CN112107429B

CN112107429B - Pants-type absorbent article and method for manufacturing pants-type absorbent article

Info

Publication number: CN112107429B
Application number: CN201910536355.5A
Authority: CN
Inventors: 高桥雄二; 郑凌霜; 史異
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2023-03-28
Anticipated expiration: 2039-06-20
Also published as: KR20220022484A; JP6878711B1; JPWO2020255518A1; WO2020255518A1; CN112107429A

Abstract

Provided is a pants-type absorbent article (1) having a volatile material (26) which has a long-lasting effect and is less likely to cause excessive irritation to the skin of a wearer. A pants-type absorbent article (1) having an absorbent main body (20) having a liquid-absorbent core (22) and a waist member (10) superposed and joined to the non-skin side of the absorbent main body (20) and stretchable in the left-right direction, characterized in that the waist member (10) has a plurality of sheets stacked in the thickness direction, the plurality of sheets has a 1 st sheet (15) disposed on the skin side and a 2 nd sheet (14) disposed on the non-skin side, and a volatile material (26) is provided on the non-skin side of the 1 st sheet (15) and on the skin side of the 2 nd sheet (14) of the waist member (10).

Description

Pants-type absorbent article and method for manufacturing pants-type absorbent article

Technical Field

The present invention relates to a pants-type absorbent article and a method of manufacturing a pants-type absorbent article.

Background

A pants-type absorbent article (hereinafter, also simply referred to as an absorbent article) is widely known, which is provided with an absorbent main body having an absorbent core having liquid absorption properties and a volatile material for reducing a feeling of discomfort felt by a wearer or the like. For example, patent document 1 discloses a technique of reducing unpleasant odor derived from excrement by providing a volatile perfume on the outer surface, inner surface, or the like of a waist region 10 of a pants-type absorbent article (pants-type wearing article).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-102612

Disclosure of Invention

Problems to be solved by the invention

In the pants-type absorbent article disclosed in patent document 1, when a perfume (volatile substance) is provided on the inner surface (skin side) of the waist region 10, the components of the volatile substance that volatilize come into direct contact with the skin of the wearer, and therefore, there is a possibility that excessive irritation may be given to the skin of the wearer, or skin problems such as rash may occur. On the other hand, when a perfume (volatile substance) is provided on the outer surface (non-skin side) of the waist region 10, the amount of the volatile substance to be volatilized may become large, and the effect of the volatile substance may be difficult to be sustained.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a pants-type absorbent article including a volatile material which is durable in effect and less likely to cause excessive irritation to the skin of a wearer.

Means for solving the problems

A main invention for achieving the above object is a pants-type absorbent article having a vertical direction and a horizontal direction intersecting each other, and having: an absorbent body having an absorbent core that absorbs liquid; and a waist member that is overlapped and joined to a non-skin side of the absorbent main body and stretches and contracts in the left-right direction, wherein the waist member includes a plurality of sheets stacked in a thickness direction, the plurality of sheets includes a 1 st sheet disposed at a position closest to a skin side and a 2 nd sheet disposed at a position closest to the non-skin side, and a volatile material is provided at a position closer to the skin side than the 1 st sheet and closer to the skin side than the 2 nd sheet of the waist member.

Other features of the present invention will be apparent from the description of the specification and the accompanying drawings.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a pants-type absorbent article can be provided that has a volatile material that is durable in effectiveness and that is less likely to cause excessive irritation to the skin of the wearer.

Drawings

Fig. 1 is a schematic perspective view of a pants-type absorbent article 1.

Fig. 2 is a plan view and a schematic sectional view of the pant-type absorbent article 1 in an unfolded state.

Fig. 3 is a plan view and a schematic sectional view showing a waistline-coated region 26D of a temperature sensitive agent 26 provided on the waistline member 10.

Fig. 4 is a plan view of the absorbent main body 20.

Fig. 5 isbase:Sub>A sectional view of fig. 4 looking towardbase:Sub>A-base:Sub>A and isbase:Sub>A schematic view of the absorbent main body 20.

Fig. 6 is a flowchart showing a method of determining a location to which a temperature sensitive agent 26 is applied.

Fig. 7 is a plan view illustrating the arrangement of the temperature sensitive agent 26 provided in the absorbent article 1.

Fig. 8 is a cross-sectional view of the absorbent article 1 as viewed from B-B in fig. 7.

Fig. 9 is a flowchart of each step of manufacturing the absorbent article 1.

Fig. 10 is a schematic diagram illustrating a manufacturing apparatus 100 for manufacturing the absorbent article 1.

Fig. 11 is a schematic view of the direction C-C of fig. 8 and shows the width dimension in the left-right direction of the gathers formed in the non-stretchable sheet 14 and the 1 st sheet 15.

Description of the reference numerals

1: pant-type absorbent article, 1a: waist opening, 1b: leg hole opening portion, 10: waist component

10f: front side waist member (ventral side waist member), 10fe: front side joint part

10ff: waist front end portion, 10b: rear waist member (Back waist member)

10be: rear side joint, 10bf: waist rear end, 10et: upper end (predetermined position)

12: stretchable sheet (stretch film, 3 rd sheet), 12L: stretchable sheet continuous body

12f: front stretchable sheet, 12fa: an elastic sheet for the front side of the waist,

12fb: main body front stretchable sheet, 12b: rear stretchable sheet

12ba: waist rear stretchable sheet, 12bb: stretchable sheet on rear side of main body

14: non-stretchable sheet (No. 2 sheet), 14L: non-stretchable sheet continuous body

15: sheet 1, 20: absorbent body, 20es: two ends

20et: upper end (outer end), 22: absorbent core, 22a: core cladding sheet

22et: upper end, 24: skin side sheet, 25: non-skin side sheet, 25a: liquid-impermeable sheet

25b: liquid-permeable sheet, 25c: projection, 26: temperature-sensing agent (volatile substance)

26D: waist coating area, 26Df: front side waist coating area

26Db: rear side waist coating region, 26W: temperature sensitive agent overlap region, 26p: temperature sensitive agent-coated region

26n: non-coated region, 30: crotch elastic band, 40: turning part (japanese: 12498\\ 1253112472: three-dimensional pleat

50B: fulcrum, 50S: vertex, 51: three-dimensional gather elastic member, 60: post-processing belt

100: manufacturing apparatus, 110: conveying mechanism, 120: ultrasonic bonding mechanism

130: absorbent body engagement mechanism, 131: engaging roller, 140: temperature sensing agent coating mechanism

150: adhesive application mechanism, 160: folding mechanism, 170: no. 1 sheet joining mechanism

171: press roll, 180: leg-surrounding portion forming mechanism, 190: pants-type forming mechanism

200: cutting mechanism, 201: cutting roll, CL: center line

Detailed Description

At least the following matters will be made clear from the description of the present specification and the attached drawings.

A pants-type absorbent article having a vertical direction and a horizontal direction intersecting each other, comprising: an absorbent body having an absorbent core that absorbs liquid; and a waist member that is overlapped and joined to a non-skin side of the absorbent main body and stretches and contracts in the left-right direction, wherein the waist member includes a plurality of sheets stacked in a thickness direction, the plurality of sheets includes a 1 st sheet disposed at a position closest to a skin side and a 2 nd sheet disposed at a position closest to the non-skin side, and a volatile material is provided at a position closer to the skin side than the 1 st sheet and closer to the skin side than the 2 nd sheet of the waist member.

According to such a pants-type absorbent article, it is possible to provide a pants-type absorbent article provided with a volatile material that has a long-lasting effect and is less likely to cause excessive irritation to the skin of the wearer.

The pants-type absorbent article desirably has the volatile substance as a temperature-sensitive agent or a cold-sensitive agent for stimulating a temperature-sensitive TRP channel.

According to such a pants-type absorbent article, the temperature sensitive agent or the cooling agent comes into contact with the skin of the wearer through the nonwoven fabric, and therefore the wearer can gradually feel the effect of the temperature sensitive agent or the cooling agent on the skin.

In the pants-type absorbent article, it is desirable that both the 1 st sheet and the 2 nd sheet are nonwoven fabrics, and the fiber density of the 1 st sheet is lower than the fiber density of the 2 nd sheet.

According to such a pants-type absorbent article, the volatile material can be easily leaked to the 1 st sheet side (skin side).

In the pants-type absorbent article, the waist member desirably has an abdominal-side waist member that contacts the abdominal side of the wearer, and the volatile material is provided on the abdominal-side waist member.

According to such a pants-type absorbent article, the effect of the volatile material can be improved in the lower abdomen.

In the pants-type absorbent article, it is desirable that the waist member has a back-side waist member that comes into contact with the back side of the wearer, and the volatile material is provided on the back-side waist member.

According to such a pants-type absorbent article, the effect of volatile substances can be improved in the sacral region.

In the pants-type absorbent article, it is desirable that the total amount of the volatile material provided on the abdominal-side waist member is larger than the total amount of the volatile material provided on the back-side waist member.

According to such a pants-type absorbent article, a greater effect of volatile substances can be imparted to the lower abdomen portion than to the sacrum portion.

The pants-type absorbent article desirably has a 3 rd sheet disposed between the 1 st sheet and the 2 nd sheet, and the volatile material is provided on a non-skin side of the 1 st sheet and on a skin side of the 3 rd sheet.

According to such a pants-type absorbent article, it is easy to control the movement of the volatile material to the skin side or the non-skin side and the movement amount thereof.

In the pants-type absorbent article, the volatile material is desirably provided on the non-skin surface of the 1 st sheet.

According to such a pants-type absorbent article, the volatile material can be prevented from directly contacting the skin of the wearer, and the effect of the volatile material can be imparted to the wearer to the maximum extent.

