WO2023119880A1

WO2023119880A1 - Holder

Info

Publication number: WO2023119880A1
Application number: PCT/JP2022/040564
Authority: WO
Inventors: 研根本; 華阿部; 賢司小林; 章之植田; 拓也幸田
Original assignee: 花王株式会社
Priority date: 2021-12-24
Filing date: 2022-10-28
Publication date: 2023-06-29
Also published as: JP2023094951A; JP7449268B2

Abstract

This holder has: a main body part (2) that has a height direction (HD) and a circumferential direction (CD), has a front part (F) and a rear part (R) joined with a pair of joining parts (S), and has a sheet material continuously present between the pair of joining parts (S) in at least one of the front part (F) and the rear part (R); and an extending part (21) that has a cutout part (23) in which no sheet material is present between the pair of joining parts (S), and extends toward the lower side in the height direction (HD) from the main body part (2). When the front part (F) or the rear part (R) is equally divided, in the width direction along the circumferential direction (CD), into (3) regions including a central region (C) and side regions (E) located on both sides of the central region (C), the cutout part (23) has a top part (23a) in the central region (C), is formed from the central region (C) to the side regions (E). An inclined edge part (23b) in which the length extending from the main body (2) gradually increases towards the joining part (S) is provided to each side of the top part (23a).

Description

holder

The present invention relates to a holder that holds an absorbent pad attached to a wearer.

As a type of absorbent article such as a disposable diaper, an absorbent pad that absorbs and retains body fluids such as urine, and an absorbent pad that is annularly worn around the wearer's waist and placed in the wearer's crotch area. A separate type is known in which an absorbent pad is detachably attached to the holder. In a conventional separate type absorbent article, as described in Patent Documents 1 to 3, the holder is provided with a holder-side fastening structure capable of fastening the fastening structure of the absorbent pad. .

The holder described in Patent Document 1 has, in the circumferential direction, a central portion with a short length in the height direction and intermediate portions located on both sides of the central portion and having a length in the height direction longer than the central portion. have. In the document, since the lower edge in the height direction of the holder in the central portion is located further from the wearer's excretory part than the edge in the intermediate portion, the central portion is more comfortable for the wearer than the intermediate portion. It is described that it is difficult to stain with the excrement of

Patent Literatures

2 and 3 describe forming notches or slits on the lower side in the height direction of the central regions of the abdominal portion and the dorsal portion of the holder.

US2004186456A1 JP 2010-82139 A US2013012905A1

The present invention relates to an annular holder that is worn around the waist of a wearer and capable of holding an absorbent pad on the wearer.
In one embodiment, it preferably has a height direction along the wearer's height direction and a circumferential direction along the waist direction.
In one embodiment, it is preferable that the ventral portion arranged on the ventral side and the dorsal portion arranged on the back side are joined by a pair of joint portions.
In one embodiment, at least one of the ventral portion and the dorsal portion includes a body portion in which a sheet material continuously exists between the pair of joints, and the sheet material exists between the pair of joints. It is preferable to have an extended portion extending downward in the height direction from the main body portion.
In one embodiment, when the ventral portion or the dorsal portion is divided into three equal parts in the width direction along the circumferential direction and divided into a central region and side regions located on both sides thereof, the missing portion is a slope formed from the central region to the side regions and having an extension length from the main body that gradually increases toward the joint on both sides of the top; It preferably has edges.
Other features, advantages and embodiments of the invention are described below.

FIG. 1 is a perspective view of one embodiment of the holder of the present invention. FIG. 2 is a plan view schematically showing a non-skin-facing surface (outer surface) on the ventral side of the holder shown in FIG. 1 in the maximum extension state. FIG. 3(a) is a cross-sectional view schematically showing a cross section taken along the line II of FIG. 2 (a cross section along the height direction and thickness direction of the holder shown in FIG. 2), and FIG. 2 (a cross section along the height direction and thickness direction of the holder shown in FIG. 2) taken along the line II-II of FIG. 2. FIG. FIG. 4 is a diagram showing a usage example of the holder shown in FIG. 1, and is a perspective view of a disposable diaper (absorbent article) including the holder and an absorbent pad attached thereto. FIG. 5 is a developed plan view schematically showing a skin-facing surface (inner surface) side of the diaper shown in FIG. FIG. 6 is an enlarged view of a main part schematically showing a modified example of the shape of the lower end of the holder of the present invention. FIG. 7 is an enlarged view of a main part schematically showing another modified example of the shape of the lower end of the holder of the present invention. FIG. 8 is an enlarged view of a main part schematically showing still another modified example of the shape of the lower end of the holder of the present invention. FIG. 9 is an enlarged view of a main part schematically showing still another modified example of the shape of the lower end of the holder of the present invention.

Detailed description of the invention

In the holder of Patent Document 1, the lower portion of the intermediate portion in the height direction, particularly the portion located at the corner portion from the central portion, is turned over toward the non-skin facing surface side or the skin facing surface side to improve fit. is likely to be damaged. In particular, when the holder has elasticity in the circumferential direction, the lower portion of the intermediate portion is more likely to be turned over.
Also in the holders of

Patent Documents

2 and 3, there is a possibility that the lower end portions of the portions located on both sides of the notch or slit in the circumferential direction of the holder may be turned up and the fit may be impaired.

Therefore, an object of the present invention is to provide a holder that is excellent in fit and resistant to dirt.

