TW202237049A - Absorbent article - Google Patents

Abstract

This absorbent article comprises a body that has a liquid-permeable top sheet provided on the upper side, a liquid-impermeable back sheet provided on the lower side, and an absorbent body provided between the top sheet and the back sheet, wherein a side leakage prevention member comprising a side sheet folded on the outer side of the body in the width direction is disposed on either side of the body, and the side leakage prevention member is fixed to the body and forms a fold capable of rising from the body on the outer side in the width direction.

Description

absorbent article

The present invention relates to absorbent articles.

Absorbent articles such as sanitary napkins, sanitary pads, and incontinence pads are generally absorbent articles having a main body including a top sheet on the top side, a back sheet on the bottom side, and a back sheet arranged between the two sheets. between absorbers.

In such absorbent articles, in order to prevent body fluid from leaking outward in the width direction, that is, so-called side leakage, it is known to provide barrier walls along the longitudinal direction at both ends of the width direction on the top surface side of the main body. Partial structure.

For example, in Patent Document 1, an absorbent article is disclosed that has a liquid-impermeable garment facing layer, a liquid-permeable body facing layer, and an absorbent core positioned between the garment facing layer and the body facing layer, and has a first 1 transverse end and a second transverse end, and comprising a first folded structure and a second folded structure, the first folded structure has an upright shape and is installed adjacent to the first transverse end and imparts a first leakage barrier, the second folded structure configured to fit adjacent to the second transverse end and impart a second leakage barrier; and the absorbent article, with respect to the liquid-permeable body facing layer, is formed along its longitudinal axis with respect to the first leakage when bent into a concave depression. The wall formed by erecting the barrier and the second leakage barrier. [Prior Art Literature] (patent documents)

Patent Document 1: Japanese Patent Application Laid-Open No. 8-336556

[Problem to be solved by the invention] However, since the leakage barrier disclosed in Patent Document 1 has a three-dimensional shape, the outside of the leakage barrier touches the circumference of the legs during wearing, and the wearer may feel the friction of the circumference of the legs and feel uncomfortable. In addition, when the discharge amount of bodily fluid is small, it is also considered that a comfortable fit is given priority. Therefore, there is a demand for an absorbent article that reduces the uncomfortable feeling during wearing while ensuring a certain degree of side leakage prevention function.

In view of the above problems, the problem to be solved by an aspect of the present invention is to provide an absorbent article that can prevent leakage in the width direction and reduce friction around the legs during wearing. [Technical means to solve the problem]

One aspect of the present invention is an absorbent article including a main body having a liquid-permeable top sheet provided on the upper side, a liquid-impermeable back sheet provided on the lower side, and The absorber between the backsheets; wherein side leakage preventing members are disposed on both sides of the main body respectively, which are composed of side panels folded outward in the width direction of the main body, and the side leakage preventing members are fixed A fold that can stand up from the main body is formed on the main body and on the outside in the width direction. [Effect of the invention]

According to one aspect of the present invention, it is possible to provide an absorbent article capable of preventing leakage in the width direction and reducing friction around the legs during wearing.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each drawing, unless otherwise specified, the same or corresponding structure may be denoted by the same code|symbol, and description may be abbreviate|omitted. In addition, the drawings are schematically shown to facilitate understanding of the invention.

The absorbent article 10 according to one embodiment will be described. Fig. 1 is a plan view of an absorbent article 10 according to an embodiment of the present invention, Fig. 2 is a partial sectional view along line I-I of Fig. 1 , and Fig. 3 is a schematic view of an absorbent article 10 according to an embodiment of the present invention. A partial cross-sectional view taken along line I-I in FIG. 1 before the pressure portion 6a is formed.

First, the basic structure of the absorbent article 10 according to this embodiment will be described based on the example of a tampon. As shown in FIGS. 1 and 2, the absorbent article 10 has a main body (absorbent article main body) 8 having a back sheet 2, a top sheet 3, and an absorbent sheet disposed between these two sheets 2, 3. Body 4. Furthermore, a pair of wing portions W, W protruding outward from both end edges in the width direction D2 of the main body 8 are provided. The wings W, W have the function of securely fixing the absorbent article 10 to the underwear by folding back the outside of the crotch portion of the underwear and adhering to the underwear when the absorbent article 10 is worn. When wearing the absorbent article 10, the top sheet 3 side becomes the side facing the skin (skin side, top surface side or upper side), and the back sheet 2 side becomes the side fixed on the underwear (underwear side, bottom surface side or lower side). Fig. 1 is a view of the absorbent article 10 viewed from the top surface side.