In the pants-type absorbent article, it is desirable that at least a part of the 1 st sheet is disposed so as to overlap with the skin side of the absorbent main body, and the volatile material is provided between the non-skin side surface of the 1 st sheet and the skin side surface of the absorbent main body in an area where the 1 st sheet and the absorbent main body overlap.

According to such a pants-type absorbent article, the volatile material can be provided at a position close to the skin of the wearer, and the volatile material can be made less likely to leak to the non-skin side.

In the pants-type absorbent article, it is desirable that at least a part of the 1 st sheet overlaps the absorbent core when viewed in the front-rear direction, and the volatile material is provided between the non-skin side surface of the 1 st sheet and the skin side surface of the absorbent main body in a region where the 1 st sheet and the absorbent core overlap.

According to such a pants-type absorbent article, the volatile material can be provided at a position close to the skin of the wearer, and the volatile material can be further made less likely to leak to the non-skin side.

In the pants-type absorbent article, it is desirable that the volatile material be provided in the absorbent main body, and that the volatile material be provided in the absorbent main body and the volatile material be provided in the waist member so as to overlap each other when viewed in the front-rear direction.

According to such a pants-type absorbent article, the waist member and the volatile material of the absorbent main body can provide an effect to the wearer in a superposed manner, and therefore a greater effect of the volatile material can be provided to the wearer.

In this pants-type absorbent article, it is desirable that wrinkles along the vertical direction be formed on the surfaces of the 1 st and 2 nd sheets in a natural state, and an average of widths in the horizontal direction of each wrinkle formed in the 1 st sheet is smaller than an average of widths in the horizontal direction of each wrinkle formed in the 2 nd sheet.

According to such a pants-type absorbent article, since the volatile material is easily moved toward the skin, the effect of the volatile material can be promptly imparted to the wearer.

In this pants-type absorbent article, it is desirable that wrinkles along the vertical direction be formed on the surfaces of the 1 st and 2 nd sheets in a natural state, and an average of widths in the horizontal direction of each wrinkle formed on the 1 st sheet is equal to or greater than an average of widths in the horizontal direction of each wrinkle formed on the 2 nd sheet.

According to such a pants-type absorbent article, since the volatile material is less likely to move toward the skin, the effect of the volatile material can be imparted to the wearer for a long period of time.

In the pants-type absorbent article, it is preferable that the waist member has an extensible film that extends and contracts in the left-right direction, and has a portion where the extensible film and the volatile material overlap when viewed in the front-back direction, and the extensible film is disposed on a non-skin side of the volatile material in a thickness direction.

According to such a pants-type absorbent article, it is possible to make it difficult for volatile substances to leak out to the non-skin side.

The pants-type absorbent article desirably has a post-treatment belt for holding the pants-type absorbent article in a rolled state when the used pants-type absorbent article is discarded, and the waist member has a portion where the post-treatment belt and the volatile material overlap each other when viewed in the front-rear direction, and the post-treatment belt is disposed on the non-skin side of the volatile material in the thickness direction.

A method for manufacturing a pants-type absorbent article having an absorbent main body and a waist member joined to the absorbent main body in a superposed manner on a non-skin side, the method comprising the steps of: a conveying step of conveying a 1 st sheet disposed at a position closest to a skin side of the lumbar member and a 2 nd sheet disposed at a position closest to a non-skin side of the lumbar member in a predetermined conveying direction; a volatile substance application step of applying a volatile substance to at least one of the non-skin side surface of the 1 st sheet and the skin side surface of the 2 nd sheet; an adhesive application step of applying an adhesive to at least one of a non-skin side surface of the 1 st sheet and a skin side surface of the 2 nd sheet; and a sheet joining step of laminating and joining the non-skin-contact side surface of the 1 st sheet and the 2 nd sheet.

According to the method for manufacturing a pants-type absorbent article, it is possible to provide a pants-type absorbent article having a volatile material which is durable in effect and less likely to cause excessive irritation to the skin of the wearer.

In the method for producing a pants-type absorbent article, it is preferable that the adhesive application step is performed after the volatile material application step is performed.

According to the method for producing a pants-type absorbent article, it is easy to suppress occurrence of poor adhesion and the like due to drying of the adhesive during conveyance.

In the method for producing a pants-type absorbent article, it is desirable that the volatile material and the adhesive are applied so as not to overlap with each other when the pants-type absorbent article is viewed in the thickness direction.

According to the method for producing a pants-type absorbent article, the temperature sensitive agent 26 and the adhesive can be prevented from being deteriorated.

= 1 embodiment = = = = = = = = = = = = = = = = = = = = = = = = = = = = = a 1 st embodiment

A pants-type absorbent article 1 provided with a temperature sensitive agent 26 (volatile material) described later will be described as an example of an absorbent article provided with a volatile material according to embodiment 1. In the following description, the absorbent article 1 for physiological use is described, but the absorbent article 1 of the present embodiment includes diapers for adults and infants, for example, and the application is not limited to physiological use.

< basic Structure of absorbent article 1 >

Fig. 1 is a schematic perspective view of a pants-type absorbent article 1, and fig. 2 is a plan view and a cross-sectional schematic view of the pants-type absorbent article 1 in an unfolded state.

In the pants-type state shown in fig. 1, the absorbent article 1 has a "vertical direction", a "horizontal direction", and a "front-rear direction" that intersect with each other. The vertical direction of the paper surface in fig. 1 is the vertical direction, the upper side (lower side) of the paper surface is the "upper" ("lower") in the vertical direction, and the left side (right side) of the paper surface is the left side (right) in the left-right direction. In the front-rear direction, the side that becomes the abdomen side of the wearer when worn is referred to as the "front side", and the side that becomes the back side of the wearer is referred to as the "rear side".

In the developed state of the absorbent article 1 shown in fig. 2 (the state in which the pants-type absorbent article 1 is spread out in a plane before being formed into a pants-type shape), the absorbent article 1 has a "longitudinal direction", "a width direction", and a "thickness direction" which intersect with each other. The longitudinal direction of the paper surface in fig. 2 is defined as the longitudinal direction, the upper side (lower side) of the paper surface is defined as the "front (ventral side)" of the longitudinal direction ("rear (dorsal side)"), the direction perpendicular to the longitudinal direction on the paper surface is defined as the width direction, and the left side (right side) of the paper surface is defined as the left (right) of the width direction. The direction (direction passing through the paper) orthogonal to the longitudinal direction and the width direction is defined as the thickness direction, and the side in contact with the skin of the wearer in the thickness direction is defined as the "skin side" and the opposite side is defined as the "non-skin side".

The top view (for example, fig. 2) of the present embodiment shows the extended state of the object. Here, the "extended state" refers to a state in which the members shown in a plan view are extended without wrinkles by extending each elastic body (for example, a crotch elastic band 30, a stretchable sheet 12 (corresponding to a stretchable film), and the like described later) provided in the absorbent article 1. For example, fig. 2 shows a state in which the waist member 10 and the absorbent body 20, which will be described later, constituting the absorbent article 1 are extended until the dimensions of the members alone match or are close to the dimensions of the members. The non-stretched state is referred to as a "natural state" in which the elastic bodies are naturally contracted to cause wrinkles and the like in members and the like shown in a plan view.

The absorbent article 1 of the present embodiment includes the waist member 10 and the absorbent main body 20, and hereinafter, a process of forming the waist member 10 and the absorbent article 1 into a pants-type article will be described first. Then, the absorbent main body 20 will be explained later.

As shown in fig. 2, the waistline member 10 has a substantially hourglass shape in a plan view in a deployed state. That is, the center portion in the longitudinal direction is recessed inward in the width direction, and the recessed portion forms a pair of leg hole openings 1b shown in fig. 1 when formed into a pants-type.

The waistline member 10 includes a front waistline member 10f (corresponding to an abdominal waistline member) which is positioned on the front side of a center line CL positioned at the center of the absorbent article 1 in the longitudinal direction and which abuts against the abdominal side of the wearer, and a rear waistline member 10b (corresponding to a back waistline member) which is positioned on the rear side of the center line CL and which abuts against the back side of the wearer. The front waist member 10f (the rear waist member 10 b) has a waist front end portion 10ff (a waist rear end portion 10 bf) extending in the width direction at the front (rear) end portion and front joining portions 10fe (rear joining portions 10 be) extending in the longitudinal direction provided at both left and right end portions (both are diagonally shaded rightward and downward in fig. 2).

In addition, the lumbar member 10 of the present embodiment includes: a non-stretchable sheet 14 (corresponding to the 2 nd sheet) formed in the shape of the waistline member 10 and having almost no stretchability in the right-and-left direction; and a stretchable sheet 12 (a front stretchable sheet 12f and a rear stretchable sheet 12 b) (corresponding to the 3 rd sheet) which is laminated on a part of the skin-side surface of the non-stretchable sheet 14 and has stretchability in the left-right direction. Further, a part of the non-stretchable sheet 14 is extended outward from the outer end 20et of the absorbent main body 20 in the longitudinal direction (vertical direction), folded back inward in the longitudinal direction and toward the skin side in the thickness direction at a predetermined position 10et in the longitudinal direction, and joined to the non-stretchable sheet 14 and the skin side of the absorbent main body 20 in a state of being laminated. Hereinafter, the portion of the non-stretchable sheet 14 folded back is also referred to as the 1 st sheet 15, and the predetermined position 10et where the non-stretchable sheet 14 is folded back is also referred to as the upper end 10et of the waistline member 10.

The 1 st sheet 15 may be a sheet member different from the non-stretchable sheet 14. That is, the 1 st sheet 15 may be formed not by folding back the non-stretchable sheet 14 at the upper end 10et but by a sheet member such as a nonwoven fabric separate from the non-stretchable sheet 14.

