of the pair of belt portions 20 are opened outward, and the belt portion 20 is folded in half at the approximate center in the longitudinal direction. Is folded in half at the approximate center in the longitudinal direction to form a diaper 1 in a pants-type state (FIG. 1).

In the pants-type diaper 1 (FIG. 1), the absorbent main body 10 and the pair of leg gathers 30 are folded in half so that the longitudinal direction thereof is along the longitudinal direction of the diaper 1. The pair of belt portions 20 are disposed on both sides of the absorbent main body 10 in the lateral direction. More specifically, one end of each belt portion 20 is joined to the longitudinal end portions of the absorbent main body 10 and the leg gather portion 30 at the joint portion 2 on the front side, and the other end of each belt portion 20 is In the joint part 3 on the side, the absorbent body 10 and the leg gather part 30 are joined to the longitudinal ends. That is, the diaper 1 is provided with a pair of

joint portions

2, 2, 3, 3 on the front side and the rear side in the front-rear direction.

Further, each of the

joint portions

2 and 3 is inclined outward in the lateral direction from the waistline opening BH side to the leg opening LH side in the longitudinal direction of the diaper 1. Examples of the joining method at the joining

parts

2 and 3 include known joining methods such as heat sealing, ultrasonic sealing, adhesive, and combinations thereof.

Further, in the diaper 1 in a pants-type state, the belt part 20 can be expanded and contracted in the horizontal direction, the leg gather part 30 can be expanded and contracted in the vertical direction, and the diaper 1 fits around the waist and legs of the wearer. For this purpose, the belt portion 20 has a plurality of elastic members 21 extending and contracting in the horizontal direction and arranged in the vertical direction. The leg gather portion 30 has a plurality of elastic members 31 that extend and contract in the vertical direction, arranged in the horizontal direction. Examples of the

elastic members

21 and 31 include thread-like elastic members such as rubber and spandex, but may be sheet-like elastic members such as a stretchable nonwoven fabric and a stretchable film. Further, the belt portion 20 and the leg gather portion 30 are provided with a sheet-like elastic member 42 at an edge extending over the entire circumference of the leg opening LH.

In the absorbent main body 10, as shown in FIG. 2B, from the skin side in the thickness direction, a liquid-permeable top sheet 11 (for example, an air-through nonwoven fabric), an absorbent body 12, and a liquid-impermeable back sheet 13 (for example, polyethylene) Film etc.) and the exterior sheet | seat 14 (for example, flexible sheets, such as a nonwoven fabric) are laminated | stacked. In the absorbent body 12, a liquid-permeable core wrap sheet (for example, a tissue or the like) is coated on an absorbent core that absorbs liquid. As an absorptive core, what contained superabsorbent polymer in liquid absorptive fibers, such as a pulp fiber, can be illustrated.

Further, as shown in FIG. 3A, a hydrophobic sheet 15 is provided on the skin side of the top sheet 11 at each longitudinal end of the absorbent main body 10. The hydrophobic sheet 15 can suppress the excretion fluid absorbed by the absorbent main body 10 from returning to the skin side and oozing out, making it difficult for the wearer to feel uncomfortable.

Moreover, the leg gather part 20 and the belt part 30 are formed from the same sheet | seat member 40, as shown to FIG. 3B. In the sheet member 40, the elastic member 21 for the belt portion 20, the elastic member 31 for the leg gather portion 30, and the leg opening LH are provided between two sheets 41 (for example, a flexible sheet such as a nonwoven fabric). A sheet-like elastic member 42 is provided. The two sheets 41 and the sheet-like elastic member 42 are cut out with holes for the leg opening LH.

In the production line of the diaper 1, as shown in FIG. 3B, a pair of sheet members 40 are arranged on both sides of the absorbent main body 10 in the lateral direction. Then, at the folding position F0 along the longitudinal direction of the absorbent main body 10 and passing through the hole for the leg opening LH, the sheet member 40 is folded back to the skin side surface side of the absorbent main body 10, and the state shown in FIG. 2B It becomes. Of the sheet member 40, a portion overlapping the absorbent main body 10 in the thickness direction becomes the belt portion 20, and a portion aligned in the lateral direction with the absorbent main body 10 becomes the leg gather portion 30. Then, by forming the front pair of

joint portions

2 and 2 and the rear pair of

joint portions

3 and 3, the folded state of the sheet member 40 is fixed, and the flat diaper 1 (FIG. 2A) is formed. Is done. However, it is not limited to this, The belt part 20 and the leg gather part 30 may be formed with the separate member.

