WO2013024606A1

WO2013024606A1 - Absorbent article

Info

Publication number: WO2013024606A1
Application number: PCT/JP2012/060793
Authority: WO
Inventors: 工藤　淳; 真理安井; 高橋　雄二
Original assignee: ユニ・チャーム株式会社
Priority date: 2011-09-30
Filing date: 2012-04-20
Publication date: 2013-02-21
Also published as: CN202714979U; MY148446A; CN102614050B; JP5082006B1; CN102614050A; TWI397404B; TW201304753A; KR101291848B1; SG188727A1; JP2013075081A; KR20130038209A

Abstract

　The provided absorbent article (1) has an absorbent body (30), wing parts (43) and flap parts (60) extending further outwards in the width direction than the absorbent body, a narrow part (45) narrowing inwards in the width direction between the wing parts and the flap parts. Recessed parts (70) are formed in the flap parts and the narrow part, recessed in the thickness direction of the flap parts and extending rearward from the narrow part. When the wing parts are folded over on a side that does not contact the skin of a user, the flap parts are folded over from the recessed parts on to the side of an item of underwear that does not contact the skin of a user, and thus the side of the flap parts that contacts the skin of a user is arranged so as to face the user.

Description

Absorbent articles

The present invention relates to an absorbent article such as a sanitary napkin, and more particularly to an absorbent article having a wing portion extending outward in the width direction from the absorbent body and folded back to the non-skin contact surface side of the underwear.

Patent Document 1 has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet, and is located on the outer side in the width direction than the absorber. A sanitary napkin having an extended wing is described. When attaching the sanitary napkin thus configured to the underwear, the back sheet on the back side of the absorbent body is brought into contact with the crotch portion of the underwear, and the wing portion is folded back to the non-skin contact surface side of the underwear The sanitary napkin can be attached to the underwear while the crotch portion of the underwear is involved.

Japanese Patent Laying-Open No. 2011-156034 (FIG. 5, paragraph 0004, etc.)

However, the sanitary napkin described above has the following problems.

When the sanitary napkin described in Patent Document 1 is attached to the underwear, the sanitary napkin is folded back to the non-skin contact surface side of the underwear from the crease located near the inner end in the width direction of the wing. The fold line extends along both end portions of the crotch of the underwear, and extends from the front edge to the rear edge in the longitudinal direction of the wing portion. Therefore, the ends of the folds are located at the front edge and the rear edge of the wing portion, and twisting occurs. This twisted portion tends to become hard due to creases. When the twisted portion of the edge of the wing hits, there is a risk of irritation to the skin.

This invention is made | formed in view of the above-mentioned subject, and provides the absorbent article which can reduce the irritation | stimulation by the crease | fold formed in the state folded back to the non-skin contact surface side of the underwear of a wing part. For the purpose.

In order to solve the above-described problems, an absorbent article according to the present invention is a liquid-permeable article having an anteroposterior direction (longitudinal direction L) and a width direction (width direction W) perpendicular to the anteroposterior direction. A top sheet (surface sheet 10), a liquid-impermeable back sheet (back sheet 20), and an absorber (absorber 30) disposed between the top sheet and the back sheet, On the outer side in the width direction than the absorbent body, a wing portion (wing portion 43) folded back to the non-skin contact surface side of the wearer's underwear, and a flap portion (flap portion 60) disposed rearward of the wing portion Between the wing part and the flap part, and the maximum width position located on the outermost side in the width direction in the wing part and the maximum width located on the outermost side in the width direction in the flap part. position A constricted portion (constricted portion 45) that is constricted inward in the width direction is formed, and the flap portion and the constricted portion are recessed in the thickness direction of the flap portion, and are recessed extending rearward from the constricted portion. (The recessed portion 70) is formed, and the recessed portion and the constricted portion are wider than the fold formed in the wing portion in a state where the wing portion is folded back to the non-skin contact surface side. It is formed on the outside, and in the state where the wing part is folded back to the non-skin contact surface side, the flap part is folded back on the non-skin contact surface side of the underwear with the recess as a base point. The gist is that the skin contact surface side of the flap portion is arranged to face the wearer.