As shown in FIG. 1, generally speaking, the main body 8 has a predetermined length in the first direction D1 (long side direction or front-rear direction) D1, and has a predetermined length in the second direction (short side direction or width direction) orthogonal to the first direction D1. ) D2 has a predetermined width and has an elongated shape in the long side direction. The width of the main body 8 is substantially constant in the illustrated example, but it can also be varied across the longitudinal direction D1. As shown in FIG. 1 , the absorbent article 10 can have a substantially line-symmetrical shape with respect to a centerline (longitudinal direction centerline) CL extending in the longitudinal direction D1. In addition, the structure of the absorbent article 10 (including the thickness and density of the absorbent body 4, etc.) may be approximately symmetrical or asymmetrical with respect to the center line as the axis of symmetry.

The length in the longitudinal direction D1 of the absorbent article 10 (full length of the main body 8) is not particularly limited, but can be 150 to 450 mm, preferably 170 to 290 mm. Also, the dimension of the width direction D2 (the width of the main body 8) in the absorbent article 10 is not particularly limited, and can be 50 to 200 mm, preferably 70 to 120 mm.

The absorbent article 10 has a portion (body fluid outlet corresponding portion) Q corresponding to a body fluid outlet such as a vaginal opening of a wearer when worn (illustrated in FIG. 1 for explanation). Furthermore, the main body 8 of the absorbent article 10 can be divided into a central region RM including the above-mentioned bodily fluid outlet corresponding portion Q, a front region RF located in front of the central region RM, and a rear region RR located behind the central region RM. During wearing, the central region RM faces the crotch of the wearer, and is within the range in the longitudinal direction D1 from the front starting point of the wing portion W to the rear starting point. Also, the rear region RR may face the wearer's gluteal cleft.

The back sheet 2 is preferably a liquid-impermeable sheet, and a sheet having at least impermeability, such as an olefin-based resin sheet such as polyethylene or polypropylene, can be used. A laminated nonwoven fabric in which a nonwoven fabric is laminated on a polyethylene sheet or the like, and a laminated sheet of a nonwoven fabric in which a waterproof film is further interposed between the polyethylene sheet or the like and the nonwoven fabric to ensure liquid impermeability substantially can be used. Moreover, it is further desirable to use a moisture-permeable sheet from the viewpoint of preventing stuffiness. As such an impermeable and moisture-permeable sheet, one obtained by melting and mixing an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet and stretching along one or two axes can be used. Microporous sheets, etc.

The top sheet 3 is preferably a liquid-permeable sheet capable of quickly passing body fluids such as menstrual blood, leucorrhea, and urine. As the top sheet 3, a porous or non-porous nonwoven fabric, a porous plastic sheet, and the like are suitably used. As the raw material fiber constituting the nonwoven fabric, a single type or a combination of two or more types of fibers can be used. Examples of such fibers are: synthetic fibers such as olefins such as polyethylene or polypropylene, polyester, and polyamide; rayon or cupro fibers and, such blended fibers; and, natural fibers such as cotton. Moreover, as a processing method of a nonwoven fabric, a spunlace method, a spunbond method, a thermobonding method, a melt blown method, a needle punching method, etc. are mentioned, for example. Among these processing methods, the spunlace method can produce a soft nonwoven fabric, the spunbond method can produce a drape nonwoven fabric, and the thermal bonding method can produce a bulky and soft nonwoven fabric. From a point of view it is better. In addition, composite fibers such as core-sheath fibers having a fiber with a high melting point as a core and a fiber with a low melting point as a sheath, side by side fibers, and split fibers can also be used.

The absorber 4 is not limited as long as it can absorb and hold body fluids, but it preferably contains cotton pulp and a water-absorbent polymer. As the water-absorbent polymer, superabsorbent polymer particulate powder (superabsorbent polymer (SAP)), superabsorbent polymer fiber (superabsorbent fiber (SAF)), and combinations thereof can be used. Examples of the pulp include cellulose fibers such as chemical pulp obtained from wood, dissolving pulp, and artificial cellulose fibers such as rayon and acetate. As a raw material of chemical pulp, broad-leaved wood, softwood, etc. can be used, but softwood is suitably used in terms of fiber length and the like.

In addition, synthetic fibers may be mixed in the absorber 4 . As synthetic fibers, olefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers of these can be used. It is also possible to mix and use two types of these synthetic fibers. In addition, composite fibers such as core-sheath fibers, side-by-side fibers, and split fibers having a fiber with a high melting point as a core and a fiber with a low melting point as a sheath can also be used. In addition, it is also possible to use fibers in which hydrophobic fibers are surface-treated with a hydrophilic agent to impart affinity for body fluids. The absorbent body 4 is preferably manufactured by piling up or airlaid.