Hereinafter, the present invention will be described based on its preferred embodiments with reference to the drawings. In addition, in the following description of the drawings, the same or similar reference numerals are given to the same or similar parts. The drawings are basically schematic, and the ratio of each dimension may differ from the actual one.

1 to 3 show a holder 1, which is one embodiment of the holder of the present invention. 4 and 5 show a disposable diaper 10 (hereinafter also referred to as "diaper 10") including a holder 1 and an absorbent pad 11 secured thereto as an example of use of the holder of the present invention. It is shown. The diaper 10 is one embodiment of the absorbent article of the present invention, that is, an absorbent article comprising the holder of the present invention and an absorbent pad attachable to the holder. As shown in FIG. 4, the diaper 10 is constructed by connecting the holder 1 and the absorbent pad 11 via the holder-side fastening structure 6 and the pad-side fastening structure 16. WH and a pair of leg openings LH, LH defined by the lower end in the height direction HD of the holder 1 and both side edges along the longitudinal direction (longitudinal direction X described later) of the absorbent pad 11. . Note that the absorbent pad 11 is not a constituent member of the holder 1 .

In the diaper 10, which is a separate type absorbent article, the holder 1 and the absorbent pad 11 can be freely connected and separated via the

fixing structures

6, 16, so compared to conventional non-separate type absorbent articles, The load on the environment is reduced. That is, a conventional non-separate type absorbent article is used in which the portion corresponding to the waist of the wearer (portion corresponding to the holder) and the portion corresponding to the crotch portion of the wearer (portion corresponding to the absorbent pad) are inseparably integrated. When discarding later, even if the portion corresponding to the holder is not soiled, it has to be discarded together with the portion corresponding to the absorbent pad that is soiled with excrement. Since only the pad 11 needs to be replaced with a new one, the amount of garbage disposal and carbon dioxide emissions are reduced compared to non-separate type absorbent articles, and the burden on the environment can be reduced.
In addition, since the absorbent pad 11 is detachably fixed to the holder 1 while the diaper 10 is being worn, the work of replacing the absorbent pad 11 with a new one is simple, and the diaper 10 is similar to the conventional non-separate type. The burden of replacement work is greatly reduced compared to other absorbent articles.

The holder 1 is worn in a ring shape around the wearer's waist, and is capable of holding the absorbent pad 11 attached to the wearer, that is, in the worn state, and is arranged in the height direction along the height direction of the wearer. It has HD and a circumferential direction CD along the waist direction. The holder 1 is provided with a holder-side fastening structure 6 capable of detachably fastening a pad-side fastening structure 16 of the absorbent pad 11 .

Here, the absorbent pad 11 will be briefly described with reference to FIGS. It includes a liquid-impermeable, liquid-impermeable or water-repellent backsheet 13 positioned relatively far from the wearer's skin, and an absorbent body 14 interposed between the two

sheets

12 and 13 . These members constituting the absorbent pad 11 are integrated by a known bonding means such as an adhesive. The absorbent pad 11 has a shape elongated in one direction in a plan view, and when the absorbent pad 11 is used, the longitudinal direction of the absorbent pad 11 is aligned with the height direction HD of the holder 1 pre-attached to the wearer. Let The longitudinal direction of the absorbent pad 11 corresponds to the longitudinal direction X corresponding to the front-rear direction of the wearer of the diaper 10 , and the lateral direction Y of the absorbent pad 11 orthogonal to the longitudinal direction X corresponds to the circumferential direction CD of the holder 1 . handle. On both sides of the absorbent pad 11 along the longitudinal direction X, there are arranged a pair of leak-

proof cuffs

15, 15 that stand up against the wearer's skin when the diaper 10 is worn. Each leak-preventing cuff 15 includes a leak-preventing cuff-forming sheet 150 forming the main body of the leak-preventing cuff 15, and an elastic member 151 fixed to the sheet 150 in an elongated state in the longitudinal direction X. As shown in FIG. Pad-side fastening structures 16 are arranged on the skin-facing surfaces of both ends of the absorbent pad 11 in the longitudinal direction X, and the pad-side fastening structures 16 are fastened to the holder-side fastening structures 6 of the holder 1 . By doing so, the absorbent pad 11 can be detachably attached to the holder 1 .
Note that the absorbent pad 11 is merely one embodiment of an absorbent pad to which the holder of the present invention can be applied. It is not limited to the absorbent pad 11 as long as it has a pad-side fastening structure that can be worn.

As used herein, the term “skin-facing surface” refers to a wearing article such as an absorbent article, a holder, or an absorbent pad, or a constituent member thereof (for example, a holder-side fastening structure of a holder), which is worn by the wearer when the wearing article is worn. The "non-skin facing surface" refers to the surface of the wearing article or its constituent members that faces away from the skin when the wearing article is worn.

The holder 1 will be described in detail below.
The holder 1 has an abdominal portion F arranged on the wearer's ventral side (front side) and a dorsal portion R arranged on the wearer's dorsal side (rear side). The ventral portion F and the dorsal portion R are joined by a pair of joining portions S, S at both ends in the width direction along the circumferential direction CD. As means for joining the ventral portion F and the dorsal portion R, known joining means such as adhesives and fusion bonding can be used. The holder 1 has an annular shape as shown in FIG. 1 and has a waist opening WH into which a wearer's trunk is inserted when worn. The joint portion S corresponds to a side seal portion in a general non-separate pants-type disposable diaper.

