CN214434825U

CN214434825U - Absorbent article

Info

Publication number: CN214434825U
Application number: CN202022042117.XU
Authority: CN
Inventors: 清水纪子; 井上拓也; 松田侑也
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2019-09-30
Filing date: 2020-09-17
Publication date: 2021-10-22
Anticipated expiration: 2030-09-17

Abstract

The utility model provides an absorbent article, wherein the user discerns the flexible of flexible component more easily. The absorbent article includes: a telescopic region in which a telescopic member is disposed; opening the waist; a pair of leg openings; and a pattern portion in which a stretchable pattern is provided. The stretch pattern is visually recognizable from the non-skin side of the absorbent article. The stretchable pattern has a portion overlapping with the stretchable region. The stretchable pattern in the stretched state has a plurality of inclined portions, and the plurality of inclined portions are inclined with respect to the stretching direction of the stretchable member. The plurality of inclined portions are arranged side by side along the telescopic direction and are positioned in pairs with respect to a reference, which is a specific straight line extending along the telescopic direction. According to the present invention, the wearer of the absorbent article and the person wearing the absorbent article on the wearer can more easily recognize the expansion and contraction of the expansion and contraction member from the change in the inclination angle of the inclined portion.

Description

Absorbent article

Technical Field

The utility model relates to an absorbent article.

Background

Absorbent articles such as so-called pants-type disposable diapers, unfolding-type disposable diapers, and the like have been conventionally known. For example, patent document 1 discloses a pants-type disposable diaper having the following structure: the absorbent main body is arranged to bridge between the front body sheet outer covering and the back body sheet outer covering; the front body outer package and the back body outer package are both provided with waist stretchable material and abdomen stretchable material; both widthwise side edges of the front-body exterior body and the back-body exterior body are joined to each other so as to form a waist opening and leg openings.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2013-138795

SUMMERY OF THE UTILITY MODEL

Problem to be solved by utility model

In the pants-type disposable diaper having an extensible material disclosed in patent document 1, it is difficult for a user to recognize the fit to the waist of the wearer by the extension and contraction of the extensible material from the appearance of the diaper. In particular, there are problems as follows: in a disposable diaper for infants, it is difficult for a caregiver or the like to recognize the fitting of the disposable diaper to the body of the infant.

The present invention has been made in view of the conventional problems such as those described above, and it is an aspect of the present invention to provide an absorbent article that makes it easier for a user to recognize the expansion and contraction of an expansion member.

Means for solving the problems

A main aspect of the present invention for achieving the above-described aspect is an absorbent article including: a telescopic region in which a telescopic member is disposed; opening the waist; a pair of leg openings; and a pattern portion in which a stretchable pattern is provided, the stretchable pattern being visually recognizable from a non-skin side of the absorbent article, the stretchable pattern having a portion overlapping the stretchable region, the stretchable pattern in an extended state having a plurality of inclined portions inclined with respect to a stretching direction of the stretchable member, the plurality of inclined portions being arranged side by side along the stretching direction, the plurality of inclined portions being arranged in pairs with reference to a specific straight line extending along the stretching direction, the stretchable pattern being formed using a plurality of colors.

The utility model also provides an absorbent article, it includes: a telescopic region in which a telescopic member is disposed; opening the waist; a pair of leg openings; and a pattern portion in which a stretchable pattern is provided, the stretchable pattern being visually recognizable from a non-skin side of the absorbent article, the stretchable pattern having a portion overlapping with the stretchable region, the stretchable region being provided so as to extend along the leg opening, the stretchable pattern in an extended state having a plurality of inclined portions inclined with respect to a stretching direction of the stretchable member, the plurality of inclined portions being arranged side by side along the stretching direction, the plurality of inclined portions being arranged in pairs with reference to a specific straight line extending along the stretching direction, the stretchable pattern having a portion overlapping with the stretchable member when viewed in a thickness direction, the stretchable pattern being distant from an end of the leg opening.

The utility model also provides an absorbent article, it includes: a telescopic region in which a telescopic member is disposed; opening the waist; a pair of leg openings; and a pattern portion in which a stretchable pattern is provided, the stretchable pattern being visually recognizable from a non-skin side of the absorbent article, the stretchable pattern having a portion overlapping with the stretchable region, the stretchable region being provided to extend along the leg opening, the stretchable pattern in an extended state having a plurality of inclined portions inclined with respect to a stretching direction of the stretchable member, the plurality of inclined portions being arranged side by side along the stretching direction, the plurality of inclined portions being arranged in pairs with reference to a specific straight line extending along the stretching direction, the stretchable pattern having a portion overlapping with the stretchable member when viewed in a thickness direction, the absorbent article having an up-down direction, a left-right direction, and a front-back direction, the absorbent article further comprising an absorbent main body and a pair of waist body portions, both side ends of the absorbent main body are the stretchable regions extending along the leg openings, the stretchable pattern is provided so as to span the entire region in the up-down direction of both side ends of the absorbent main body, and the stretchable pattern provided in the upper end portion of the absorbent main body and the upper end portion of the absorbent main body is covered with the waistline portion.

Preferably, in the extended state, a length of the inclined portion in the telescopic direction is larger than a length of the inclined portion in an orthogonal direction orthogonal to the telescopic direction.

Preferably, in the extended state, the stretchable pattern includes a pair of reversely inclined portions which are symmetrical to the inclined portions with the specific straight line as a reference in an orthogonal direction, which is a direction orthogonal to the stretching direction, each of the reversely inclined portions being provided between the inclined portions adjacent to the reversely inclined portions in the stretching direction.

Preferably, in the extended state, the inclined portion and the reverse inclined portion adjacent to each other in the telescopic direction are separated from each other in the telescopic direction.

Preferably, in the elongated state, the inclined portions adjacent to each other in the orthogonal direction are separated from each other in the orthogonal direction.

Preferably, in the extended state, in the telescopic direction, the inclined portion and the reverse inclined portion on one side with respect to the specific straight line in the orthogonal direction are connected, and the inclined portion and the reverse inclined portion on the other side with respect to the specific straight line in the orthogonal direction are connected, in the orthogonal direction, the inclined portions adjacent in the orthogonal direction are connected, and the reverse inclined portions adjacent in the orthogonal direction are connected.

Preferably, in the extended state, the inclined portion has a curved portion.

Preferably, the telescopic region is arranged to extend along the leg opening.

Preferably, the stretchable pattern has a portion overlapping with the stretchable member when viewed from a thickness direction in an elongated state.

Preferably, the stretchable member is an elastic thread, a plurality of elastic threads are arranged along the leg opening, and in the stretched state, the number of elastic threads having a portion overlapping with the stretchable pattern when viewed from the thickness direction is larger than the number of elastic threads having no portion overlapping with the stretchable pattern when viewed from the thickness direction.

Preferably, the absorbent article has a vertical direction, a horizontal direction, and a front-rear direction, the stretchable member is an elastic thread, a plurality of elastic threads are arranged along the leg opening in the stretched state, and an innermost end of the stretchable pattern is positioned inward in the horizontal direction with respect to the elastic thread arranged innermost.

Preferably, the absorbent article has a vertical direction, a horizontal direction, and a front-rear direction, the stretchable member is an elastic thread, a plurality of elastic threads are arranged along the leg opening, and a force for contracting the elastic thread located at the innermost side in the horizontal direction per unit length is larger than a force for contracting the elastic thread located at the outermost side in the horizontal direction per unit length.