The thickness of the absorber 4 can be set within the range of 0.3 to 30 mm, preferably within the range of 1.0 to 15 mm. Overall, the absorber 4 may have a uniform thickness over the entire surface, and may also have a partially swollen structure, for example, a structure that swells a region corresponding to the wearer's bodily fluid outlet when worn. .

The absorbent body 4 may be covered with a wrapping sheet such as crepe paper or nonwoven fabric in order to maintain its shape. The absorber 4 is covered by the wrapping sheet, whereby twisting and tearing of the absorber 4 can be prevented. As the covering sheet, uncolored (that is, white) crepe paper or nonwoven fabric can be used, and colored crepe paper or nonwoven fabric can also be used. In the case of coloring, the color can be set to a color that makes the color of the discharged body fluid not conspicuous, for example, the color can be set to a color close to the color of the body fluid, or a color that is complementary to or close to the color of the body fluid.

At the end of the absorber 4 in the longitudinal direction D1, the outer edges of the back sheet 2 and the top sheet 3 can be bonded together by adhesives such as hot-melt adhesives or by means of bonding such as heat sealing and ultrasonic sealing. Moreover, on the side of the absorber 4, the back sheet 2 and the top sheet 3 can also be joined by the same joining means.

As shown in FIGS. 1 and 2, the absorbent article 10 has side leakage preventing members 5a, 5a on both sides of the main body 8, respectively. The side panel 7 constitutes. The side leakage preventing members 5a, 5a provided on both sides of the main body 8 form convex pleats 51, 51 facing outward in the width direction D2 of the main body 8, respectively. The inner side of the folds 51, 51 is hollow, and its cross-sectional shape is, as shown in FIG. 2, an annular shape (pocket shape) having a rounded end at the folded portion of the fold. During wearing, the pleats are located between the body 8 and the wearer's legs, and the rounded ends of the folded parts can reduce the friction around the legs. In addition, the side leakage preventing members 5a, 5a are fixed to both ends of the main body 8 at the pressing portions 6a, 6a along the longitudinal direction D1. The pleats 51, 51 can stand up from the main body 8 on the outer side in the width direction D2 than the positions fixed to the main body 8, that is, the pressing parts 6a, 6a. That is, the outer ends (front ends) of the pleats 51, 51 in the width direction D2 can freely swing in the vertical direction (thickness direction D3) relative to the main body 8 with the pressing parts 6a, 6a as the base point. Thereby, the movement of the user's legs can be well followed, and the friction around the legs can be further reduced by the round head of the folded part.

At the same time, the side leakage prevention members 5a, 5a formed with such pleats 51, 51 can particularly function to prevent bodily fluids moving outward in the width direction D2 on the top surface of the main body 8. Thereby, while preventing the leakage in the width direction D2, the friction of the leg circumference during wearing can be reduced. Also, the side leakage preventing members 5a, 5a are different from three-dimensional gathers in which elastic members such as rubber are arranged. That is, the side leakage preventing members 5a, 5a are not unevennesses formed by creases approached by contraction of elastic members, etc., but the surface that can be in contact with the skin is a flat surface. Therefore, the side leakage preventing members 5a, 5a can be formed in such a thickness that the wearer hardly feels it during wearing, and it is difficult to generate a sense of incongruity and discomfort.

The side leakage preventing members 5a, 5a formed with folds 51, 51, as shown in FIG. The second turning line L2 is formed by turning back. Thereby, the number of parts can be reduced compared with the case where the pleats 51, 51 are comprised with the side leakage preventing members 5a, 5a separately from a member.

As the side panel 7, it is preferable to use a nonwoven fabric made of one or more fibers selected from natural fibers, synthetic fibers, and regenerated fibers in order to improve the skin feel. As the non-woven fabric, it is preferable to use a soft air-through non-woven fabric in order to reduce friction around the legs. In addition, in order to improve the side leakage prevention function, water-repellent treatment can be applied to the entire surface and part of the surface of the side panel 7 . For example, water repellent treatment may be given to all exposed portions on the top surface side of the side leakage preventing member 5a. Using non-woven fabric as the material of the side leakage preventing member 5a enables the pleats 51 of the side leakage preventing member 5a to be flexibly formed, so that the pleats 51 can follow the user's body better.