In this embodiment, the ventral part F and the dorsal part R of the holder 1 each have a rectangular shape in which a part of one long side is longer than the other in plan view in the maximum stretched state as shown in FIGS. 2 and 5 . It has a concave shape toward the sides. Specifically, the ventral portion F and the dorsal portion R of the holder 1 each have an upper edge 1a arranged on the upper side in the height direction of the wearer and a lower edge 1b arranged on the lower side in the wearer's height direction. , the lower edge 1b is recessed toward the upper edge 1a.
Further, in this embodiment, the ventral portion F and the dorsal portion R have the same shape and the same size in plan view, and the ventral portion F and the dorsal portion R are formed in a state in which the joint portion S is maintained without breaking. When the portion R is superimposed, their contours match.
In addition, as shown in FIG. 2, the ventral portion F and the dorsal portion R are divided into three equal parts in the width direction along the circumferential direction CD, resulting in a central region C and side regions E, E located on both sides thereof. can be divided into The division into three equal parts is performed by dividing the full length L in the width direction of each of the ventral part F and the dorsal part R into three equal parts in the maximum stretched state. The total length L in the width direction of the ventral portion F means the distance between the inner ends of the pair of joint portions S, S in the width direction. The same applies to the total length of the dorsal portion R in the width direction.

As used herein, the term "maximum stretched state" refers to a state in which the elastic member of each part of the wearing article such as the absorbent article, holder, and absorbent pad is stretched to the maximum, and the design dimensions, that is, the state in which the influence of the elastic member is completely eliminated. It refers to the state in which it is expanded until it becomes the same size as when it is expanded flat.
In addition, the “unfolded and maximum stretched state” refers to a state in which the wearing article is spread flatly to be in the unfolded state and then put into the maximum stretched state. In the case of an absorbent article having a portion, the absorbent article is cut off at the side seal portion and spread flat to form the expanded state.

In this embodiment, the holder 1 includes an outer layer sheet 3 forming the non-skin facing surface (outer surface) of the holder 1 and an inner layer sheet 4 forming the skin facing surface (inner surface) of the holder 1 . The inner layer sheet 4 can come into contact with the wearer's skin when the holder 1 is worn.

In this embodiment, as shown in FIGS. 3(a) and 3(b), the outer layer sheet 3 has the upper end portion in the height direction HD folded back toward the skin facing side, and the folding fold of the outer layer sheet 3 The upper end 1a of the holder 1 is positioned at the upper end 1a of the holder 1, and the vicinity of the upper end 1a (upper end portion) of the holder 1 includes a laminated structure of the outer layer sheet 3 and the folded portion 30 thereof. The folded portion 30 and the outer layer sheet 3 facing it are joined together by a known joining means such as an adhesive or fusion.

In this embodiment, the holder 1 includes an elastic member 5 that is arranged to be stretchable in a direction (circumferential direction CD) orthogonal to the height direction HD. More specifically, as shown in FIGS. 3A and 3B, a plurality of elastic members 5 are provided between the outer layer sheet 3 and the inner layer sheet 4 and between the outer layer sheet 3 and the folded portion 30 thereof. are arranged so as to be able to expand and contract in a direction (circumferential direction CD) perpendicular to the height direction HD. As shown in FIG. 1, the plurality of elastic members 5 extend over the entire length of a direction (circumferential direction CD) orthogonal to the height direction HD of each of the ventral portion F and the dorsal portion R, and extend in the height direction HD. intermittently arranged. Each elastic member 5 is fixed to other peripheral members with an adhesive. The number and positions of the elastic members 5 to be arranged are not particularly limited, and can be appropriately set in consideration of the fit of the holder 1 to the wearer's body.

As both

sheets

3 and 4, non-woven fabric, woven fabric, resin film, etc. by various production methods can be used, respectively. Specific examples of nonwoven fabrics that can be used as the

sheets

3 and 4 include spunbond nonwoven fabrics, air-through nonwoven fabrics, and needle-punched nonwoven fabrics, and may have a single-layer structure or a laminated structure in which one or more types of nonwoven fabrics are laminated. .
Both

sheets

3 and 4 may be of the same type or of different types. The term "same type" as used herein means that the manufacturing process, the type of constituent fibers, the fiber diameter and length of the constituent fibers, the thickness and basis weight of the fiber sheets are all the same among the sheets to be compared. If any one of these is different, then the contrasting sheets are "dissimilar" to each other.

Since the holder 1 does not include an absorber that absorbs and retains moisture, if the

sheets

3 and 4 and other structural members are washable, it can be washed and used repeatedly. . The fact that the holder 1 is washable leads to a reduction in the amount of garbage disposal and carbon dioxide emissions, and can contribute to a reduction in the burden on the environment. From the viewpoint of making the holder 1 washable, it is preferable to use a woven fabric for the sheet-like constituent members such as the

sheets

3 and 4 .

One or both of the

sheets

3 and 4 may have elasticity in a direction (circumferential direction CD) perpendicular to the height direction HD. The holder of the present invention includes a form that does not have the elastic member 5 described above. It is preferably composed of a flexible stretchable nonwoven fabric. The present invention includes, for example, a form in which the outer layer sheet 3 has stretchability in a direction orthogonal to the height direction HD and the inner layer sheet 4 does not have stretchability.