In the present embodiment, the non-stretchable sheet 14 and the 1 st sheet 15 are formed of, for example, a hydrophilic through-air nonwoven fabric, a spunbond nonwoven fabric, or the like. The nonwoven fabrics of the non-stretchable sheet 14 and the 1 st sheet 15 desirably have different fiber densities. Specifically, the fiber density of the 1 st sheet 15 is desirably lower than that of the non-stretch sheet 14. With such a configuration, the temperature sensitive agent 26 of the below-described waist member 10 is prevented from leaking out of the non-stretchable sheet 14 (non-skin side) and being discharged into the atmosphere, and is easily leaked out of the 1 st sheet 15 (skin side) and moved into the absorbent article 1 (between the absorbent article 1 and the wearer).

In addition, since the absorbent article 1 has stretchability in the left-right direction due to the stretchable sheet 12, wrinkles along the vertical direction are formed on the surfaces of the first sheet 15 and the non-stretchable sheet 14 in a natural state (see fig. 11). The average of the widths in the left-right direction of the respective gathers formed in the 1 st sheet 15 (average of 15L1 to 15L5 in fig. 11) is smaller than the average of the widths in the left-right direction of the respective gathers formed in the non-stretchable sheet 14 (average of 14L1 to 14L5 in fig. 11).

The waist member 10 is provided with a temperature sensitive agent 26 as a volatile substance. Fig. 3 is a plan view and a schematic sectional view showing a waistline-coated region 26D of a temperature sensitive agent 26 provided on the waistline member 10. As shown in fig. 3, the temperature sensitive agent 26 is provided in the left-right direction (hatched portion in fig. 3) on both the front waist member 10f on the abdominal side (front side) and the rear waist member 10b on the back side (rear side) of the waist member 10.

Specifically, the temperature sensitive agent 26 on the abdominal side (back side) is a front waist coating region 26Df (back waist coating region 26 Db) having a predetermined width in the vertical direction and continuing from the left end to the right end of the front waist member 10f (back waist member 10 b) in the horizontal direction so as to extend over at least a part of the absorbent body 20.

The temperature sensitive agent 26 is provided in any region in the thickness direction on the non-skin side of the 1 st sheet 15 disposed at the position closest to the skin side and on the skin side of the non-stretchable sheet 14 disposed at the position closest to the non-skin side. In the present embodiment, as shown in the sectional view of fig. 3, the

waistline members

10f, 10b are provided with waistline application regions 26Df, 26Db on the non-skin side of the 1 st sheet 15 and the skin side of the

stretchable sheets

12f, 12b, respectively.

The front waist coating region 26Df and the rear waist coating region 26Db overlap with the absorbent core 22 and the temperature sensitive agent coating region 26p of the absorbent main body 20 (described later) when viewed in the thickness direction (see fig. 7 and 8).

The temperature sensitive agent 26 is provided for alleviating physiological pain and chill symptoms of the wearer, contains a temperature sensitive stimulant which gives a stimulus to the temperature of the wearer to warm the wearer, and is provided in a state of being mixed with a solvent which is a volatile substance.

The temperature stimulant is preferably a plant-derived compound from the viewpoint of the wearer's feeling of comfort. Examples of the warm feeling stimulant include capsaicin (capsicoside), capsaicin (LD 50:47mg/kg, molecular weight: 305), capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, synthetic capsaicin, etc.), capsorubin, benzyl nicotinate (LD 50:2188mg/kg, molecular weight: 213), β -butoxyethyl nicotinate, N-acyl vanillylamide, vanillylnonanoate, a polyol, paprika, capsicum tincture, capsicum extract, vanillyl nonanoate, vanillyl alcohol alkyl ether derivatives (e.g., vanillyl ethyl ether, vanillyl butyl ether (LD 50:4900mg/kg, molecular weight: 210), vanillyl pentyl ether, vanillyl hexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, resveratrol derivatives, substituted benzyl alcohol alkyl ether, vanillyl aldehyde propylene glycol acetal, ethyl vanillyl alcohol propylene glycol acetal, ginger oil extract, ginger oil (ginger oil, 50: 50mg/kg, 250mg/kg, molecular weight: 294), and a combination of these.

The solvent is not particularly limited as long as it can contain a temperature sensitive stimulant, and examples thereof include lipophilic solvents and hydrophilic solvents. The solvent is capable of dissolving, dispersing, etc., the warming stimulant, for example.

Examples of the lipophilic solvent include oils and fats, for example, natural oils (for example, fatty acid esters such as triglycerides, coconut oil, linseed oil, and tri (caprylic/capric) glyceride), hydrocarbons (for example, paraffin, for example, liquid paraffin), and the like.

Examples of the hydrophilic solvent include water and alcohol. Examples of the alcohol include lower alcohols such as methanol, ethanol, ethylene glycol and glycerol, and higher alcohols such as octanol, lauryl alcohol and myristyl alcohol.

In addition, the warming agent 26 preferably stimulates a temperature sensitive TRP channel. For example, TRPV1, which is one of temperature-sensitive TRP channels, is activated by stimulation of capsaicin, acid, or the like. Further, when TRPV1 of the wearer is activated, heat generation is caused via the sympathetic nervous system (the wearer generates heat in the body).

That is, it is preferable that the wearer is not warmed by itself at a high temperature like a disposable warmer for carrying, but is warmed without being warmed by itself at a high temperature like capsaicin or the like. In this way, the wearer can feel cool and warm without being burnt by low temperature or being burned.

Further, the effect of the temperature sensitive agent 26 is difficult to be produced unless it is in direct contact with the skin of the wearer. That is, for example, although a volatile substance such as a perfume can exhibit an effect of suppressing peripheral odor when it is a gas, the temperature sensitive agent 26 exerts its main effect by being in direct contact with the skin of the wearer after being vaporized. Therefore, the wearer can gradually feel the effect of the temperature sensitive agent 26 on the skin by bringing the temperature sensitive agent 26 into contact with the skin of the wearer through the nonwoven fabric or the like.

In the process of producing the absorbent article 1 in the pants-type form, first, the absorbent body 20 is disposed at a predetermined position of the waist member 10 in the unfolded state, and the absorbent article 1 in the unfolded state is produced. That is, the surface of the absorbent main body 20 on the non-skin side is used as a joint surface, and the joint surface is placed on and joined to a predetermined position of the lumbar member 10 in the unfolded state. That is, the lumbar member 10 is disposed to overlap the non-skin side of the absorbent main body 20 in the thickness direction.

Then, the absorbent main body 20 and the waistline member 10 in the unfolded state are folded in the longitudinal direction. That is, the absorbent main body 20 and the lumbar member 10 are folded in the longitudinal direction so that the skin side of the front lumbar member 10f and the skin side of the rear lumbar member 10b face each other with the longitudinal center line CL shown in fig. 2 as a fold.

In this way, the front joining section 10fe and the rear joining section 10be of the lumbar member 10 approach each other, and therefore the left and right front joining sections 10fe and the rear joining section 10be are joined to each other.

That is, both right and left end portions of the lumbar member 10 are joined in the longitudinal direction, and thus the lumbar front end portion 10ff and the lumbar rear end portion 10bf of the lumbar member 10 form the lumbar opening portion 1a on the upper side of the lumbar member 10.

The pants-type absorbent article 1 has the following structure: the lumbar member 10 abuts against the front side (abdomen) and the rear side (back) of the wearer's body (abuts against the waist of the wearer), and does not fall down when worn due to mainly the stretching and contraction (tightening to the body) of the lumbar member 10 in the left-right direction. Therefore, the absorbent body 20 joined to the lumbar member 10 is supported in the vertical direction by the lumbar member 10 in a state of being in contact with the crotch portion of the wearer (a portion from the crotch portion to the sacrum portion of the buttocks (buttocks) where the absorbent body 20 is in contact with the skin of the wearer when worn).

That is, the absorbent article 1 is a pants-type article having an abdomen portion, a back portion, and a crotch portion, and formed with a waist opening 1a and a pair of leg hole openings 1b, and is supported so as not to fall down when worn by the stretchable sheet 12 and the like included in the waist member 10.

The term "contact" means a state in which at least a part of a member comes into contact with a wearer, and the member comes into contact with the wearer. For example, a state in which the stretchable portion of the waistline member 10 is in contact with the wearer and the non-stretchable portion is not in contact with the wearer is a state in which the waistline member 10 is in contact with the wearer.

Further, as a joining method for joining the absorbent body 20 and the waistline member 10 and the like described above, for example, a known joining method such as an adhesive, heat sealing, ultrasonic sealing, or a combination thereof can be exemplified.

As shown in the sectional view of fig. 2, a post-treatment tape 60 is provided on the non-skin side of the waistline member 10. The finishing tape 60 is a strip-shaped member (tape member) having a substantially rectangular shape that is long in the vertical direction, one side in the vertical direction (longitudinal direction) is fixed to the lumbar member 10, and the other side in the vertical direction (longitudinal direction) has an adhesive portion. The adhesive is applied to the adhesive portion, and before the absorbent article 1 is used, a part of the post-treatment tape 60 is folded with the adhesive portion as the inside so as to protect the adhesive surface without exposing the adhesive portion to the outside.

When the used absorbent article 1 is to be discarded, the folded finishing tape 60 is pulled and stretched with respect to the absorbent article 1 that is rolled up in the vertical direction so that the absorbent body 20 is positioned inside, the adhesive portion is exposed, and the adhesive portion side is wound around the absorbent article 1. This allows the absorbent article 1 to be held in a rolled state, and the absorbent article 1 to be discarded without leakage of excrement or the like adhering to the inside (absorbent body 20) of the absorbent article 1 to the outside.

< absorbent body 20>

Next, the absorbent main body 20 will be explained using fig. 4 and 5. Fig. 4 isbase:Sub>A plan view of the absorbent main body 20, and fig. 5 isbase:Sub>A sectional view of the absorbent main body 20 as viewed frombase:Sub>A-base:Sub>A in fig. 4.