Preferably, the absorbent article further comprises: a non-telescopic region in which the telescopic member is not provided; and a non-pattern portion in which the stretchable pattern is not disposed, and which has a portion overlapping with the non-stretchable region.

Preferably, the stretchable region is provided so as to extend along the leg opening, and in an elongated state, the stretchable pattern is bilaterally symmetric with respect to the specific straight line, the stretchable pattern includes a pair of reversely inclined portions that are symmetric with the inclined portions with the specific straight line as a reference in an orthogonal direction, which is a direction orthogonal to the stretching direction, each of the reversely inclined portions is provided between the inclined portions adjacent to the reversely inclined portions in the stretching direction, and a plurality of rhombic regions surrounded by the paired inclined portions and the paired reversely inclined portions are provided along the stretching direction.

Features of the present invention other than those described above will become apparent from reading the description of the present specification with reference to the accompanying drawings.

Effect of the utility model

According to the present invention, when the extensible member is extended from its natural state, although the length of the extensible pattern in the direction orthogonal to the extending direction is unchanged, the length of the extensible pattern in the extending direction is further extended. This makes it easier for the wearer of the absorbent article and the person who wears the absorbent article on the wearer to recognize the expansion and contraction of the expansion/contraction member from the change in the angle of inclination of the inclined portion.

Drawings

Fig. 1 is a perspective view of a pants-type disposable diaper 1 (hereinafter referred to as "diaper").

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

Figure 3 is a plan view of the diaper 1 in an unfolded and extended state, seen from the non-skin side of the diaper 1.

Fig. 4 is an enlarged view of a portion X in fig. 3.

Fig. 5A and 5B are diagrams illustrating changes in the stretch pattern DF.

Fig. 6A to 6F are diagrams illustrating modifications of the stretch pattern DF.

Detailed Description

At least the following matters will become clear with reference to the description of the present specification and the accompanying drawings.

An absorbent article, comprising: a telescopic region in which a telescopic member is disposed; opening the waist; a pair of leg openings; and a pattern portion in which a stretchable pattern is provided, the stretchable pattern being visually recognizable from a non-skin side of the absorbent article, the stretchable pattern having a portion overlapping the stretchable region, the stretchable pattern in an extended state having a plurality of inclined portions inclined with respect to a stretching direction of the stretchable member, the plurality of inclined portions being arranged side by side along the stretching direction, the plurality of inclined portions being positioned and arranged in pairs with respect to a reference, the reference being a specific straight line extending in the stretching direction.

With such an absorbent article, when the stretchable member is stretched from its natural state, although the length of the stretchable pattern in the direction orthogonal to the stretching direction is unchanged, the length of the stretchable pattern in the stretching direction is further extended. This makes it easier for the wearer of the absorbent article and the person who wears the absorbent article on the wearer to recognize the expansion and contraction of the extensible member from the change in the angle of inclination of the inclined portion.

In such an absorbent article, it is desirable that, in the extended state, the length of the inclined portion in the stretchable direction is larger than the length of the inclined portion in an orthogonal direction orthogonal to the stretchable direction.

With such an absorbent article, the shape of the inclined portion is more easily maintained not only in its extended state but also in its natural state.

In such an absorbent article, it is desirable that the stretchable pattern includes a pair of reversely inclined portions which are symmetrical with the inclined portions with the specific straight line as a reference in an orthogonal direction which is a direction orthogonal to the stretching direction in an extended state, each of the reversely inclined portions being provided between the inclined portions adjacent to the reversely inclined portion in the stretching direction.

With such an absorbent article, the change in the inclination angles of the inclined portion and the reversely inclined portion makes it easier for the user to recognize the extension and contraction of the extensible member.

In such an absorbent article, it is desirable that, in the extended state, the inclined portion and the reversely inclined portion which are adjacent to each other in the stretchable direction are separated from each other in the stretchable direction.

With such an absorbent article, it is easier for the user to further recognize that the area surrounded by the paired inclined portions and reversely inclined portions has a large size in the expansion and contraction direction. In addition, the elongation of the telescoping members makes it easier for the user to identify changes in the size of the enclosed area.

In such an absorbent article, it is desirable that, in the extended state, the inclined portions adjacent to each other in the orthogonal direction are separated from each other in the orthogonal direction.

With such an absorbent article, it is easier for the user to further recognize that the region surrounded by the paired inclined portions and reversely inclined portions has a large size in the orthogonal direction. In addition, the elongation of the telescoping members makes it easier for the user to identify changes in the size of the enclosed area.

In such an absorbent article, it is desirable that, in the extended state, the inclined portion and the reversely inclined portion on one side with respect to the specific straight line in the orthogonal direction are connected and the inclined portion and the reversely inclined portion on the other side with respect to the specific straight line in the orthogonal direction are connected, in the orthogonal direction, the inclined portions adjacent in the orthogonal direction are connected and the reversely inclined portions adjacent in the orthogonal direction are connected.

With such an absorbent article, the region surrounded and enclosed by the inclined portion and the reverse inclined portion can be visually identified. Therefore, the variation in the size of the closed region increases as the extensible member is extended, so that the user can more easily recognize the extension and contraction of the extensible member.

In such an absorbent article, it is desirable that the inclined portion has a curved portion in an elongated state.

With such an absorbent article, it is easier to give the wearer or a person wearing the absorbent article to the wearer an impression of soft fit of the stretchable region.

In such an absorbent article, it is desirable to use a plurality of colors in the stretch pattern.

With such an absorbent article, the stretch pattern is more noticeable to the user, and the change in the angle of inclination of the inclined portion makes it easier for the user to recognize the stretch of the stretchable member.

In such an absorbent article, it is desirable that the stretchable region is provided so as to extend along the leg openings.

With such an absorbent article, the variation in the angle of inclination of the inclined portion makes it easier for the user to recognize the stretch region extending along the leg opening and to recognize that the leg opening fits the wearer's leg more easily.

In such an absorbent article, it is desirable that the absorbent article has a portion where the stretch pattern overlaps with the stretch member when viewed from the thickness direction in the stretched state.

With such an absorbent article, the inclination angle of the inclined portion becomes easier to change, so that the user more easily recognizes the extension and contraction of the extensible member.

In such an absorbent article, it is desirable that the stretchable member is an elastic thread, a plurality of elastic threads are arranged along each of the leg openings, and the number of elastic threads having a portion overlapping with the stretchable pattern when viewed from the thickness direction is larger than the number of elastic threads having no portion overlapping with the stretchable pattern when viewed from the thickness direction in the stretched state.

With such an absorbent article, the angle of inclination of the inclined portion can be changed to a greater extent.

In such an absorbent article, it is desirable that the absorbent article has a vertical direction, a horizontal direction, and a front-rear direction, the stretchable member is an elastic thread, a plurality of elastic threads are arranged along each of the leg openings in the stretched state, and an innermost end of the stretchable pattern is positioned inward in the horizontal direction with respect to the elastic thread arranged innermost.

With such an absorbent article, even when the wearer moves the legs while wearing, the risk of the stretch pattern not being visually recognized due to deformation of the stretch region extending along the leg openings can be reduced. Further, if the stretch pattern cannot be visually recognized around the leg openings, the diaper is usually in a state where the leg openings penetrate the legs of the wearer. Thus, having the stretch pattern in a state that can be visually recognized during wearing can reduce the risk of leakage of excrement from the leg openings due to the leg openings piercing the legs of the wearer.