A stretchable nonwoven fabric that can be used as both

sheets

3 and 4 includes a nonwoven fabric containing elastic filaments (hereinafter also referred to as "specific stretchable nonwoven fabric"). The “elasticity” referred to here means that when the force is released from a state that can be stretched and is stretched 100% with respect to the original length (becomes 200% of the original length), the original The property of returning to a length of 125% or less of the length of In the specific stretchable nonwoven fabric, it is preferable that the elastic filaments are bonded to the nonwoven fabric in a substantially unstretched state. The nonwoven fabric preferably contains inelastic fibers.

In the specific stretchable nonwoven fabric, the elastic filaments are typically substantially continuous over the entire length in the extending direction of the elastic filaments in the specific stretchable nonwoven fabric. Also, the elastic filaments contain an elastic resin.
In the specific stretchable nonwoven fabric, the nonwoven fabric can be stretched in the same direction as the direction in which the elastic filaments extend. The term "stretchable" here refers to (a) the case where the constituent fibers of the nonwoven fabric themselves are stretched, and (b) even if the constituent fibers of the nonwoven fabric themselves are not stretched, the fibers bonded at the intersections are separated from each other. , Including the case where the three-dimensional structure formed by multiple fibers is structurally changed due to the bonding of fibers, etc., the constituent fibers are torn, and the slack of the fibers is stretched, so that the nonwoven fabric as a whole stretches. do. In the specific stretchable nonwoven fabric, the nonwoven fabric may already be stretchable in a raw fabric state before being joined to the elastic filaments. Alternatively, the raw fabric may not be extensible before being joined to the elastic filaments, but may be made extensible after being joined to the elastic filaments by being processed so as to be extensible. . Specific methods for making the nonwoven fabric stretchable include heat treatment, stretching between rolls, bite stretching by tooth grooves or gears, tensile stretching by a tenter, and the like.

A preferred embodiment of the specific stretchable nonwoven fabric includes one having a configuration in which a plurality of elastic filaments are arranged between two nonwoven fabrics arranged opposite to each other. In such a preferred embodiment, the plurality of elastic filaments are arranged so as to extend in one direction (for example, a direction perpendicular to the height direction HD) without crossing each other, and intermittently in a direction perpendicular to the one direction. may be arranged, in which case the one direction may be the stretch direction of the specific stretchable nonwoven fabric. The two nonwoven fabrics may be of the same type or of different types. The term "same type" as used herein means that the manufacturing process, the type of constituent fibers, the fiber diameter and fiber length of the constituent fibers, the thickness and basis weight of the nonwoven fabric are all the same between the two nonwoven fabrics to be compared. . Two nonwovens are dissimilar to each other if at least one of these factors differs between the two nonwovens being contrasted.

As the stretchable nonwoven fabric that can be used as both

sheets

3 and 4, various known ones can be used. A stretchable sheet, a stretchable nonwoven fabric produced by the method for producing a stretchable nonwoven fabric described in the same publication, a laminated sheet described in JP-A-10-29259, and the like can also be used.

The holder-side fastening structure 6, which is one of the features of the holder 1, will be described. More specifically, it is fixed to the non-skin facing surface of the outer layer sheet 3 .

As the holder-side fastening structure 6, it is sufficient that the pad-side fastening structure 16 (see FIG. 5) of the absorbent pad 11 can be detachably fastened. Can be used without restrictions. For example, one or both of the holder-side fastening structure 6 and the pad-side fastening structure 16 has an adhesive portion formed by applying an adhesive, and the pad-side fastening structure 16 is attached to the holder side via the adhesive portion. It may be detachably attached to the fastening structure 6 .

In this embodiment, a mechanical hook-and-loop fastener is used as the fastening structure including the holder-side fastening structure 6 and the pad-side fastening structure 16 . The term "mechanical hook-and-loop fastener" as used here means a surface member (male member) with hook material (engagement member) consisting of hook-shaped projections arranged on one side, and a loop material consisting of pile-shaped projections on one side. An arranged face member (female member) refers to a set of fasteners. A specific example of the mechanical hook-and-loop fastener is Velcro (registered trademark).
Specifically, in this embodiment, the holder-side fastening structure 6 is a female member of a mechanical hook-and-loop fastener, and is provided on the base material and the non-skin facing surface (outer surface) of the base material. A structure 16 includes a secureable attachment area. The base material included in the holder-side fastening structure 6 is directly fixed to the main body 2 via a known joining means 60 (see FIGS. 3(a) and 3(b)) such as an adhesive or fusion. The pad-side fastening structure 16 is a male member of a mechanical hook-and-loop fastener. have.

In the holder of the present invention, at least one of the ventral portion F and the dorsal portion R includes a body portion 2 in which the

sheet members

3 and 4 are continuously present between the pair of joint portions S and S, and and an extension portion 21 extending downward in the height direction HD. In this embodiment, both the ventral portion F and the dorsal portion R have the body portion 2 and the extending portion 21 . The holder-side fastening structure 6 is provided on the non-skin facing surface of the body portion 2 .

The extending portion 21 has a missing portion 23 where the

sheet materials

3 and 4 are not present between the pair of joint portions S and S. The missing portion 23 has a top portion 23 a in the central region C and is formed from the central region C to the side regions E. As shown in FIG. The cutout portion 23 has inclined edges 23b on both sides of the top portion 23a of the cutout portion 23, the extending length of which gradually increases from the main body portion 2 as the joining portion S is approached. The inclined edge portion 23b is inclined with respect to the width direction along the CD. The top portion 23a of the missing portion 23 may be parallel to the width direction along the circumferential direction CD, or may be inclined with respect to the width direction.