The absorbent main body 20 is a sanitary absorbent article, such as a sanitary napkin. As shown in fig. 4, the absorbent body 20 of the present embodiment is substantially rectangular in plan view, with the longitudinal direction in the extended and stretched state (i.e., the longitudinal direction of the absorbent body 20) along the vertical direction of the absorbent article 1. As shown in fig. 5, the absorbent main body 20 includes an absorbent core 22 extending in the longitudinal direction (vertical direction), a skin-side sheet 24 disposed on the skin side of the absorbent core 22, and a non-skin-side sheet 25 disposed on the non-skin side of the absorbent core 22. A temperature sensitive agent 26, which will be described later, is provided in a predetermined region of the absorbent main body 20.

The absorbent core 22 is obtained by molding a liquid absorbent material into a predetermined shape, and in the present embodiment, is formed into a substantially rectangular shape in plan view (hatched portion inclined upward to the right in fig. 4) and a convex shape in cross-section (hatched portion in fig. 5). Examples of the liquid-absorbent material include pulp fibers and other liquid-absorbent fibers containing a super absorbent polymer (so-called SAP). The absorbent core 22 may have its outer peripheral surface covered with a liquid-permeable sheet member (core wrap sheet 22 a) such as tissue paper or nonwoven fabric.

The skin side sheet 24 is a liquid-permeable sheet member that can be brought into contact with the skin of the wearer when worn, and is formed of, for example, a hydrophilic hot air nonwoven fabric, a spunbond nonwoven fabric, or the like. The skin side sheet 24 may have a structure of 2 or more layers. For example, a second sheet (not shown in fig. 5), which is a sheet member having substantially the same function and structure as the skin side sheet, may be provided on the non-skin side of the skin side sheet 24.

The non-skin side sheet 25 has a two-layer structure including a liquid-impermeable sheet 25a for preventing excretion liquid such as menstrual blood absorbed by the absorbent core 22 from being exposed to the outside, and a liquid-permeable sheet 25b disposed on the non-skin side of the liquid-impermeable sheet 25 a. As the liquid impermeable sheet 25a, for example, a resin film such as a polyethylene film or a polypropylene film is used, and as the liquid permeable sheet 25b, for example, a nonwoven fabric having flexibility is used. The skin side sheet 24 and the non-skin side sheet 25 are both sized to cover the entire absorbent core 22.

The liquid-permeable sheet 25b in the non-skin side sheet 25 has an extension portion 25c that extends outward in the width direction from the both ends 20es of the absorbent main body 20. The extension portion 25c is folded toward the skin side in the thickness direction at both ends 20es in the width direction of the absorbent main body 20 with the fulcrum 50B as a folding starting point, and is folded back toward the non-skin side at a vertex 50S located on the skin side with respect to the skin side sheet 24, thereby forming a three-dimensional gather 50 (see fig. 5). The three-dimensional gather elastic member 51 such as a rubber band extending in the longitudinal direction of the absorbent main body 20 is disposed at the apex 50S of the three-dimensional gather 50 in an extended state in the longitudinal direction, and when the absorbent article 1 is worn, the apex 50S is raised toward the skin of the wearer due to the stretchability exhibited by the three-dimensional gather elastic member 51. Thus, the three-dimensional gathers 50 function as a leakage preventing wall for suppressing side leakage of excretory fluid or the like.

The three-dimensional gathers 50 are preferably formed of the same number of nonwoven fabrics from the fulcrum 50B to the vertex 50S, and more specifically, preferably 2 or more sheets, in order to prevent the temperature sensitive agent 26 from leaking outward. Further, the nonwoven fabric of the three-dimensional gathers 50 is preferably higher in density than the nonwoven fabric of the skin side sheet 24 so that the temperature sensitive agent does not leak out.

A crotch rubber band 30 which can expand and contract in the longitudinal direction is provided between the liquid-impermeable sheet 25a and the liquid-permeable sheet 25b in the thickness direction. As shown in fig. 4 and 5, the crotch elastic band 30 is provided at the center portion in the left-right direction (width direction) of the absorbent main body 20 from the front side where the lower abdomen portion abuts to the rear side where the hip portion abuts via the crotch portion.

In addition, a plurality of folding portions 40 are formed on the skin side of the absorbent main body 20 (absorbent core 22). The hinge 40 is formed in a concave shape recessed from the skin side toward the non-skin side on the skin side of the absorbent main body 20 (absorbent core 22) as shown in fig. 5, so that the absorbent main body 20 deforms (becomes a deformed fold) along the wearer's body when the wearer wears the absorbent article 1. The concave shape of the folding portion 40 is formed by, for example, compressing the absorbent main body 20 (absorbent core 22) from the skin side, and is a high-density portion where the density of the absorbent core 22 is higher than the density around the absorbent core and is a compression groove.

A temperature sensitive agent 26 as a volatile substance is provided between the skin side sheet 24 and the absorbent core 22 in the thickness direction of the absorbent main body 20, and in the present embodiment, is applied to the non-skin side surface (the black portion in fig. 5) of the skin side sheet 24. Therefore, the temperature sensitive agent 26 is not applied to a place in contact with the skin of the wearer.

The temperature sensitive agent 26 may be provided on the skin-side surface of the absorbent core 22. That is, the temperature sensitive agent 26 may be provided on at least one of the skin-side surface of the absorbent core 22 and the non-skin-side surface of the skin side sheet 24.

As shown in fig. 4, the temperature sensitive agent 26 is applied to a pair of temperature sensitive agent application regions 26p (hatched portions inclined downward to the right in fig. 4) along the longitudinal direction, which have a predetermined dimension in the width direction (short-side direction) of the absorbent main body 20 and continue from the front end to the rear end in the longitudinal direction of the absorbent main body 20. Therefore, a non-coated region 26n where the temperature sensitive agent 26 is not coated along the longitudinal direction is provided in the center portion in the width direction of the absorbent main body 20.

The temperature sensitive agent 26 is preferably provided so as not to be mixed with an adhesive for bonding various members. For example, when the temperature sensitive agent 26 is mixed with an adhesive for bonding the crotch rubber band 30, the bonding strength of the crotch rubber band 30 is reduced, and the original elastic effect may not be exhibited. Therefore, it is preferable to use other bonding means such as the ultrasonic bonding described above instead of bonding with an adhesive in a place where the temperature sensitive agent application region 26p and the adhesive are likely to be mixed.

< method for determining Member coated with temperature-sensitive agent 26 >

Next, a method of determining the sheet member (position in the thickness direction) coated with the temperature sensitive agent 26 will be described using fig. 6. In the present embodiment, the determination is performed by sensory examination. Fig. 6 is a flowchart showing a method of determining a place to which the temperature sensitive agent 26 is applied.

The waistline member 10 of the present embodiment has been described as having a plurality of sheet members (the stretchable sheet 12, the non-stretchable sheet 14, and the 1 st sheet 15), but when a plurality of sheet members are laminated in this way, which sheet member is coated with the temperature sensitive agent 26 can be determined as follows.

First, a plurality of waistline members 10 coated with the temperature sensitive agent 26 are cut into a predetermined size, and the laminated sheet members 1 are peeled 1 by 1 to produce sample sheets (the decomposed stretchable sheet 12,

non-stretchable sheet

14, and 1 st sheet 15) (S1). In the present embodiment, each sample sheet is prepared by 60 sheets for each sample sheet.

Next, two sample sheets (for example, the 1 st sheet 15) are prepared, and two PE sheets having the same size as the sample sheets are prepared (S2).

Next, the 1 st PE sheet was superimposed on the non-skin side surface of the 1 st sample sheet (S3), and the skin side surface of the 1 st sample sheet was placed on the inner sides of the two arms of the examiner in sensory examination (S4).

In this way, the time T1 until the examiner feels the effect of temperature sensation of the temperature sensitive agent 26 of the 1 st sample sheet is measured and recorded (S5).

Next, the 2 nd PE sheet was superimposed on the skin-side surface of the 2 nd sample sheet (S6), and the non-skin-side surface of the 2 nd sample sheet was placed on the inner sides of the two arms of the examiner in sensory examination (S7).

In this way, the time T2 until the examiner feels the temperature effect of the temperature sensitive agent 26 of the 2 nd sample sheet is measured and recorded (S8).

By measuring the time T1 and the time T2, the time from when the sample sheet comes close to the inside of both arms of the examiner until the examiner feels the temperature effect of the temperature sensitive agent 26 can be confirmed for the non-skin side surface and the skin side surface of the sample sheet. Then, this confirmation is repeated 30 times (steps S2 to S8), and the average time of T1 and T2 is calculated and compared (S9).

That is, the average time T1a until the examiner feels the temperature-sensitive effect on the skin side of the sample sheet and the average time T2a until the examiner feels the temperature-sensitive effect on the non-skin side of the sample sheet are compared, and the shorter one is set as the application part (application surface) closer to the temperature-sensitive agent 26. Specifically, if T1a is shorter than T2a, it can be determined that the skin-side surface of the sample sheet is close to the application surface of the temperature sensitive agent 26, and if T2a is shorter than T1a, it can be determined that the non-skin-side surface of the sample sheet is close to the application surface of the temperature sensitive agent 26.

Then, the sample piece (the decomposed stretchable sheet 12,

non-stretchable sheet

14, and 1 st sheet 15) is identified for all the sample pieces. That is, the average time required for the examiner to feel the temperature effect of the temperature sensitive agent 26 is calculated for the skin-side surface and the non-skin-side surface of each of the decomposed stretch sheet 12,

non-stretch sheet

14, and 1 st sheet 15. By comparing the calculation results in this way, the location where the temperature sensitive agent 26 is applied can be specified. That is, the location where the average time taken for the examiner to feel the temperature effect of the temperature sensitive agent 26 is the shortest (for example, the non-skin side surface of the 1 st sheet 15) can be determined as the location where the temperature sensitive agent 26 is applied.