It is the top view seen from the skin contact surface side of the absorptive article concerning a 1st embodiment. It is a rear view of the absorbent article shown in FIG. FIG. 2 is a schematic cross-sectional view of the A-A ′ cross section shown in FIG. 1. It is a schematic diagram of the state which mounted | wore the underwear with the absorbent article shown in FIG. FIG. 5 is a schematic cross-sectional view of the B-B ′ cross section shown in FIG. 4.

The absorbent article 1 according to the embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a plan view of the absorbent article, and FIG. 2 is a rear view of the absorbent article. 3 is a cross-sectional view taken along the line A-A ′ shown in FIG. The absorbent article 1 according to the present embodiment is, for example, a sanitary napkin.

The absorbent article 1 includes a top sheet 10 that comes into contact with the wearer's skin, a liquid-impermeable back sheet 20 that does not transmit liquid, and an absorber 30. The absorber 30 is disposed between the top sheet 10 and the back sheet 20. Therefore, the absorber 30 is shown with a broken line in FIG.1 and FIG.2. The absorbent body 30 is disposed at a central portion in the longitudinal direction L and the width direction W along the front-rear direction of the absorbent article 1.

The absorbent article 1 includes a wing portion 43 disposed on the outer side in the width direction from the absorber 30 and a flap portion 60 disposed on the outer side in the width direction from the absorber 30 behind the wing portion 43.

The wing portion 43 is configured to be folded back to the non-skin contact surface side of the wearer's underwear and to wrap the underwear and fix the absorbent article to the underwear. The wing portion 43 extends outward in the width direction from the excretion opening contact region of the absorber 30.

The front end 43F and the rear end 43R of the wing part 43 are located on the inner side in the width direction than the wing maximum width position 43WM located on the outermost side in the width direction in the wing part 43. The front end 43F of the wing 43 is located on the inner side in the width direction than the rear end 43R of the wing 43. Therefore, in a state where the wing 43 is folded back to the non-skin contact surface side of the underwear along the longitudinal direction with the fold passing through the front end 43F of the wing 43 as a starting point, the front end 43F of the wing 43 Also, the width of the rear end portion 43R of the wing portion 43 that is wound on the non-skin contact surface side of the underwear becomes longer.

Between the wing portion 43 and the flap portion 60, the wing portion 43 is wider than the wing maximum width position 43 WM located at the outermost side in the width direction and the flap maximum width position 60 WM located at the outermost side in the width direction at the flap portion 60. A constricted portion 45 that is constricted inside is provided.

FIG. 1 illustrates a region RA of the wing portion 43 in the longitudinal direction L, a region RB of the flap portion 60 in the longitudinal direction L, and a region RC of the constricted portion 45 in the longitudinal direction. The constricted portion 45 in the present embodiment is a region including a narrow position 45WN located on the innermost side in the width direction between the wing portion 43 and the flap portion 60. The constricted portion 45 may be a region in the vicinity of the narrow position 45WN. For example, the constricted portion 45 may be a region 5 mm in the front-rear direction from the narrow position 45WN.

In a state where the absorbent article is attached to the underwear, the wing portion in front of the constricted portion 45 is folded back to the non-skin contact surface side of the underwear, and the flap portion 60 behind the constricted portion 45 is attached to the wearer's body. Opposed to each other. Therefore, the end portion of the fold when the wing portion is folded is positioned in the constricted portion, and twisting occurs.