(Modification example of side leakage prevention parts) Variations of the side leakage preventing member 5a will be described with reference to FIGS. 4 to 7. Fig. 4 is a view showing one side of a partial cross-sectional view along line I-I in Fig. 1 of a first modification example of the side leakage preventing member 5a according to an embodiment of the present invention. In addition, in FIG. 1 which shows the 1st modification, the outline of the auxiliary plication 52 is abbreviate|omitted. 5 is a view showing one side of the partial cross-sectional view taken along line I-I of FIG. 1 before the pressing portion 6a of the first modification of the side leakage prevention member 5a according to an embodiment of the present invention is formed.

On the underside of the plications 51, 51, as shown in Fig. 4, there may be auxiliary plications 52, 52, respectively. The auxiliary pleats 52 , 52 have a convex shape toward the outside in the width direction D2 of the main body 8 . The auxiliary plica 52, 52 is hollow inside, and its cross-sectional shape is, as shown in FIG. 2 , an annular shape (pocket shape) having a rounded end at the folded part of the plica. Also, the auxiliary pleats 52, 52 are fixed to both sides of the main body 8 by the pressing parts 6a, 6a, like the pleats 51, 51. With this structure, the auxiliary plica 52 lifts the pleat 51 from the lower side to assist the erection of the pleat 51, so that the pleat 51 becomes easy to erect. Thereby, the contact area between the pleats 51 and the leg circumference can be kept constant, and the friction of the leg circumference can be further reduced.

The side leakage preventing members 5a, 5a formed with folds 51, 51 and auxiliary folds 52, 52, as shown in FIG. The first return line L1, the second return line L2, the third return line L3, and the fourth return line L4 are formed by folding back. An extruded portion 6a having a width E1 is formed in the longitudinal direction D1 so as to include the second return line L2 and the fourth return line L4, thereby forming a pleat 51 including the first return line L1 and a third return line. Auxiliary fold 52 of L3. Thereby, the number of parts can be reduced compared to the case where the plications 51, 51 and the auxiliary plications 52, 52 are formed of separate parts.

Also, the second return line L2 may be located outside the fourth return line L4 in the width direction D2, but as shown in FIG. 5, it is preferably located on the inside of the fourth return line L4 in the width direction D2. In this way, the erection of the pleats 51, 51 can be increased, and the contact area between the pleats 51, 51 and the leg circumference can be maintained at a certain state, and the friction of the leg circumference can be further reduced by the round head of the folded part. .

The extruded portion 6a is preferably formed on the return line located outside the width direction D2 among the second return line L2 and the fourth return line L4, or on the outside of the return line in the width direction D2 than the return line located outside the width direction D2. . Thereby, on both sides of the main body 8, one extruded portion 6a is formed on the side panels 7, 7, whereby the side panels 7 can be thermally welded (thermocompression bonded) to each other, and the configuration includes the first The fold 51 of the return line L1, and the auxiliary fold 52 including the third return line L3. At the same time, it is also possible to thermally weld (thermocompress) the side panel 7 and the main body 8, and fix the side leakage prevention member 5a having the pleat 51 and the auxiliary pleat 52 to the main body 8. Therefore, for example, compared with the case of fixing with hot-melt adhesive, it is possible to form the folds 51 and the auxiliary folds 52 that do not impair the feel of the skin while maintaining the original texture of the material of the side panel 7 .

The dimension W2 in the width direction of the auxiliary pleat 52 is preferably shorter than the dimension W1 in the width direction of the pleat 51 . Thereby, the auxiliary plication 52 does not interfere with the function of the plication 51 by contacting the leg. Also, the plication 51 and the auxiliary plication 52 are separated. In other words, there is no junction between the plication 51 and the auxiliary plication 52 . The outer end (tip end) in the width direction D2 of the pleat 51 lifted by the auxiliary pleat 52 can freely swing in the vertical direction (thickness direction D3 ) relative to the auxiliary pleat 52 with the pressing portions 6a, 6a as the base point. Therefore, even if the auxiliary pleats 52 are provided, the movement of the user's legs can be well followed, and the friction around the legs can be further reduced by the rounded ends of the folded parts.

FIG. 6 is a view showing one side of a partial cross-sectional view along line I-I of FIG. 1 of a second modification example of the side leakage preventing member 5a according to an embodiment of the present invention. In addition, in FIG. 1 showing the second modified example, outlines of the auxiliary plication 52 , the second plication 53 , and the second auxiliary plication 54 are omitted. 7 is a view showing one side of the partial cross-sectional view taken along line I-I of FIG. 1 before the pressing portion 6b of the second modification of the side leakage preventing member 5a according to an embodiment of the present invention is formed.