In addition, the extending portion 21 has linear flat edge portions 25b having a constant extending length from the main body portion 2 near the pair of joint portions S, S, respectively. In this embodiment, the lower end portion 25b of the extension portion 21 is a flat edge portion 25b. When the extension length H1 from the body portion 2 is constant, it is preferable that the lower end portion 25b of the extension portion 21 is linear parallel to the circumferential direction CD as in the present embodiment. 2, the lower end portion 25b of the extending portion 21 has fine unevenness when viewed microscopically, but may be linear extending in the circumferential direction CD when viewed macroscopically. For example, when the lower end portion 25b has fine irregularities and the distance in the height direction HD between the apex of the convex portion and the bottom point of the concave portion is 10 mm or less, preferably 5 mm or less, the lower end portion 25b is a flat edge. 25b.

In this embodiment, the lower edge 1b of the holder 1 in the height direction HD is composed of the top 23a of the missing portion 23, a pair of

inclined edges

23b, 23b, and a pair of

flat edges

25b, 25b. The extending portion 21 has an extending portion main body 25 which is a portion surrounded by the inclined edge portion 23b, the flat edge portion 25b and the joint portion S on both sides of the missing portion 23 respectively.

Since the holder 1 has the missing portion 23 extending from the central region C to the side region E, the lower edge 1b of the holder 1 is arranged away from the wearer's excretory part when the holder 1 is worn. . Therefore, the lower edge 1b is less likely to come into contact with the wearer's excrement, and the holder 1 can be prevented from being soiled.
Moreover, since the cutout portion 23 has the inclined edge portion 23b, the vicinity of the lower edge 1b of the portions located on both sides of the cutout portion 23 can be firmly fitted to the wearer's skin. It is possible to prevent the surface from being turned over. Therefore, the holder 1 is also excellent in fit.
As described above, the holder 1 of the present embodiment has excellent fitting properties and is resistant to dirt.
On the other hand, the cutouts, slits, and the like of the holders of Patent Documents 1 to 3 have corners on both sides of the cutouts or slits that are easily turned up, which tends to cause discomfort. The cutouts and slits in

Patent Documents

2 and 3 are short in width in the circumferential direction, and the holder easily becomes dirty.

From the viewpoint of effectively preventing the holder 1 from being soiled, the length L1 in the width direction of the missing portion 23 is preferably 70% or more of the total length L in the width direction of the ventral portion F or the dorsal portion R. It is more preferably 80% or more, still more preferably 90% or more, and from the viewpoint of sufficiently securing the area of the extending portion 21, it is preferably 98% or less, more preferably 97% or less, and still more preferably 96% or less. From the viewpoint of compatibility between these, it is preferably 70% or more and 98% or less, more preferably 80% or more and 97% or less, and still more preferably 90% or more and 96% or less. The length L1 of the missing portion 23 is a linear length obtained by subtracting the length of the flat edge portion 25b from the total length L.
From the viewpoint of preventing the extending portion 21 from being turned over, the length L2 in the width direction of the top portion 23a of the missing portion 23 is preferably 30% or less, more preferably 20% or less, and even more preferably 20% or less of the total length L. is 10% or less.
From the viewpoint of preventing the extending portion 21 from being turned over, the length L3 in the width direction of the inclined edge portion 23b is preferably 15% or more, more preferably 20% or more, and still more preferably 25% of the total length L. % or more.

The ratio H1/H of the extension length H1 of the extension portion 21 from the main body portion 2 to the total length H of the holder 1 in the height direction HD is preferably 0 from the viewpoint of effectively preventing the holder 1 from becoming dirty. 0.03 or more, more preferably 0.05 or more, still more preferably 0.10 or more, and from the viewpoint of maintaining stress for preventing the holder 1 from slipping down, preferably 0.50 or less, more preferably It is 0.40 or less, more preferably 0.30 or less. It is 10 or more and 0.30 or less.

In the holder of the present invention, only one of the ventral portion F and the dorsal portion R may have the extending portion 21 having the missing portion 23, but like the holder 1 of the present embodiment, It is preferable to have the extending portion 21 on both the ventral portion F and the dorsal portion R. By doing so, the lower edges 1b of the ventral portion F and the dorsal portion R can be placed away from the wearer's excretory parts such as the penis and anus, thereby further preventing the holder 1 from getting dirty. can be effectively prevented.

It is preferable that the extending portion 21 has an elastic portion that expands and contracts in the width direction CD of the ventral portion F or the dorsal portion R on both sides of the missing portion 23 . By doing so, when the holder 1 is worn, the extension 21, particularly the extension main body 25, fits around the waist of the wearer, so that the fit of the holder 1 can be further improved. . The stretchable portion can be formed, for example, by arranging an elastic member stretchable in the width direction CD on the extension portion 21 . Alternatively, all or part of the extending portion 21 may be formed by an elastic sheet having elasticity in the width direction CD.