In such an absorbent article, it is desirable that the stretch pattern is located away from the end of each of the leg openings.

With such an absorbent article, the stretchable pattern is provided separately from the end of each leg opening. Therefore, the stretch pattern in the worn state is elongated and becomes larger than the stretch pattern in the natural state, so that the elongation of the stretch region is more easily recognized by the wearer and the person wearing the absorbent article to the wearer. In addition, the absence of stretch patterns in the ends of the leg openings that will be in direct contact with the wearer's legs makes it easier for the user to recognize the contraction of the stretch regions and recognize that the absorbent article is more easily fitted to the wearer's legs.

In such an absorbent article, it is desirable that the absorbent article has a vertical direction, a horizontal direction, and a front-rear direction, the stretchable member is an elastic thread, a plurality of elastic threads are arranged along each of the leg openings, and a force for contracting the elastic thread located on the innermost side in the horizontal direction per unit length is larger than a force for contracting the elastic thread located on the outermost side in the horizontal direction per unit length.

With such an absorbent article, even if the wearer moves the legs while wearing the absorbent article, the stretchable region extending along the leg openings can be maintained in a state of conforming to the shape of the legs of the wearer. This makes it easier for the user to recognize the stretch pattern.

In such an absorbent article, it is desirable that the absorbent article has an up-down direction, a left-right direction, and a front-back direction, the absorbent article further includes an absorbent main body, both side ends of the absorbent main body are the stretchable regions extending along the leg openings, the stretchable pattern is provided so as to span the entire region in the up-down direction of each of both side ends of the absorbent main body, and at least either one of the pair of waist portions covers the corresponding upper end portion of the absorbent main body and the stretchable pattern provided in the corresponding upper end portion of the absorbent main body.

With such an absorbent article, the wearer more easily recognizes that the stretch region is provided across the entire area along each leg opening, thereby more easily creating the impression that the absorbent article more easily fits around the entire area of the wearer's legs.

In such an absorbent article, it is desirable that the absorbent article further includes: a non-telescopic region in which the telescopic member is not provided; and a non-pattern portion in which the stretchable pattern is not disposed, and which has a portion overlapping with the non-stretchable region.

With such an absorbent article, the user can more easily recognize the stretchable region and the non-stretchable region.

In such an absorbent article, it is desirable that the stretchable region is provided so as to extend along the leg opening, and the stretchable pattern is bilaterally symmetric with respect to the specific straight line in the stretched state, the stretchable pattern includes a pair of reversely inclined portions that are symmetric with the inclined portions with the specific straight line as a reference in an orthogonal direction, which is a direction orthogonal to the stretchable direction, each of the reversely inclined portions is provided between the inclined portions adjacent to the reversely inclined portions in the stretchable direction, and a plurality of rhombic regions surrounded by the paired inclined portions and the paired reversely inclined portions are provided along the stretchable direction.

With such an absorbent article, the wearer and/or a person wearing the absorbent article on the wearer visually recognizes the diamond shape formed by the inclined portion and the reversely inclined portion. This makes it easier to discern the telescoping of the telescoping member along the leg opening from the change in size of the diamond shape with the elongation of the telescoping member.

Embodiments of the present invention are described in detail below with reference to the accompanying drawings

Hereinafter, an embodiment of the absorbent article according to the present invention will be described by taking a pants-type disposable diaper for infants as an example. Note that the absorbent article according to the present invention is not limited to disposable diapers for infants, and may be applied to disposable diapers for adults and sanitary shorts (sanitarian shorts), for example. The present invention is not limited to a pants-type disposable diaper, and can be applied to an absorbent article such as a so-called open-type disposable diaper.

Disposable diaper 1 of the pants type

Fig. 1 is a perspective view of a pants-type disposable diaper 1 (hereinafter referred to as "diaper"). Fig. 2 is a plan view in an unfolded and elongated state as viewed from the skin side of the diaper 1. Figure 3 is a plan view of the diaper 1 in an unfolded and extended state, seen from the non-skin side of the diaper 1. The "developed state" is a state in which the diaper 1 is opened and flattened by separating such bonded regions 2: both side ends of the abdomen-side waist portion 20 positioned on both sides of the diaper 1 in the pants-type state and both side ends of the back-side waist portion 30 positioned on both sides of the diaper 1 in the pants-type state are joined at the joining region 2. The "stretched state" is a state in which the stretch/contraction member included in the diaper 1 is stretched to such an extent that the wrinkles of the diaper 1 cannot be visually recognized. Specifically, the diaper 1 is stretched to a state where the dimension of a constituent member (for example, a belly-side waist portion 20 described later) of the diaper 1 matches or is close to the dimension of the member itself. Line C-C in fig. 2 is the left-right direction center line.

In the pants-type state shown in fig. 1, the diaper 1 has a vertical direction and a horizontal direction, and the diaper 1 includes a waist opening BH and a pair of leg openings LH. The hip opening BH side is an upper side and the crotch side is a lower side with respect to the up-down direction. In addition, the thickness direction refers to a direction in which the constituent members of the diaper 1 overlap each other, the skin side refers to the side in the thickness direction that is in contact with the wearer, and the non-skin side refers to the side in the thickness direction that is not in contact with the wearer.

The diaper 1 is a so-called three-piece diaper, and the diaper 1 includes an absorbent main body 10, a ventral waistline portion 20, and a dorsal waistline portion 30. The abdomen-side waistline portion 20 covers the front (abdomen) side of the wearer, and the back-side waistline portion 30 covers the back side of the wearer.

When the diaper 1 is in the developed state shown in fig. 2, the abdominal-side waistline portion 20 and the back-side waistline portion 30 are disposed so that their longitudinal directions coincide with the left-right direction of the diaper 1. One longitudinal end of the absorbent body 10 is disposed in the center of the abdomen-side waistline portion 20 in the left-right direction, and the other longitudinal end of the absorbent body 10 is disposed in the center of the back-side waistline portion 30 in the left-right direction.

In the developed diaper 1 shown in fig. 2, the diaper 1 has a shape symmetrical in the left-right direction with respect to the center line C-C. The absorbent main body 10 is folded in two at the substantially center in the longitudinal direction so that the longitudinal direction of the absorbent main body 10 is in the up-down direction of the diaper 1, and both side ends of the abdomen-side waist portion 20 in the left-right direction of the diaper 1 and both side ends of the back-side waist portion 30 in the left-right direction of the diaper 1 are bonded by means of such as thermal welding or ultrasonic welding, with the result that a pair of bonded regions 2 are formed. Thus, the diaper 1 in the pants-type state shown in fig. 1 is produced.

The absorbent main body 10 includes: an absorbent body 11; a liquid-permeable topsheet 12 disposed on the skin side with respect to the absorbent body 11; a liquid-impermeable back sheet 13 disposed on the non-skin side with respect to the absorbent body 11; a side sheet 16 disposed on the non-skin side with respect to the back sheet 13; and an outer sheet 14 disposed on the non-skin side with respect to the side sheet 16.

The absorbent body 11 has a substantially rectangular shape in plan view, and the absorbent body 11 includes: an absorbent core 11A that absorbs and retains excretory fluid such as urine; a liquid-permeable core wrap sheet 11B covering the absorbent core 11A. Examples of the absorbent core 11A are molded bodies such as: which is made of liquid-absorbent fibers (e.g., pulp containing superabsorbent polymer (SAP)) and is shaped in shape into a predetermined shape such as a substantially hourglass shape in plan view. Examples of the core wrap sheet 11B are liquid impermeable sheets such as tissue paper, nonwoven fabric, and the like.

