Underpants-type absorbent article and kit of underpants-type absorbent article

Abstract

The invention provides an underpants-type absorbent article and a kit of the underpants-type absorbent article. When worn, it is easy for a wearer and the like to recognize that it is desirable that the underwear-type absorbent article is worn in different steps on one side and the other side in the left-right direction of the underwear-type absorbent article. An underpants-type absorbent article (1) is provided with: an annular waist part (20); a one-side engagement member (30a) provided with a one-side engagement part; and an other-side engagement member (30b) having an other-side engagement part, the waist part having a pair of separation parts for separating the waist part into a front waist part and a rear waist part, the one-side engagement member being fixed to the waist part by the one-side fixing part, the other-side engagement member being fixed to the waist part by the other-side fixing part, and the other-side engagement member being fixed to the waist part by the other-side fixing part in an extended state. The length in the left-right direction from the other end of the one-side engagement member to the other end of the one-side fixing portion is different from the length from the one end of the other-side engagement member to the one end of the other-side fixing portion.

Description

Technical Field

[0001] The present invention relates to a pant-type absorbent article and a kit of pant-type absorbent articles. Background Art

[0002] There are known such panty-type absorbent articles that can be used as belt-type (expanded) absorbent articles by partially separating the waist member of the panty-type absorbent article. For example, Patent Document 1 discloses such a panty-type disposable diaper that has a pair of break guide lines provided on the ventral side of the outer body, and can be opened in a left-right split manner by cutting the outer body along the break guide lines. This panty-type disposable diaper is a dual-purpose disposable diaper that can also be used as a belt-type diaper using a hook and loop fastener that is pulled out after opening.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2010-131197 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] When wearing a disposable diaper of the type of underwear as in Patent Document 1 in a belt-type state after the outer body is cut by a pair of fracture guide lines, it is ideal that, first, in order to make the wearer's leg on one side pass through the leg opening, the front body openable part on one side in the left-right direction is gently grasped, and the hook and loop fastener of the front body openable part is fixed to the front body non-opening part. Afterwards, in order to make the wearer's other leg on one side pass through the leg opening, the front body openable part on the other side in the left-right direction is pulled, and the hook and loop fastener of the front body openable part is fixed to the front body non-opening part in a manner aligned with the wearer's waist. In other words, when wearing in a belt-type state, it is ideal to wear it in different steps on both sides in the left-right direction.

[0008] However, the disposable diaper of Patent Document 1 has a problem in that, since it has a symmetrical shape in the left-right direction in the underpants-type state, it is difficult for the wearer to recognize that one side and the other side in the left-right direction are worn in different steps when it is set to a belt-type state.

[0009] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a pant-type absorbent article which can easily make the wearer recognize that it is ideal to wear the pant-type absorbent article in different steps on one side and the other side in the left-right direction when wearing it.

[0010] Solutions for solving problems

[0011] The main technical solution for achieving the above-mentioned purpose is an underpants-type absorbent article, which has mutually intersecting up-down directions, left-right directions and front-back directions, and has: an annular waist portion; a one-side snap-in component, which is arranged on one side in the left-right direction and has a one-side snap-in component that can be detachably snapped to the waist portion; and an other-side snap-in component, which is arranged on the other side in the left-right direction and has a other-side snap-in component that can be detachably snapped to the waist portion, the waist portion having a pair of separation portions for separating the annular waist portion into a front waist portion and a rear waist portion, characterized in that the one-side snap-in component is fixed by one side The waist portion is fixed to the waist portion, and the other side engaging member is fixed to the waist portion by the other side fixing portion. In the one side engaging member, the one side engaging portion is located at a position closer to the other side in the left-right direction than the one side fixing portion, and in the other side engaging member, the other side engaging portion is located at a position closer to one side in the left-right direction than the other side fixing portion. In the extended state, the length in the left-right direction from the end of the other side of the one side engaging member to the end of the other side of the one side fixing portion is different from the length from the end of one side of the other side engaging member to the end of one side of the other side fixing portion.

[0012] Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[0013] Effects of the Invention

[0014] According to the present invention, it is possible to provide a pull-on absorbent article which can easily make the wearer recognize that it is desirable to wear the pull-on absorbent article in different steps on one side and the other side in the left-right direction when the pull-on absorbent article is worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic perspective view of the sanitary napkin 1.

[0016] Figure 2 This is a schematic plan view of the sanitary napkin 1 in the unfolded and stretched state as viewed from the skin side in the thickness direction.

[0017] Figure 3 yes Figure 2 AA cross-sectional view of .

[0018] Figure 4A and Figure 4B This is a schematic cross-sectional view of the sanitary napkin 1 as viewed from the waist opening 1a side.

[0019] Figure 5 It is a developed plan view of the sanitary napkin 1 in a state where the front waistline portion 20fA is separated from the rear waistline portion 20bA along the dividing line 26 .

[0020] Figure 6A to Figure 6C This is a diagram for explaining an example of a method for a wearer to wear the sanitary napkin 1.

[0021] FIG. 7A to FIG. 7D This is a diagram for explaining an example of a method for a wearer to wear the sanitary napkin 1.

[0022] Fig. 8A It is a schematic perspective view of the package 100 . Figure 8B This is a diagram for explaining the sanitary napkin 1 in an initial state.

[0023] Fig. 9 This is a plan view of the sanitary napkin 1 in an initial state as viewed from the front side.

[0024] Fig.10 It means to make Fig. 9 The diagram shows the sanitary napkin 1 in an extended state after extension.

[0025] Fig.11 2 is a diagram showing a wearing method mark 80.

[0026] Fig.12 It is a figure which shows the extended state of the sanitary napkin 2 which concerns on 2nd Embodiment.

[0027] Fig.13 It is a diagram showing a modification example of the present embodiment.

[0028] Fig.14 It is a diagram showing a modification example of the present embodiment.

[0029] Description of Reference Numerals

[0030] 1, 2, 3, 4, sanitary napkin (underwear type absorbent article); 1a, waist opening (waist opening); 1b, leg opening (leg opening); 2a, waist opening (waist opening); 2b, leg opening (leg opening); 10, absorbent body; 11, absorbent core; 12, top sheet; 13, bottom sheet; 13a, liquid-impermeable sheet; 13b, hydrophobic sheet; 14, leak-proof wall; 14i, leak-proof wall elastic member (side elastic member); 15, absorbent body elastic member; 20, waist; 20f, front side member; 20b, back side member; 20fA, front waist; 20bA, back waist; 20EA, front stretch area; 20NA, non-stretch area; 21, non-skin side sheet; 22, skin side sheet; 23, skin side sheet; 24f , front waist elastic member; 24b, rear waist elastic member; 25, leg elastic member; 26, dividing line (separation part); 26a, one side dividing line; 26b, other side dividing line; 30, wing (engaging member); 30a, one side wing (one side engaging member, engaging member); 30b, other side wing (other side engaging member, engaging member); 31, base sheet; 32, engaging part; 32a, one side engaging part; 32b, other side engaging part; 35, fixing part; 35a, one side fixing part; 35b, other side fixing part; 40, side joint part (joint part); 80, wearing method mark; 100, packaging body (kit of underwear type absorbent article); 101, storage part; 101A, front; 101B, back; D, pattern; E, compression area. DETAILED DESCRIPTION

[0031] At least the following matters will become clear from the description of this specification and the drawings.

[0032] (Method 1)

[0033] A panty-type absorbent article, which has mutually intersecting up-down directions, left-right directions and front-back directions, and has: an annular waist portion; a one-side snap-in component, which is arranged on one side in the left-right direction and has a one-side snap-in component that can be detachably snap-into the waist portion; and an other-side snap-in component, which is arranged on the other side in the left-right direction and has a other-side snap-in component that can be detachably snap-into the waist portion, the waist portion having a pair of separation portions for separating the annular waist portion into a front waist portion and a rear waist portion, characterized in that the one-side snap-in component is fixed to the waist portion by a one-side fixing portion , the other side engaging member is fixed to the waist portion by the other side fixing portion, in the one side engaging member, the one side engaging portion is located at a position closer to the other side in the left-right direction than the one side fixing portion, and in the other side engaging member, the other side engaging portion is located at a position closer to one side in the left-right direction than the other side fixing portion, and in the extended state, the length in the left-right direction from the end of the other side of the one side engaging member to the end of the other side of the one side fixing portion is different from the length from the end of one side of the other side engaging member to the end of one side of the other side fixing portion.

[0034] According to method 1, since the underwear-type absorbent article in the stretched state is asymmetrically shaped relative to the center in the left-right direction, it is easy for the wearer to realize that it is ideal to wear the underwear-type absorbent article in different steps on one side and the other side in the left-right direction when wearing it.

[0035] (Method 2)

[0036] A pant-type absorbent article, which has mutually intersecting up-down directions, left-right directions and front-back directions, and comprises: an annular waist portion; a one-side snap-in component, which is arranged on one side in the left-right direction and has a one-side snap-in component that can be detachably snapped to the waist portion; and another-side snap-in component, which is arranged on the other side in the left-right direction and has the other-side snap-in component that can be detachably snapped to the waist portion, the waist portion having a pair of separation portions for separating the annular waist portion into a front waist portion and a rear waist portion, characterized in that the front waist portion has a front stretchable area that can be stretched and retracted along the left-right direction, and the one-side snap-in component is fixed to the waist portion by a one-side fixing portion. The waist portion, the other side engaging member is fixed to the waist portion by the other side fixing portion, in the one side engaging member, the one side engaging portion is located at a position closer to the other side in the left-right direction than the one side fixing portion, and in the other side engaging member, the other side engaging portion is located at a position closer to one side in the left-right direction than the other side fixing portion, and in the extended state, the distance from the center in the left-right direction of the underpants-type absorbent article to the end of the front stretch region in the left-right direction closest to one side is different from the distance from the center in the left-right direction of the underpants-type absorbent article to the end of the front stretch region in the left-right direction closest to the other side.

[0037] According to method 2, since the underwear-type absorbent article in the stretched state is asymmetrically shaped relative to the center in the left-right direction, it is easy for the wearer to realize that it is ideal to wear the underwear-type absorbent article in different steps on one side and the other side in the left-right direction when wearing it.

[0038] (Method 3)

[0039] According to the underwear-type absorbent article described in method 1 or 2, wherein, in the extended state, the length in the left-right direction from the center of the left-right direction of the one side snap-fitting portion to the end of the other side of the one side fixing portion is different from the length from the center of the left-right direction of the other side snap-fitting portion to the end of one side of the other side fixing portion.