In addition to the pleats 51 and auxiliary pleats 52 of the side leakage prevention member 5a of the first modification, as shown in FIG. 2nd auxiliary fold 54.

In the example shown in FIG. 6, the two sides of the main body 8 are respectively provided with: side leakage prevention members 5a, 5a, which are made of side panels 7 folded outside the width direction D2 of the main body 8; and, the second 2. The side leakage preventing members 5b, 5b are composed of side panels 7 folded inwardly in the width direction D2. The side leakage preventing members 5a, 5a respectively constitute pleats 51, 51 and auxiliary pleats 52, 52 which have a convex shape toward the outside in the width direction D2 of the main body 8. As shown in FIG. The folds 51, 51 and the auxiliary folds 52, 52 have the same structure as that of the above-mentioned first modification, and can exhibit the same effects as those of the first modification. Furthermore, the second side leakage preventing members 5b, 5b respectively form the second pleats 53, 53 having a convex shape toward the inner side in the width direction D2 of the main body 8, and the second auxiliary pleats 54 on the lower side of the second pleats 53, 53. ,54. The inner side of the second plica 53, 53 and the second auxiliary plica 54, 54 is hollow, and its cross-sectional shape, as shown in FIG. Also, the second side leakage preventing members 5b, 5b are fixed to both ends of the main body 8 at the second pressing portions 6b, 6b along the longitudinal direction D1 together with the side leakage preventing members 5a, 5a. The second pleats 53, 53 can stand up from the main body 8 on the inner side in the width direction D2 than the position fixed to the main body 8, that is, the position of the second pressing parts 6b, 6b. That is, the inner ends (tip sides) in the width direction D2 of the second pleats 53, 53 can freely swing vertically relative to the main body 8 with the second pressing portions 6b, 6b as the base point. Therefore, it is difficult to be constrained by the shape and swing of the main body 8 , and can well follow the movement of the user's body, especially preventing bodily fluids moving outward in the width direction D2 on the top surface of the main body 8 . Thereby, the side leakage prevention function of the pleats 51, 51 which can stand outside in the width direction D2 can be strengthened. Therefore, the leakage in the width direction D2 can be further prevented, and the friction of the leg circumference during wearing can be reduced.

In addition, the second auxiliary plica 54, 54 lifts the second plica 53, 53 from below to assist in erecting the second plica 53, 53, so that the erection of the second plica 53, 53 becomes easier. Thereby, the gap between the second folds 53, 53 and the body can be reduced, and the function of preventing bodily fluids moving outward in the width direction D2 on the top surface of the main body 8 can be further enhanced.

Also, the second side leakage preventing members 5b, 5b are different from three-dimensional gathers in which elastic members such as rubber are arranged. That is, the side leakage preventing members 5a, 5a are not unevennesses formed by creases approached by contraction of elastic members, etc., but the surface that can be in contact with the skin is a flat surface. Therefore, the second side leakage preventing members 5b, 5b can be formed in such a thickness that the wearer hardly feels it while wearing it, and it is difficult to generate a sense of incongruity and discomfort.

The side leakage preventing members 5a, 5a formed with the pleat 51 and the auxiliary fold 52, and the second side leakage preventing members 5b, 5b formed with the second pleat 53 and the second auxiliary fold 54, as shown in FIG. One piece of continuous side panels 7, 7, on the outside of the width direction D2 of the main body 8, from the upper side to the lower side, followed by the 5th return line L5, the 6th return line L6, the 7th return line L7 and the 8th return line The line L8 turns back, and is formed by turning back in order from the upper side to the lower side inside the width direction D2 by the ninth turning line L9 , the tenth turning line L10 , the eleventh turning line L11 , and the twelfth turning line L12 . In the region including the sixth return line L6, the eighth return line L8, the tenth return line L10, and the twelfth return line L12, a second extruded portion 6b with a width E2 is formed in the longitudinal direction D1, thereby constituting a The fold 51 of the fifth reentry line L5, the auxiliary plication 52 including the seventh reentry line L7, the second fold 53 including the ninth reentry line L9, and the second auxiliary fold 54 including the eleventh reentry line L11. Thereby, the number of parts can be reduced compared to the case where the plications 51, 51, the auxiliary plications 52, 52, the second plications 53, 53, and the second auxiliary plications 54, 54 are configured by separate parts. Moreover, the pleats 51, 51, the auxiliary plications 52, 52, the second plications 53, 53, and the second auxiliary plications 54, 54 can be formed by using the common second pressing part 6b, and the manufacturing steps can be simplified.