As shown in fig. 2, leg elastic members (stretchable members) 15 are provided on both sides of the absorbent main body 10 in the left-right direction, and stretchable regions (also referred to as "leg gathers") 50 are formed. As shown in fig. 1, the stretchable regions 50 of the diaper 1 in the pants-type state are respectively provided so as to extend along the leg openings LH, and the diaper 1 fits around the legs of the wearer due to the stretching of the leg elastic members 15. Examples of the leg elastic member 15 are an elastic thread and a stretchable sheet. In the diaper 1, a plurality of elastic threads extending in the longitudinal direction are used; for example, the elastic threads are fixed between two layers of the exterior sheet 14 folded inward in the left-right direction while being elongated in the longitudinal direction of the absorbent main body 10.

The stretchable region 50 is a region stretchable in the longitudinal direction of the diaper 1 in the developed state shown in fig. 2 and 3. Specifically, in the leg opening LH located on one side in the left-right direction, the stretchable region 50 is a region in a range from the outermost leg elastic member 15 to the innermost leg elastic member 15 in the left-right direction and in a range corresponding to the effective length of the leg elastic member 15 in the longitudinal direction. In fig. 2, the telescopic region 50 is a diagonally downward-rightward hatched region. The later-described stretch pattern DF (fig. 3) has a portion overlapping with the stretch region 50 when viewed in the thickness direction.

In the case of using elastic threads as the leg elastic members 15, it is preferable to dispose a plurality of elastic threads, and it is more preferable to dispose 5 or more elastic threads. In the diaper 1, the length of each stretchable region 50 in the left-right direction is 20mm or more, and seven leg elastic members 15 are arranged side by side in the left-right direction in the stretchable region. Provided that only one leg elastic member 15 is arranged, there is a risk of local tightening around the leg of the wearer. However, providing a greater number of leg elastic members 15 allows the entire stretch region 50 to fit the wearer in surface-to-surface contact, thereby reducing the risk of localized tightening around the wearer's legs. In other words, the greater the number of leg elastic members 15 arranged in a larger region in the left-right direction, the more easily the stretch regions 50 can be made to fit the legs of the wearer in a surface-to-surface contact manner.

As shown in fig. 2 and the like, the leg gathers 50 of the diaper 1 are preferably each composed of the absorbent body 11, the outer-covering sheet 14, the leg elastic members 15, and the side sheets 16, which are members different from the topsheet 12 and the like. During wearing, even in a state where the absorbent body 11 having high rigidity and the topsheet 12 covering the absorbent body 11 are fixed under the crotch of the wearer, the side sheet 16 or the like (which is an independent member) makes it easier for the leg gathers 50 to flexibly move around the leg openings LH that move relatively frequently, while keeping the leg gathers 50 fitted around the legs of the wearer.

The abdomen-side waist portion 20 includes a skin side sheet 21, a non-skin side sheet 22, and a plurality of linear elastic members 23. The back waist portion 30 includes a skin side sheet 31, a non-skin side sheet 32, and a plurality of linear elastic members 33. The

skin side sheets

21 and 31 are bonded to the

non-skin side sheets

22 and 32, respectively, with an adhesive such as a hot melt adhesive.

The

non-skin side sheets

22 and 32 are disposed on the non-skin side with respect to the

skin side sheets

21 and 31, respectively. The

skin side sheets

21 and 31 and the

non-skin side sheets

22 and 32 are disposed on the non-skin side with respect to the absorbent main body 10. For the

skin side sheets

21 and 31 and the

non-skin side sheets

22 and 32, materials such as SMS nonwoven fabric (spunbond/meltblown/spunbond nonwoven fabric), spunbond nonwoven fabric, air-through nonwoven fabric, plastic sheet, perforated plastic sheet, and laminated sheet made by laminating such sheets or fabrics can be used.

The plurality of linear

elastic members

23 and 33 are arranged side by side in the vertical direction between the

skin side sheets

21 and 31 and the

non-skin side sheets

22 and 32, and are fixed in a state of being stretched in the horizontal direction. Therefore, the abdominal-side waistline portion 20 and the back-side waistline portion 30 can be stretched in the right-left direction to fit the waistline of the wearer. The linear

elastic members

23 and 33 may be composed of linear elastic members made of rubber, spandex (spandex), or the like.

In the back-side waistline portion 30, the linear elastic member 33 is disposed in a range from the upper end portion to the lower end portion. However, the upper end portion of the abdomen-side waistline portion 20 is not provided with the linear elastic member 23, and instead is provided with the stretchable sheet 24 having the right-left directional stretchability.

In the structure in which the stretchable sheet 24 is provided instead of the linear elastic member 23 at the upper end of the abdomen-side waistline portion 20, the upper end of the abdomen-side waistline portion 20 is in close contact with the wearer's ground. Therefore, this suppresses partial tightening, and the impression due to the elastic member can be suppressed. In particular, the infant has a raised abdominal region, and therefore it is preferable to suppress tightening around the abdomen-side waist portion 20. In addition, when the diaper 1 is to be put on, the stretching force in the upper end portions of the

waistline portions

20 and 30 greatly affects the ability to easily stretch (spread open) the waistline opening BH. The stretchable sheet 24 has a property of being easily stretched from a natural state but not easily contracted from an extended state. For this reason, by providing the stretchable sheet 24 at the upper end portion of the abdominal-side waistline portion 20, it is possible to make it easier to stretch the waistline opening BH when putting on the diaper 1, and also to prevent the front region from contracting after the

waistline portions

20 and 30 are fitted to the wearer.

The stretchable sheet 24 may be composed of a stretchable fibrous nonwoven fabric sheet manufactured by a known manufacturing method, such as a stretchable fibrous nonwoven fabric sheet having a mass of 10g/m²To 40g/m²More preferably 15g/m²To 30g/m²A spunbonded nonwoven fabric sheet, an air-permeable nonwoven fabric sheet, a needle-punched nonwoven fabric sheet, or the like. Constituting elastic fibersThe raw material of (a) is a thermoplastic elastomer, rubber, or the like. In particular, in the case where the raw material is a thermoplastic elastomer, melt spinning can be performed by an extruder similarly to a general thermoplastic resin. The fibers thus obtained can be easily heat-welded, which is advantageous for a stretchable fiber nonwoven fabric sheet. Examples of the thermoplastic elastomer include styrene elastomers, olefin elastomers, polyester elastomers, and polyurethane elastomers. Any of the above may be used alone, or two or more may be used in combination. The stretchable sheet only needs to exhibit elasticity in at least the right-left direction, and may exhibit elasticity in two or more directions. The stretch coefficient of the stretchable sheet 24 in the left-right direction is preferably a coefficient of about 1.2 to 3.0.

The stretch pattern DF is defined as

The stretch pattern DF provided in the diaper 1 will be explained below. Fig. 4 is an enlarged view of a portion X in fig. 3. For convenience of explanation, the stretch pattern DF is shaded with dots, oblique lines, and the like in fig. 3 to 5.

The stretch pattern DF is arranged in such a way that it can be visually identified from the non-skin side of the diaper 1. Each stretch pattern DF has a portion overlapping with the corresponding stretch region 50, and more preferably, as shown in fig. 4, the stretch pattern DF is disposed within the stretch region 50. The stretch pattern DF may be provided by applying a predetermined print (gravure, flexo, inkjet, etc.) to the exterior sheet 14 and/or the side sheet 16, or by pre-attaching a separate material printed with the stretch pattern DF to the exterior sheet 14 and/or the side sheet 16.