[0040] According to method 3, it is easy for the wearer to recognize that the underwear-type absorbent article is asymmetrically shaped relative to the center in the left-right direction, thereby making it easy for the wearer to recognize that it is ideal to wear the underwear-type absorbent article in different steps on one side and the other side in the left-right direction.

[0041] (Method 4)

[0042] According to any one of methods 1 to 3, the underpants-type absorbent article is characterized in that the front waist portion has a front stretchable region that can be stretched and retracted in the left-right direction, and the pair of separation portions has a one side separation portion provided on one side in the left-right direction and an other side separation portion provided on the other side in the left-right direction, and in the extended state, the length in the left-right direction from the end of the front stretchable region closest to one side in the left-right direction to the one side separation portion is different from the length from the end of the front stretchable region closest to the other side in the left-right direction to the other side separation portion.

[0043] According to method 4, when the underwear-type absorbent article is separated into the front waist portion and the rear waist portion, it is easy for the wearer to recognize that the underwear-type absorbent article is an asymmetrical shape relative to the center in the left-right direction, thereby making it easy for the wearer to recognize that it is ideal to wear the underwear-type absorbent article in different steps on one side and the other side in the left-right direction.

[0044] (Method 5)

[0045] An underpants-type absorbent article according to any one of methods 1 to 4, wherein the underpants-type absorbent article has an absorbent main body having an absorbent core, the pair of separation portions having a one side separation portion provided on one side in the left-right direction and an other side separation portion provided on the other side in the left-right direction, and in an extended state, a length in the left-right direction from the center of the absorbent main body in the left-right direction to the one side separation portion and a length from the center of the absorbent main body in the left-right direction to the other side separation portion are different.

[0046] According to method 5, when worn, a pair of separation portions are arranged at asymmetric positions relative to the center of the left-right direction of the absorbent body arranged in the center part of the wearer's body in the left-right direction. Therefore, when separated into the front waist portion and the rear waist portion of the underwear-type absorbent article, it is easy for the wearer to recognize that the underwear-type absorbent article is asymmetrical in shape relative to the center in the left-right direction, thereby making it easy for the wearer to recognize that it is ideal to wear the underwear-type absorbent article in different steps on one side and the other side in the left-right direction.

[0047] (Method 6)

[0048] An underpants-type absorbent article according to any one of methods 1 to 5, wherein the annular waist portion has a pair of joints that respectively join the two side ends of the front member and the rear member, the front member constitutes at least a part of the front waist portion, and the rear member constitutes at least a part of the rear waist portion, and in the extended state, the length in the left-right direction from the end of one side of the front member to the end of one side of the one side fixing portion is different from the length from the end of the other side of the front member to the end of the other side of the other side fixing portion.

[0049] According to method 6, it is easy for the wearer to recognize that the underwear-type absorbent article is asymmetrically shaped relative to the center in the left-right direction, so that when wearing it, it is easy for the wearer to recognize that it is ideal to wear it in different steps on one side and the other side in the left-right direction of the underwear-type absorbent article.

[0050] (Method 7)

[0051] The pull-on absorbent article according to any one of aspects 1 to 6, wherein in the stretched state, the area of ​​the one-side engaging member is different from the area of ​​the other-side engaging member.

[0052] According to method 7, by visually identifying the different sizes of the snap-fitting components on one side and the snap-fitting components on the other side, it is easy for the wearer to recognize that the underwear-type absorbent article is an asymmetrical shape relative to the center in the left-right direction, thereby making it easy for the wearer to recognize that it is ideal to wear the underwear-type absorbent article in different steps on one side and the other side in the left-right direction when wearing it.

[0053] (Method 8)

[0054] The pull-on absorbent article according to any one of aspects 1 to 7, wherein the shape of the one-side engaging member is different from the shape of the other-side engaging member.

[0055] According to method 8, by visually identifying the different shapes of the snap-fitting components on one side and the snap-fitting components on the other side, it is easy for the wearer to recognize that the underwear-type absorbent article is an asymmetrical shape relative to the center in the left-right direction, thereby making it easy for the wearer to recognize that it is ideal to wear the underwear-type absorbent article in different steps on one side and the other side in the left-right direction when wearing the article.

[0056] (Method 9)

[0057] The pull-on absorbent article according to any one of aspects 1 to 8, wherein the one side engaging portion includes a side end along the up-down direction, and in the extended state, the side end is inclined with respect to the up-down direction.

[0058] According to method 9, it is easy for the wearer to recognize that the underwear-type absorbent article is asymmetrically shaped relative to the center in the left-right direction, so that when wearing it, it is easy for the wearer to recognize that it is ideal to wear it in different steps on one side and the other side in the left-right direction of the underwear-type absorbent article.

[0059] (Method 10)

[0060] The pull-on absorbent article according to any one of aspects 1 to 9, wherein in the extended state, a lower end of the one engaging portion and a lower end of the other engaging portion are provided at different positions in the vertical direction.

[0061] According to method 10, it is easy for the wearer to recognize that the underwear-type absorbent article is asymmetrically shaped relative to the center in the left-right direction, so that when wearing it, it is easy for the wearer to recognize that it is ideal to wear it in different steps on one side and the other side in the left-right direction of the underwear-type absorbent article.

[0062] (Method 11)

[0063] The pull-on absorbent article according to any one of aspects 1 to 10, wherein a pattern is provided on the one side engaging member.

[0064] According to aspect 11, the wearer or the like can easily recognize the one-side engaging member, thereby reducing the trouble of finding the one-side engaging member and facilitating the correct wearing of the pull-on absorbent article.

[0065] (Method 12)

[0066] According to any one of methods 1 to 11, the front waist portion has a front stretch region that can stretch in the left-right direction, and in the extended state, when viewed in the front-to-back direction, the one side snap-fitting portion has a portion overlapping with the front stretch region, while the other side snap-fitting portion does not have a portion overlapping with the front stretch region.

[0067] According to method 12, it is easy for the wearer to recognize that the underwear-type absorbent article is asymmetrically shaped relative to the center in the left-right direction, so that when wearing it, it is easy for the wearer to recognize that it is ideal to wear it in different steps on one side and the other side in the left-right direction of the underwear-type absorbent article.

[0068] (Method 13)

[0069] According to any one of methods 1 to 12, the pair of separation portions comprises a one side separation portion provided on one side in the left-right direction and an other side separation portion provided on the other side in the left-right direction, and in an extended state, when viewed along the front-to-back direction, the one side snap-fitting portion does not overlap with the one side separation portion, while the other side snap-fitting portion has a portion overlapping with the other side separation portion.

[0070] According to method 13, it is easy for the wearer to recognize that the underwear-type absorbent article is asymmetrically shaped relative to the center in the left-right direction, so that when wearing it, it is easy for the wearer to recognize that it is ideal to wear it in different steps on one side and the other side in the left-right direction of the underwear-type absorbent article.

[0071] (Method 14)

[0072] A kit of underwear-type absorbent articles, characterized in that it comprises an underwear-type absorbent article as described in any one of methods 1 to 13 and an indication of a method of wearing the underwear-type absorbent article, wherein the underwear-type absorbent article has a waist opening and a pair of leg openings, and the following wearing method is indicated in the indication: a state is set in which one leg of the wearer is passed through the leg opening on one side in the left-right direction, and then the engaging portion on the other side is engaged with the waist portion, thereby connecting the front waist portion and the rear waist portion separated by the separation portion, thereby setting the state in which the other leg of the wearer is passed through the leg opening on the other side in the left-right direction.

[0073] According to method 14, when wearing an underpants-type absorbent article having an asymmetrical shape relative to the center in the left-right direction, it is easy to promote the wearer to wear the article based on the following wearing method: first, one leg of the wearer is placed in a state where it passes through the leg opening on one side in the left-right direction of the underpants-type absorbent article, and then the other leg of the wearer is placed in a state where it passes through the leg opening on the other side in the left-right direction.

[0074] (Method 15)

[0075] According to the kit of an underpants-type absorbent article described in mode 14, wherein, in the underpants-type absorbent article, the front waist portion has a front stretchable region that can stretch in the left-right direction, and the distance from the center of the underpants-type absorbent article in the left-right direction to the end of the front stretchable region closest to one side in the left-right direction is longer than the distance from the center of the underpants-type absorbent article in the left-right direction to the end of the front stretchable region closest to the other side in the left-right direction.

[0076] According to mode 15, it is easy to promote the wearer to wear in different steps on one side and the other side in the left-right direction. In addition, when wearing a panty-type absorbent article in which the front waist portion on one side in the left-right direction is easier to stretch than the front waist portion on the other side in the left-right direction, by providing a mark indicating the wearing method starting from one side in the left-right direction, the wearer can first use a small force to set the state in which one leg of the wearer passes through the leg opening on one side in the left-right direction, and then, on the other side in the left-right direction, the front waist portion that is not easy to stretch is pulled while the other side engaging portion is engaged with the waist portion, so that it is easy to engage the waist portion at an appropriate position.

[0077] ===First Embodiment===

[0078] As an example of the pull-on absorbent article of the first embodiment, a pull-on (pants-type) sanitary napkin 1 (hereinafter also referred to as sanitary napkin 1) will be described. The pull-on absorbent article also includes a pull-on diaper, a pull-on absorbent pad, and the like.

[0079] <<<Basic structure of sanitary napkin 1>>>

[0080] Figure 1 It is a schematic perspective view of the sanitary napkin 1. Figure 2 This is a schematic plan view of the sanitary napkin 1 in the unfolded and stretched state as viewed from the skin side in the thickness direction. Figure 3 yes Figure 2 AA cross-sectional view of .

[0081] like Figure 1 As shown in FIG. 1 , the sanitary napkin 1 has a "up-down direction", "left-right direction" and "front-back direction" that intersect (orthogonally) each other. Figure 3 As shown, the sanitary napkin 1 has a "thickness direction" which is the direction in which the components are stacked. The side in the up-down direction that becomes the upper side of the wearer when the wearer wears the sanitary napkin 1 is set as the "waist side" or "upper side", and the side that becomes the lower side of the wearer is set as the "crotch side" or "lower side". In addition, the side in the front-to-back direction that becomes the abdominal side of the wearer when worn is set as the "front side", and the side that becomes the back side of the wearer is set as the "back side". In addition, the side in the thickness direction that contacts the wearer's skin when the wearer wears the sanitary napkin 1 is set as the "skin side", and the opposite side is set as the "non-skin side". Furthermore, in the present embodiment, the left side of the wearer in the wearing state in the left-right direction is set as the "side" ( Figure 1 On the right side, Figure 2 ), and the right side of the wearer in the wearing state is set as the "other side" ( Figure 1 On the left side, Figure 2on the right side of the image). Figure 2 The center line CC shown in the figure indicates the center of the sanitary napkin 1 in the left-right direction, and the center line CL indicates the center of the sanitary napkin 1 in the longitudinal direction in the unfolded state.