In the present embodiment, when the total of T1a and the total of T2a of the respective sample sheets (the decomposed stretchable sheet 12, the non-stretchable sheet 14, and the 1 st sheet 15) are compared, the total of T1a is short. In other words, it can be said that the total amount (transfer amount) of the temperature sensitive agents 26 contacted (transferred) from the skin side of each sample piece to the skin of the examinee is larger than the total amount (transfer amount) of the temperature sensitive agents 26 contacted (transferred) from the non-skin side to the skin of the examinee in the same period (the temperature sensitive effect is felt earlier, so the temperature sensitive effect is felt in a longer period).

The vaporized temperature sensitive agent 26 also moves in the vertical direction and the lateral direction in the interior of the absorbent article 1 (the space surrounded by the sheet member). Therefore, in the region where the temperature sensitive agent 26 is not applied, the temperature sensitive agent 26 may be detected by sensory inspection. In this case, whether or not the region is coated with the temperature sensitive agent 26 can be determined by comparing the average time until the examiner feels the temperature sensitive effect of the temperature sensitive agent 26.

The method of determining the application position based on the sensory test is preferably performed in a portion of the absorbent main body 20 that does not overlap the temperature sensitive agent application region 26p (a portion excluding a temperature sensitive agent overlapping region 26W described later, see fig. 7 and 8).

< specific arrangement of temperature sensitive agent 26 for waist member 10 >

Next, with reference to fig. 7 and 8, the relationship between the temperature sensitive agent 26 and the other members at which position of the lumbar member 10 is disposed will be described. Fig. 7 is a plan view illustrating the arrangement of the temperature sensitive agent 26 provided in the absorbent article 1, and fig. 8 is a schematic sectional view of the absorbent article 1 as viewed from B-B in fig. 7. In this term, the temperature sensitive agent 26 refers to the temperature sensitive agent 26 of the lumbar member 10 and is the temperature sensitive agent 26 applied to the lumbar application region 26D.

When the temperature sensitive agent 26 is provided on the inner surface (skin side surface) of the lumbar member 10, the components of the temperature sensitive agent 26 that volatilize come into direct contact with the skin of the wearer, and thus there is a possibility that excessive irritation may be given to the skin of the wearer, or skin problems such as rash may occur. On the other hand, when the temperature sensitive agent 26 is provided on the outer surface (non-skin side surface) of the lumbar member 10, the amount of volatilization of the temperature sensitive agent 26 may increase, and the effect of the temperature sensitive agent 26 may be difficult to be sustained.

In contrast, as shown in fig. 8, the temperature sensitive agent 26 of the present embodiment is not provided on the inner surface or the outer surface of the lumbar member 10, but is provided on the non-skin side of the 1 st sheet 15 disposed on the skin-most side of the lumbar member 10 and on the skin-side of the non-stretchable sheet 14 disposed on the non-skin side.

Further, by disposing the temperature sensitive agent 26 at this position, when the waistline member 10 (stretchable sheet 12) is stretched and pressed against the skin of the wearer, the temperature sensitive agent 26 can be suppressed from directly contacting the skin of the wearer, and therefore, the occurrence of skin problems such as redness, itching, or rash on the skin of the wearer can be suppressed. The temperature sensitive agent 26 is disposed so as to be sandwiched between the 1 st sheet 15 and the non-stretchable sheet 14 from both sides in the thickness direction, and is not exposed to the atmosphere, and therefore excessive volatilization is suppressed. Therefore, the effect of the temperature sensitive agent 26 can be sustained. That is, the pants-type absorbent article 1 provided with the temperature sensitive agent 26 which has a long lasting effect and is less likely to cause excessive irritation to the skin of the wearer can be provided.

Both the 1 st sheet 15 and the non-stretchable sheet 14 are nonwoven fabrics, and the fiber density of the 1 st sheet 15 is lower than that of the non-stretchable sheet 14.

The temperature sensitive agent 26 sandwiched between the 1 st sheet 15 and the non-stretchable sheet 14 of the waist member 10 from both sides in the thickness direction tends to leak to the outside through the 1 st sheet 15 or the non-stretchable sheet 14 when vaporized in the sandwiched internal space. That is, the gasified temperature sensitive agent 26 of the waistline member 10 attempts to move to the skin side of the wearer through the first sheet 15 or to move to the atmosphere through the non-stretchable sheet 14.

In this case, as the fiber density of the nonwoven fabric is smaller, the voids formed by the fibers constituting the nonwoven fabric are more easily formed to be larger, and therefore the vaporized temperature sensitive agent 26 is easily penetrated. That is, since the smaller the fiber density of the nonwoven fabric, the more easily the temperature sensitive agent 26 passes through the nonwoven fabric, the smaller the fiber density of the 1 st sheet 15 is than the fiber density of the non-stretchable sheet 14, and therefore, the more the temperature sensitive agent 26 passes through the 1 st sheet 15 than the temperature sensitive agent 26 passes through the non-stretchable sheet 14 can be. This promotes the movement of temperature sensitive agent 26 toward the skin of the wearer, improves the temperature sensitive effect of the wearer, and suppresses the release of temperature sensitive agent 26 into the atmosphere, thereby enabling the effect of temperature sensitive agent 26 to be sustained for a long period of time.

As shown in fig. 7, the temperature sensitive agent 26 is provided on the front waist member 10f. Since the front waist member 10f comes into contact with the lower abdomen of the wearer when the absorbent article 1 is worn, the temperature sensitive agent 26 is provided in this location, and thus the temperature sensitive effect is easily exerted on the lower abdomen of the wearer. Furthermore, by warming the lower abdomen of the wearer, for example, an effect of reducing the physiological pain and chill symptoms of the wearer can be expected.

As shown in fig. 7, the temperature sensitive agent 26 is provided on the rear waist member 10b. Since the rear waist member 10b comes into contact with the sacrum of the wearer when the absorbent article 1 is worn, the temperature sensitive agent 26 is provided at this location, and thus the temperature sensitive effect is easily exerted on the sacrum of the wearer. Further, by warming the sacrum portion of the wearer, for example, an effect of reducing physiological pain and chill symptoms of the wearer can be expected.

The total amount of the temperature sensitive agent 26 provided on the front waist member 10f is larger than the total amount of the temperature sensitive agent 26 provided on the rear waist member 10b. Therefore, a greater warming effect can be imparted to the wearer at the lower abdomen portion than the sacrum portion of the wearer.

As described above, by warming the lower abdomen and sacrum of the wearer, it is expected to alleviate the physiological pain and chill symptoms of the wearer, but the subcutaneous fat in the lower abdomen is thick, and the wearer does not feel a feeling of warmth. In addition, supine is more common than prone for sleeping positions when the wearer is sleeping. In addition, in the supine position, the effect of the temperature sensitive agent 26 is easily exerted because a body pressure is exerted in the vicinity of the sacrum portion of the wearer, but the effect of the temperature sensitive agent 26 is hardly exerted in the vicinity of the lower abdomen of the wearer, compared with the vicinity of the sacrum portion. Therefore, the total amount (coating amount) of the temperature sensitive agent 26 is larger in the lower abdomen than in the sacrum portion of the wearer, and the same temperature sensitive effect as in the sacrum portion can be given to the lower abdomen of the wearer during sleep, and an effect of further reducing the physiological pain of the wearer can be expected. In addition, the total amount of the temperature sensitive agent 26 can be measured by using the aforementioned gas chromatography.

As shown in fig. 8, a temperature sensitive agent 26 is provided on the non-skin side of the 1 st sheet 15 and on the skin side of the stretchable sheet 12.

In this state, the vaporized temperature sensitive agent 26 must pass through the stretchable sheet 12 and the non-stretchable sheet 14 in order to be discharged into the atmosphere while moving to the non-skin side. In general, the stretchable sheet 12 is a film, and the 1 st sheet 15 and the non-stretchable sheet 14 are both nonwoven fabrics. That is, the stretchable sheet 12 has lower air permeability than the 1 st sheet 15 and the non-stretchable sheet 14. The stretchable sheet 12 may be a stretchable nonwoven fabric containing polyurethane fibers. However, since the stretch sheet 12 contains polyurethane fibers, the air permeability is inferior to that of the non-stretch sheet 14.

Therefore, by providing the stretchable sheet 12 on the non-skin side of the temperature sensitive agent 26, the release of the vaporized temperature sensitive agent 26 into the atmosphere can be suppressed, and the effect of the temperature sensitive agent 26 can be sustained for a long period of time.

Further, the stretchable sheet 12 can be perforated to such an extent that it does not break due to stretching, and the like can be used as a ventilation opening for the vaporized temperature sensitive agent 26. That is, by providing the stretchable sheet 12 with the ventilation opening for the temperature sensitive agent 26, it is easy to control (adjust) the degree to which the temperature sensitive agent 26 is moved to the skin side or the non-skin side.

As shown in fig. 8, a temperature sensitive agent 26 is provided on the non-skin surface of the 1 st sheet 15. The position in the thickness direction where the temperature sensitive agent 26 is provided is a position not in contact with the skin of the wearer and is closest to the skin of the wearer. That is, by providing the temperature sensitive agent 26 on the non-skin surface of the 1 st sheet 15, the temperature sensitive agent 26 can be prevented from directly contacting the skin of the wearer, and the temperature sensitive effect can be imparted to the wearer to the maximum extent.

As shown in fig. 8, at least a part of the 1 st sheet 15 is disposed to overlap the skin side of the absorbent main body 20, and a temperature sensitive agent 26 is provided between the non-skin side surface of the 1 st sheet 15 and the skin side surface of the absorbent main body 20 in the region where the 1 st sheet 15 overlaps the absorbent main body 20.