The flap portion 60 is a region extending outward in the width direction from the absorber 30 and extends rearward from the rear end portion of the constricted portion 45. The front end portion of the flap portion 60 is a rear end portion of the constricted portion, and the rear end portion of the flap portion 60 is a portion constricted inside the front and rear regions in the vicinity of the rear end portion of the absorbent article. is there. In the present embodiment, the rear end of the flap portion coincides with a rear end 70R of a dent 70 described later. In addition, the rear side edge part of the flap part 60 may correspond with the rear side edge part of an absorbent article, and does not need to correspond with the rear side edge part of an absorbent article.

The top sheet 10 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 10 covers at least the surface of the absorber 30. The top sheet 10 is not particularly limited as long as it is a sheet-like material having a structure that allows liquid to permeate, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, and a mesh sheet. Either natural fibers or chemical fibers can be used as the woven or non-woven material.

The back sheet 20 has substantially the same length as the top sheet 10. As the back sheet 20, a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene, a breathable resin film, a spunbond, a sheet obtained by bonding a breathable resin film to a nonwoven fabric such as spunlace, or the like can be used. The back sheet 20 is preferably made of a material having flexibility that does not cause a sense of incongruity when worn. The back sheet 20 is desirably liquid-impervious and moisture-permeable, and can be constituted by a microporous sheet obtained by stretching a melt-kneaded inorganic filler such as polyethylene or polypropylene. .

The absorber 30 includes hydrophilic fibers and pulp. The absorber 30 is formed of a material that can absorb body fluid such as menstrual blood. The absorbent body 30 may be formed by laminating hydrophilic fibers or powder by the airlaid method, an airlaid sheet obtained by forming hydrophilic fibers or powder into a sheet shape by the airlaid method, or a tissue (for example, It may be formed by placing pulverized pulp mixed with a superabsorbent polymer on a basis weight of 15 g / m ² ) and wrapping it with a tissue.

The absorbent body 30 according to the present embodiment is configured by wrapping a pulp obtained by laminating cotton-like pulp, synthetic pulp or the like at a basis weight of about 100 to 300 g / m ² with protective paper (not shown). The absorber 30 may have a substantially uniform thickness over the entire surface or a non-uniform thickness. The protective paper is for maintaining the shape of the pulp, and for example, crepe paper or tissue paper can be used.

The absorbent body 30 has a shape extending in the front-rear direction and is approximately one time smaller than the back sheet 20. The length of the absorbent body 30 in the width direction W corresponds to the crotch interval of an adult woman and is approximately 50 to 80 mm. The absorber 30 is bonded to the back sheet 20 with an adhesive such as hot melt. Moreover, in this Embodiment, the absorber 30 and the surface sheet 10 are adhere | attached with the hot-melt-adhesive.

The absorbent body 30 is provided so as to include at least the center of the excretion opening contact area where the wearer's excretion opening contacts. The center of the excretory opening contact area coincides with the center in the longitudinal direction and the width direction of the area where the wearer's excretion opening comes into contact. For example, in an absorbent article having a wing portion, the center in the longitudinal direction of the wing portion is the center in the longitudinal direction of the excretory opening contact region. Moreover, in the absorbent article which does not have a wing part, the position where the length dimension of the width direction of an absorber is the shortest becomes the center of the longitudinal direction of an excretion opening | mouth contact | abutting area | region. The excretory opening contact region is included in a region that contacts the wearer's crotch, and is located between the wearer's legs.

Furthermore, the absorbent article 1 includes a side sheet 41 provided outside the absorbent body 30 in the width direction W. Side sheets 41 are provided on the skin contact surfaces of the flap portion 60 and the wing portion 43.

The side sheet 41 is disposed on both sides of the top sheet 10. The side sheet 41 is arrange | positioned like the surface sheet 10 at the skin contact surface side rather than the absorber 30, and comprises a part of surface sheet in this invention. The side sheet 41 can be selected from the same material as the top sheet 10. However, in order to prevent menstrual blood from flowing over the side sheet 41 to the outside of the absorbent article 1, it is preferable to have hydrophobicity or water repellency. The side sheet 41 covers a part of the side edge of the absorber 30 and the wing part 43 and the flap part 60.