[0082] The sanitary napkin 1 of this embodiment comprises: an absorbent body 10 that absorbs excretions such as menstrual blood; an annular waist portion 20 that is arranged to overlap with the absorbent body 10 in the front-back direction (in this embodiment, it is arranged on the non-skin side of the absorbent body 10); and a pair of wings 30 that are provided on both sides of the waist portion 20 in the left-right direction. The waist portion 20 comprises a front member 20f and a rear member 20b. The front member 20f constitutes at least a part of a front waist portion 20fA described later, and the rear member 20b constitutes at least a part of a rear waist portion 20bA described later.

[0083] Figure 2 The unfolded state of the sanitary napkin 1 shown in FIG. 1 is a state in which a pair of side joints 40 provided on both sides of the sanitary napkin 1 in the left-right direction are separated, and the sanitary napkin 1 is opened and unfolded in a plane. Figure 2 In the unfolded state shown, the front member 20f and the rear member 20b are folded in the front-to-back direction at the central position CL (folded portion F) in the up-down direction, and the two side portions in the left-to-right direction of each of the front member 20f and the rear member 20b are joined by a pair of side joints (joints) 40 to form an underpants type. As a joining method of the side joints 40, known joining methods such as heat welding and ultrasonic welding can be cited. The side joints 40 include a side joint 40a located on one side in the left-to-right direction and another side joint 40b located on the other side in the left-to-right direction. In the underpants type sanitary napkin 1 ( Figure 1 ), the waist portion 20 (the front member 20f and the rear member 20b) are connected in a ring shape to form a waist opening 1a and a pair of leg openings 1b.

[0084] The stretched state of the sanitary napkin 1 refers to a state in which the elastic components of the sanitary napkin 1 are stretched to such an extent that wrinkles of the sanitary napkin 1 cannot be visually recognized. Specifically, it refers to a state in which the elastic components of the sanitary napkin 1 are stretched to such an extent that the dimensions of each component constituting the sanitary napkin 1 are consistent with or close to the dimensions of the component alone (i.e., the dimensions in a state in which the elastic characteristics of the elastic components are not reflected).

[0085] (Absorbent body 10)

[0086] like Figure 2 As shown in FIG. 1 , the absorbent body 10 is a member having a rectangular shape when viewed from above with its longitudinal direction along the vertical direction of the sanitary napkin 1. Figure 3As shown in the figure, the absorbent body 10 has an absorbent core 11, a top sheet 12 disposed at a position closer to the skin side than the absorbent core 11, and a back sheet 13 disposed at a position closer to the non-skin side than the absorbent core 11. However, the absorbent body 10 may also have sheet members other than these. For example, a second sheet (not shown) may also be provided between the top sheet 12 and the absorbent core 11 in the thickness direction.

[0087] The absorbent core 11 is a member for absorbing and keeping liquids such as menstrual blood, and is formed by liquid absorbent fibers such as pulp fibers mixed with superabsorbent polymers (SAP). In addition, the outer peripheral surface of the absorbent core 11 may be covered by liquid-permeable sheet members (core wrapping sheets) such as tissue paper and nonwoven fabrics.

[0088] The top sheet 12 is a liquid-permeable sheet member that comes into contact with the wearer's skin when worn, and is formed of, for example, a hydrophilic air-through nonwoven fabric, a spunbonded nonwoven fabric, or the like.

[0089] The backsheet 13 is formed of a double-layer structure, and includes: a liquid-impermeable sheet 13a for preventing liquid such as menstrual blood absorbed by the absorbent core 11 from leaking to the outside; and a hydrophobic sheet 13b, which is arranged on the non-skin side of the liquid-impermeable sheet 13a. As the liquid-impermeable sheet 13a, for example, a resin film is used, and as the hydrophobic sheet 13b, for example, a nonwoven fabric with softness is used. However, the hydrophobic sheet 13b does not need to be provided, and the backsheet 13 may be composed of only the liquid-impermeable sheet 13a.

[0090] In addition, the absorbent body 10 has a leak-proof wall portion 14 that can stand up toward the skin side on both sides in the left-right direction. For example, the two sides in the left-right direction of the hydrophobic sheet 13b are folded back inward in the left-right direction to be located on the skin side of the top sheet 12, and a leak-proof wall elastic member 141 (such as an elastic cord) that stretches in the length direction is provided at the folded-back position, thereby forming the leak-proof wall portion 14. The leak-proof wall portion 14 can be used to suppress the side leakage of the excrement. However, the leak-proof wall portion 14 may not be provided in the absorbent body 10.

[0091] In addition, if Figure 2 As shown in FIG. 1 , the absorbent body 10 has a plurality of absorbent elastic members 15 that stretch in the longitudinal direction thereof. The absorbent elastic members 15 are, for example, made of elastic threads and are arranged in a stretched state in the longitudinal direction on the non-skin side (at the non-skin side) of the liquid-impermeable sheet 13a of the absorbent core 11. Figure 3 In the sanitary napkin 1 of this embodiment, five absorbent elastic members 15 are provided at predetermined intervals in the width direction. The absorbent elastic members 15 make it easy for the absorbent body 10 to fit closely to the crotch (vaginal opening) of the wearer, thereby preventing leakage of excrement.

[0092] (waist part 20)

[0093] The waist portion 20 is an outer body composed of a plurality of sheet members, and includes at least a non-skin side sheet 21 and skin side sheets 22, 23 (see Figure 3 In the following description, the sanitary napkin 1 in the unfolded state ( Figure 2 ) is divided into two equal parts at the central position CL in the vertical direction, the portion located at the front side of the central position CL and overlapping with the side joint 40 in the vertical direction is called "front side member 20f", and the portion located below (on the crotch side) than the front side member 20f is called "front side extension 20fe". Similarly, the portion located at the rear side of the central position CL and overlapping with the side joint 40 in the vertical direction is called "rear side member 20b", and the portion located below the rear side member 20b is called "rear side extension 20be".

[0094] The non-skin side sheet 21 is a non-stretchable sheet member disposed at the non-skin side of the sanitary napkin 1 and is formed of, for example, a spunbonded nonwoven fabric, an SMS nonwoven fabric, or the like. Figure 2 As shown in FIG. 1 , the non-skin side sheet 21 of the present embodiment has a shape in which the center portion in the up-down direction is narrowed toward the inside in the left-right direction.

[0095] The skin side sheets 22 and 23 are non-stretchable sheet members respectively laminated on the skin side of the non-skin side sheet 21 on the front and rear sides of the waist part 20. Like the non-skin side sheet 21, the skin side sheets 22 and 23 are formed of, for example, spunbonded nonwoven fabric, SMS nonwoven fabric, etc.

[0096] A plurality of front waist elastic members 24f such as elastic threads that stretch in the left-right direction are disposed at intervals in the up-down direction between the non-skin side sheet 21 and the skin side sheet 22. The front waist elastic members 24f provide stretchability to the front member 20f.

[0097] A plurality of rear waist elastic members 24b such as elastic threads that stretch in the left-right direction are disposed at intervals in the up-down direction between the non-skin side sheet 21 and the skin side sheet 23. The rear waist elastic members 24b provide stretchability to the rear member 20b.

[0098] The installation of the waist elastic components 24f, 24b can be carried out using adhesives such as hot melt adhesives. For example, hot melt adhesives are applied to each waist elastic component 24f, 24b, so that it is stretched with a predetermined stretching ratio and sandwiched by the non-skin side piece 21 and the skin side piece 22, 23, so that the waist elastic components 24f, 24b can be installed. Thus, the non-skin side piece 21 and the skin side piece 22, 23 are joined by the waist elastic components 24f, 24b by adhesives.

[0099] The front member 20f has a front stretchable area 20EA provided with a front waist elastic member 24f, and the front member 20f stretches in the left-right direction in the front stretchable area 20EA, and has a front non-stretchable area 20NA on both sides (sides where the flaps 30 are provided) in the left-right direction relative to the front stretchable area 20EA.

[0100] The front stretchable area 20EA of the sanitary napkin 1 is continuously provided from the end EAa closest to one side in the left-right direction of the front stretchable area 20EA to the end EAb closest to the other side. The front stretchable area 20EA refers to a region from the end EAa on one side of the front waist elastic member 24f located closest to one side in the left-right direction to the end EAb on the other side of the front waist elastic member 24f located closest to the other side in the left-right direction of the plurality of front waist elastic members 24f. In addition, in the front stretchable area 20EA, the front waist elastic member 24f does not necessarily have to be continuous from one side to the other side in the left-right direction. The front waist elastic member 24f may also be provided intermittently in the left-right direction.

[0101] The rear side member 20b has a rear side elastic region 20EB provided with a rear side waist elastic member 24b, and the rear side member 20b is stretched in the left-right direction in the rear side elastic region 20EB. The rear side elastic region 20EB is a region that is continuous from the end of the other side of the one side joint 40a to the end of one side of the other side joint 40b in the left-right direction. Similar to the front side member 20f, the rear side waist elastic member 24b may be intermittently provided in the left-right direction.

[0102] In addition, it is preferable that the rear extension 20be is provided with a leg elastic member 25 (e.g., an elastic band) that is stretched and contracted along the leg opening 1b of the sanitary napkin 1. The rear extension 20be is contracted in the left-right direction and the up-down direction by the leg elastic member 25. This makes it easier for the leg openings 1b, 1b to fit the legs of the wearer.

[0103] In addition, as the sheet member constituting waist portion 20, other sheet members other than non-skin side piece 21 and skin side piece 22,23 may also be provided with.For example, waist portion 20 may also be a three-layer structure in which a nonwoven sheet is configured at a position closer to the skin side than skin side piece 22,23.In addition, non-skin side piece 21 may also be separated at the front side and the back side.In this case, the non-skin side of backsheet 13 may be exposed between the non-skin side piece 21 of the front side and the non-skin side piece 21 of the back side, or the independent non-skin side piece that the non-skin side piece 21 of the front side is connected to the non-skin side piece 21 of the back side may be provided with at the crotch portion.

[0104] In addition, the front member 20f of the sanitary napkin 1 has a dividing line (separating portion) 26 (e.g., an easy-tear line) having a length in the vertical direction at the end portion in the left-right direction. The dividing line 26 includes a one-side dividing line 26a provided on one side in the left-right direction and another-side dividing line 26b provided on the other side in the left-right direction. The wearer can easily tear the front member 20f using the dividing line 26.