Also, the distance W3 between the sixth return line L6 and the tenth return line L10, and the distance W4 between the eighth return line L8 and the twelfth return line L12 are both smaller than the width E2 of the second extruding portion 6b, and the distance W4 is smaller than the width E2 of the second pressing portion 6b. Since the distance W3 is small, the extrusion heat from the upper part will be transferred to the eighth return line L8 and the twelfth return line L12, so two upper and lower return lines can be formed with one extrusion operation.

The second extrusion part 6b can make the side panels 7 thermally welded to each other to form the folds 51, the auxiliary folds 52, the second folds 53, and the second auxiliary folds 54, and can make the side panels 7 and the main body 8 thermally welded to form the folds. The side leakage preventing member 5 a having the pleat 51 and the auxiliary fold 52 and the second side leakage preventing member 5 b having the second pleat 53 and the second auxiliary fold 54 are fixed on the main body 8 . Therefore, for example, compared with the case of using hot melt adhesive, the original texture of the raw material of the side panel 7 can be maintained, and the folds 51, auxiliary folds 52, second folds 53, and second auxiliary folds 54 can be formed without impairing the touch of the skin. .

In addition, in this embodiment, although the absorbent article 10 which has the wing part W, W was shown, it may be an absorbent article which does not have the wing part W, W.

As mentioned above, although embodiment was demonstrated, the said embodiment is a mere illustration, and this invention is not limited to the said embodiment. The above-described embodiments can be implemented in other various forms, and various combinations, omissions, substitutions, changes, and the like can be implemented without departing from the gist of the invention. These embodiments and modifications are included in the scope and gist of the invention, and are also included in the inventions described in the claims and their equivalents.

Hereinafter, specific aspects of the present invention will be described.

(Note 1) Regarding the aspect of appendix 1, it is an absorbent article including a main body having a liquid-permeable top sheet provided on the upper side, a liquid-impermeable back sheet provided on the lower side, and a liquid-impermeable back sheet provided on the top sheet and the above-mentioned Absorbent between backsheets; Wherein, on both sides of the above-mentioned main body, side leakage preventing components are arranged respectively, which are composed of side panels folded outside the width direction of the above-mentioned main body, and the above-mentioned side leakage preventing components are fixed on the aforementioned main body, and on the aforementioned A pleat that can stand up from the main body is formed on the outside in the width direction.

According to the aspect of the above-mentioned supplementary note 1, the side leakage preventing members disposed on both sides of the main body form pleats that can stand up from the main body on the outside in the width direction of the main body. Therefore, when wearing, the pleats are located between the main body and the wearer's legs, and the front end side can swing freely relative to the main body, so it can well follow the movement of the user's legs, and can be folded by the circle of the folded part. The head further reduces the friction of the leg circumference. Also, by forming the side leakage prevention member with such folds, The function of preventing side leakage can be exhibited, especially the function of preventing bodily fluid moving outward in the width direction on the top surface of the main body can be exhibited. Furthermore, since the side leakage preventing member having pleats can be constituted by one continuous side panel, the number of parts can be reduced.

(Note 2) Regarding the form of supplementary note 2, the dimension of the width direction of the said auxiliary plication is shorter than the dimension of the width direction of the said fold including the auxiliary plication located on the lower side of the said fold.

According to the form of the above-mentioned supplementary note 2, since the auxiliary fold is raised from the lower side to assist the erection of the pleat, the pleat becomes easy to stand up, and the contact area between the pleat and the leg circumference can be maintained in a constant state, and can be further improved. Reduces friction around the legs. Furthermore, since the dimension in the width direction of the auxiliary plication is shorter than that in the width direction, the auxiliary plication does not interfere with the function of the plication by contacting the legs.

(Note 3) Regarding the form of appendix 3, the aforementioned fold and the aforementioned auxiliary plica are separated.

According to the form of the above-mentioned supplementary note 3, since the fold lifted by the auxiliary fold can swing freely relative to the auxiliary fold and the main body, even if the auxiliary fold is provided, it can follow the movement of the user's legs well, and can further reduce the Friction around the legs.

(Note 4) Regarding the form of supplementary note 4, wherein, the aforementioned side panels are folded sequentially from the upper side to the lower side by the first folded line, the second folded line, the third folded line, and the fourth folded line; The reentry line, the aforementioned auxiliary fold includes the aforementioned third reentrant line.

According to the aspect of the above-mentioned appendix 4, since the pleats and the auxiliary pleats can be formed by folding back one continuous side panel, the number of parts can be reduced.