As shown in fig. 3, the diaper 1 comprises a non-stretch region N without a stretch member. Specifically, the non-stretch region N is a region not having the leg elastic members 15, the thread-like

elastic members

23 and 33, and the like, for example, a region overlapping the absorbent body 11 when viewed from the thickness direction. In the portion overlapping with the non-stretch region N, the diaper 1 may have a non-patterned portion. The non-pattern part is an area without the stretch pattern DF; the non-pattern portion may be a blank area (a pattern area) where no pattern is provided, or may be an area having a pattern (e.g., any pattern of characters, decorations, or the like) different from the stretch pattern DF.

The stretch pattern DF includes a plurality of inclined portions K inclined with respect to the stretching direction and arranged side by side along the stretching direction. In the diaper 1, the "stretch direction" is a direction in which the leg elastic members 15 stretch and contract, and is a direction along the up-down direction of the diaper 1 in a natural state and the longitudinal direction of the diaper 1 in an unfolded state. The orthogonal direction orthogonal to the expansion and contraction direction is the left-right direction.

The inclined portion K of the stretch pattern DF shown in fig. 4 will be specifically described below. The stretch pattern DF includes, as the inclined portions K, a first inclined portion K1, a second inclined portion K2, a third inclined portion K3, and a fourth inclined portion K4, which are straight in shape.

In fig. 4, the first inclined portion K1 and the second inclined portion K2 located on one side in the left-right direction (the left side in this example) have the same shape and are arranged apart from each other by a certain distance in the telescopic direction. In addition, the third inclined portion K3 and the fourth inclined portion K4 located on the other side in the left-right direction (the right side in this example) have the same shape and are arranged apart from each other by a certain distance in the telescopic direction. The first inclined portion K1 and the second inclined portion K2 are paired with the third inclined portion K3 and the fourth inclined portion K4, respectively, with respect to a reference which is a virtual line (specific straight line) I-I extending in the telescopic direction.

Fig. 5A and 5B are diagrams illustrating changes in the stretch pattern DF. For the sake of illustration, fig. 5A and 5B show only the stretch pattern DF inside the portion X, and the stretch pattern DF, the leg elastic members 15, and the like outside the portion X are omitted. Fig. 5A shows the stretch pattern DF in a natural state, and fig. 5B shows the stretch pattern DF in an extended state.

When the leg elastic members 15 (stretchable region 50) change from the natural state to the stretched state, the length in the left-right direction of the stretchable pattern DF is not stretched but contracted in some cases. Conversely, the expansion and contraction direction is elongated. As a result, when the diaper 1 changes from the natural state to the extended state, the angle between the inclined portion K and the extension and contraction direction changes. The wearer of the diaper 1 and/or the person who wears the diaper 1 on the wearer (hereinafter also referred to as "wearer or the like") visually recognizes the change in the angle of the inclined portion K, which makes it easier for the wearer or the like to recognize the extension and contraction of the leg elastic members 15. In this configuration, the third inclined portion K3 and the fourth inclined portion K4 are provided on the other side in the left-right direction in addition to the first inclined portion K1 and the second inclined portion K2 provided on the one side in the left-right direction, forming a pair of inclined portions with respect to a reference as the virtual line I-I. Such a structure makes it easier for the wearer to recognize that the length of the stretchable pattern DF in the left-right direction is not increased, and makes it easier for the wearer to recognize that the change due to stretching in the stretching direction of the stretchable pattern DF is large. Further, providing the stretchable region 50 extending the leg openings LH and disposing the stretchable pattern DF makes it easier for the wearer or the like to recognize that the diaper 1 is a diaper in which the stretchable region 50 is fitted around the legs of the wearer.

More preferably, the first inclined portion K1 and the second inclined portion K2 are paired with the third inclined portion K3 and the fourth inclined portion K4, respectively, and are symmetrically arranged with respect to a reference as the virtual line I-I. This makes it easier for the wearer or the like to recognize an increase in the length in the expansion and contraction direction of each inclined portion K based on the length in the left-right direction of each inclined portion K.

Further, the following configuration is preferable: the stretch pattern DF includes a pair of reversely inclined portions R symmetrical in the left-right direction with the pair of the first inclined portion K1 and the third inclined portion K3 with the virtual line I-I as a reference; and the pair of reverse inclined portions R are respectively provided between the inclined portions K adjacent thereto in the telescopic direction. Specifically, as shown in fig. 4, the stretch pattern DF includes, as the reversely inclined portions R, a first reversely inclined portion R1, a second reversely inclined portion R2, a third reversely inclined portion R3, and a fourth reversely inclined portion R4 …. The pair of reverse inclined portions R symmetrical to the first inclined portion K1 and the third inclined portion K3 are the first reverse inclined portion R1 and the third reverse inclined portion R3. The first reversely inclined portion R1 is located between the first inclined portion K1 and the second inclined portion K2 both adjacent to the first reversely inclined portion R1 in the telescopic direction, and the third reversely inclined portion R3 is located between the third inclined portion K3 and the fourth inclined portion K4.

Therefore, when the diaper 1 changes from the natural state to the extended state and the angle between the inclined portion K and the telescopic direction changes, the angle between the reverse inclined portion R and the telescopic direction also changes. This makes it easier for the wearer or the like to recognize the expansion and contraction of the leg elastic member 15 from the change in the angle between the inclined portion K and the reversely inclined portion R.

Further, more preferred is the following configuration: in the telescopic direction, the first inclined portion K1 is connected with the first reversely inclined portion R1, and the second inclined portion K3 is connected with the third reversely inclined portion R3; and in the left-right direction, the first inclined portion K1 is connected to the third inclined portion K3, and the first reversely inclined portion R1 is connected to the third reversely inclined portion R3. In other words, in a state where the first inclined portion K1, the third inclined portion K3, the first reversely inclined portion R1 and the third reversely inclined portion R3 are connected, a rhombic area U surrounded by the first inclined portion K1, the third inclined portion K3, the first reversely inclined portion R1 and the third reversely inclined portion R3 is provided. The region U is a closed region. As shown in fig. 5A and 5B, when the diaper 1 changes from the natural state to the extended state, the region U is pulled and extended in the stretching direction, thereby increasing the size (area) of the region U. The wearer or the like visually recognizing the dimensional change of the region U can further recognize the expansion and contraction of the leg elastic members 15, and can recognize that the diaper is fitted around the legs of the wearer.

More preferably, a plurality of rhombic areas U formed by being surrounded by the inclined portion K and the reverse inclined portion R are arranged side by side along the expansion and contraction direction. When the diaper 1 is changed from the natural state to the extended state, the sizes of the plurality of diamond-shaped regions U are changed, so that the wearer can more easily visually recognize the extension of the stretch region 50.

In the extended state, the length of the region U in the expansion/contraction direction is preferably longer than the length in the left-right direction. When the diaper 1 is changed from the natural state to the extended state, the length of the stretch pattern DF in the left-right direction is not increased. Therefore, if the length of the region U in the expansion and contraction direction is greater than the length in the left-right direction, the change in the expansion and contraction direction is greater than in the case where the length of the region U in the left-right direction is greater than the length in the expansion and contraction direction. This makes it easier for the wearer and the like to recognize the stretch, and thus more likely to create the impression that the diaper 1 fits the wearer's body.