<< Cut line 50 >>
FIG. 4 is a view of the diaper 1 in a pants-type state as viewed from the front side. FIG. 5 is a view of the diaper 1 in a pants-type state as viewed from the rear side.

As shown in FIG. 4, the diaper 1 is provided with “a pair of cut lines 50” on the belt portion 20 which is the lateral outer side of the pair of

joints

2 and 2 on the front side. Further, as shown in FIG. 5, “a pair of cut lines 50” is also provided on the belt portion 20 which is the lateral outer side of the pair of

joint portions

3 and 3 on the rear side. The cut line 50 extends from the waist opening BH toward the leg opening LH, and has a predetermined length (La, Lb) in the vertical direction.

The portion of the belt portion 20 where the cut line 50 is arranged has a lower strength than the surroundings and is easily broken. The cut line 50 can be exemplified by a plurality of hole portions arranged at intervals. The plurality of hole portions are portions where the sheet 41 constituting the belt portion 20 is thinned or penetrated. In addition, the cut line 50 can be exemplified by a groove shape in which the sheet 41 is continuously thinned.

When the wearer himself removes the diaper 1 or when the caregiver removes the diaper 1 from the wearer, the wearer or caregiver (hereinafter referred to as a user) breaks the tear line 50, whereby the pair of belt portions 20. Expands in the lateral direction, and the absorbent main body 10 expands in the longitudinal direction. Therefore, it is easier to undress compared to the case where the diaper 1 is pulled down and the legs are removed. In addition, the diaper 1 can be easily broken with a weak force as compared with the case where the

joint portions

2 and 3 are broken, and undressing is facilitated.

As shown in FIGS. 4 and 5, in the diaper 1, the end 10 a in the longitudinal direction of the absorbent main body 10 extends to the upper end of the diaper 1, and forms the waist opening BH together with the belt 20. . The belt portion 20 includes the elastic member 21 and expands and contracts in the lateral direction, whereas the longitudinal end portion 10a of the absorbent main body 10 does not expand and contract in the lateral direction.

In general, the user breaks from above the cut line 50. In addition, when the tear line 50 is broken, the user grips both sides of the tear line 50, but grips the tear line 50 so that the tear line 50 is positioned at the center of the portion gripped by both hands.

Therefore, as shown in FIGS. 4 and 5, in the diaper 1 in a pants-type state that is in a natural state, that is, in a flat state in which no force is applied from the outside, the lateral direction of the longitudinal end portion 10 a of the absorbent main body 10. Is a range from the

joints

2 and 3 to a position spaced laterally outward by a length L parallel to the joints 2 and 3 (between a pair of one-dot chain lines 4 in the figure). The cut line 50 may be provided in the range.

Temporarily, it is assumed that the cut line 50 is provided at a position outside in the lateral direction from the above range, that is, at a position away from the longitudinal end portion 10a of the absorbent main body 10. In that case, when the tear line 50 is broken, the user can easily grip the belt portion 20 with both hands. Then, for example, when the hand holding one part of the cut line 50 is fixed and the hand holding the other part of the cut line 50 is pulled in the horizontal direction, the fixed part extends in the horizontal direction. Then it is difficult to fix and the tension becomes unstable. In addition, since both sides in the horizontal direction of the cut line 50 extend together, the positions held by the user with both hands are greatly separated from the cut line 50. Then, it is difficult for force to act on the cut line 50, and there is a possibility that the belt portion 20 may break at an unintended position such as lateral tearing along the thread-like elastic member 21.

Therefore, it is advisable to provide a cut line 50 within the above range. By doing so, when the user grips the diaper 1 so that the cut line 50 is positioned at the center of the part gripped by both hands, one hand grips the longitudinal end 10a of the absorbent main body 10. It becomes easy to do. That is, the user can be guided to hold the end 10a in the longitudinal direction of the absorbent main body 10 that does not expand or contract in the lateral direction.