The side sheet 41 according to the present embodiment is composed of an air-through nonwoven fabric. Since the air-through nonwoven fabric is soft and soft to the touch, the texture of the flap can be improved. When the flap part 60 is disposed along the body, the feeling of wearing can be further improved by improving the texture of the flap part.

In the wing portion 43 and the flap portion 60, an intermediate sheet 35 is provided between the side sheet 41 and the back sheet 20. The outer end portion in the width direction of the intermediate sheet 35 is disposed on the outer side in the width direction than the outer end portion in the width direction of the absorber 30. In addition, by bringing the intermediate sheet 35 and the absorbent body 30 into close contact with each other through an adhesive or the like, the absorbent body 30 and the intermediate sheet 35 are integrated to exhibit a visual effect that makes the area of the absorbent body 30 wide. it can.

The intermediate sheet 35 is disposed in a part of the wing part 43, a part of the flap part 60, and the constricted part 45. As described above, the constricted portion is likely to be twisted in a state where the wing portion is folded back to the non-skin contact surface side of the underwear. By disposing the intermediate sheet in the constricted portion where the twist occurs, it is possible to suppress the flap portion 60 from becoming hard due to the twist, and to reduce irritation to the skin.

The intermediate sheet 35 is composed of an air-through nonwoven fabric. The air-through nonwoven fabric is soft and soft because the bulk is recovered by blowing hot air through the nonwoven fabric and the hot air blown through the nonwoven fabric. By configuring the intermediate sheet 35 with the air-through nonwoven fabric, the wearing feeling can be further improved when the flap portion 60 is disposed along the body.

By providing the intermediate sheet, a thickness difference or a rigidity difference is formed at the boundary between the area where the intermediate sheet is disposed and the area where the intermediate sheet is not disposed. For example, the flap portion 60 is easily deformed with the end portion of the intermediate sheet as the base point.

Further, the absorbent article is individually wrapped with a film or a non-woven fabric in a state where the absorbent article is folded based on a fold along the longitudinal direction or a fold along the width direction. In the absorbent article folded in this way, folded folds remain when folded, and it may be difficult to expand the absorbent article in a planar shape.

However, for example, by forming the intermediate sheet 35 with an air-through nonwoven fabric having a relatively high degree of freedom of fiber, it becomes difficult to crease and can be easily attached. From such a viewpoint, it is desirable that the intermediate sheet 35 straddles a crease formed when the absorbent article is folded.

The intermediate sheet 35 is intermittently bonded to at least the side sheet 41 via an adhesive. The intermediate sheet according to the present embodiment is bonded to the top sheet 10 and the back sheet 20 through a hot melt adhesive arranged in a spiral shape. By intermittently joining the intermediate sheet 35 and the top sheet 10 or the like, the intermediate sheet 35 can be partially moved relative to the top sheet, and a soft texture can be maintained.

In the absorbent article 1, the peripheral edges of the top sheet 10, the side sheet 41, the intermediate sheet 35, and the back sheet 20 are joined to enclose the absorbent body 30. As a method for joining the top sheet 10 and the back sheet 20, any one or a combination of heat embossing, ultrasonic waves, or hot melt adhesive can be used.

In the back sheet 20, on the surface that comes into contact with the undergarment, an adhesive portion to which an adhesive is applied is provided in a plurality of regions (see FIG. 2). The adhesive portion is provided on the back surface side of the absorbent body, and is provided on the back surface side of the wing portion 43 and the central adhesive portion 51 for fixing the absorbent article 1 to the crotch portion of the underwear. Wing adhesion part 52 for fixing 43, and flap adhesion part 53 provided in the back side of flap part 60, and fixing with the flap part opened to the back body of underwear.

In the state before use, the adhesive is in contact with a release sheet (not shown). The release sheet prevents the adhesive from deteriorating before use. And a peeling sheet peels by a wearer at the time of use.