Further, it is preferable to use a plurality of colors in the stretch pattern DF. For example, assume the following configuration: the first inclined portion K1, the first reverse inclined portion R1, and the fourth inclined portion K4 have the same color (e.g., blue); the second inclined portion K2, the third inclined portion K3, and the third reverse inclined portion R3 have the same color (e.g., red) different from that of the first inclined portion K1, etc. Multiple colors means that "different colors" are used and that these colors are visually distinguishable colors. Specifically, it is sufficient that the plurality of colors have color numbers separated from each other by 3 or more in the Ostwald color circle (Ostwald color circle). The stretch pattern DF formed using a plurality of colors is more likely to attract the attention of the wearer or the like, so that the wearer or the like more easily recognizes the change in the angle between the inclined portion K and the reversely inclined portion R.

As shown in fig. 4 and the like, it is preferable that the diaper 1 has a portion where the stretch pattern DF overlaps with the leg elastic members 15 when viewed from the thickness direction. In the case of employing an elastic thread as the contracting member similarly to the leg elastic members 15, it is more preferable that the number of leg elastic members 15 having a portion overlapping with the stretchability pattern DF is larger than the number of leg elastic members 15 not having a portion overlapping with the stretchability pattern DF. Specifically, seven leg elastic members 15 are arranged in the stretchable region 50 extending along the leg opening LH located on one side in the left-right direction. Among them, five leg elastic members 15 each have a portion overlapping the stretch pattern DF, and two leg elastic members 15 do not have a portion overlapping the stretch pattern DF. In the stretch pattern DF having a portion overlapping with any one of the leg elastic members 15 as viewed in the thickness direction, the extension and contraction of the leg elastic member 15 can make the change in the inclination angle between the inclined portion K and the reversely inclined portion R more noticeable. This makes it easier for the wearer and the like to further recognize the expansion and contraction of the leg elastic members 15, thereby more easily giving the impression that the diaper 1 fits the wearer's body.

Further, as shown in fig. 4, it is preferable that, in the stretchable region 50 extending along the leg opening LH located on one side in the left-right direction, the innermost end of the stretchable pattern DF is located inward in the left-right direction with respect to the innermost leg elastic member 15. This makes it possible to reduce the risk of the stretch pattern DF not being visually recognizable even in the case where the stretch region 50 is deformed by the wearer moving his or her legs during wearing. If the stretch pattern DF is not visually recognizable, the diaper 1 is usually in a state where the leg opening LH penetrates the wearer's leg. Therefore, based on whether the stretch pattern DF can be visually recognized, it can be determined whether the diaper 1 properly fits the leg of the wearer. It is also possible to reduce the risk of leakage of excrement from the leg opening LH caused by the leg opening digging into the leg of the wearer.

As for the leg elastic members 15 as the elastic threads, it is preferable that the force for contracting the leg elastic member 15 positioned on the innermost side in the left-right direction per unit length is larger than the force for contracting the leg elastic member 15 positioned on the outermost side in the left-right direction per unit length. The "force for contracting the leg elastic member 15 per unit length" means "a force for extending the leg elastic member 15 per unit length". For example, the force required to extend the diaper 1 from its natural state until the diaper 1 becomes its extended state is equal to the force required to contract the diaper 1 from its extended state until the diaper 1 becomes its natural state. Increasing the force for contracting the leg elastic members 15 positioned innermost in the left-right direction per unit length allows the region near the crotch of the wearer to more firmly fit the body of the wearer, so that the stretch regions 50 can be made to follow the body of the wearer in such a manner as to remain in contact with the body of the wearer. Also, reducing the force for contracting the leg elastic members 15 positioned on the outermost side in the left-right direction per unit length at the same time makes it possible for the diaper 1 to achieve appropriate fit without strongly tightening the legs of the wearer. This makes it easy to maintain the state in which the stretch regions 50 conform to the shape of the wearer's legs even if the wearer moves his or her legs during wearing, and thus it becomes easier to maintain the state in which the stretch pattern DF can be visually recognized.

Further, as shown in fig. 4 and the like, it is preferable that the stretch patterns DF are respectively located at positions distant from the end portions of the leg opening LH. Specifically, it is preferable that the stretch pattern DF is located a predetermined distance away from the corresponding side end 10e of the absorbent main body 10. In the case where the stretch pattern DF is provided separately from the end portion of the leg opening LH, the stretch pattern DF in the worn state stretches and becomes larger than the stretch pattern DF in the natural state, so that the wearer or the like more easily recognizes the stretching of the leg elastic member 15. In this case, the stretch pattern DF is not provided in the end portion of the leg opening LH to be in direct contact with the wearer's leg, and therefore the impression that the leg elastic member 15 is stretched at the end portion of the leg opening LH is less likely to be visually produced. This readily gives the wearer the impression that: the leg elastic members 15 in the end portions of the leg opening LH are stretched less than the leg elastic members 15 in the region where the stretch pattern DF is provided, and the leg opening LH fits the wearer's leg with contraction.

In the case of a so-called three-piece type disposable diaper including the abdomen-side waist portion 20, the back-side waist portion 30, and the absorbent main body 10, similarly to the diaper 1, it is preferable that the stretch pattern DF is provided so as to span the entire area in the up-down direction (longitudinal direction) of both side ends of the absorbent main body 10, and it is preferable that at least one of the abdomen-side waist portion 20 and the back-side waist portion 30 covers the corresponding upper end portion of the absorbent main body 10 and the stretch pattern DF provided in the corresponding upper end portion of the absorbent main body 10. This makes the following conditions more likely to occur: when the wearer or the like recognizes that the abdominal-side waistline portion 20 or the back-side waistline portion 30 covers a part of the stretch pattern DF, the wearer or the like recognizes that the stretch region 50 is provided to extend up to the region covered with the abdominal-side waistline portion 20 or the back-side waistline portion 30. This makes it easier for the wearer and the like to recognize that the stretch region 50 is provided across the entire area along the leg opening LH, thereby making it easier to give the impression that the diaper is more easily fitted around the wearer's leg.

A method for producing a composite material

A modification of the stretch pattern DF will be explained below. Fig. 6A to 6F are diagrams illustrating modifications of the stretch pattern DF. Fig. 6A to 6F each show the stretch pattern DF in an elongated state, and in the drawings, a virtual line I-I is a virtual line extending along the stretch direction. It should be noted that, in the modification described below, each stretch pattern DF is a figure symmetrical about the virtual line I-I, but is not necessarily symmetrical. For example, in the telescopic direction, the inclined portion K on one side with respect to the virtual line I-I may be above the inclined portion K on the other side.

Similar to fig. 4 and the like, the modification of the stretch pattern DF shown in fig. 6A includes: a first inclined portion Ka1, a second inclined portion Ka2, a third inclined portion Ka3, a fourth inclined portion Ka4.. as inclined portions K; and a first reversely inclined portion Ra1, a second reversely inclined portion Ra2, a third reversely inclined portion Ra3, a fourth reversely inclined portion Ra4. In addition, in the telescopic direction, the first inclined portion Ka1 is connected to the first reversely inclined portion Ra1, and the third inclined portion Ka3 is connected to the third reversely inclined portion Ra 3. In the left-right direction, the first inclined portion Ka1 is connected to the third inclined portion Ka3, and the first reversely inclined portion Ra1 is connected to the third reversely inclined portion Ra 3. Therefore, the closed region Ua is set. As for the difference from the above embodiment, the following configuration is acceptable: the first inclined portion Ka1 and the third inclined portion Ka3 have the same color (e.g., yellow); the second inclined portion Ka2, the fourth inclined portion Ka4, the first reverse inclined portion Ra1, and the second reverse inclined portion Ra2 have the same color (e.g., green) different from the color of the first inclined portion Ka1, and the like. In this case, when the diaper 1 is changed from the natural state to the extended state, if the wearer or the like visually recognizes a change in the inclination angle between the inclined portion K and the reversely inclined portion R and/or a change in the size of the region Ua, the wearer or the like becomes more likely to recognize the expansion and contraction of the stretchable region 50, and the impression that the diaper 1 further fits the wearer's body is more likely to be produced.