Then, the user can stably fix the tear line 50 to the outside in the lateral direction with the other hand in a state where the longitudinal end 10a of the absorbent main body 10 that does not expand or contract in the lateral direction is firmly fixed with one hand. It can be pulled and the tear line 50 can be easily broken. Further, when the cut line 50 is pulled, the cut line 50 is not greatly separated from the longitudinal end portion 10a of the absorbent main body 10 held by the user, and a force easily acts on the cut line 50. Therefore, the belt portion 20 can be cleanly and easily broken along the cut line 50 even with a weak force.

In addition, the following ranges can be illustrated as the range of the longitudinal direction of the longitudinal end 10a of the absorbent main body 10. For example, when the upper end portion 20a of the belt portion 20 is folded as shown in FIG. 2B, the portion of the absorbent main body 10 that overlaps the folded portion 20a in the vertical direction is defined as the end portion of the absorbent main body 10 in the longitudinal direction. 10a is recommended. In this case, in the diaper 1 of this embodiment, the range from the upper end 10a1 of the absorptive main body 10 to 20 mm downward in the vertical direction is the end portion 10a. In addition, it is good also considering the site | part of the absorptive main body 10 which overlaps with the hydrophobic sheet | seat 15 shown to FIG.

Moreover, in the diaper 1, the

junction parts

2 and 3 incline outward in the horizontal direction toward the lower side in the vertical direction, and the absorbent main body 10 has a shape that tapers upward. Therefore, in the longitudinal end portion 10a of the absorbent main body 10, the lateral length L2 of the lower end 10a2 is longer than the lateral length L1 of the upper end 10a1. Therefore, from the

joints

2 and 3 to the position separated in the lateral direction by the lateral length L2 of the lower end 10a2 of the longitudinal end 10a of the absorbent main body 10 in parallel with the

joints

2 and 3. The cut line 50 should just be provided in the range.

More preferably, in the range from the

joints

2 and 3 to a position parallel to the

joints

2 and 3 and spaced laterally outward by the lateral length L1 of the upper end 10a1 of the absorbent body 10. A cut line 50 may be provided. By doing so, the cut line 50 is provided at a position closer to the longitudinal end portion 10a of the absorbent main body 10. Therefore, it becomes easier to guide the user to hold the end 10a in the longitudinal direction of the absorbent main body 10. In the diaper 1 of the present embodiment, it is assumed that the cut line 50 is provided at a position separated from the

joints

2 and 3 by 5 mm in the lateral direction in parallel to the

joints

2 and 3.

Further, since the

joint portions

2 and 3 are inclined outward in the lateral direction toward the lower side in the vertical direction, for example, compared to a case where the

joint portions

2 and 3 are straight along the vertical direction. The lateral length of the end portion 10a in the longitudinal direction of the main body 10 can be shortened.

Furthermore, the lateral length L of the longitudinal end 10a of the absorbent main body 10 may be shorter than the lateral length W of the absorbent core 12.

Thus, the cut line 50 is provided at a position closer to the longitudinal end portion 10a of the absorbent main body 10 by making the lateral length L of the longitudinal end portion 10a of the absorbent main body 10 shorter. Therefore, compared with the case where the lateral length L of the longitudinal end 10a of the absorbent main body 10 is equal to or greater than the lateral length W of the absorbent core 12, the longitudinal end of the absorbent main body 10 is obtained. It becomes easier to guide the user to hold 10a. In addition, since the range that the user guides to grip becomes narrow, the user grips a position closer to the cut line 50. Therefore, force is easily applied to the cut line 50, and the cut line 50 can be more easily broken.

Further, the cut line 50 is preferably along the

joints

2 and 3. That the cut line 50 is along the

joints

2 and 3 is the same as the

joints

2 and 3, the cut line 50 is also in the vertical direction from the waist opening BH side to the leg opening LH side. That is, it forms a linear shape inclined outward in the lateral direction. More preferably, the cut line 50 is parallel to the

joints

2 and 3.

By doing so, the distance from the

joints

2 and 3, which have high rigidity and resists the pulling force, to the cut line 50 becomes constant, and a force easily acts on the cut line 50 constantly. Therefore, the belt part 20 can be cleanly and easily broken along the cut line 50.

However, not limited to the above, the cut line 50 may have any shape as long as it has a predetermined length in the vertical direction and the belt portion 20 can be developed in the horizontal direction by breaking the cut line 50. For example, the cut line 50 may have a wavy shape or the like.