In addition, in the absorbent article which does not have a peeling sheet, you may be comprised so that it may prevent that an adhesive agent deteriorates before use with the packaging sheet which wraps an absorbent article separately. When the adhesive is in contact with the packaging sheet, it is desirable that the surface of the packaging sheet be subjected to a treatment that allows the adhesive to be peeled without reducing the adhesive strength of the adhesive.

Also, the wing bonding portion 52 and the flap bonding portion 53 are provided in the region where the intermediate sheet 35 is disposed. By providing the intermediate sheet 35, the back sheet 20 can be reinforced. Therefore, even when the back sheet 20 is made of a material having a low basis weight, the strength of the back sheet can be easily maintained, and the back sheet can be prevented from being torn when the absorbent article 1 is peeled off from the underwear after use.

The pressing part 80 which compressed the surface sheet 10 and the absorber 30 in the thickness direction is formed in the absorbent article 1. In addition, the pressing part 80 should just be formed by pressing at least the surface sheet 10 and the absorber 30 in the thickness direction T, and can employ various configurations. For example, it can be formed by pressing or embossing, and the shape thereof may be a lattice network or a honeycomb shape.

The flap portion 60 is formed with a plurality of flap constricted portions in which the length in the width direction is shorter than the length in the width direction of the front and rear regions. The flap constricted portion includes a first flap constricted portion 61 located on the front side and a second flap constricted portion 62 located on the rear side.

The flap portion 60 is a first flap portion 63 positioned in front of the first flap constricted portion 61 and a rear portion of the first flap constricted portion 61 and in front of the second flap constricted portion 62. 2 flap part 64 and the 3rd flap part 65 located in the back rather than the 2nd flap constriction part 62.

The first flap portion 63 is a region from the rear end portion 45R of the constricted portion 45 to the first flap constricted portion 61, and extends outward in the width direction from the rear end portion 45R toward the rear. The first maximum width position (outer end portion) 63WM located on the outermost side in the width direction in the first flap portion 63 is located on the outer side in the width direction with respect to the first flap constricted portion 61. The first maximum width position 63WM is located behind the center of the first flap 63 in the front-rear direction.

The second flap portion 64 is an area from the first flap constricted portion 61 to the second flap constricted portion 62 that becomes the rear end portion of the first flap portion 63, and has a width as it goes rearward from the first flap constricted portion 61. Extends outward in the direction. The second maximum width position (outer end portion) 64WM located on the outermost side in the width direction in the second flap portion 64 is located on the outer side in the width direction with respect to the second flap constricted portion 62. The second maximum width position 64WM is located behind the center of the second flap portion 64 in the front-rear direction.

The third flap portion 65 is a region from the second flap constricted portion 62 to the rear end portion of the flap portion 60 that is the rear end portion of the second flap portion 64, and is directed rearward from the second flap constricted portion 62. As it extends outward in the width direction. The third maximum width position (outer end portion) 65WM located on the outermost side in the width direction in the third flap portion 65 is located on the outer side in the width direction with respect to the second flap constricted portion 62. The third maximum width position 65WM is located behind the center of the third flap portion 65 in the front-rear direction. The third maximum width position 65WM is the maximum width position of the flap portion.

The flap portion 60 and the constricted portion 45 are formed with a recessed portion 70 that is recessed in the thickness direction T. As shown in FIG. 3, the side sheet 41, the intermediate sheet 35, and the back sheet 20 are compressed in the thickness direction from the top sheet side to the back sheet side. In the present embodiment, compression is performed from the side sheet 41 side constituting the top sheet toward the back sheet side. By compressing from the top sheet side toward the back sheet side to form the recessed portion 70, it is possible to prevent the back sheet made of a film from being broken when forming the recessed portion.