Therefore, the temperature sensitive agent 26 (the temperature sensitive agent 26 on the lower side than the upper end 20et of the absorbent main body 20) must pass through at least the skin side sheet 24, the non-skin side sheet 25 (the liquid-impermeable sheet 25a and the liquid-permeable sheet 25 b), and the non-stretchable sheet 14 of the absorbent main body 20 in order to move to the non-skin side and move into the atmosphere.

That is, as compared with the temperature sensitive agent 26 provided in the region not overlapping the absorbent main body 20 (the temperature sensitive agent 26 on the upper side than the upper end 20et of the absorbent main body 20) when viewed in the thickness direction, the temperature sensitive agent 26 is not discharged to the atmosphere if it passes through at least the skin side sheet 24 and the non-skin side sheet 25 (the liquid-impermeable sheet 25a and the liquid-permeable sheet 25 b) of the absorbent main body 20. Therefore, in the region where the 1 st sheet 15 and the absorbent body 20 overlap, by providing the temperature sensitive agent 26 between the non-skin side surface of the 1 st sheet 15 and the skin side surface of the absorbent body 20, it is possible to suppress the discharge of the vaporized temperature sensitive agent 26 into the atmosphere, and to maintain the effect of the temperature sensitive agent 26 for a long period of time.

Further, at least a part of the 1 st sheet 15 overlaps the absorbent core 22 when viewed in the front-rear direction, and a temperature sensitive agent 26 is provided between the non-skin side surface of the 1 st sheet 15 and the skin side surface of the absorbent main body 20 in a region where the 1 st sheet 15 overlaps the absorbent core 22.

Therefore, the temperature sensitive agent 26 (the temperature sensitive agent 26 on the lower side than the upper end 22et of the absorbent core 22) must pass through at least the skin side sheet 24, the absorbent core 22, the non-skin side sheet 25 (the liquid-impermeable sheet 25a and the liquid-permeable sheet 25 b), the stretchable sheet 12, and the non-stretchable sheet 14 of the absorbent main body 20 in order to move to the non-skin side and move into the atmosphere.

That is, as compared with the temperature sensitive agent 26 provided in the region not overlapping with the absorbent core 22 (the temperature sensitive agent 26 on the upper side than the upper end 22et of the absorbent core 22) as viewed in the thickness direction, the temperature sensitive agent 26 is not discharged to the atmosphere if it passes through the absorbent core 22 at least excessively. Therefore, by providing the temperature sensitive agent 26 between the non-skin side surface of the 1 st sheet 15 and the skin side surface of the absorbent body 20 in the region where the 1 st sheet 15 and the absorbent core 22 overlap, it is possible to further suppress the discharge of the vaporized temperature sensitive agent 26 into the atmosphere, and to further maintain the effect of the temperature sensitive agent 26 for a long period of time.

The absorbent body 20 is provided with a temperature sensitive agent 26 (temperature sensitive agent application region 26 p), and has a portion (hatched portion shown in fig. 7, hereinafter also referred to as a temperature sensitive agent overlapping region 26W) where the temperature sensitive agent 26 (temperature sensitive agent application region 26 p) provided in the absorbent body 20 and the temperature sensitive agent 26 (waistline application region 26D) provided in the waistline member 10 overlap each other when viewed in the front-back direction.

In the temperature sensitive agent overlapping region 26W, the temperature sensitive agent 26 in the waistline application region 26D and the temperature sensitive agent 26 in the temperature sensitive agent application region 26p are provided, and two layers of the temperature sensitive agents 26 are provided, as viewed in the thickness direction. That is, the temperature effect is superimposed on the wearer as compared with the region where 1 layer is provided. That is, the wearer feels a greater temperature effect at the portion where the temperature sensitive agent overlapping region 26W abuts when wearing the absorbent article 1.

The temperature sensitive agent overlapping region 26W is provided in a place in contact with the lower abdomen and the sacrum, respectively. That is, the greater temperature-sensitive effect of the temperature-sensitive agent overlapped region 26W is likely to be exhibited in the lower abdomen and the sacrum, and further alleviation of physiological pain and the like of the wearer can be expected.

As shown in fig. 8, the stretchable sheet 12 is provided between the 1 st sheet 15 and the non-stretchable sheet 14, is located on the non-skin side of the temperature sensitive agent 26, and has a portion where the temperature sensitive agent 26 and the stretchable sheet 12 overlap each other when viewed in the thickness direction (front-back direction).

The stretchable sheet 12 is made of a material through which the temperature sensitive agent 26 is difficult to pass, and therefore, the temperature sensitive agent 26 is prevented from passing through the non-skin side of the waist member 10 at a portion overlapping with the stretchable sheet 12. Therefore, the temperature sensitive agent 26 is less likely to leak to the non-skin side in the thickness direction and be discharged into the atmosphere, and the effect of the temperature sensitive agent 26 can be easily sustained for a long time.

Specifically, the stretchable sheet 12 is preferably a film. In the present embodiment, the non-stretchable nonwoven fabric is formed of PP (polypropylene) or PE (polyethylene), and the stretchable nonwoven fabric is formed of polyurethane. The stretchable sheet 12 contains a polyurethane component, and therefore the temperature sensitive agent 26 is difficult to be discharged into the atmosphere and is likely to leak to the skin side.

As shown in fig. 8, a part of the post-treatment tape 60 of the waistline member 10 overlaps with the temperature sensitive agent 26 when viewed in the thickness direction, and the overlapping part is provided on the non-skin side in the thickness direction with respect to the temperature sensitive agent 26.

The post-treatment tape 60 is difficult to pass the temperature sensitive agent 26 as in the stretchable sheet 12, and therefore, the temperature sensitive agent 26 is prevented from passing through the non-skin side of the waist member 10 at the portion overlapping with the post-treatment tape 60. Therefore, the temperature sensitive agent 26 is less likely to leak to the non-skin side in the thickness direction and be discharged into the atmosphere, and the effect of the temperature sensitive agent 26 can be easily sustained for a long time. The post-treatment tape 60 is preferably Z-shaped, and this shape can suppress a decrease in the adhesive strength of the surface that functions as the post-treatment due to the temperature sensitive agent 26.

< method for producing absorbent article 1 >

Next, a method for manufacturing the absorbent article 1 will be briefly described. Fig. 9 is a flowchart of each process of manufacturing the absorbent article 1. Fig. 10 is a schematic diagram illustrating a manufacturing apparatus 100 for manufacturing the absorbent article 1. In addition, in fig. 9 and 10, in order to explain the present invention easily, a manufacturing apparatus in which the absorbent main body 20 is supplied in a form in which the absorbent main body 20 is completed and the absorbent main body 20 is omitted is illustrated (hereinafter, explanation of the manufacturing method of the absorbent main body 20 is also omitted).

The manufacturing apparatus 100 shown in fig. 10 continuously manufactures the absorbent articles 1 by sequentially performing the steps (S101 to S110) shown in fig. 9. The manufacturing apparatus 100 includes a conveying mechanism 110, an ultrasonic bonding mechanism 120, an absorbent body bonding mechanism 130, a temperature sensitive agent applying mechanism 140, an adhesive agent applying mechanism 150, a folding mechanism 160, a 1 st sheet bonding mechanism 170, a leg-surrounding portion forming mechanism 180, a pants-type forming mechanism 190, and a cutting mechanism 200.

First, a conveyance step of conveying various base materials such as the non-stretchable sheet 14 constituting the absorbent article 1 in a predetermined conveyance direction is performed (S101). In the manufacturing apparatus 100, the conveyance direction is a direction along the left-right direction of the absorbent article 1. In the conveying step, the non-stretchable sheet continuous body 14L in a state where the non-stretchable sheet 14 is continuous in the conveying direction (left-right direction) and the stretchable sheet continuous body 12L (both continuous bodies of the front stretchable sheet 12f and the rear stretchable sheet 12 b) in a state where the stretchable sheet 12 is continuous in the conveying direction (left-right direction) are conveyed from the upstream side to the downstream side in the conveying direction at a predetermined conveying speed by the conveying mechanism 110 (the stretchable sheet continuous body 12L is conveyed in an extended state). While the respective base materials are being conveyed, the steps S102 to S110 are performed to manufacture the absorbent article 1.

First, an ultrasonic bonding step is performed in which the non-skin side surface of the continuous non-stretchable sheet body 12L conveyed in the conveying direction is superposed on the skin side surface of the continuous non-stretchable sheet body 14L conveyed in the conveying direction, and both are bonded to each other (S102). In the ultrasonic bonding step, the ultrasonic bonding mechanism 120 provided at a predetermined position in the conveyance direction applies ultrasonic vibration and pressure to the predetermined position of the non-stretchable sheet continuous body 14L and the stretchable sheet continuous body 12L, and ultrasonically bonds the portions, thereby bonding the non-stretchable sheet continuous body 14L and the stretchable sheet continuous body 12L.

The non-stretchable continuous sheet 14L in the ultrasonic bonding step is the non-stretchable continuous sheet 14L before the 1 st sheet 15 is folded back, and the portion of the 1 st sheet 15 is in a state of being stretched upward from the upper end 10et of the waistline member 10 shown in fig. 2. That is, the continuous non-stretchable sheet 14L is conveyed in the conveying direction without folding the 1 st sheet 15, and this state continues until the 1 st sheet 15 is folded in the folding step (S106) described later.

Next, an absorbent body joining step is performed in which the absorbent body 20 is joined to a predetermined position on the skin surface side of the elastic sheet continuous body 12L and the non-elastic sheet continuous body 14L (hereinafter, also referred to as a sheet member continuous body) that have been ultrasonically joined (S103). In the absorber joining step, the absorbent body 20 is joined to the sheet member continuous body by the joining roller 131 holding the absorbent body 20.