In the diaper 1, as shown in FIG. 2, the angle θ <b> 1 formed by the longitudinal center line CL that bisects the absorbent main body 10 in the lateral direction and the front joint 2 is equal to the longitudinal center line CL and the rear joint. It is larger than the angle θ2 formed with the part 3. By doing so, on the front side where the inclination of the joint portion 2 is gentle, the belt portion 20 tends to be inclined upward toward the outer side in the lateral direction. Conversely, on the rear side, the belt portion 20 tends to be inclined upward toward the center in the lateral direction. Therefore, it is possible to prevent the movement of the wearer's leg from being obstructed by the belt portion 20 on the front side. On the other hand, on the rear side, the diaper 1 can be pulled upward, and the wearer's buttocks can be covered. Further, regarding the cut line 50, the angle formed by the longitudinal center line CL may be different between the front side and the rear side.

Also, as described above, the user generally breaks from above the cut line 50. Therefore, the upper end 50a (the end on the waistline opening BH side) of the cut line 50 reaches the waistline opening BH or the upper end 20a of the belt part 20 (for example, the part where the belt part 20 is folded back). Preferably it is located. By doing so, the breaking of the cut line 50 can be started with a relatively weak force, and the cut line 50 can be easily broken.

On the other hand, it is preferable that the lower end 50b (the end on the leg opening LH side) of the cut line 50 does not reach the leg opening LH. If the cut line 50 reaches the leg opening LH, the belt portion 20 is broken violently along the cut line 50 to the end. If it does so, belt part 20 may develop vigorously and excrement may be scattered. Further, as breakage of the cut line 50 progresses, the position near the waistline opening BH gripped by the user first is separated from the breakage position. Then, it is difficult for force to act on the cut line 50, and there is a possibility that the belt portion 20 may break at an unintended position such as lateral tearing along the thread-like elastic member 21.

Therefore, the momentum of breakage of the cut line 50 can be suppressed by stopping the cut line 50 in front of the leg opening LH. Therefore, at the end, the user can be guided to carefully break and deploy the belt portion 20. In addition, the user can be guided to pick up the vicinity of the leg opening LH. Therefore, the belt part 20 can be prevented from being broken at an unintended position.

Specifically, in the longitudinal direction, when the cut line 50 is located closer to the waist opening BH than the elastic member 21a closest to the leg opening LH among the thread-like elastic members 21 of the belt portion 20. Good.

By doing so, the thread-like elastic member 21 can suppress the breaking moment of the cut line 50. Therefore, at the end of the break, the user can guide the user to pick up the vicinity of the leg opening LH and carefully break the belt portion 20 for deployment.

In addition, the cut line 50 may be located on the waist opening BH side of the sheet-like elastic member 42 along the leg opening LH in the vertical direction.

By doing so, the sheet-like elastic member 42 can suppress the breaking moment of the cut line 50. Therefore, at the end of the break, the user can guide the user to pick up the vicinity of the leg opening LH and carefully break the belt portion 20 for deployment.

However, it is not limited to the above. For example, in the diaper 1 of the present embodiment, the

joints

2 and 3 do not reach the leg opening LH so that the

hard joints

2 and 3 do not hit the wearer's leg. Therefore, the length of the cut line 50 may be the same as the length of the

joints

2 and 3. Further, the cut line 50 may reach the leg opening LH. In addition, when the cut line 50 is longer than the

joints

2 and 3, in the range from the

joints

2 and 3 and its extension line to a position spaced apart outward in the lateral direction by a length L in parallel to them, A cut line 50 may be provided.

Further, in the diaper 1, a pair of cut lines 50 are provided on the front side and the rear side, respectively. By providing the front cut line 50 (51), for example, when the wearer himself removes the diaper 1, it is easy to find the start position of the break, and the cut line 50 (without moving the body or arm greatly) 51) can be easily broken. On the other hand, the rear cut line 50 (52) is provided, so that the rear belt portion 20 is separated from the absorbent main body 10 and unfolds on the front side. Therefore, the area of the diaper 1 pulled out from the crotch part of the wearer is reduced, and the diaper 1 can be easily undressed.