The recessed portion extends rearward from the narrow position 45WN of the constricted portion. The front end portion 70F of the recessed portion 70 is the narrow portion 45WN of the constricted portion, and the rear end portion 70R of the recessed portion is the rear end portion of the flap portion. In addition, the front side edge part of a dent part should just be provided in the constriction part, and may correspond with a narrow position, and does not need to correspond. The rear end of the recess may or may not coincide with the rear end of the flap.

The concave portion 70 is a base point at which the flap portion is folded back on the non-skin contact surface side of the underwear in a state where the wing portion 43 is folded back to the non-skin contact surface side of the underwear. When the flap portion 60 is folded back with the recessed portion 70 as a base point, the skin contact surface side of the flap portion on the outer side in the width direction than the recessed portion is disposed to face the wearer. Since the recessed part 70 is compressed toward the back sheet side from the top sheet side, it is dented from the top sheet side to the back sheet side. Therefore, the flap 60 is easily folded back with the recess 70 as a base point.

Further, the recessed portion 70 extends inward in the width direction from the constricted portion 45 toward the rear. According to such a recessed part, when the wing part 43 is folded back and the flap part is folded back with the recessed part as a base point, the area arranged on the non-skin contact surface side is reduced.

The recesses 70 are arranged in pairs with the absorber 30 in between. The distance between the pair of recesses is the shortest in front of the maximum width position of the flap portion. The recess 70 extends outward in the width direction toward the rear after the distance between the pair of recesses is shortened. Therefore, the flap portion can be easily expanded in the rear region.

Furthermore, in the case of an absorbent article that is individually packaged, it is desirable to form a recess so as to straddle the crease formed when the absorbent article is folded. Since the recessed portion 70 is provided across the crease formed when the absorbent article is folded, when the flap portion is folded with the recessed portion 70 as a base point, the absorbent article is folded along the recessed portion 70. Deforms so that the heel extends. Therefore, it becomes easy for the dent part to function stably as the deformation base point of the flap part 60.

Further, the flap portion 60 is formed with a flap recess portion in which the side sheet 41, the intermediate sheet 35 and the back sheet 20 are compressed in the thickness direction. The flap dent portion branches from the dent portion 70 and reaches the first flap constricted portion 61, and the second flap dent portion branches from the dent portion 70 and reaches the second flap constricted portion 62. And a third flap dent 74 that branches off from the dent 72 and reaches the vicinity of the third maximum width position 65WM located outside the third flap 65 in the width direction.

The 1st flap dent part 72, the 2nd flap dent part 73, and the 3rd flap dent part 74 are constituted so that it may extend from the width direction inner side to the width direction outside as it goes back. By forming the flap dent so that it extends from the inner side in the width direction to the outer side in the width direction as it goes backward, the flap dent is along the direction in which the force is applied, so the flap dent becomes the folding point and the flap folds naturally. It is. Therefore, it becomes easy to fit the flap part 60 to the body and the underwear without difficulty. Therefore, disordered wrinkles are unlikely to occur in the flap portion, a deformation without a sense of incongruity can be achieved, and a clean wearing feeling can be obtained.

FIG. 4 is a diagram schematically showing a state where the absorbent article 1 is attached to the underwear. FIG. 5 is a cross-sectional view taken along the line B-B ′ shown in FIG. 4. When the wing portion of the absorbent article is folded back to the non-skin contact surface side of the underwear, it is folded back on the outer side in the width direction than the absorbent body. At this time, the fold line FL formed in the wing portion is positioned on the inner side in the width direction than the recessed portion and the constricted portion before being folded back, and extends in the longitudinal direction along the side portion of the absorber.

Since the constricted part is arranged on the outer side in the width direction than the fold line FL formed in the wing part in a state where the wing part is folded back to the non-skin contact surface side, in the state where the wing part is folded back, The neck part which becomes a root is arrange | positioned at the non-skin contact surface side of underwear, and it can prevent that a neck part hits skin directly. Therefore, it can suppress that the twist part which arises in a constriction part hits skin directly, and the irritation | stimulation to skin can be reduced.