The modification of the stretch pattern DF shown in fig. 6B has a pattern of: the stretch pattern DF has only the inclined portion K and no reverse inclined portion R. Specifically, the stretch pattern DF includes: as the inclined portions K, a first inclined portion Kb1, a second inclined portion Kb2, a third inclined portion Kb3, and a fourth inclined portion Kb4. When the diaper 1 is changed from the natural state to the extended state, the inclination angle of the inclined portion K is changed, and the length of the inclined portion K is changed with respect to the lengths of the first inclined portion Kb1 and the third inclined portion Kb3 adjacent in the left-right direction. According to the foregoing configuration, these changes make it easier for the wearer and the like to recognize the stretch of the stretch region 50. As a result, the impression that the diaper 1 fits the body of the wearer is more easily produced.

For the inclined portion K in the extended state, it is preferable that the length in the expansion and contraction direction is larger than the length in the left-right direction. When the diaper 1 changes from the extended state to the natural state, the stretch pattern DF contracts in the stretch direction. However, as shown in fig. 6B, making the stretching direction length h of the first inclined portion Kb1 larger than the left-right direction length w (h > w) makes it easier to maintain the shape of the inclined portion K of the stretch pattern DF in a natural state.

A modification of the stretch pattern DF shown in fig. 6C includes: first inclined portion Kc1, second inclined portion Kc2, third inclined portion Kc3, fourth inclined portion kc4.. as inclined portion K; a first reversely inclined portion Rc1, a second reversely inclined portion Rc2, a third reversely inclined portion Rc3, a fourth reversely inclined portion Rc4.. as the reversely inclined portion R; and the inclined portion K and the reverse inclined portion R each have a curved portion of a curved shape. Such a curved shape more easily creates a soft impression. Therefore, providing the stretch pattern DF having a curved portion in the portion of the stretch region 50 makes it easier to create the impression that the stretch region 50 fits the wearer's skin softly. In addition, the region Uc formed by being surrounded by the first inclined portion Kc1, the third inclined portion Kc3, the first reverse inclined portion Rc1, and the third reverse inclined portion Rc3 may be a region surrounded by a curve. This makes it easier for the wearer or the like to recognize the stretch of the stretch region 50 from the change in the size of the region Uc, thereby more easily creating the impression that the diaper 1 further fits the wearer's body.

The modification of the stretch pattern DF shown in fig. 6D is made by further modifying the modification of the stretch pattern DF shown in fig. 6C. The stretch pattern DF shown in fig. 6D is a pattern having a substantially rectangular shape, and the shape made by coloring the periphery of the portion (region Ud) corresponds to the region Uc of the stretch pattern DF shown in fig. 6C. In other words, the coloring portion is contoured to form a first inclined portion Kd1, a second inclined portion Kd2, a third inclined portion Kd3, a fourth inclined portion Kd4. This allows the wearer or the like to visually recognize the elongation of the outline of the colored portion and the change in the length and inclination angle of each of the inclined portion K and the reversely inclined portion R. The region Ud surrounded by the colored portion is more noticeable, and this makes it easier for the wearer to recognize the stretch of the stretch region 50 based on the dimensional change of the region Ud, thereby more easily creating the impression that the diaper 1 fits the wearer's body.

As in the variation of the stretch pattern DF shown in fig. 6E, such a pattern may be accepted: the inclined portion K and the reverse inclined portion R adjacent to each other in the telescopic direction are separated from each other. Specifically, the stretch pattern DF shown in fig. 6E includes: first inclined portion Ke1, second inclined portion Ke2, third inclined portion Ke3, fourth inclined portion Ke4.. as inclined portion K; a first reversely inclined portion Re1, a second reversely inclined portion Re2, a third reversely inclined portion Re3, a fourth reversely inclined portion Re4.. as the reversely inclined portion R; and a region Ue surrounded by the first inclined portion Ke1, the third inclined portion Ke3, the first reversely inclined portion Re1, and the third reversely inclined portion Re 3. In this case, the first inclined portion Ke1 and the first reversely inclined portion Re1 are adjacent in the telescopic direction, and these portions Ke1 and Re1 are separated from each other. Also, the third inclined portion Ke3 and the third reversely inclined portion Re3 are adjacent in the telescopic direction, and these portions Ke3 and Re3 are separated from each other. In such a stretch pattern DF, the elongation of the stretch region 50 also increases the size of the region Ue, in particular, the stretch-direction length of the region Ue including the length between the first inclined portion Ke1 and the first reversely inclined portion Re1 or the length between the third inclined portion Ke3 and the third reversely inclined portion Re 3. This makes it easier for the wearer or the like to recognize the stretch of the stretch region 50, thereby more easily giving the impression that the diaper 1 fits the wearer's body.

Further, as in the modification of the stretch pattern DF shown in fig. 6E, such a pattern may be accepted: the inclined portions adjacent in the left-right direction are separated from each other. Specifically, the stretch pattern DF shown in fig. 6F includes: a first inclined portion Kf1, a second inclined portion Kf2, a third inclined portion Kf3, a fourth inclined portion kf4.. as inclined portions K; as the reversely inclined portions R, a first reversely inclined portion Rf1, a second reversely inclined portion Rf2, a third reversely inclined portion Rf3, a fourth reversely inclined portion Rf 4.; and a region Uf surrounded by the first inclined portion Kf1, the third inclined portion Kf3, the first reversely inclined portion Rf1, and the third reversely inclined portion Rf 3. In this case, the first inclined portion Kf1 and the third inclined portion Kf3 are adjacent in the left-right direction, and these portions are separated from each other. In such a stretch pattern DF, the extension of the stretch region 50 may also change the size of the region Uf. This makes it easier for the wearer or the like to recognize the stretch of the stretch region 50, thereby more easily giving the impression that the diaper 1 fits the wearer's body.

Other embodiments

Although the embodiments of the present disclosure have been described above, the above embodiments of the present disclosure are only for the purpose of facilitating understanding of the present disclosure and should not be construed as limiting the present disclosure in any way. The present disclosure may make various changes or modifications without departing from the gist thereof and covers equivalents thereof.

In the above embodiment, the first inclined portion K1 and the second inclined portion arranged along the telescopic direction have the same shape, and similarly, the third inclined portion K3 and the fourth inclined portion K4 arranged along the telescopic direction have the same shape. However, the present invention is not limited thereto. These inclined portions may each have a different shape. It should be noted that, in the case where the first inclined portion K1 and the second inclined portion have the same shape and the third inclined portion K3 and the fourth inclined portion K4 have the same shape, it becomes easier to further recognize the change in the angle with respect to the left-right direction of the inclined portion K due to the elongation in the telescopic direction.