As described above, the holder 1 of the present embodiment includes the elastic member 5 arranged so as to be stretchable in the circumferential direction CD, and the body portion 2 has stretchability in the circumferential direction CD. The main body portion 2 and the extending portion 21 may have the same or different stretching stresses. When the expansion/contraction stress of the body portion 2 and the expansion/contraction stress of the extension portion 21 are different, the expansion/contraction stress S2 of the expansion/contraction portion of the extension portion 21 is greater than the expansion/contraction stress S1 of the region adjacent to the extension portion 21 in the body portion 2. is preferably small. If the stretching stress S1 of the region adjacent to the extending portion 21 in the main body portion 2 and the stretching stress S2 of the stretching portion of the extending portion 21 are in the relationship described above, the fit of the holder 1 is improved. In addition, it is possible to prevent the extension part 21 from being turned over. From the viewpoint of achieving this effect more remarkably, the ratio S2/S1 of the stretching stress S2 to the stretching stress S1 is preferably 0.05 or more, more preferably 0.10 or more, and still more preferably 0. 0.20 or more, preferably 0.95 or less, more preferably 0.90 or less, still more preferably 0.80 or less, more preferably 0.05 or more and 0.95 or less, more preferably 0.10 0.90 or less, more preferably 0.20 or more and 0.80 or less. Stretch stress can be measured by the following method.

<Method for measuring stretching stress>
A sample piece having a length of 50 mm in the circumferential direction CD and a length of 10 mm in the height direction HD is cut out from each of the extending portion 21 of the holder 1 and the region adjacent to the extending portion 21 of the main body portion 2 .
Next, the cut sample piece is sandwiched between a pair of chucks in a Tensilon tensile tester (“RTC-1210A” manufactured by ORIENTEC) in a non-stretched and unslackened state. The chuck-to-chuck distance at this time is set to 25 mm. Then, after extending the sample piece at a speed of 300 mm / min until the distance between the chucks is 50 mm, when the distance between the chucks is returned to 37.5 mm (length corresponding to 1.5 times extension) Measure the tensile load (cN/10 mm). Such measurements are performed on five sample pieces, and the average value (average value of the tensile load when the distance between chucks is returned to 37.5 mm) is taken as the stretching stress (cN/10 mm).

From the viewpoint of effectively preventing the vicinity of the lower edge 1b of the portions located on both sides of the missing portion 23 from being turned over toward the non-skin facing surface side or the skin facing surface side, the inclined edge portion 23b and the flat edge when the holder 1 is fully extended The angle α formed with the portion 25b is preferably 120° or more, more preferably 135° or more, and even more preferably 150° or more. The upper limit of the angle α can be set to 175°, for example.

In this embodiment, the lower edge 1b of the holder 1 is composed only of straight lines, but the lower edge 1b of the holder 1 may be composed of straight lines and curved lines as shown in FIG. In the modification shown in FIG. 6, the top portion 23a and the flat edge portion 25b of the missing portion 23 are composed of straight lines and curved lines, and the inclined edge portion 23b is composed of curved lines. As in the modification shown in FIG. 6, when the vicinity of the intersection of the inclined edge portion 23b and the flat edge portion 25b or the vicinity of the intersection of the inclined edge portion 23b and the top portion 23a of the missing portion 23 can be approximated to a curve by a polynomial approximation, The angle α between the inclined edge portion 23b and the flat edge portion 25b can be measured as follows.

First, the vicinity of the intersection of the inclined edge portion 23b and the flat edge portion 25b is approximated to a curve by a polynomial approximation, and a virtual circle R1 having the same curvature as the curve and being in contact with the inclined edge portion 23b and the flat edge portion 25b is formed. think. Next, the vicinity of the intersection of the slanted edge portion 23b and the apex portion 23a of the missing portion 23 is approximated to a curve by a polynomial approximation formula, and has the same curvature as the curve. Consider a tangent virtual circle R2. An imaginary tangent line Q1 that touches both the imaginary circle R1 and the imaginary circle R2 is then drawn. The angle between the virtual tangent line Q1 and the flat edge 25b can be defined as the angle α between the inclined edge 23b and the flat edge 25b.

Also, the lower edge 1b of the holder 1 may have a shape in which unevenness is repeated, as shown in FIG. In the modification shown in FIG. 7, the lower edge 1b of the holder 1 is jagged. As in the modification shown in FIG. 7, the vicinity of the intersection of the inclined edge portion 23b and the lower end portion 25b of the extension portion 21 or the vicinity of the intersection point of the inclined edge portion 23b and the top portion 23a of the missing portion 23 is curved by a polynomial approximation. If approximation is difficult, the angle α between the slanted edge 23b and the flat edge 25b can be measured as follows.

First, a point P1 on the lower end portion 25b of the extending portion 21 that is closest to the inclined edge portion 23b and is located on the highest side in the height direction HD, and a point P1 that is closest to the flat edge portion 25b on the inclined edge portion 23b. Consider a virtual circle R3 that passes through a point P2 that is positioned at and is located on the uppermost side in the height direction HD. Next, a point P3 on the inclined edge portion 23b located closest to the top portion 23a of the missing portion 23 and located on the lowest side in the height direction HD, and Consider an imaginary circle R4 that passes through a point P4 that is located near and is located on the lowermost side in the height direction HD. An imaginary tangent line Q2 that touches both the imaginary circle R3 and the imaginary circle R4 is then drawn. The angle formed between the virtual tangent line Q2 and the lower end portion 25b of the extending portion 21 can be the angle α formed between the inclined edge portion 23b and the flat edge portion 25b. When the lower end portion 25b of the extending portion 21 is not a straight line parallel to the circumferential direction CD, the flat edge portion 25b is approximated to a straight line T parallel to the circumferential direction CD by the method of least squares, and the approximate straight line T and the virtual tangent line Q2 are approximated. can be defined as the angle α between the inclined edge portion 23b and the flat edge portion 25b.