Moreover, since the flap part is folded back via the recess part, the area | region outside the width direction rather than the recess part in a flap part can be arrange | positioned facing a wearer. Therefore, the irritation | stimulation by hitting the edge part of a wing part can be suppressed, arrange | positioning a flap part facing a wearer.

Next, a part of the manufacturing method of the absorbent article 1 according to the first embodiment will be described. In addition, about the method which is not demonstrated, the existing method can be used. The manufacturing method of an absorbent article performs a surface sheet production | generation process as a 1st step. Next, as a second step, a surface sheet joining step is performed. Specifically, the top sheet 10 and the side sheet 41 are bonded by, for example, heat welding.

As the third step, an absorber molding process is performed. Specifically, the absorber 30 is formed by molding pulp as a material of the absorber with a molding drum. In addition, a reverse order may be sufficient as the order of the manufacturing process of the surface sheet of a 1st step and a 2nd step, and the absorber molding process of a 3rd step.

In the fourth step, a joining process is performed. Specifically, the joining process which joins the absorber shape | molded in the 3rd step, and the surface sheet and side sheet which were joined in the 2nd step is performed.

In the fifth step, the first pressing process is performed. Specifically, the absorber 30 and the topsheet 10 are compressed in the thickness direction to form the squeezed portion 80. In the sixth step, a back sheet joining step is performed. Specifically, the absorber, the top sheet, and the like that have formed the compressed parts are joined to the back sheet.

As the seventh step, the second pressing process is performed. Specifically, the side sheet 41, the intermediate sheet 35, and the back sheet 20 are compressed in the thickness direction to form the recess 70. After the above steps, a step of applying an adhesive is provided. The absorbent article which concerns on this Embodiment can be manufactured according to said process.

In a state where the absorbent article is attached to the underwear, the wing portion in front of the constricted portion is folded back to the non-skin contact surface side of the underwear, and the flap portion 60 behind the constricted portion 45 is the body of the wearer. It is arrange | positioned facing. Therefore, the end portion of the fold when the wing portion is folded is positioned in the constricted portion, and twisting occurs.

Since the constricted portion is arranged on the outer side in the width direction than the fold formed in the state where the wing portion is folded back on the non-skin contact surface side of the underwear, the end of the fold is arranged on the non-skin contact surface side of the underwear Is done. Therefore, it is possible to prevent the twisted portion of the edge of the wing portion from directly contacting the skin, and to reduce irritation to the skin due to the fold.

In addition, since the flap portion is folded back through the recess portion, an area on the outer side in the width direction than the recess portion in the flap portion can be arranged facing the wearer. Therefore, the irritation | stimulation by hitting the edge part of a wing part can be suppressed, arrange | positioning a flap part facing a wearer.

As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

In the present embodiment, the inner end in the width direction of the intermediate sheet is disposed on the inner side in the width direction than the outer end in the width direction of the absorber, and the intermediate sheet and the absorber overlap in the thickness direction. . However, for example, the inner end portion in the width direction of the intermediate sheet is arranged on the outer side in the width direction than the outer end portion in the width direction of the absorber, and the intermediate sheet and the absorber are configured not to overlap in the thickness direction. May be.

When the intermediate sheet and the absorbent body do not overlap in the thickness direction, the area between the absorbent body and the intermediate sheet is low in rigidity because the intermediate sheet and the absorbent body are not arranged, compared to the surrounding area. Easy to deform. Therefore, when the wing part is folded back to the non-skin contact surface side of the underwear, the region between the intermediate sheet and the absorber is deformed, and wrinkles and creases caused by twisting are formed in the flap part itself. Can be suppressed.