The plurality of absorbent bodies 20 are held on the outer peripheral surface of the joining roller 131 at predetermined intervals so that the width direction of the absorbent bodies 20 is along the conveyance direction (so that the longitudinal direction of the absorbent bodies 20 is along the direction penetrating the paper surface of fig. 10). Then, the absorbent main body 20 is held so that the skin side surface thereof comes into contact with the outer peripheral surface of the joining roller 131, and an adhesive is applied to the non-skin side surface of the absorbent main body 20.

Then, the joining roller 131 in this state is rotated at a predetermined speed (speed at which the absorbent main body 20 is placed on the sheet member continuous body at a product pitch), and the holding of the absorbent main body 20 by the joining roller 131 is released at the timing when the skin-side surface of the sheet member continuous body and the non-skin-side surface of the absorbent main body 20 are in contact. That is, the absorbent main bodies 20 are placed on the sheet member continuum at a product pitch. Then, at the same time as this placement, the joining rollers 131 provided on the skin side and the non-skin side press the absorbent main body 20 against the sheet member continuous body in a sandwiched manner, thereby joining the absorbent main body 20 to the sheet member continuous body.

Next, a temperature sensitive agent application step (volatile substance application step) of applying a temperature sensitive agent 26 (volatile substance) to the skin-side surface of the 1 st sheet 15 portion of the continuous non-stretchable sheet 14L conveyed in the conveyance direction (the non-skin-side surface of the 1 st sheet 15 after the 1 st sheet 15 is folded back) is performed (S104). In the temperature sensitive agent application step, the liquid temperature sensitive agent 26 is sprayed or directly applied from the temperature sensitive agent application means 140 provided at a predetermined position in the conveyance direction onto the skin-side surface of the 1 st sheet 15 portion of the non-stretchable sheet continuous body 14L (the non-skin-side surface of the 1 st sheet 15 after the 1 st sheet 15 is folded back), thereby forming the waist application region 26D (the front waist application region 26Df and the rear waist application region 26 Db).

Next, an adhesive application step (S105) of applying an adhesive to the skin-side surface of the 1 st sheet 15 portion of the continuous non-stretchable sheet 14L (the non-skin-side surface of the 1 st sheet 15 after the 1 st sheet 15 is folded back) conveyed in the conveyance direction is performed. In the adhesive application step, an adhesive such as a Hot Melt Adhesive (HMA) is sprayed or directly applied from the adhesive application means 150 provided on the downstream side of the temperature sensitive adhesive application means 140 to the skin-side surface of the 1 st sheet 15 portion of the non-stretchable sheet continuous body 14L (the non-skin-side surface of the 1 st sheet 15 after the 1 st sheet 15 is folded) in the conveyance direction, thereby forming an adhesive region (not shown).

In the manufacturing apparatus 100 of the present embodiment, the temperature sensitive agent application step (S104) is performed, and then the adhesive application step (S105) is performed. That is, the adhesive is applied immediately before the folding step (S106) of folding the 1 st sheet 15 and the 1 st sheet joining step (S107) described below are performed, and therefore, it is easy to suppress occurrence of poor adhesion due to drying of the adhesive during conveyance. After the waistline coating region 26D (the front waistline coating region 26Df and the rear waistline coating region 26 Db) on which the temperature sensitive agent 26 is coated is formed, the bonding region can be formed so as not to overlap with the waistline coating region 26D (the front waistline coating region 26Df and the rear waistline coating region 26 Db). This can suppress mixing of the oil components contained in the temperature sensitive agent 26 and the adhesive, and can effectively suppress deterioration of the temperature sensitive agent 26 and the adhesive and make it difficult to exhibit their respective functions.

In order to suppress the deterioration of the temperature sensitive agent 26 and the adhesive, the region coated with the temperature sensitive agent 26 and the region coated with the adhesive do not overlap each other when viewed in the thickness direction of the absorbent article 1 on the production line. That is, in the process of manufacturing the pants-type absorbent article 1, the temperature sensitive agent 26 and the adhesive are applied so as not to overlap each other when the pants-type absorbent article 1 is viewed in the thickness direction.

Next, a folding step (S106) of folding the 1 st sheet 15 extending upward from the upper end 10et of the lumbar member 10 is performed. The folding mechanism 160 folds the portions of the 1 st sheet 15 extending toward the front side and the back side of the non-stretchable sheet continuous body 14L continuously downward in the vertical direction with the upper ends 10et of the front side and the back side as folds. At this time, the temperature sensitive agent 26 (waistline application region 26D) and the adhesive agent provided in the preceding step are folded back so as to face the skin-side surface of the stretchable sheet continuous body 12L and the skin-side surface of the joined absorbent main body 20.

Next, a 1 st sheet joining step (S107) of joining the 1 st sheet 15 to the stretchable sheet continuous body 12L and the absorbent main body 20 is performed. In the 1 st sheet joining step, the 1 st sheet 15 and the stretchable sheet continuous body 12L and the 1 st sheet 15 and the absorbent main body 20 are compressed and joined in the thickness direction by the pressure roller 171 of the 1 st sheet joining mechanism 170.

Next, a leg hole forming step (S108) of forming the leg hole opening 1b in the spread state on the various substrates being conveyed is performed. In the leg-surrounding forming process, the leg-surrounding portion forming mechanism 180 forms a predetermined hole shape for forming the leg-surrounding opening portions 1b between the absorbent bodies 20 adjacent in the conveying direction joined at the product pitch.

Next, a pants-type forming step (S109) of forming the conveyed various substrates into pants-type articles is performed. In the pants-type forming step, the pants-type forming mechanism 190 folds the waist member 10 in two with the longitudinal center line CL (see fig. 2) as a fold line to form the joint portions 10fe and 10be, thereby forming the pants-type absorbent articles 1 which are continuous in the conveying direction.

Then, a cutting step (S110) of cutting the conveyed continuous pants-type absorbent articles 1 into individual pants-type absorbent articles 1 is performed. The cutter roller 201 provided in the cutting mechanism 200 cuts a predetermined position in the conveyance direction of the pants-type absorbent articles 1 that are continuous in the conveyance direction by a predetermined length. Thereby, each pant-type absorbent article 1 was manufactured.

In the case where the 1 st sheet 15 is a sheet member independent from the non-stretchable sheet, the folding-back step (S106) described above is not performed. In this case, while the 1 st continuous body 15L in which the 1 st sheet 15 is continuous in the conveyance direction is conveyed in the conveyance direction by the conveyance mechanism 110, the temperature sensitive agent 26 is applied to the non-skin side surface of the 1 st continuous body 15L (S104), and then the adhesive is applied to the non-skin side surface (S105). Then, the 1 st continuous sheet 15L is laminated on the non-stretchable continuous sheet 14L (and the absorbent main body 20) so that the skin-side surface of the non-stretchable continuous sheet 14L to which the absorbent main body 20 is attached and the non-skin-side surface of the 1 st continuous sheet 15L face each other, and the 1 st sheet joining step (S107) is performed. The other steps are the same as those described in fig. 9.

= other embodiment = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = the other embodiment

The above-described embodiments are intended to facilitate the understanding of the present invention, and are not intended to limit the present invention. It is needless to say that the present invention can be modified and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

In the above-described embodiment, wrinkles extending in the vertical direction are formed on the surfaces of the 1 st sheet 15 and the non-stretchable sheet 14 in a natural state, and the average of the widths in the horizontal direction of each wrinkle formed in the 1 st sheet 15 is smaller than the average of the widths in the horizontal direction of each wrinkle formed in the non-stretchable sheet 14, but the present invention is not limited thereto, and the average of the widths in the horizontal direction of each wrinkle formed in the 1 st sheet 15 may be equal to or larger than the average of the widths in the horizontal direction of each wrinkle formed in the non-stretchable sheet 14.

Fig. 11 is a schematic view of the direction C-C of fig. 8, showing the width dimension in the left-right direction of the gathers formed in the non-stretchable sheet 14 and the 1 st sheet 15, and showing a part of each gather.

With the former absorbent article 1, the average value of the dimensions of the width dimensions 15L1, 15L2, 15L3, 15L4, and 15L5 in the left-right direction of the gathers of the first sheet 15 shown in fig. 11 is smaller than the average value of the dimensions of the width dimensions 14L1, 14L2, 14L3, 14L4, and 14L5 in the left-right direction of the gathers of the non-stretchable sheet 14. Further, the temperature sensitive agent 26 is easily penetrated when the width dimension in the left-right direction of the wrinkle formed in the sheet member is small.

Therefore, more of the temperature sensitive agent 26 passes through the first sheet 15 than the temperature sensitive agent 26 passes through the non-stretchable sheet 14. Therefore, in the case of the former absorbent article 1, the temperature sensitive agent 26 has a quick-acting property, and can easily cause irritation to the skin of the wearer.

On the other hand, with the latter absorbent article, the average value of the dimensions of the width dimensions 15L1, 15L2, 15L3, 15L4, and 15L5 in the left-right direction of the gathers of the 1 st sheet 15 shown in fig. 11 is equal to or greater than the average value of the dimensions of the width dimensions 14L1, 14L2, 14L3, 14L4, and 14L5 in the left-right direction of the gathers of the non-stretchable sheet 14.

With this absorbent article, the 1 st sheet 15 inhibits the vaporized temperature sensitive agent 26 from passing through as compared with the absorbent article 1 of the former, and therefore, the arrival of the temperature sensitive agent 26 at the skin of the wearer is delayed. Therefore, in the case of the latter absorbent article, the effect of the temperature sensitive agent 26 can be sustained for a long period of time.

In the above embodiment, the temperature sensitive agent 26 is used as an example of the volatile substance, but the temperature sensitive agent 26 is not limited thereto, and for example, a cold sensitive agent may be used. When the cooling agent is used, the discomfort caused by stuffiness and stickiness of the wearer can be reduced.