In the above embodiment, the region where the leg elastic member 15 is provided is described as the stretchable region 50. However, the present invention is not limited thereto. For example, the following configuration is also possible: the region where the linear

elastic members

23, 33 of the abdomen-side waistline portion 20 and/or the back-side waistline portion 30 are provided and the region where the stretchable sheet 24 is provided are defined as stretchable regions; and a center stretch pattern DF is provided in the stretch region of the abdomen-side waistline portion 20 and/or the stretch region of the back-side waistline portion 30. In this case, the wearer or the like can more easily recognize that the abdomen-side waistline portion 20 and/or the back-side waistline portion 30 including the stretch pattern DF fits the waistline of the wearer.

In addition, although the diaper in which the abdomen-side waist portion 20 and the back-side waist portion 30 are separate members is described as an example in the above-described embodiment, a configuration is also possible in which a crotch portion is provided between the abdomen-side waist portion 20 and the back-side waist portion 30 and the abdomen-side waist portion 20 and the back-side waist portion 30 are a single continuous member.

Description of the reference numerals

1 diaper (pants-type disposable diaper, absorbent article), 2-bonded region, 10 absorbent body, 10 e-side end, 11 absorber, 11A absorbent core, 11B core wrap, 12 front sheet, 13 back sheet, 14 outer sheet, 15 leg elastic member (stretch member), 16 side sheet, 20 abdomen waist portion, 21 skin side sheet, 22 non-skin side sheet, 23 linear elastic member, 24 stretch sheet, 30 back waist portion, 31 skin side sheet, 32 non-skin side sheet, 33 linear elastic member, 50 stretch region (leg gather), waist BH opening, LH leg opening, D pattern portion, DF stretch pattern, N non-stretch region, K slant portion, R reverse slant portion

Claims

1. An absorbent article, characterized in that the absorbent article comprises:

a telescopic region in which a telescopic member is disposed;

opening the waist;

a pair of leg openings; and

a pattern part in which a stretchable pattern is disposed,

the stretch pattern is visually recognizable from the non-skin side of the absorbent article,

the stretchable pattern has a portion overlapping with the stretchable region,

the extensible pattern in the extended state has a plurality of inclined portions,

the plurality of inclined portions are inclined with respect to a telescopic direction of the telescopic member,

the plurality of inclined portions are arranged side by side along the telescopic direction,

the plurality of inclined portions are arranged in pairs with reference to a specific straight line extending in the telescopic direction,

the stretchable pattern is formed using a plurality of colors.

2. The absorbent article according to claim 1,

the telescoping region is arranged to extend along the leg opening.

3. The absorbent article according to claim 2,

in the state of being extended, the elastic element is in a non-elastic state,

the stretchable pattern has a portion overlapping with the stretchable member when viewed from the thickness direction.

4. The absorbent article according to claim 3,

the said telescopic member is an elastic thread,

a plurality of elastic threads are arranged along the leg openings, and

in the state of the said elongation, the said elastic material,

the number of elastic threads having a portion overlapping with the stretchable pattern when viewed from the thickness direction is larger than the number of elastic threads having no portion overlapping with the stretchable pattern when viewed from the thickness direction.

5. The absorbent article according to claim 3,

the absorbent article has a vertical direction, a horizontal direction, and a front-rear direction,

the said telescopic member is an elastic thread,

in the state of the said elongation, the said elastic material,

a plurality of elastic threads are arranged along the leg openings, and

an innermost end of the stretchable pattern is positioned inward in the left-right direction with respect to the elastic thread disposed innermost.

6. The absorbent article according to claim 3,

the said telescopic member is an elastic thread,

a plurality of elastic threads are arranged along the leg openings, and

the force for contracting the elastic thread located on the innermost side in the left-right direction per unit length is larger than the force for contracting the elastic thread located on the outermost side in the left-right direction per unit length.

7. An absorbent article, characterized in that the absorbent article comprises:

a telescopic region in which a telescopic member is disposed;

opening the waist;

a pair of leg openings; and

a pattern part in which a stretchable pattern is disposed,

the stretchable pattern has a portion overlapping with the stretchable region,

the stretch zone is arranged to extend along the leg opening,

the stretchable pattern has a portion overlapping with the stretchable member when viewed from a thickness direction,

the stretch pattern is distal from the end of the leg opening.

8. An absorbent article, characterized in that the absorbent article comprises:

a telescopic region in which a telescopic member is disposed;

opening the waist;

a pair of leg openings; and

a pattern part in which a stretchable pattern is disposed,

the stretchable pattern has a portion overlapping with the stretchable region,

the stretch zone is arranged to extend along the leg opening,

the absorbent article further includes an absorbent main body and a pair of waist portions,

both side ends of the absorbent main body are the stretchable regions extending along the leg openings, the stretchable pattern is provided across the entire region in the up-down direction of both side ends of the absorbent main body, and

the stretchable pattern provided in the upper end portion of the absorbent main body and the upper end portion of the absorbent main body is covered with the waistline portion.

9. The absorbent article according to any one of claims 1, 7 and 8,

in the state of being extended, the elastic element is in a non-elastic state,

the length of the inclined portion in the telescopic direction is larger than the length of the inclined portion in an orthogonal direction orthogonal to the telescopic direction.

10. The absorbent article according to any one of claims 1, 7 and 8,

in the state of being extended, the elastic element is in a non-elastic state,

the stretchable pattern includes a pair of reversely inclined portions symmetrical to the inclined portions with the specific straight line as a reference in an orthogonal direction,

the orthogonal direction is a direction orthogonal to the expansion and contraction direction,

each of the reversely inclined portions is provided between the inclined portions adjacent to the reversely inclined portion in the telescopic direction.

11. The absorbent article of claim 10,

in the state of the said elongation, the said elastic material,

the inclined portion and the reverse inclined portion adjacent to each other in the telescopic direction are separated from each other in the telescopic direction.

12. The absorbent article of claim 10,

in the state of the said elongation, the said elastic material,

the inclined portions adjacent to each other in the orthogonal direction are separated from each other in the orthogonal direction.

13. The absorbent article of claim 10,

in the state of the said elongation, the said elastic material,

in the direction of the said extension and retraction,

the inclined portion and the reverse inclined portion located on one side with respect to the specific straight line in the orthogonal direction are connected, and

the inclined portion and the reverse inclined portion located on the other side with respect to the specific straight line in the orthogonal direction are connected,

in the orthogonal direction, the first and second beams are parallel,

the inclined portions adjacent in the orthogonal direction are connected, and

the reverse inclined portions adjacent in the orthogonal direction are connected.

14. The absorbent article according to any one of claims 1, 7 and 8,

in the state of being extended, the elastic element is in a non-elastic state,

the inclined portion has a curved portion.

15. The absorbent article according to any one of claims 1, 7 and 8,

the absorbent article further includes:

a non-telescopic region in which the telescopic member is not provided; and

a non-pattern portion in which the stretchable pattern is not disposed and which has a portion overlapping with the non-stretchable region.

16. The absorbent article according to any one of claims 1, 7 and 8,

the expansion region is arranged to extend along the leg opening, and

in the state of being extended, the elastic element is in a non-elastic state,

the stretchable pattern is bilaterally symmetric with respect to the specific straight line,

each of the reversely inclined portions is provided between the inclined portions adjacent to the reversely inclined portions in the telescopic direction, and

a plurality of rhombic areas surrounded by the paired inclined portions and the paired reverse inclined portions are provided along the telescopic direction.