(Note 5) Regarding the form of supplementary note 5, wherein the side leakage prevention member is fixed to the main body by a pressing part; the pressing part is formed between the second turning line and the fourth turning line in the longitudinal direction. The folding line located on the outer side in the width direction, or is closer to the outer side in the width direction than the folding line located on the outer side in the width direction.

According to the aspect of the above-mentioned supplementary note 5, on the return line located on the outer side in the width direction among the second return line and the fourth return line, or on the outer side in the width direction than the return line located on the outer side in the width direction, an extrusion is formed in the longitudinal direction. In the pressure part, the original texture of the material of the side panels can be maintained, and folds and auxiliary folds that do not impair the touch of the skin can be formed.

(Note 6) Regarding the aspect of supplementary note 6, the second folding line is located on the inner side in the width direction of the main body than the fourth folding line.

According to the form of the above-mentioned supplementary note 6, the uprightness of the pleats can be increased, and the contact area between the pleats and the leg circumference can be maintained at a constant state, and the friction of the leg circumference can be further reduced by the round head of the folded part.

(Note 7) Regarding the form of supplementary note 7, wherein the second side leakage preventing member is arranged on both sides of the body, which is composed of the side panel folded inside the width direction of the body, and the second side leakage preventing The member is fixed to the main body, and a second pleat that can stand up from the main body is formed on the inner side of the main body in the width direction.

According to the aspect of the above-mentioned appendix 7, in addition to the aforementioned pleats that can stand outside the width direction of the main body, there are second pleats that can stand up from the main body inside the width direction on both sides of the main body. Since the front end side of the second pleat can swing freely relative to the main body, it is difficult to be constrained by the shape and swing of the main body, and can well follow the movement of the user's body, and can strengthen the above-mentioned function that can be erected on the outside in the width direction. Fold prevent side leakage function. Moreover, since the side leakage preventing member having the second pleat can be constituted by one continuous side panel, the number of parts can be reduced.

(Note 8) Regarding the form of appendix 8, there is a second auxiliary fold located below the second fold; The 6th return line, the 7th return line and the 8th return line are turned back, and on the inside of the width direction of the aforementioned main body, from the upper side to the lower side, the 9th return line, the 10th return line, the 11th return line and The twelfth reentrant line reentrants; the aforementioned fold includes the aforementioned fifth reentrant line, the aforementioned auxiliary fold includes the aforementioned seventh reentrant line, the aforementioned second fold includes the aforementioned ninth reentrant line, and the aforementioned second auxiliary plica includes the aforementioned 11th reentrant line.

According to the form of the above-mentioned supplementary note 8, the second auxiliary plication lifts the second fold from the lower side to assist the erection of the second fold, so that the second fold becomes easy to erect, and in particular, it is possible to further strengthen the support for the upward movement on the top surface of the main body. Function to stop body fluids moving outward in the width direction. In addition, the pleats, auxiliary pleats, second pleats, and second auxiliary pleats can be constructed by folding back one continuous side panel, so that the number of parts can be reduced.

(Note 9) Regarding the form of Supplementary Note 9, in the area including the aforementioned 6th folded line, the aforementioned 8th folded line, the aforementioned 10th folded line, and the aforementioned 12th folded line, there is formed a 6th folded line compressed in the longitudinal direction. 2 extrusion part.

According to the aspect of the above-mentioned Supplementary Note 9, in the region including the sixth return line, the eighth return line, the tenth return line, and the twelfth return line, an extruded portion is formed in the longitudinal direction, thereby maintaining the stability of the side panels. The original texture of the raw material, and the formation of folds, auxiliary folds, second folds, and second auxiliary folds that do not impair the touch of the skin. In addition, the pleats, the auxiliary plications, the second plication, and the second auxiliary plication can be formed by using the common pressing part, and the number of parts can be reduced.

This international application claims priority based on Japanese Patent Application No. 2021-057750 for which it applied on March 30, 2021, and uses all the content of the said 2021-057750 application in this international application.