Also, for example, the rear end portion of the dent portion does not necessarily have to be located at the rear end portion of the flap portion, and may be displaced from the rear end portion of the flap portion. Moreover, the contact surface with respect to the wearer of a flap part does not necessarily need to be comprised with the air through nonwoven fabric. Moreover, the intermediate sheet does not necessarily need to be comprised with an air through nonwoven fabric, and also the intermediate sheet does not necessarily need to be provided.

The recess according to the present embodiment is linear, but may be constituted by, for example, a plurality of dot-like aggregates arranged intermittently. Moreover, although the dent part which concerns on this Embodiment is compressed and formed from the side sheet side which comprises a surface sheet to the back sheet side, for example, it is compressed and formed from the back sheet side to the side sheet side. May be.

Note that the entire contents of Japanese Patent Application No. 2011-217600 (filed on September 30, 2011) are incorporated herein by reference.

It is possible to provide an absorbent article that can reduce irritation caused by a crease formed in a state where it is folded back to the non-skin contact surface side of the underwear of the wing part.

L: Longitudinal direction, S: Underwear, T: Thickness direction, W: Width direction, 1 ... Absorbent article, 10 ... Top sheet, 20 ... Back sheet, 30 ... Absorber, 35 ... Intermediate sheet, 41 ... Side sheet, 43: Wing part, 43F: Front end part, 43R: Rear end part, 43WM ... Wing maximum width position, 45 ... Constricted part, 45R ... Rear end part, 45WN ... Narrow position, 51 ... Center adhesive, 52 ... Wing adhesive, 53 ... Flap adhesive, 60 ... Flap part, 60WM ... Flap maximum width position, 61 ... First flap constriction part, 62 ... Second flap constriction part, 63 ... First flap part, 63WM ... First Maximum width position, 64 ... second flap part, 64WM ... second maximum width position, 65 ... third flap part, 65 ... third maximum width position, 70 ... dent part, 70F ... front end, 70R ... rear end section, 71 ... first recess, 72 ... first flap recess, 73 ... second flap recess, 74 ... third flap recess, 80 ... compression portions

Claims

In an absorbent article having a front-rear direction and a width direction orthogonal to the front-rear direction,
A liquid-permeable surface sheet;
A liquid-impermeable back sheet,
An absorbent body disposed between the top sheet and the back sheet,
On the outer side in the width direction than the absorbent body, a wing part that is folded back to the non-skin contact surface side of the wearer's underwear, and a flap part that is disposed rearward of the wing part are formed,
Between the wing portion and the flap portion, the maximum width position located on the outermost side in the width direction in the wing portion and the maximum width position located on the outermost side in the width direction on the flap portion are bound inward in the width direction. A constricted part is formed,
The flap portion and the constricted portion are formed with a concave portion extending in the thickness direction of the flap portion and extending rearward from the constricted portion,
The recessed portion and the constricted portion are formed on the outer side in the width direction than the fold formed in the wing portion in a state where the wing portion is folded back to the non-skin contact surface side,
In the state where the wing part is folded back to the non-skin contact surface side, the flap part is folded back on the non-skin contact surface side of the underwear with the recessed part as a base point, whereby the skin contact of the flap part An absorptive article constituted so that a field side may be arranged facing the wearer.
2. The absorbent article according to claim 1, wherein the recessed portion extends inward in the width direction as it goes rearward from the constricted portion.
The absorbent article according to claim 1 or 2, wherein a front end portion of the wing portion is positioned on an inner side in a width direction than a rear end portion of the wing portion.
The said recessed part is formed when the said surface sheet and the said back surface sheet are compressed in the thickness direction from the said surface sheet side to the said back surface sheet side. Absorbent article.
Comprising an intermediate sheet disposed between the top sheet and the back sheet;
The absorbent article according to any one of claims 1 to 4, wherein the intermediate sheet is disposed at least in the constricted portion.
The intermediate sheet is disposed in an area where at least the recessed portion is formed in the flap portion,
The absorbent article according to claim 5, wherein the dent is formed by compressing the top sheet, the back sheet, and the intermediate sheet in the thickness direction.