That is, with the absorbent article 1 including the cooling agent (temperature-sensitive agent 26), the volatile substance can improve the cooling effect (temperature-sensitive effect) of the wearer as compared with the case other than the cooling agent (temperature-sensitive agent 26).

The mechanism (mechanism) by which the aforementioned temperature sensitive agent 26 is vaporized to exert its effect is the same as for the cooling agent and the fragrance described later, and therefore, the description thereof is omitted.

Examples of the psychrophilic agents include menthol (e.g., l-menthol) and derivatives thereof (e.g., menthyl lactate), methyl salicylate, camphor, essential oils derived from plants (e.g., mint and eucalyptus), and the like. In addition, the psychrotolerant preferably stimulates a temperature-sensitive TRP channel, as in the case of the warming agent 26.

In the above embodiment, the temperature sensitive agent 26 is used as an example of the volatile substance, but the temperature sensitive agent 26 is not limited thereto, and for example, a perfume may be used. The fragrance may be used instead of the temperature sensitive agent 26, or may be used together with the temperature sensitive agent 26. As the perfume, the same perfumes as those conventionally used in the art can be used.

In addition, in the case of a green herbal flavor (green herbal fragrance), in particular, the flavor can safely and easily alleviate particularly psychologically unpleasant symptoms without causing physical irritation to the body and without requiring oral administration. In addition, comfort can be obtained.

Green herbal-type aroma is a note that contains either green (green note) or herbal (herbal note). The green fragrance refers to the fresh fragrance of grass and tender leaves. The herbal aroma (herbal note) is a note characterized by the aroma of medicinal plants in nature using herbs.

The perfume composition containing a perfume having a green herbal-type fragrance preferably contains 1 or more perfumes selected from cis-3-hexenol, cis-3-hexenol formate, cis-3-hexenol acetate, cis-3-hexenol propionate, cis-3-hexenol butyrate, trans-2-hexenal, trans-2-hexenol acetate, hexyl acetate, methylphenylacetate, 2-methyl-3- (3, 4-methylenedioxyphenyl) -propanal (name of IFF corporation, helional), 3 (4) - (5-ethylbicyclo [2, 1] heptyl-2) -cyclohexanol, allyl 2-pentoxyglycolate (name of IFF corporation, galbanum ester), 4-methyl-3-decene-5-ol (name of Givaudan corporation, methyldecenol), hexanal, 2, 4-dimethyl-3-cyclohexenylformaldehyde (name of IFF corporation, ligustral aldehyde), and phenylacetaldehyde. Commercially available perfumes can be used. Fragrances containing them produce mainly green fragrances.

The perfume composition containing perfume with green herbaceous fragrance preferably further contains 1 or more than 2 perfumes selected from l-menthol, 1, 8-cineole, methyl salicylate, citronellal, camphor, borneol, isobornyl acetate, terpinyl acetate, eugenol, anethole, 4-methoxybenzyl methanol and artemisinine. The fragrances containing them mainly produce a green fragrance.

In addition, even in the case of using a perfume, the mechanism (mechanism) of the effect of vaporization is the same as that of the temperature sensitive agent 26, and therefore, the description of the perfume is omitted.

Claims

1. A pants-type absorbent article having a vertical direction and a horizontal direction intersecting each other, comprising:

an absorbent body having an absorbent core that absorbs liquid; and

a waist member overlapped and joined to a non-skin side of the absorbent main body and stretchable in the left-right direction, characterized in that,

the waist member is provided with a plurality of sheets stacked in the thickness direction,

the plurality of sheets include a 1 st sheet disposed at a position closest to the skin side and a 2 nd sheet disposed at a position closest to the non-skin side,

a volatile material is provided on the waist member at a position closer to the non-skin side than the 1 st panel and closer to the skin side than the 2 nd panel,

at least a part of the first sheet 1 is disposed on the skin side of the absorbent main body in an overlapping manner,

the volatile material is provided between a non-skin side surface of the 1 st sheet and a skin side surface of the absorbent main body in a region where the 1 st sheet and the absorbent main body overlap.

2. A pant-type absorbent article according to claim 1,

the volatile substance is a temperature sensitive agent or a cold sensitive agent for stimulating a temperature sensitive TRP channel.

3. A pant-type absorbent article according to claim 1 or 2,

the 1 st and 2 nd sheets are both non-woven fabrics,

the fiber density of the 1 st sheet is less than the fiber density of the 2 nd sheet.

4. A pant-type absorbent article according to claim 1 or 2,

the waist member has an abdominal-side waist member abutting against an abdominal side of the wearer,

the volatile material is disposed on the ventral lumbar member.

5. A pant-type absorbent article according to claim 4,

the waist member has a back-side waist member abutting against the back side of the wearer,

the volatile material is disposed on the back side waist member.

6. A pant-type absorbent article according to claim 5,

the total amount of the volatile material provided on the abdominal-side waist member is greater than the total amount of the volatile material provided on the back-side waist member.

7. A pant-type absorbent article according to claim 1 or 2,

the pants-type absorbent article has a 3 rd sheet disposed between the 1 st sheet and the 2 nd sheet,

the volatile material is provided on the non-skin side of the 1 st sheet and on the skin side of the 3 rd sheet.

8. A pant-type absorbent article according to claim 1 or 2,

the volatile material is provided on the non-skin surface of the first sheet 1.

9. A pant-type absorbent article according to claim 1 or 2,

at least a portion of the 1 st sheet overlaps the absorbent core when viewed in the front-to-rear direction,

the volatile material is provided between the non-skin side surface of the 1 st sheet and the skin side surface of the absorbent main body in a region where the 1 st sheet and the absorbent core overlap.

10. A pant-type absorbent article according to claim 1 or 2,

the volatile material is provided in the absorbent body,

has a portion where the volatile material provided in the absorbent main body and the volatile material provided in the waist member overlap when viewed in the front-rear direction.

11. A pant-type absorbent article according to claim 1 or 2,

in a natural state, wrinkles along the up-down direction are formed on the surfaces of the 1 st sheet and the 2 nd sheet,

an average of widths in the left-right direction of each wrinkle formed in the 1 st sheet is smaller than an average of widths in the left-right direction of each wrinkle formed in the 2 nd sheet.

12. A pant-type absorbent article according to claim 1 or 2,

the average of the widths in the left-right direction of the respective gathers formed in the 1 st sheet is equal to or greater than the average of the widths in the left-right direction of the respective gathers formed in the 2 nd sheet.

13. A pant-type absorbent article according to claim 1 or 2,

the waist member has a post-treatment belt for holding the pants-type absorbent article in a rolled state when the pants-type absorbent article after use is discarded,

having a portion where the aftertreatment tape and the volatile material overlap when viewed in the front-to-back direction,

the post-treatment tape is disposed on the non-skin side of the volatile material in the thickness direction.

14. A pants-type absorbent article having a vertical direction and a horizontal direction intersecting each other, comprising:

an absorbent body having an absorbent core that absorbs liquid; and

the waist member has a stretchable film stretchable in the left-right direction,

having a portion where the stretchable membrane and the volatile material overlap when viewed in the front-rear direction,

the stretchable film is disposed on a non-skin side of the volatile material in a thickness direction.

15. A pant-type absorbent article according to claim 14,

16. A method for manufacturing a pants-type absorbent article having an absorbent main body and a waist member superposed and joined to a non-skin side of the absorbent main body, the method being characterized in that,

comprises the following steps:

a conveying step of conveying a 1 st sheet disposed at a position closest to a skin side of the lumbar member and a 2 nd sheet disposed at a position closest to a non-skin side of the lumbar member in a predetermined conveying direction;

a volatile substance application step of applying a volatile substance to at least one of the non-skin side surface of the 1 st sheet and the skin side surface of the 2 nd sheet;

an adhesive application step of applying an adhesive to at least one of a non-skin side surface of the 1 st sheet and a skin side surface of the 2 nd sheet; and

a sheet joining step of laminating and joining the non-skin-side surface of the 1 st sheet and the 2 nd sheet,

the method for manufacturing a pants-type absorbent article further comprises the steps of: at least a part of the 1 st sheet is arranged to overlap on the skin side of the absorbent main body, and a volatile material is applied to at least one of the non-skin side surface of the 1 st sheet and the skin side surface of the absorbent main body in the region where the 1 st sheet and the absorbent main body overlap.

17. The method of manufacturing a pant-type absorbent article according to claim 16,

the adhesive application step is performed after the volatile substance application step is performed.

18. A method of manufacturing a pant-type absorbent article according to claim 16 or 17,

in the step of manufacturing the pants-type absorbent article, the volatile material and the adhesive are applied so as not to overlap with each other when the pants-type absorbent article is viewed in the thickness direction.

19. A method for manufacturing a pants-type absorbent article having an absorbent main body and a waist member superposed and joined to a non-skin side of the absorbent main body, the method being characterized in that,

the pants-type absorbent article has a vertical direction and a horizontal direction intersecting each other,

the method for manufacturing the pants-type absorbent article comprises the following steps:

a conveying step of conveying a 1 st sheet disposed at a position closest to a skin side of the waistline member and a 2 nd sheet disposed at a position closest to a non-skin side of the waistline member in a predetermined conveying direction;

an adhesive application step of applying an adhesive to at least one of the non-skin side surface of the 1 st sheet and the skin side surface of the 2 nd sheet; and

a sheet joining step of laminating and joining the non-skin-contact side surface of the 1 st sheet and the 2 nd sheet,

the method for manufacturing a pants-type absorbent article further comprises the steps of: the waistline member has a stretchable film stretchable in the left-right direction, has a portion where the stretchable film and the volatile material overlap when viewed in the front-back direction, and is disposed on a non-skin side of the volatile material in a thickness direction.

20. The method of manufacturing a pant-type absorbent article according to claim 19,

21. A method of manufacturing a pant-type absorbent article according to claim 19 or 20,