[0105] In addition, the dividing line 26 of the present embodiment is provided in the entire area of ​​the front member 20f in the vertical direction, but the dividing line 26 may be provided only in a part of the front member 20f in the vertical direction. Figure 2 ) along the vertical direction, or a straight line or a curved line inclined relative to the vertical direction. In addition, preferably, the dividing line 26 is a dividing line that can easily tear the front member 20f in the vertical direction, or a notch portion provided at the end of the waist side or the end of the crotch side of the front member 20f. In addition, the dividing line 26 is not limited to an easy-tear line or a notch portion, and can also be a mark indicating the dividing position.

[0106] Furthermore, the front member 20f of the sanitary napkin 1 of the present embodiment is provided with a compression area E of a substantially rectangular shape having a length in the up-down direction at the end in the left-right direction. The compression area E is a portion formed by compressing the front member 20f in the thickness direction, and is a portion having a higher rigidity than the uncompressed portion. In the case of having such a compression area E, it is preferred that the dividing line 26 has a portion overlapping with the compression area E when observed in the thickness direction (front-back direction). In order to improve the skin touch when wearing, it is preferred that the waist portion 20 (front member 20f) is a soft raw material, but the softer the waist portion 20 is, the more difficult it is to apply a force applied to the dividing line 26 in order to divide the waist portion 20. Therefore, by overlapping the dividing line 26 with the compression area E having a higher rigidity when observed in the thickness direction, the force used by the wearer, etc. to divide the front member 20f using the dividing line 26 is easily concentrated on the dividing line 26, thereby making it easy to divide the front member 20f along the dividing line 26.

[0107] (wing 30)

[0108] The sanitary napkin 1 has a pair of wings 30 (engaging members) detachably engaged with the non-skin side of the front member 20f on both sides in the left-right direction of the waist portion 20. The pair of wings 30 has a side wing 30a located on one side in the left-right direction and another side wing 30b located on the other side in the left-right direction.

[0109] The wing piece 30 has a substrate sheet 31 and a snap-fitting portion 32. The substrate sheet 31 is a sheet member made of nonwoven fabric or the like. The outer ends of the left and right directions of each substrate sheet 31 are fixed to the waist portion 20 by a fixing portion 35, respectively. The fixing portion 35 has a side fixing portion 35a and a second side fixing portion 35b. One side wing piece 30a is fixed to the waist portion 20 (front member 20f) by a side fixing portion 35a, and the other side wing piece 30b is fixed to the waist portion 20 (front member 20f) by a second side fixing portion 35b. The fixing portion 35 (one side fixing portion 35a, the second side fixing portion 35b) is also a side joint 40 (one side joint 40a, the second side joint 40b). That is, in the sanitary napkin 1, the front member 20f, the rear member 20b and the wing piece 30 are integrally joined by the second side joint 40. However, the fixing portion 35 may be provided at a position different from the side joining portion 40 to join the wing panel 30 to the waist portion 20 .

[0110] The engaging portion 32 is a member that is disposed on the skin side of the substrate sheet 31, opposite to the non-skin side of the front member 20f, and is removably engaged with the non-skin side of the front member 20f. As the engaging portion 32, a male member of a nylon hook and loop fastener can be exemplified, and the male member has a protrusion (hook member) that hooks on the fibers constituting the non-skin side sheet 21. In addition, a member (e.g., a female member of a nylon hook and loop fastener) that is easily engaged with the engaging portion 32 can also be provided on the non-skin side of the non-skin side sheet 21. The engaging portion 32 is fixed to the substrate sheet 31 by bonding means such as an adhesive such as a hot melt adhesive and a fusion bond.

[0111] The engaging portions 32 are provided at the ends of the substrate sheet 31 opposite to the side fixed by the fixing portions 35 (the one-side fixing portion 35a and the other-side fixing portion 35b) in the left-right direction. The engaging portion 32 includes a one-side engaging portion 32a provided on the one-side wing piece 30a and a other-side engaging portion 32b provided on the other-side wing piece 30b. Specifically, in the wing piece 30, the one-side engaging portion 32a is located at the other side in the left-right direction relative to the one-side fixing portion 35a, and the other-side engaging portion 32b is located at the one side in the left-right direction relative to the other-side fixing portion 35b.

[0112] Preferably, the sanitary napkin 1 is packaged from the packaging body 100 (see Fig. 8A and Figure 8B) is taken out (described later), the wings 30a, 30b can be visually identified from the non-skin side (outside) of the sanitary napkin 1. It is further preferred that a pattern D is provided on at least one wing 30. The wing 30 of the sanitary napkin 1 of the present embodiment is provided with a pattern D of a floral pattern. As a result, the wearer, the person who wants the wearer to wear the sanitary napkin 1, etc. (hereinafter also referred to as "the wearer, etc.") can easily recognize the existence of the wing 30, and the wearer can easily recognize that the sanitary napkin 1 can be used as both an underpants type and a belt type. Therefore, the wearer of the sanitary napkin 1 can directly put on and take off the sanitary napkin 1 in an underpants type, or put it on and take it off in a belt type according to the situation at the time, and the ease of putting on and taking off the sanitary napkin 1 is improved. In addition, the wing 30 can be easily identified by the wearer, etc., thereby reducing the trouble of finding the wing 30, and easily promoting the wearing of the sanitary napkin 1 based on the correct wearing method. In addition, although the pattern D is provided on one side wing 30a and the other side wing 30b in the sanitary napkin 1, it can also be provided on any wing 30.

[0113] In addition, it is preferred that the wing 30 has a concavo-convex portion in the thickness direction. For example, the wing 30 is provided with a concavo-convex portion by providing a compressed portion formed by compression in the thickness direction. By providing the concavo-convex portion on the wing 30, the wearer can easily grasp the wing 30 when pinching it, and it is easy to perform the operation of engaging the wing 30 with the waist part 20 as described later.

[0114] In addition, the pattern D provided in the wing piece 30 may be formed by compression. That is, the pattern D may be formed by a compression portion and may have a concave-convex portion in the thickness direction.

[0115] <<<About the wearability of sanitary napkin 1>>>

[0116] Figure 4A and Figure 4B This is a schematic cross-sectional view of the sanitary napkin 1 as viewed from the waist opening 1a side. Figure 4A This is a diagram of a sanitary napkin 1 used in a panty type. Figure 4B This is a diagram of a sanitary napkin 1 used in a tape form. Figure 5 It is a developed plan view of the sanitary napkin 1 in a state where the front member 20f is separated from the rear member 20b along the dividing line 26.

[0117] The sanitary napkin 1 is a panty-type sanitary napkin in which the front member 20f and the rear member 20b are connected in a ring shape when it is initially taken out of the package. Figure 4A ). Therefore, the wearer can directly put on and take off the sanitary napkin 1 in the underwear type.

[0118] In addition, the front member 20f of the sanitary napkin 1 has a dividing line (separation portion) 26 having a length in the vertical direction at both ends in the left-right direction. Therefore, the front member 20f can be torn apart in the vertical direction along the dividing line 26, so that a part of the front member 20f can be separated from the rear member 20b. Figure 5 As shown in FIG. 1 , the separated sanitary napkin 1 is in a belt-like shape in which a pair of wings 30 extend from the rear member 20b to both outer sides in the left-right direction. Therefore, the wearer can also put on and take off the sanitary napkin 1 in a belt-like shape.

[0119] When the waist portion 20 is divided along the dividing line 26, the waist portion 20 is separated into a front waist portion 20fA, a rear waist portion 20bA and a non-separated portion 20fB. In the following description, the portion of the front side member 20f that is separated from the rear side member 20b on at least one side in the left-right direction is also referred to as the "front waist portion 20fA". On the other hand, the portion of the front side member 20f that is not separated from the rear side member 20b and remains on the side of the side joint 40 is also referred to as the "non-separated portion 20fB". In addition, the rear side member 20b and the non-separated portion 20fB after the front waist portion 20fA is separated by separation at the separation portion 26 are also referred to as the "rear waist portion 20bA". In addition, for the packaging body 100 (refer to Fig. 8A and Figure 8B ) The leg opening 1b of the sanitary napkin 1 in the initial state after being taken out, and the leg opening formed by engaging the wing 30 with the front waist portion 20fA after separating the front waist portion 20fA and the back waist portion 20bA by using the dividing line 26 are marked with the same figure mark 1b for explanation.

[0120] Figure 6A to Figure 6C and FIG. 7A to FIG. 7D This is a diagram for explaining an example of a method for a wearer to wear the sanitary napkin 1. Fig. 8A and Figure 8B This is a front view of the panty-type sanitary napkin 1 as viewed from the front. Figure 6C The sanitary napkin 1 can be put on and taken off by oneself or with the help of others while sitting on a toilet bowl (not shown) or standing (bending).

[0121] An example of a method of wearing the sanitary napkin 1 in a belt-type state by oneself will be described below.

[0122] First, if Fig. 6A As shown in FIG. 1 , the wearer opens the side flap 30a of the panty-type sanitary napkin 1 in the left-right direction to the outside (one side) in the left-right direction, so that the side dividing line 26a is exposed. Figure 6BAs shown, the wearer tears the end of one side of the front member 20f in the left-right direction in the vertical direction along the side dividing line 26a, so that the front waist portion 20fA, which is a part of the front member 20f, is separated from the non-separable portion 20fB and the rear member 20b (rear waist portion 20bA). Figure 6C As shown in FIG. 1 , the wearer pulls the separated part of the waist portion 20 to the front side of the thigh and wraps the waist portion 20 around the thigh on one side (one side). Fig. 7A As shown, one side wing 30a (engagement portion 32) is engaged with the non-skin side of the ventral waist portion 20fA (front member 20f) on one thigh. By engaging one side wing 30a with the waist portion 20 (front waist portion 20fA), the wearer's one (left) leg is passed through the leg opening 1b on one side in the left-right direction of the sanitary napkin 1. In addition, Figure 7B It means Fig. 7A This is a diagram of the inner side of the thigh with the sanitary napkin 1 wrapped around it.

[0123] exist Fig. 7A and Figure 7B In the state, the side joint 40a is located above one thigh of the wearer, and the absorbent body 10 (absorbent core 11) hangs down between the thighs. Therefore, the wearer rotates the sanitary napkin 1 along the circumferential direction of the thigh. Figure 7C As shown, the side joint portion 40a is aligned with one armpit (left armpit) of the wearer, and the absorbent body 10 is lifted up between the thighs.