2: Back film 3: Top sheet 4: Absorber 5a: Side leakage prevention parts 5b: Second side leakage prevention part 51:fold 52: Auxiliary fold 53:2nd fold 54: Second auxiliary fold 6a: extrusion part 6b: The second extrusion part 7: side piece 8: Ontology 10: Absorbent articles CL: Front-to-back direction (long side direction) center line L1: 1st return line L2: the second return line L3: The 3rd return line L4: The 4th return line L5: The 5th return line L6: The 6th return line L7: The 7th switchback line L8: The 8th return line L9: the 9th return line L10: the 10th return line L11: the 11th return line L12: The 12th return line RF: front area RM: central region RR: rear area D1: 1st direction (long side direction or front-back direction) D2: Second direction (short side direction or width direction) D3: 3rd direction (up-down direction or thickness direction) Q: Corresponding part of body fluid outlet W: wing

Fig. 1 is a plan view of an absorbent article according to one embodiment of the present invention. FIG. 2 is a partial cross-sectional view along line I-I of FIG. 1 . Fig. 3 is a partial cross-sectional view along line I-I of Fig. 1 before forming a squeeze portion of an absorbent article according to an embodiment of the present invention. 4 is a view showing one side of a partial cross-sectional view taken along line I-I in FIG. 1 of a first modification example of a side leakage preventing member according to an embodiment of the present invention. 5 is a view showing one side of a partial cross-sectional view taken along line I-I of FIG. 1 before forming a pressing portion of a first modification example of the side leakage preventing member according to an embodiment of the present invention. 6 is a view showing one side of a partial sectional view taken along line I-I in FIG. 1 of a second modification example of the side leakage preventing member according to an embodiment of the present invention. 7 is a view showing one side of a partial cross-sectional view taken along line I-I of FIG. 1 before forming a pressing portion of a second modification example of the side leakage preventing member according to an embodiment of the present invention.

Domestic deposit information (please note in order of depositor, date, and number) none Overseas storage information (please note in order of storage country, institution, date, and number) none

3: Top sheet

4: Absorber

5a: Side leakage prevention parts

51:fold

6a: extrusion part

7: side piece

8: Ontology

10: Absorbent articles

CL: Front-to-back direction (long side direction) center line

RF: front area

RM: central region

RR: rear area

D1: 1st direction (long side direction or front-back direction)

D2: Second direction (short side direction or width direction)

Q: Corresponding part of body fluid outlet

W: wing

Claims (9)

An absorbent article comprising a main body having a liquid-permeable top sheet provided on the upper side, a liquid-impermeable back sheet provided on the lower side, and an absorber provided between the top sheet and the back sheet ; Wherein, on both sides of the above-mentioned main body, side leakage preventing components are arranged respectively, which are composed of side panels folded outside the width direction of the above-mentioned main body, and the above-mentioned side leakage preventing components are fixed on the aforementioned main body, and on the aforementioned A pleat that can stand up from the main body is formed on the outside in the width direction. The absorbent article according to claim 1, further comprising auxiliary pleats positioned below the pleats, wherein the dimension in the width direction of the auxiliary pleats is shorter than the dimension in the width direction of the pleats. The absorbent article according to claim 2, wherein the pleats are separated from the auxiliary pleats. The absorbent article as described in claim 2 or 3, wherein the side panels are folded sequentially from the upper side to the lower side by the first folding line, the second folding line, the third folding line, and the fourth folding line ; The plication includes the first reentry line, and the auxiliary fold includes the third reentry line. The absorbent article according to claim 4, wherein the side leakage prevention member is fixed to the main body by a pressing portion; The pressing portion is formed in the longitudinal direction on a folding line located on the outer side in the width direction among the second folding line and the fourth folding line, or on the outer side in the width direction than the folding line located on the outer side in the width direction. . The absorbent article according to claim 4 or 5, wherein the second folding line is located on the inner side in the width direction of the main body than the fourth folding line. The absorbent article according to claim 2 or 3, wherein a second side leakage preventing member is disposed on both sides of the main body, and is composed of the side panels folded inside in the width direction of the main body. The second side leakage prevention member is fixed to the main body, and a second pleat that can stand up from the main body is formed on the inner side of the main body in the width direction. The absorbent article according to claim 7, which has a second auxiliary fold positioned below the second fold; The aforementioned side panels are folded on the outside in the width direction of the aforementioned main body, from the upper side to the lower side, in order of the fifth folding line, the sixth folding line, the seventh folding line, and the eighth folding line. On the inner side of the direction, from the upper side to the lower side, the 9th retracement line, the 10th retracement line, the 11th retracement line and the 12th retracement line are followed in turn; The fold includes the fifth reentry line, the auxiliary fold includes the seventh reentry line, the second fold includes the ninth reentry line, and the second auxiliary fold includes the eleventh reentrant line. The absorbent article according to claim 8, wherein in the region including the sixth return line, the eighth return line, the tenth return line, and the twelfth return line, there is formed a line that is squeezed in the longitudinal direction. The second extruded part formed by pressing.

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