In addition, in the embodiment shown in FIG. 1, the inclined edge portion 23b extends continuously from the main body portion 2, but the inclined edge portion 23b is changed as shown in FIGS. , the extension length from the body portion 2 may be changed stepwise. As shown in FIG. 8, the angle between the flat edge portion 25b and the imaginary line Q3 passing through both ends of the inclined edge portion 23b may be the angle α between the inclined edge portion 23b and the flat edge portion 25b.

The present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the scope of the present invention.
For example, the holder of the present invention may be worn in a ring shape around the wearer's waist when in use, and may not be in a ring shape when not in use. For example, the holder 1 has a belt-like shape that is long in one direction, and one end and the other end in the longitudinal direction of the holder 1 are detachably connectable. Alternatively, the holder 1 may be formed into a ring shape by connecting one end portion and the other end portion in the longitudinal direction of the holder 1 . Alternatively, the holder 1 is divided into a plurality of members (for example, a member corresponding to the ventral portion F and a member corresponding to the dorsal portion R) in the circumferential direction CD, and the plurality of members can be detachably attached to each other in one direction. The holder 1 may be configured to be connectable, and the annular holder 1 may be formed by coupling the plurality of members together during use (mounting).

In the above-described embodiment, the ventral portion F and the dorsal portion R of the holder 1 have the same shape and the same size in plan view, but in the present invention, the shape and/or the size may differ from each other. . Specifically, for example, the lower edge 1b of the dorsal portion R may be positioned lower than the lower edge 1b of the ventral portion F (farther from the holder-side fastening structure 6).

In the above embodiment, both the outer layer sheet 3 and the inner layer sheet 4 have a single layer structure, but in the present invention, one or both of the

sheets

3 and 4 may have a laminated structure. For example, the outer layer sheet 3 may have a laminated structure of two or more sheets including a sheet having stretchability in the lateral direction Y, and the inner layer sheet 4 may have a single layer structure composed of a non-stretchable sheet.
Although the outer layer sheet 3 is folded back to form the folded portion 30 in the above embodiment, the outer layer sheet 3 may not be folded back in the present invention.

In the above-described embodiment, the holder 1 includes the outer layer sheet 3 and the inner layer sheet 4 as sheet-like members constituting the holder 1. You can stay. Specifically, for example, in addition to the two

sheets

3 and 4, the holder 1 further includes an area corresponding to the wearer's waist on the skin-facing surface (inner surface) of the holder 1 (for example, the area where the folded portion 30 is arranged and its (neighborhood) may be included in the functional sheet. The functional sheet has, for example, at least one of various functions such as sweat absorption, hygroscopicity, antibacterial properties, deodorizing properties, and skin care properties.

In the above embodiment, the holder-side fastening structure 6 is the female member of the mechanical hook-and-loop fastener, and the pad-side fastening structure 16 is the male member of the mechanical hook-and-loop fastener. The fastening structure 6 may be a male member of a mechanical hook-and-loop fastener, and the pad-side fastening structure 16 may be a female member of a mechanical hook-and-loop fastener.

The following notes are further disclosed with respect to the above-described embodiments of the present invention.
<1>
An annular holder that is worn around the waist of a wearer and capable of holding an absorbent pad attached to the wearer,
Having a height direction along the wearer's height direction and a circumferential direction along the waist direction,
The ventral part arranged on the ventral side and the dorsal part arranged on the back side are joined by a pair of joints,
At least one of the ventral portion and the dorsal portion has a main body portion in which the sheet material continuously exists between the pair of joints and a missing portion in which the sheet material does not exist between the pair of joints. and an extension portion extending downward in the height direction from the body portion,
When the ventral part or the dorsal part is divided into three equal parts in the width direction along the circumferential direction and divided into a central area and side areas located on both sides thereof, the missing part is the top part in the central area. and is formed from the central region to the side regions, and has sloped edge portions on both sides of the top portion whose extension length from the body portion gradually increases as the joint portion is approached. You're there, Holder.

<2>
The length of the missing portion in the width direction is 70% or more, preferably 70% or more and 98% or less, more preferably 80% or more and 97% of the total length in the width direction of the ventral portion or the dorsal portion. % or less, more preferably 90% to 96%, the holder according to <1>.
<3>
The missing portion has the top portion located in the central region and parallel to the width direction, and a pair of inclined edges located on both sides of the top portion and inclined with respect to the width direction, The holder according to <1> or <2>.
<4>
a top portion in which the bottom edge of the holder is located in the central region and parallel to the width direction; and a pair of inclined edges located on both sides of the top portion and inclined with respect to the width direction; Any one of the above <1> to <3>, further comprising a linear flat edge portion positioned at the lower end portion of the extension portion and having a constant extension length from the main body portion. holder.
<5>
The length in the width direction of the top portion of the missing portion is 30% or less, preferably 20% or less, and more preferably 10% or less of the total length in the width direction of the ventral portion or the dorsal portion. The holder according to <3> or <4> above.
<6>
The length of the inclined edge in the width direction is preferably 15% or more, more preferably 20% or more, and still more preferably 25% of the total length in the width direction of the ventral portion or the dorsal portion. The holder according to any one of <3> to <5> above.
<7>
A ratio of the extension length in the height direction of the extension portion to the total length of the holder in the height direction is 0.03 or more and 0.50 or less, preferably 0.05 or more and 0.40 or less, more preferably is 0.10 to 0.30, the holder according to any one of <1> to <6>.