[0124] Next, the wearer opens the other side wing 30b to the outside in the left-right direction, and also separates the front member 20f from the non-separable portion 20fB and the rear member 20b on the opposite side. At the same time, the wearer corrects the inclination of the absorbent body 10, which is inclined toward the thigh side (left side) on which the sanitary napkin 1 is wrapped, to a direction extending along the thigh, and aligns the absorbent body 10 with the thigh (the center of the wearer in the left-right direction). Then, as shown in FIG. Fig.7D As shown, the separated part of the waist portion 20 is pulled to the front side of the thigh, and then the waist portion 20 is also wrapped around the other side (right) thigh, and the other side wing piece 30b is pulled toward one side in the left-right direction, and the other side wing piece 30b is engaged with the non-skin side of the front waist portion 20fA (front side member 20f) on the right thigh.

[0125] In this way, Figure 4BAs shown, the ventral waist part 20fA of the front member 20f separated by the dividing line 26a, 26b becomes the state that utilizes a pair of wing pieces 30a, 30b to be connected with the back waist part 20bA (back member 20b) again in annular shape. In addition, by making the other side wing piece 30b engage with the waist part 20 (front waist part 20fA), thus become the following state: the front waist part 20fA separated by the other side dividing line 26b and the back waist part 20bA (back member 20b) are connected, so that the other (right side) leg of the wearer is passed through the leg opening 1b of the other side in the left and right direction. Then, it becomes the state that the two thighs of the wearer pass through the pair of leg opening 1b of the sanitary napkin 1. Finally, the wearer lifts the sanitary napkin 1, adjusts the position of the sanitary napkin 1 relative to the body of the wearer, so that the wearing of the sanitary napkin 1 is completed.

[0126] Thus, the sanitary napkin 1 of the present embodiment has the wings 30a and 30b that can be detachably engaged with the front waist portion 20fA. Therefore, when the wearer uses the sanitary napkin 1 in a belt-like manner, the wings 30 can be engaged with the front member 20f while visually recognizing the wings 30a and 30b on the front side of his / her body. Therefore, the wearability is good when the wearer wears the sanitary napkin 1 by himself / herself. In addition, when the sanitary napkin 1 is disassembled, the wearer can also disassemble the wings 30a and 30b from the front member 20f while visually recognizing the wings 30a and 30b on the front side of his / her body.

[0127] In addition, in the sanitary napkin 1 of the present embodiment, the wings 30a and 30b are provided at the non-skin side (outer side) of the waist portion 20, and the engaging portions 32a and 32b provided on the skin side of the wings 30a and 30b are engaged with the non-skin side of the front waist portion 20fA. However, this is not limited to the above, and the following mode may be adopted: the wings 30a and 30b are provided on the skin side (inner side) of the waist portion 20, and after the waist portion 20 is separated, the engaging portions 32a and 32b provided on the non-skin side of the wings 30a and 30b are engaged with the skin side of the front waist portion 20fA.

[0128] Furthermore, when the sanitary napkin 1 is worn directly in the underwear type, the sanitary napkin 1 can be taken off directly in the underwear type, but the front side member 20f can be torn apart by the dividing lines 26a and 26b to remove the sanitary napkin 1. Conversely, when the sanitary napkin 1 is worn in the belt type, the sanitary napkin 1 can be taken off without removing the wings 30a and 30b.

[0129] The sanitary napkin 1 is usually circulated in a state of being housed in a package 100 of a housing 101 . Fig. 8A It is a schematic perspective view of the package 100 . Figure 8B This is a diagram for explaining the sanitary napkin 1 in an initial state. Fig. 9This is a top view of the sanitary napkin 1 in its initial state as viewed from the front. Fig. 8A As shown, in the package 100, one or more sanitary napkins 1 are stored in the storage member 101. Specifically, Figure 8B and Fig. 9 As shown, the sanitary napkin 1 in the initial state is the sanitary napkin 1 when the sanitary napkin 1 is taken out from the storage unit 101 of the package 100. The sanitary napkin 1 in the initial state is the sanitary napkin 1 in the state where the wing 30 is engaged with the waist portion 20 and before the waist portion 20 is torn apart by the dividing line 26.

[0130] <<<About the understanding of sanitary napkins 1>>>

[0131] Conventionally, there is known a panty-type absorbent article which can be used as a belt type (expanded type) by partially dividing the waist member of the panty-type absorbent article (see Figure 1 to Figure 5 ) Such absorbent articles that can be worn as both underwear type and belt type have different wearing methods.

[0132] For example, in the underwear state ( Figure 1 In the case of a panty-type sanitary napkin 1, the sanitary napkin 1 can be put into a wearing state by: with both legs passing through a pair of leg openings 1b from the waist opening 1a, the sanitary napkin 1 is lifted up to a position where the waist opening 1a reaches the waist of the wearer. That is, the panty-type sanitary napkin 1 can be put on roughly symmetrically on the left and right sides of the wearer's body with the same action.

[0133] On the other hand, in the band-type state ( Figure 5 ) is worn, as described above, first, the end portion of the front side member 20f on one side in the left-right direction is torn open using the dividing line 26a on one side in the left-right direction of the panty-shaped sanitary napkin 1 ( Fig. 6A , Figure 6B ), the front waist part 20fA of the separated part is wrapped around one thigh ( Figure 6C ), so that one side wing piece 30a is engaged with the front waist portion 20fA, so that one leg of the wearer is passed through the leg opening 1b on one side in the left-right direction of the sanitary napkin 1 ( Figure 7A to Figure 7C Next, the other end of the front member 20f in the left-right direction is torn open, and the separated front waist portion 20fA is wrapped around the other thigh, so that the other side wing 30b is engaged with the front waist portion 20fA, so that the other leg of the wearer is passed through the other leg opening 1b in the left-right direction of the sanitary napkin 1 ( Fig.7D ).

[0134] As described above, the sanitary napkin 1 has different wearing methods and steps in the underpants-type state and the belt-type state. In particular, the belt-type state is put on through different steps on the left and right, so the wearer needs to be aware of the wearing method.

[0135] However, since a general panty-type absorbent article is symmetrical in a plan view, in an absorbent article such as the sanitary napkin 1 that can be worn in a panty-type state or a belt-type state, there is a risk that it is difficult for the wearer to recognize that the sanitary napkin 1 is worn in a belt-type state in a different step on the left and right sides. In particular, since the sanitary napkin 1 is in a panty-type state when initially taken out of the package 100, there is a problem that it is difficult for the wearer to recognize that the steps of wearing the sanitary napkin 1 in the belt-type state are different on the left and right sides.

[0136] In contrast, in the sanitary napkin 1 of the present embodiment, in the stretched state of the underwear type state, the sanitary napkin 1 is an asymmetrical shape relative to the center CC in the left-right direction, so when wearing it, it is easy for the wearer to realize that it is ideal to wear the sanitary napkin 1 in different steps on one side and the other side in the left-right direction.

[0137] The sanitary napkin 1 of this embodiment has mutually intersecting up-down direction, left-right direction and front-back direction, and has an annular waist part 20, a side wing 30a and another side wing 30b. The side wing 30a is provided on one side of the sanitary napkin 1 in the left-right direction, and has a side engaging portion 32a that can be detachably engaged with the waist part 20. The other side wing 30b is provided on the other side of the sanitary napkin 1 in the left-right direction, and has the other side engaging portion 32b that can be detachably engaged with the waist part 20. The side wing 30a is fixed to the waist part 20 by a side fixing portion 35a, and the other side wing 30b is fixed to the waist part 20 by a side fixing portion 35b. In the side wing 30a, the side engaging portion 32a is located at the other side (inner side) in the left-right direction than the side fixing portion 35a, and in the other side wing 30b, the other side engaging portion 32b is located at the one side (inner side) in the left-right direction than the other side fixing portion 35b. Moreover, the waist portion 20 includes a pair of dividing lines 26a and 26b for dividing the annular waist portion 20 into a front waist portion 20fA and a rear waist portion 20bA (rear member 20b).

[0138] In such a sanitary napkin 1, if Fig.10 As shown, in the extended state, the length L1a in the left-right direction from the end 30ae of the other side of the one side wing 30a to the end 35au of the other side of the one side fixing portion 35a is different from the length L1b from the end 30be of one side of the other side wing 30b to the end 35bu of one side of the other side fixing portion 35b (L1a≠L1b). Fig.10 It means to make Fig. 9 The diagram shows the sanitary napkin 1 in an extended state after extension.

[0139] like Fig.10 As shown, in the sanitary napkin 1 of the present embodiment, in the extended state, the length L1a in the left-right direction from the end 30ae of the other side of the one side wing 30a to the end 35au of the other side of the one side fixing portion 35a is longer than the length L1b from the end 30be of one side of the other side wing 30b to the end 35bu of one side of the other side fixing portion 35b (L1a>L1b).

[0140] The length L1a and the length L1b of the sanitary napkin 1 in the stretched state are different, so that the wearer etc. can easily recognize that the sanitary napkin 1 is asymmetrical in shape with respect to the center in the left-right direction. Therefore, when wearing it, the wearer etc. can easily recognize and realize that it is ideal to wear it in different steps on one side and the other side of the sanitary napkin 1. Especially in the case of an absorbent article that can also be worn in a panty-type state like the sanitary napkin 1, a general panty-type absorbent article has a symmetrical shape on the left and right sides, so the wearer etc. can easily be confused when trying to wear it in a belt-type state. In contrast, in the sanitary napkin 1, the sanitary napkin 1 in the initial panty-type state is asymmetrical in shape with respect to the center CC in the left-right direction, so that it is easy for the wearer etc. to recognize that the sanitary napkin 1 is not a general panty-type absorbent article, but can also be worn in a belt-type state, and is ideally worn in different steps on one side and the other side in the left-right direction.

[0141] In addition, the length and the like of the sanitary napkin 1 are measured and compared in the initial state of the sanitary napkin 1 taken out of the package ( Figure 8B , Fig. 9 ) after the telescopic member is extended ( Fig.10 ) Fig.10 The stretched state after the sanitary napkin 1 in the initial state is stretched specifically refers to a state in which no deformation other than stretching is applied after being taken out from the package 100, and specifically refers to a state in which all the stretchable components of the sanitary napkin 1 are stretched while the engagement between the wing 30 and the waist portion 20 is maintained without releasing the engagement between the wing 30 and the waist portion 20 and without tearing the waist portion 20 after being taken out from the package 100.

[0142] In addition, it is preferred that, in the extended state, the length L3a in the left-right direction from the left-right center 32ac of the one side engaging portion 32a to the end 35au on the other side of the one side fixing portion 35a is different from the length L3b in the left-right center 32bc of the other side engaging portion 32b to the end 35bu on one side of the other side fixing portion 35b (L3a≠L3b). In the sanitary napkin 1 of the present embodiment, in the extended state, the length L3a in the left-right direction from the left-right center 32ac of the one side engaging portion 32a to the end 35au on the other side of the one side fixing portion 35a is longer than the length L3b in the left-right center 32bc of the other side engaging portion 32b to the end 35bu on one side of the other side fixing portion 35b (L3a>L3b).

[0143] Thus, compared with the case where the length L3a and the length L3b are the same length, it is easier for the wearer to recognize that the sanitary napkin 1 is asymmetrical with respect to the center CC in the left-right direction. Also, it is easier for the wearer to recognize that it is ideal to wear the sanitary napkin 1 in different steps on one side and the other side in the left-right direction.

[0144] Preferably, the front waist portion 20fA (front member 20f) has a front stretchable region 20EA that can be stretched in the left-right direction. It is also preferred that, in the stretched state of the sanitary napkin 1, the length L6a from the left-right most side end EAa of the front stretchable region 20EA to the one side dividing line 26a and the length L6b from the left-right most other side end EAb of the front stretchable region 20EA to the other side dividing line 26b are different (L6a≠L6b). In the sanitary napkin 1 of the present embodiment, in the stretched state, the length L6a from the left-right most side end EAa of the front stretchable region 20EA to the one side dividing line 26a in the left-right direction is shorter than the length L6b from the left-right most other side end EAb of the front stretchable region 20EA to the other side dividing line 26b (L6a<L6b).

[0145] Thus, compared with the case where the length L6a and the length L6b are the same length, it is easier for the wearer to recognize that the sanitary napkin 1 is asymmetrical with respect to the center CC in the left-right direction. Also, it is easier for the wearer to recognize that it is ideal to wear the sanitary napkin 1 in different steps on one side and the other side in the left-right direction.

[0146] In addition, as described above, with respect to the sanitary napkin 1 having the absorbent body 10 with the absorbent core 11, it is preferred that, in the stretched state, the length L7a from the center of the absorbent body 10 in the left-right direction to the one side dividing line 26a and the length L7b from the center of the absorbent body 10 in the left-right direction to the other side dividing line 26b are different (L7a≠L7b). In the sanitary napkin 1 of the present embodiment, in the stretched state, the length L7a from the center (CC) of the absorbent body 10 in the left-right direction to the one side dividing line 26a is shorter than the length L7b from the center (CC) of the absorbent body 10 in the left-right direction to the other side dividing line 26b (L7a<L7b). In addition, in the sanitary napkin 1 of the present embodiment, as Fig.10 As shown in FIGS. 1 and 1 , the center of the absorbent body 10 is located at the same position as the center CC of the entire sanitary napkin 1 in the left-right direction.

[0147] Thus, compared with the case where the length L7a and the length L7b are the same length, it is easier for the wearer to recognize that the sanitary napkin 1 is asymmetrical with respect to the center CC in the left-right direction. Also, it is easier for the wearer to recognize that it is ideal to wear the sanitary napkin 1 in different steps on one side and the other side in the left-right direction.

[0148] In the case of the sanitary napkin 1 having the side joints 40, 40 that join the ends of the front member 20f and the rear member 20b of the annular waist portion 20 as described above, it is preferred that in the extended state, the length L5a from the end fae on one side of the front member 20f to the end 35as on one side of the one side fixing portion 35a and the length L5b from the end fbe on the other side of the front member 20f to the end 35bs on the other side of the other side fixing portion 35b are different (L5a≠L5b). In the sanitary napkin 1 of the present embodiment, in the extended state, the length L5a from the end fae on one side of the front member 20f to the end 35as on one side of the one side fixing portion 35a in the left-right direction is longer than the length L5b from the end fbe on the other side of the front member 20f to the end 35bs on the other side of the other side fixing portion 35b (L5a>L5b).

[0149] Thus, compared with the case where the length L5a and the length L5b are the same length, it is easier for the wearer to recognize that the sanitary napkin 1 is asymmetrical with respect to the center CC in the left-right direction. Also, it is easier for the wearer to recognize that it is ideal to wear the sanitary napkin 1 in different steps on one side and the other side in the left-right direction.

[0150] In addition, regarding the flap 30, it is preferable that the area of ​​the one side flap 30a is different from the area of ​​the other side flap 30b in the extended state. In the sanitary napkin 1 of the present embodiment, the area of ​​the one side flap 30a is larger than the area of ​​the other side flap 30b.

[0151] By visually recognizing the side wing pieces 30a and the other side wing pieces 30b of different sizes, the wearer can easily recognize that the sanitary napkin 1 is asymmetrical with respect to the center in the left-right direction, compared with the case where the side wing pieces 30a and the other side wing pieces 30b have the same area. Therefore, when wearing the sanitary napkin 1, the wearer can easily recognize that it is ideal to wear it in different steps on one side and the other side in the left-right direction.

[0152] When the front waist portion 20fA of the sanitary napkin 1 has the front stretchable region 20EA that can be stretched in the left-right direction as described above, it is preferred that Fig.10 As shown, when the sanitary napkin 1 is viewed in the front-back direction (thickness direction) in the stretched state, the one-side engaging portion 32a has a portion overlapping with the front-side stretchable area 20EA, and the other-side engaging portion 32b has a portion not overlapping with the front-side stretchable area 20EA. Thus, compared with the case where both engaging portions 32 overlap with the front-side stretchable area 20EA or the case where neither of the engaging portions 32 overlaps with the front-side stretchable area 20EA when viewed in the front-back direction, it is easy for the wearer to recognize that the sanitary napkin 1 has an asymmetric shape with respect to the center in the left-right direction, and when worn, it is easy for the wearer to recognize that it is ideal to wear the sanitary napkin 1 in different steps on one side and the other side in the left-right direction.

[0153] In addition, it is preferred that, in the stretched state of the sanitary napkin 1, when viewed in the front-back direction, the one side engaging portion 32a does not overlap with the one side dividing line 26a, while the other side engaging portion 32b overlaps with the other side dividing line 26b. Thus, compared with the case where both engaging portions 32 overlap with the dividing line 26 or the case where neither overlaps with the dividing line 26 when viewed in the thickness direction, it is easy for the wearer to recognize that the sanitary napkin 1 is asymmetrical in shape with respect to the center in the left-right direction, and when worn, it is easy for the wearer to recognize that it is ideal to wear the sanitary napkin 1 in different steps on one side and the other side in the left-right direction.

[0154] Furthermore, a “sanitary napkin set” including the sanitary napkin 1 and an indication 80 of how to wear the sanitary napkin 1 as described above is preferable. Fig.111 is a diagram showing a wearing method mark 80. In the present embodiment, the "sanitary napkin set" is a package 100. In the package 100, a wearing method mark 80 is provided on a portion of the back side 101B of the storage part 101 that can be visually recognized from the outside of the package 100. In addition, in the package 100, the back side 101B of the storage part 101 is a surface provided at a position opposite to the front side 101A, and the front side 101A is a surface on which the product name of the sanitary napkin 1 is recorded the largest.

[0155] The wearing method mark 80 is a mark for explaining the wearing method of the sanitary napkin 1. The wearing method mark 80 shows the wearing method of the sanitary napkin 1 as follows: put one leg of the wearer through the leg opening 1b on one side in the left-right direction, and then make the other side engaging portion 32b engage with the waist portion 20, thereby connecting the front waist portion 20fA and the rear waist portion 20bA separated by the other side dividing line 26b, so as to put the other leg of the wearer through the leg opening 1b on the other side in the left-right direction.

[0156] Specifically, a pattern and the following explanatory text indicating how to wear the mask when one side in the left-right direction is set as the left side of the wearer's body and the other side in the left-right direction is set as the right side of the wearer's body are marked according to the wearing steps.

[0157] "Open the left wing of the sanitary napkin to the left and right sides to expose the dividing line on the left side."

[0158] “The front member is torn apart along the dividing line on the left side to separate it into the front waist portion and the rear waist portion.”

[0159] "Pull the separated part to the front of the thigh, and fit the left wing on the upper thigh to the ventral waist."

[0160] "Similar to the left side, open the right wing outward, tear the front member along the dividing line on the right side to separate it into the front waist part and the back waist part, pull the separated part on the right side to the front side of the thigh, and make the right wing engage with the ventral waist part."

[0161] As described above, the sanitary napkin 1 is asymmetrically shaped with respect to the center CC in the left-right direction, and the steps of wearing are different on one side and the other side in the left-right direction. Therefore, by making the package 100 a set including the sanitary napkin 1 and the wearing method mark 80, it is easy to promote the wearer to wear the sanitary napkin 1 according to the following wearing method: first, the wearer's one leg (left leg) is put through the leg opening 1b on one side in the left-right direction of the sanitary napkin 1, and then the wearer's other leg (right leg) is put through the leg opening 1b on the other side in the left-right direction of the sanitary napkin 1.

[0162] In the package 100, the wearing instruction mark 80 is provided on the back surface 101B of the storage member 101 which can be visually recognized from the outside, but the present invention is not limited thereto. The wearing instruction mark 80 may also be provided on the inner surface of the storage member 101. In addition, the package 100 may be such that the wearing instruction mark 80 is provided on a sheet member such as paper which is independent from the storage member 101 and is stored in the storage member 101 together with the sanitary napkin 1.

[0163] ===Second Embodiment===

[0164] As an example of the underpants type absorbent article of the second embodiment, a underpants type (pants type) sanitary napkin 2 (hereinafter also referred to as sanitary napkin 2) will be described. In addition, similarly to the first embodiment, underpants type absorbent articles also include underpants type diapers, underpants type absorbent pads, and the like.

[0165] Similar to the sanitary napkin 1 of the first embodiment, in the underpants-type sanitary napkin 2, the waist portion 20 (the front member 20f and the rear member 20b) is connected in an annular shape to form a waist opening 2a and a pair of leg openings 2b. Fig.12 1 is a diagram showing the extended state of the sanitary napkin 2 of the second embodiment. Hereinafter, regarding the sanitary napkin 2 of the second embodiment, the same reference numerals are used for the same components as those of the first embodiment, and detailed description of the basic structure of the sanitary napkin 2 is omitted.

[0166] <<<About the understanding of sanitary napkin 2>>>

[0167] The sanitary napkin 2 of this embodiment has mutually intersecting up-down direction, left-right direction and front-back direction, and has an annular waist part 20, a side wing 30a and another side wing 30b. The side wing 30a is provided on one side of the sanitary napkin 2 in the left-right direction, and has a side engaging portion 32a that can be detachably engaged with the waist part 20. The other side wing 30b is provided on the other side of the sanitary napkin 2 in the left-right direction, and has the other side engaging portion 32b that can be detachably engaged with the waist part 20. The side wing 30a is fixed to the waist part 20 by a side fixing portion 35a, and the other side wing 30b is fixed to the waist part 20 by a side fixing portion 35b. In the side wing 30a, the side engaging portion 32a is located at a position closer to the other side (inner side) in the left-right direction than the side fixing portion 35a, and in the other side wing 30b, the other side engaging portion 32b is located at a position closer to the one side (inner side) in the left-right direction than the other side fixing portion 35b. In addition, the waist portion 20 has a pair of dividing lines 26a, 26b for separating the annular waist portion 20 into a front waist portion 20fA and a rear waist portion 20bA (rear member 20b). In addition, the front waist portion 20fA (front member 20f) has a front stretchable area 20EA that can be stretched in the left-right direction.

[0168] In such a sanitary napkin 2, if Fig.12 As shown in FIG. 1 , in the stretched state, a distance L2a from the left-right center CC of the sanitary napkin 1 to the left-right most end EAa of the front stretchable region 20EA in the left-right direction is different from a distance L2b from the left-right center CC of the sanitary napkin 1 to the left-right most end EAb of the front stretchable region 20EA in the left-right direction (L2a≠L2b). In the sanitary napkin 2 of the present embodiment, a distance L2a from the left-right center CC to the left-right most end EAa of the front stretchable region 20EA in the left-right direction is longer than a distance L2b from the left-right center CC to the left-right most end EAb of the front stretchable region 20EA in the left-right direction (L2a>L2b).

[0169] In the sanitary napkin 2, in the stretched state, the distance L2a and the distance L2b are different, and thus, compared with the case where the distance L2a and the distance L2b are the same length, the wearer etc. can easily recognize that the sanitary napkin 2 is asymmetrical in shape with respect to the center in the left-right direction. Therefore, when wearing, the wearer etc. can easily recognize and realize that it is ideal to wear it in different steps on one side and the other side of the sanitary napkin 2. In particular, in the case of an absorbent article that can also be worn in a panty-type state, such as the sanitary napkin 2, a general panty-type absorbent article has a symmetrical shape, so the wearer etc. is easily confused when trying to wear it in a belt-type state. In contrast, in the sanitary napkin 2, the sanitary napkin 2 in the panty-type state is asymmetrical in shape with respect to the center CC in the left-right direction, and thus, it is easy for the wearer etc. to recognize that the sanitary napkin 2 is not a general panty-type absorbent article but an absorbent article that can also be worn in a belt-type state, and it is ideal to wear it in different steps on one side and the other side in the left-right direction.

[0170] In addition, some structures of the sanitary napkin 1 described above can also be applied to the sanitary napkin 2.

[0171] The following structure makes it easy for the wearer to recognize that the sanitary napkin 2 is asymmetrical about the center CC in the left-right direction and that it is ideal to wear the sanitary napkin 1 in different steps on one side and the other side in the left-right direction.

[0172] For example, when the sanitary napkin 2 is in the extended state, the length L3a in the left-right direction from the center 32ac of the one side locking portion 32a to the end 35au on the other side of the one side fixing portion 35a and the length L3b from the center 32bc of the other side locking portion 32b in the left-right direction to the end 35bu on one side of the other side fixing portion 35b may be different (L3a≠L3b).

[0173] In addition, when the sanitary napkin 2 is in the extended state, the length L6a in the left-right direction from the end EAa of the front stretch region 20EA in the left-right direction closest to one side to the one side dividing line 26a and the length L6b from the end EAb of the front stretch region 20EA in the left-right direction closest to the other side to the other side dividing line 26b may be different (L6a≠L6b).

[0174] In the stretched state, the length L7a from the center of the absorbent body 10 in the left-right direction to the one side dividing line 26a and the length L7b from the center of the absorbent body 10 in the left-right direction to the other side dividing line 26b may be different (L7a≠L7b).

[0175] In the extended state, the length L5a in the left-right direction from the end fae of the front side member 20f on one side to the end 35as of the one side fixing portion 35a and the length L5b from the end fbe of the other side of the front side member 20f to the end 35bs of the other side fixing portion 35b may be different (L5a≠L5b).

[0176] In the extended state, the area of ​​the one side flap 30a may be different from the area of ​​the other side flap 30b.

[0177] Alternatively, when the sanitary napkin 2 is observed in the front-to-back direction (thickness direction) in the stretched state, Fig.12 As shown, the one-side engaging portion 32a has a portion overlapping with the front-side stretchable area 20EA, while the other-side engaging portion 32b has no portion overlapping with the front-side stretchable area 20EA.

[0178] In the sanitary napkin 2, when viewed in the front-to-back direction, the one-side snap-in portion 32a has a portion overlapping with the one-side dividing line 26a, and the other-side snap-in portion 32b has a portion overlapping with the other-side dividing line 26b, but is not limited thereto. Alternatively, in the extended state, when the sanitary napkin 2 is viewed in the front-to-back direction, the one-side snap-in portion 32a does not overlap with the one-side dividing line 26a, and the other-side snap-in portion 32b has a portion overlapping with the other-side dividing line 26b.

[0179] In addition, similar to the sanitary napkin 1 of the first embodiment, it is preferred that the "sanitary napkin set" includes a sanitary napkin 2 and a wearing instruction mark 80 for the sanitary napkin 2. In this embodiment, the "sanitary napkin set" is a package (not shown), and the wearing instruction mark 80 is provided on the outer surface of the storage body of the package. Fig.11 The wearing method mark 80 of the package 100 of the first embodiment shown is the same.

[0180] The sanitary napkin 2 is asymmetrical with respect to the center CC in the left-right direction, and the wearing procedure is different on one side and the other side in the left-right direction. Therefore, by making the package body a set including the sanitary napkin 2 and the wearing method mark 80, it is easy to promote the wearer to wear the sanitary napkin 2 according to the following wearing method: first, the wearer's one leg (left leg) is put through the leg opening 2b on one side in the left-right direction of the sanitary napkin 2, and then the wearer's other leg (right leg) is put through the leg opening 2b on the other side in the left-right direction of the sanitary napkin 2.

[0181] In the sanitary napkin 2 of the package, as Fig.12 As shown, the distance L2a from the left-right center CC to the left-right most end EAa of the front stretchable region 20EA is longer than the distance L2b from the left-right center CC to the left-right most end EAb of the front stretchable region 20EA (L2a>L2b). That is, in the sanitary napkin 2, the area where one side (the left side of the wearer) of the front waist portion 20fA is stretched more than the other side (the right side of the wearer) of the front waist portion 20fA reaches the outside in the left-right direction, and when both ends of the front waist portion 20fA in the left-right direction are pulled outward, one side of the front waist portion 20fA is more easily stretched than the other side of the front waist portion 20fA.

[0182] Preferably, the package body of the sanitary napkin 2 includes a wearing method mark 80. Preferably, the wearing method mark 80 provided on the package body of the sanitary napkin 2 indicates the following wearing method: first, one leg of the wearer is put through the leg opening 2b on one side in the left-right direction, and then the other side wing 30b is engaged with the waist part 20 (front waist part 20fA), thereby connecting the front waist part 20fA and the back waist part 20bA separated by the other side dividing line 26b, and then the other leg of the wearer is put through the leg opening 2b on the other side in the left-right direction.

[0183] When the sanitary napkin 2 is worn in a belt-like state, the sanitary napkin 2 is made into an asymmetrical shape with respect to the center CC in the left-right direction, and provided with a wearing method mark 80, thereby facilitating the wearer to wear the sanitary napkin 2 in different steps on one side and the other side in the left-right direction of the sanitary napkin 2. In addition, when the two ends of the front waist part 20fA and the wing 30 are respectively grasped and engaged, first, the wearer grasps the end of one side of the front waist part 20fA and the wing 30a on one side, respectively, and engages the two in a manner of surrounding one leg of the wearer, thereby forming a state in which one leg of the wearer passes through the leg opening 2b on one side in the left-right direction. At this time, for the sanitary napkin 2, since one side of the front waist part 20fA is easier to stretch than the other side of the front waist part 20fA, the engagement on one side in the left-right direction can be performed with a smaller force. Then, the wearer etc. grabs the end and the other side wing piece 30b of the other side of the front waist portion 20fA respectively, and makes these two engagements in the mode of surrounding the other leg of the wearer, thereby becomes the state that makes the other leg of the wearer pass the leg around opening 2b of the other side on the left-right direction.At this moment, because one side on the left-right direction of sanitary napkin 2 is the state of being engaged, so the engagement of the other side on the left-right direction is carried out by pulling the end and the other side wing piece 30b of the other side of the front waist portion 20fA.In addition, because the other side on the left-right direction of the front waist portion 20fA is difficult to stretch than one side, therefore compare with the situation of excessive stretching of the end on the other side of the front waist portion 20fA, easily make the other side wing piece 30b engage in the appropriate position of the front waist portion 20fA.

[0184] ===Other Implementation Methods===

[0185] The above embodiments are for easy understanding of the present invention and are not intended to limit the present invention. It is obvious that the present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

[0186] For example, it can also be Fig.13 , Fig.14 Sanitary napkins 3 and 4 as shown. Fig.13 , Fig.14 Each of these diagrams shows a modified example of the present embodiment. Fig.13 Sanitary napkins 3. Fig.14 The sanitary napkin 4 of FIG. 1 shows a situation where the sanitary napkin in the initial state is brought into the extended state. Fig.13 Sanitary napkins 3. Fig.14 The sanitary napkins 4 are shown as modified examples of the sanitary napkin 1 of the first embodiment, but may be modified examples of the sanitary napkin 2 of the second embodiment.

[0187] like Fig.10 As shown in the figures, in the sanitary napkin 1 of the first embodiment, the side wing 30a and the other side wing 30b are respectively rectangular, but are not limited thereto. As in the sanitary napkin 1, in the extended state, the length L1a from the end 30ae of the other side of the side wing 30a to the end 35au of the other side of the one fixing portion 35a and the length L1b from the end 30be of one side of the other side wing 30b to the end 35bu of one side of the other fixing portion 35b are different (L1a≠L1b), and the side wing 30a and the other side wing 30b are different shapes. For example, in Fig.13 In the sanitary napkin 3 shown, one side wing 30a is semicircular, and the other side wing 30b is rectangular. By visually recognizing the different shapes of the one side wing 30a and the other side wing 30b, the wearer can easily recognize that the sanitary napkin 3 is asymmetrical with respect to the center in the left-right direction. Therefore, when wearing the sanitary napkin 3, the wearer can easily recognize that it is ideal to wear the sanitary napkin 3 in different steps on one side and the other side in the left-right direction.

[0188] Preferably, if Fig.14 Like the sanitary napkin 4 of FIG. 1 , in the stretched state, the length L1a from the end 30ae of the other side of the one side wing 30a to the end 35au of the other side of the one side fixing portion 35a in the left-right direction is different from the length L1b from the end 30be of one side of the other side wing 30b to the end 35bu of one side of the other side fixing portion 35b (L1a≠L1b), and the one side engaging portion 32a (the other side engaging portion 32b) has a side end sa (side end sb) along the up-down direction, and in the stretched state, the side end sa (side end sb) is inclined relative to the up-down direction. By inclining the side end sa of the one side engaging portion 32a relative to the up-down direction, it is easy for the wearer to recognize that the sanitary napkin 4 is asymmetrical with respect to the center of the left-right direction, compared with the case where the side end sa of the one side engaging portion 32a is parallel to the up-down direction. Therefore, when wearing, it is easy for the wearer to recognize that it is ideal to wear the sanitary napkin 4 in different steps on one side and the other side in the left-right direction.

[0189] Alternatively, you can Fig.14Like the sanitary napkin 4 of FIG. 1 , in the stretched state, the length L1a from the end 30ae of the other side of the one side wing 30a to the end 35au of the other side of the one side fixing part 35a in the left-right direction is different from the length L1b from the end 30be of one side of the other side wing 30b to the end 35bu of one side of the other side fixing part 35b (L1a≠L1b), and in the stretched state, the lower end au of the one side engaging part 32a and the lower end bu of the other side engaging part 32b are arranged at different positions in the vertical direction. Thus, compared with the case where the lower end au of the one side engaging part 32a and the lower end bu of the other side engaging part 32b are arranged at the same position in the vertical direction, it is easy for the wearer to recognize that the sanitary napkin 4 is asymmetrical with respect to the center in the left-right direction. Therefore, when wearing, it is easy for the wearer to recognize that it is ideal to wear the sanitary napkin 4 in different steps on one side and the other side in the left-right direction.

[0190] The waist part 20 of the above-mentioned embodiment is set to annular shape by using a pair of lateral joints 40 to join the front member 20f and the rear member 20b, but it is not limited to this. For example, it can also be an annular waist part 20 formed by joining the front member 20f and the rear member 20b using a joint, or it can also be formed by the front member 20f and the rear member 20b being continuous to form an annular waist part 20 without a joint.

[0191] In addition, the front member 20f and the rear member 20b are not limited to being joined using the side joint 40 formed by welding, etc. For example, they can also be bonded using an adhesive with weaker bonding force, or they can be engaged using a hook that engages with the waistline portion 20 or a mother member of a hook and nylon Velcro. Furthermore, the hook can also be used as a locking portion of a wing (locking member).

[0192] In the above-mentioned embodiment, as a wearing method for wearing the sanitary napkin 1 in a belt-shaped state, the following wearing method is described: first, only the end portion of the front member 20f on one side in the left-right direction is torn off, and one leg of the wearer is put through the leg opening 1b on one side in the left-right direction of the sanitary napkin 1, and then the end portion of the front member 20f on the other side in the left-right direction is torn off, and the other leg of the wearer is put through the leg opening 1b on the other side in the left-right direction of the sanitary napkin 1, but the present invention is not limited thereto. For example, the two end portions of the front member 20f on the left-right direction of the sanitary napkin 1 in a panty-shaped state may be torn off in advance, and after the sanitary napkin 1 is completely in a belt-shaped state, one leg of the wearer is put through the leg opening 1b on one side in the left-right direction of the sanitary napkin 1, and then the other leg of the wearer is put through the leg opening 1b on the other side in the left-right direction of the sanitary napkin 1.

[0193] In the above-mentioned embodiment, elastic waist components 24f, 24b such as elastic cords are used to impart elasticity to the waist portion 20, but the present invention is not limited thereto. For example, an elastic sheet component may be provided on the waist portion 20 instead of the elastic cord to impart elasticity in the left-right direction to the waist portion 20. Examples of the elastic sheet component include elastic nonwoven fabrics and elastic films.

Claims

1. An underpants-type absorbent article, which has mutually intersecting up-down directions, left-right directions, and front-back directions, and comprises: an annular waist portion; a one-side engaging member, which is provided on one side in the left-right direction and has a one-side engaging portion that can be detachably engaged with the waist portion; and an other-side engaging member, which is provided on the other side in the left-right direction and has a other-side engaging portion that can be detachably engaged with the waist portion, the waist portion having a pair of separation portions for separating the annular waist portion into a front waist portion and a rear waist portion, characterized in that: The one side engaging member is fixed to the waist portion by a one side fixing portion, The other side engaging member is fixed to the waist portion by the other side fixing portion, In the one-side engaging member, the one-side engaging portion is located closer to the other side in the left-right direction than the one-side fixing portion. In the other-side engaging member, the other-side engaging portion is located closer to one side in the left-right direction than the other-side fixing portion. In the extended state, the length in the left-right direction from the other end of the one side engaging member to the other end of the one side fixing portion is different from the length from the one end of the other side engaging member to the one end of the other side fixing portion.

2. An underpants-type absorbent article, which has mutually intersecting up-down directions, left-right directions, and front-back directions, and has: an annular waist portion; a one-side snap-in member, which is provided on one side in the left-right direction and has a one-side snap-in portion that can be detachably snap-into the waist portion; and an other-side snap-in member, which is provided on the other side in the left-right direction and has a other-side snap-in portion that can be detachably snap-into the waist portion, the waist portion having a pair of separation portions for separating the annular waist portion into a front waist portion and a rear waist portion, characterized in that The front waist portion has a front stretchable area that can stretch in the left-right direction. The one side engaging member is fixed to the waist portion by a one side fixing portion, The other side engaging member is fixed to the waist portion by the other side fixing portion, In the one-side engaging member, the one-side engaging portion is located closer to the other side in the left-right direction than the one-side fixing portion. In the other-side engaging member, the other-side engaging portion is located closer to one side in the left-right direction than the other-side fixing portion. In the stretched state, a distance from the center of the underpants-type absorbent article in the left-right direction to the end of the front stretchable region on one side in the left-right direction is different from a distance from the center of the underpants-type absorbent article in the left-right direction to the end of the front stretchable region on the other side in the left-right direction.

3. The underpants-type absorbent article according to claim 1 or 2, characterized in that: In the extended state, the length in the left-right direction from the left-right center of the one side engaging portion to the other side end of the one side fixing portion is different from the length from the left-right center of the other side engaging portion to the one side end of the other side fixing portion.

4. The underpants-type absorbent article according to claim 1 or 2, characterized in that: The front waist portion has a front stretchable area that can stretch in the left-right direction. The pair of separation parts includes a one-side separation part provided on one side in the left-right direction and an other-side separation part provided on the other side in the left-right direction. In the extended state, a length in the left-right direction from the left-rightmost end of the front stretchable region to the one separated portion is different from a length from the left-rightmost end of the front stretchable region to the other separated portion.

5. The underpants-type absorbent article according to claim 1 or 2, characterized in that: The underpants-type absorbent article has an absorbent body having an absorbent core. The pair of separation parts includes a one-side separation part provided on one side in the left-right direction and an other-side separation part provided on the other side in the left-right direction. In the extended state, a length from the center of the absorbent body in the left-right direction to the one side separation portion and a length from the center of the absorbent body in the left-right direction to the other side separation portion are different.

6. The underpants-type absorbent article according to claim 1 or 2, characterized in that: The annular waist portion has a pair of joint portions for respectively joining the end portions of the front side member and the rear side member. The front member constitutes at least a part of the front waist portion. The rear member constitutes at least a part of the rear waist portion, In the extended state, the length from one end of the front side member to one end of the one fixing portion in the left-right direction is different from the length from the other end of the front side member to the other end of the other fixing portion.

7. The underpants-type absorbent article according to claim 1 or 2, characterized in that: In the extended state, the area of ​​the one-side engaging member is different from the area of ​​the other-side engaging member.

8. The underpants-type absorbent article according to claim 1 or 2, characterized in that: The shape of the one-side engaging member is different from the shape of the other-side engaging member.

9. The underpants-type absorbent article according to claim 1 or 2, characterized in that: The one side engaging portion has a side end along the up-down direction, In the extended state, the side end has an inclination relative to the up-down direction.

10. The underpants-type absorbent article according to claim 1 or 2, characterized in that: In the extended state, the lower end of the one-side engaging portion and the lower end of the other-side engaging portion are disposed at different positions in the up-down direction.

11. The underpants-type absorbent article according to claim 1 or 2, characterized in that: A pattern is provided on the one side engaging member.

12. The underpants-type absorbent article according to claim 1 or 2, characterized in that: The front waist portion has a front stretchable area that can stretch in the left-right direction. In the extended state, when viewed along the front-to-back direction, The one side engaging portion has a portion overlapping with the front side telescopic region, The other-side engaging portion does not have a portion overlapping with the front telescopic region.

13. The underpants-type absorbent article according to claim 1 or 2, characterized in that: The pair of separation parts includes a one-side separation part provided on one side in the left-right direction and an other-side separation part provided on the other side in the left-right direction. In the extended state, when viewed along the front-to-back direction, The one side engaging portion does not overlap with the one side separating portion, The other-side engaging portion has a portion overlapping with the other-side separating portion.

14. A kit of underwear-type absorbent articles, characterized in that: The underpants-type absorbent article kit comprises: the underpants-type absorbent article according to claim 1 or 2; and a label for explaining how to wear the underpants-type absorbent article. The underpants-type absorbent article has a waist opening and a pair of leg openings. The label indicates the following wearing method: one leg of the wearer is put into a state where one leg is passed through the leg opening on one side in the left-right direction, and then the engaging portion on the other side is engaged with the waist portion, thereby connecting the front waist portion and the rear waist portion separated by the separation portion, thereby putting the other leg of the wearer into a state where the other leg is passed through the leg opening on the other side in the left-right direction.

15. The kit of underpants-type absorbent articles according to claim 14, characterized in that: In the panty-type absorbent article, The front waist portion has a front stretchable area that can stretch in the left-right direction. A distance from the center of the pull-on absorbent article in the left-right direction to the end of the front stretchable region on one side in the left-right direction is longer than a distance from the center of the pull-on absorbent article in the left-right direction to the end of the front stretchable region on the other side in the left-right direction.

Images