Also, the longitudinal length Lb of the rear cut line 50 (52) may be shorter than the vertical length La of the front cut line 50 (51) (Lb <La). In other words, in the direction along the cutoff line 50, the length from the lower end 50b of the cutoff line 50 to the leg opening LH is preferably longer on the rear side than on the front side.

This is because the rear belt portion 20 is larger than the front belt portion 20 in the lateral direction when the wearer stands or sits by the amount of the buttocks with meat. For this reason, it is possible to prevent unnecessary breakage of the belt portion 20 by shortening the rear cut line 50 (52).

However, the present invention is not limited to the above. The length in the vertical direction of the front cut line 50 (51) may be the same as the length in the vertical direction of the rear cut line 50 (52).
In addition, a pair of cut lines 50 may be provided only on one side in the front-rear direction. In this case, it is possible to determine whether the diaper 1 is before or after the presence of the cut line 50.
Further, the cut line 50 is provided only on one side of the joint part 2 on the one side of the front side

joint parts

2, 2, or on one side of the joint part 3 on the side of the pair of rear side

joint parts

3, 3 The cut line 50 may be provided only in the case. Also in this case, the diaper 1 can be easily undressed as compared with the case where the cut line 50 is not provided.

FIG. 6A to FIG. 6C are explanatory diagrams of a method for folding the diaper 1. Usually, the diaper 1 is distributed individually or in a packaged state. In the packaging state, the diaper 1 of the present embodiment is such that the lateral end of the belt portion 20 is folded inward in the lateral direction, and the absorbent main body 10 is folded at a folding position along the lateral direction. And

Specifically, first, at the folding position F1 shown in FIG. 6A, the end portion in the lateral direction of the belt portion 20 is folded inward in the lateral direction so that the non-skin side surfaces face each other. As a result, as shown in FIG. 6B, the end portion in the lateral direction of the belt portion 20 is sandwiched between the absorbent main body 10 folded in half. Thereafter, the absorbent main body 10 is folded in two in the vertical direction at the folding position F2 along the horizontal direction, approximately in the center in the vertical direction of the diaper 1, and the diaper 1 is in the state of FIG. 6C. In this state, the diaper 1 is packaged. Moreover, although not shown in figure, after the edge part of the belt part 20 in the horizontal direction is folded inward in the horizontal direction so that it may be located on the non-skin side surface of the absorbent main body 10, the absorbent main body 10 is in the folding position F2. May be folded.

When the diaper 1 is folded as described above, in the packaging state of the diaper 1 (the state shown in FIG. 6C), the tear line 50 has a waistline opening BH in the vertical direction in the vertical direction rather than the folding position F2 along the horizontal direction of the absorbent main body 10. It is preferably located on the side.

By doing so, it is possible to prevent creases along the lateral direction from being attached to the cut line 50 and its periphery. Therefore, it is possible to prevent the belt portion 20 from being laterally split along the crease while the cut line 50 is broken, and the belt portion 20 can be broken cleanly and easily along the cut line 50.

<< Modification >>
7A to 7C are explanatory views of a modified example of the diaper 1. FIG. The diaper 1 of the modified example includes a hook sheet 60 so as to straddle the cut line 50 as shown in FIG. 7A. The hook sheet 60 is a sheet provided with, for example, a male material (hook-like protrusion) of a hook-and-loop fastener, and is a sheet that can be locked to the nonwoven fabric constituting the belt portion 20. The hook sheet 60 is provided on the non-skin side surface of the belt portion 20, and the surface on which the protrusion is provided faces the belt portion 20. Here, as shown in FIG. 7B, it is assumed that the hook sheet 60 is fixed between the absorbent main body 10 and the belt portion 20 in the joint portion 3. However, the present invention is not limited thereto, and the hook sheet 60 may be fixed to the belt portion 20 with an adhesive, for example. In addition, the hook sheet 60 is not directly locked to the belt portion 20, and a female material of a hook-and-loop fastener may be provided on the non-skin side surface of the belt portion 20.

In the diaper 1 of the modified example, when the user breaks the cut line 50, the belt portion 20 is broken, but the hook sheet 60 is not broken. Therefore, as shown in FIG. 7C, the hook sheet 60 (surface on which the protrusion is provided) is exposed. Therefore, the diaper 1 can be worn again by locking the non-skin side surface of the belt portion 20 to the hook sheet 60 even after the cut line 50 is broken.

According to such a diaper 1, when the user confirms the state of excretion and determines that the worn diaper 1 is still usable after the breakage of the tear line 50, the diaper is utilized using the hook sheet 60. 1 can be worn again. Further, when the absorbent pad is used in the diaper 1, the absorbent pad can be easily replaced. Moreover, it can suppress that the tear line 50 breaks unnecessarily because the hook sheet 60 straddles the tear line 50. Moreover, even if the tear line 50 is unnecessarily broken, the diaper 1 can be worn using the hook sheet 60.

7A, the lengths of the hook sheet 60 and the cut line 50 are the same. However, the present invention is not limited to this, and the hook sheet 60 may be shorter or longer than the cut line 50. By shortening the hook sheet 60, it is difficult to give the wearer a sense of incongruity. Conversely, by making the hook sheet 60 longer, the belt portion 20 can be firmly fixed to the hook sheet 60 at the time of re-wearing. Moreover, when the diaper 1 is provided with a plurality of cut lines 50, hook sheets 60 corresponding to the respective cut lines 50 may be provided, or only hook sheets 60 corresponding to some cut lines 50 may be provided. Good.

As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof.

1 diaper (pants-type absorbent article), 2 joints, 3 joints,
10 Absorbent body, 11 Top sheet, 12 Absorber (absorbent core),
13 Back sheet, 14 Exterior sheet, 15 Hydrophobic sheet,
20 belt part, 21 elastic member (thread-like elastic member),
30 leg gathers, 31 elastic members,
40 sheet member, 41 sheet, 42 sheet-like elastic member,
50 cut line, 60 hook sheet,
BH waistline opening, LH leg opening,

Claims

A pants-type absorbent article having a longitudinal direction, a lateral direction, and a front-rear direction,
An absorptive body that is folded in two in the longitudinal direction, the longitudinal direction being along the longitudinal direction;
A pair of belt portions disposed on both sides of the absorbent body in the lateral direction and extending and contracting in the lateral direction;
A pair of joint portions for joining at least the absorbent main body and each of the pair of belt portions are respectively provided on the front side and the rear side in the front-rear direction;
The joint is inclined outward in the lateral direction from the waistline opening side toward the leg hole opening side in the longitudinal direction,
The longitudinal end of the absorbent body forms part of the waistline opening and does not expand or contract in the lateral direction,
When the length in the lateral direction of the end portion of the absorbent main body is L,
A cut line having a predetermined length in the longitudinal direction is provided in a range from the joint to a position parallel to the joint by a distance of L to the outside in the lateral direction. Pants-type absorbent article.
The pant-type absorbent article according to claim 1,
The pants-type absorbent article, wherein the cut line is along the joint.
The pant-type absorbent article according to claim 1 or 2,
The pants-type absorbent article, wherein the cut line does not reach the leg opening.
The pant-type absorbent article according to claim 3,
The belt portion has a plurality of thread-like elastic members that expand and contract in the lateral direction, arranged in the longitudinal direction,
The pants-type absorbent article, wherein the cut line is located closer to the waistline opening than the thread-like elastic member closest to the leghole opening in the longitudinal direction.
The pant-type absorbent article according to claim 3 or claim 4,
A sheet-like elastic member is provided along the leg opening.
The pants-type absorbent article, wherein the cut line is located on the waistline opening side of the sheet-like elastic member in the longitudinal direction.
The pant-type absorbent article according to any one of claims 1 to 5,
In the packaging state of the pants-type absorbent article, the lateral end of the belt portion is folded inward in the lateral direction, and the absorbent main body is folded at a folding position along the lateral direction. And
In the packaging state, the tear line is located on the waistline opening side in the longitudinal direction with respect to the folding position of the absorbent main body.
The pant-type absorbent article according to any one of claims 1 to 6,
The absorbent body has an absorbent core for absorbing liquid;
The underpants type absorbent article characterized in that the lateral length of the end portion of the absorbent main body is shorter than the lateral length of the absorbent core.
The pant-type absorbent article according to any one of claims 1 to 7,
The cut line is provided on each of the front side and the rear side,
The underpants type absorbent article characterized in that the rear cut line has a shorter length in the longitudinal direction than the front cut line.