<8>
The holder according to any one of <1> to <7>, wherein the extending portion having the missing portion is provided on both the ventral portion and the dorsal portion.
<9>
Any one of <1> to <8>, wherein the extending portion has stretchable portions that stretch and contract in the circumferential direction of the ventral portion or the dorsal portion on both sides of the missing portion. Holder described in .
<10>
The main body has elasticity in the circumferential direction, and the expansion and contraction stress of the expansion and contraction portion of the extension is smaller than the expansion and contraction stress of the region adjacent to the extension in the body, <9 > holder described in.
<11>
A ratio of the stretching stress of the stretching portion of the extending portion to the stretching stress of the region adjacent to the extending portion is 0.05 or more and 0.95 or less, preferably 0.10 or more and 0.90 or less, more preferably 0.10 or more and 0.90 or less. The holder according to <10> above, which is 0.20 or more and 0.80 or less.
<12>
The extending portion has linear flat edges with a constant extension length from the body portion near each of the pair of joint portions, and the maximum extension of the holder is provided on each side of the top portion. Any one of <1> to <11> above, wherein the angle formed by the inclined edge and the flat edge is 120 degrees or more, more preferably 135 degrees or more, and still more preferably 150 degrees or more and 175 degrees or less. 1. The holder according to 1.
<13>
The holder according to any one of <1> to <12>, wherein the bottom edge of the holder has a shape in which unevenness is repeated.
<14>
the holder according to any one of <1> to <13>;
an absorbent pad attachable to the holder;
An absorbent article comprising:

　According to the present invention, it is possible to provide a holder that is excellent in fit and is not easily soiled.

Claims

An annular holder that is worn around the waist of a wearer and capable of holding an absorbent pad attached to the wearer,
Having a height direction along the wearer's height direction and a circumferential direction along the waist direction,
The ventral part arranged on the ventral side and the dorsal part arranged on the back side are joined by a pair of joints,
At least one of the ventral portion and the dorsal portion has a main body portion in which the sheet material continuously exists between the pair of joints and a missing portion in which the sheet material does not exist between the pair of joints. and an extension portion extending downward in the height direction from the body portion,
When the ventral part or the dorsal part is divided into three equal parts in the width direction along the circumferential direction and divided into a central area and side areas located on both sides thereof, the missing part is the top part in the central area. and is formed from the central region to the side regions, and has sloped edge portions on both sides of the top portion whose extension length from the body portion gradually increases as the joint portion is approached. You're there, Holder.
The holder according to claim 1, wherein the length in the width direction of the missing portion is 70% or more of the total length in the width direction of the ventral portion or the dorsal portion.
The missing portion has the top portion located in the central region and parallel to the width direction, and a pair of inclined edges located on both sides of the top portion and inclined with respect to the width direction, 3. Holder according to claim 1 or 2.
a top portion in which the bottom edge of the holder is located in the central region and parallel to the width direction; and a pair of inclined edges located on both sides of the top portion and inclined with respect to the width direction; 4. The holder according to any one of claims 1 to 3, further comprising a linear flat edge located at the lower end of said extension and having a constant extension length from said main body.
The holder according to claim 3 or 4, wherein the length in the width direction of the top portion of the missing portion is 30% or less of the total length in the width direction of the ventral portion or the dorsal portion.
6. The length of the inclined edge portion in the width direction is 15% or more of the total length of the ventral portion or the dorsal portion in the width direction, according to any one of claims 3 to 5. holder.
7. The method according to any one of claims 1 to 6, wherein a ratio of the extension length in the height direction of the extension portion to the total length of the holder in the height direction is 0.03 or more and 0.50 or less. holder as described.
The holder according to any one of Claims 1 to 7, wherein the extending portion having the missing portion is provided on both the ventral portion and the dorsal portion.
9. The extending portion according to any one of claims 1 to 8, wherein the extending portion has stretchable portions that stretch and contract in the circumferential direction of the ventral portion or the dorsal portion on both sides of the missing portion. holder.
10. The main body has elasticity in the circumferential direction, and the expansion and contraction stress of the expansion and contraction portion of the extension is smaller than the expansion and contraction stress of a region adjacent to the extension of the body. Holder described in .
11. The holder according to claim 10, wherein the ratio of the expansion/contraction stress of the expansion/contraction portion of the extension portion to the expansion/contraction stress of the region adjacent to the extension portion is 0.05 or more and 0.95 or less.
The extending portion has linear flat edges with a constant extension length from the body portion near each of the pair of joint portions, and the maximum extension of the holder is provided on each side of the top portion. 12. The holder according to any one of claims 1 to 11, wherein an angle formed by said slanted edge and said flat edge at time is 120 degrees or more.
The holder according to any one of claims 1 to 12, wherein the lower edge of the holder has a shape in which unevenness is repeated.
a holder according to any one of claims 1 to 13;
an absorbent pad attachable to the holder;
An absorbent article comprising: