JP7209600B2 - absorbent article - Google Patents

Description

The present invention relates to an absorbent article such as a sanitary napkin, a panty liner, an incontinence pad, etc., and more particularly to an absorbent article in which side flaps on both sides of a blood discharge port facing portion stand up against the skin when worn.

Conventionally, as the absorbent article, cotton-like pulp or the like is sandwiched between a liquid-impermeable back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric and a liquid-permeable top sheet such as a nonwoven fabric or a liquid-permeable plastic sheet. and the back sheet having an absorbent body interposed therebetween, side sheets extending substantially over the entire length in the longitudinal direction on both sides of the skin-contacting surface side, and extending laterally beyond the absorbent body; There is known one in which a side flap portion is formed by a joint portion with a side sheet without an absorbent body interposed therebetween.

In absorbent articles such as so-called light daily sanitary napkins and water-absorbing panty liners, which are mainly used when the amount of blood discharged is small, elastic members are provided along the longitudinal direction on both sides of the skin-contacting side. However, there are some garments that are not provided with three-dimensional gathers that stand up on the skin side by the contractile force of the elastic stretchable member. Such an absorbent article has advantages such as no discomfort when worn, convenient to carry because it is thin and light, and does not affect outerwear. There is a drawback that a gap is likely to be formed between and the wearer is likely to feel uneasy about leakage.

As a technique for improving the fit when worn, in the following Patent Document 1, in the front-back direction range from the blood discharge port facing part to the gluteal cleft facing part, on both sides at a predetermined front-back direction position, the front and rear back surfaces The side darts are joined together to form side darts, and the portion between the side darts is configured as a bulging portion that bulges to the front side due to the difference in length in the front and back direction and fits into the hollow of the body. disclosed. Further, in Patent Document 2 below, an elastic stretchable sheet that is stretched in the longitudinal direction and fixed to the absorbent article by fixing portions provided at least on both sides in the longitudinal direction is provided, and in the longitudinal direction of the absorbent article a concave three-dimensional shape is formed on the skin contact surface side, and in the width direction of the absorbent article, a convex three-dimensional shape on the skin contact surface side is formed in the width direction center in the region between the pair of fixing portions; A segmented absorbent article is disclosed.

JP 2012-135520 A JP-A-11-299822

In the absorbent article described in Patent Document 1, forming the side darts swells the widthwise central portion between the side darts and makes it easier to fit on the skin surface. In addition, the fit between both sides of the absorbent article and the skin surface is deteriorated, and liquid leakage may occur. Similarly, in the absorbent article described in Patent Document 2, if the three-dimensional gathers are not provided, the fit of both sides may be deteriorated, and liquid leakage may occur.

Therefore, the main object of the present invention is to improve the fit to the body when worn even in an absorbent article that does not have three-dimensional gathers that stand up on the skin side on both sides of the skin contact surface side, and prevent liquid leakage. To provide an absorbent article that prevents

In order to solve the above problems, as the present invention according to claim 1, an absorbent body is interposed between a liquid-permeable topsheet and a liquid-impermeable backsheet, and absorbent material is provided on both sides of the absorbent body. In an absorbent article in which a side flap portion is formed in which the body does not intervene,
The side flap portion is not provided with a wing-shaped flap that is folded back so as to involve the outside of the crotch portion of the underwear when worn,
In the absorbent article, the side flap portion is folded toward the skin contact surface along a longitudinal fold line passing through the side edge or the outer side of the absorbent body, and at least the front side position of the blood discharge port facing portion Individually packaged by being folded in the longitudinal direction along the width direction folding lines passing through the rear positions,
The absorbent article is provided, wherein the side flap portion is provided with a compressed portion starting from an intersection point of the longitudinal fold line and the width direction fold line or a position in the vicinity thereof.

The invention according to claim 1 is an absorbent article in which the side flap portions are not provided with wing-shaped flaps projecting sideways. In such an absorbent article, the side flap portion is folded in the width direction along the longitudinal fold line toward the skin contact surface side, and then folded along the width direction fold line in the same manner as in the absorbent article provided with the wing-shaped flaps. Individually packaged by folding in the longitudinal direction. At this time, the side flap portion is provided with a compressed portion whose starting point is the intersection of the longitudinal fold line and the width direction fold line or a position in the vicinity thereof. As a result, when it is removed from the individual packaging and worn on underwear, the sections sandwiched by the compressed sections provided in front and back of the left and right side flap sections (the front and back sections corresponding to both sides of the blood discharge port facing section) The side flap part) starts at the intersection of the longitudinal fold line and the width direction fold line or a position in the vicinity thereof as a base end, and rises on the skin side due to the folding habit during individual packaging. Since the raised side flaps act like three-dimensional gathers and the raised side ends fit the body, an elastic stretchable member is arranged on both sides of the skin contact surface side, and the elastic stretchable member contracts. Even with an absorbent article that is not provided with three-dimensional gathers that stand up on the skin side by force, the gap between both sides of the absorbent article and the body is reduced, and liquid leakage is less likely to occur.

As the present invention according to claim 2, the absorbent according to claim 1, wherein the compressed portion is formed in a shape that gradually inclines to the opposite side in the longitudinal direction to the blood discharge port facing portion toward the width direction outer side. Goods are provided.

In the invention according to claim 2, when the absorbent article is taken out from the individual packaging, the side flaps easily stand up on the skin side with the compressed portion as the base end, so that the compressed portion is directed outward in the width direction. It is formed in a shape that gradually inclines in the longitudinal direction opposite to the blood discharge port facing portion.

As the present invention according to claim 3, a width direction fold line compression portion is formed along a section on the width direction outer side of the longitudinal direction fold line in the width direction fold line adjacent to the front side and the rear side of the blood discharge port facing portion. 2. Longitudinal direction fold line pressing portions are provided along the longitudinal direction fold line between the width direction fold lines adjacent to the front side and the rear side of the blood discharge port facing portion. An absorbent article according to any one is provided.

In the invention according to claim 3, along the width direction folding line and the longitudinal direction folding line arranged between the pressing portions arranged in front and behind the left and right side flap portions, the width direction folding line upper pressing portion and the longitudinal folding line are arranged, respectively. A compression section is provided on the longitudinal fold line. For this reason, the U-shaped portions surrounded by the respective folding lines can easily stand up on the skin side with the pressed portions formed on the respective folding lines as base ends.

As the present invention according to claim 4, there is provided the absorbent article according to any one of claims 1 and 2, in which a compressed portion is not provided along the width direction fold line and the longitudinal direction fold line.

In the invention according to claim 4, it is an example of a form in which a compressed portion is not provided along the width direction folding line and the longitudinal direction folding line. The side flap part of the section sandwiched between the front and rear compression parts due to the habit tends to stand up on the skin side.

As the present invention according to claim 5, the absorbent article according to any one of claims 1 to 3, wherein the pressing part is formed in a shape that gradually widens toward the width direction outer side in a linear or curved line of equal width. is provided.

In the invention according to claim 5, the shape of the pressing portion, which is the rising proximal end of the side flap portion, is defined.

As the present invention according to claim 6, the side flap portion is provided with a bulging portion that bulges outward in the width direction, and when the side flap portion stands up on the skin side when worn, the tip of the bulging portion There is provided an absorbent article according to any one of claims 1 to 5, which is adapted to be in close contact with the skin.

In the sixth aspect of the invention, the side flap portion is provided with a bulging portion that bulges outward in the width direction. When taken out from the individual packaging, the side flap part of the section sandwiched between the front and rear compressed parts rises on the skin side with the compressed part as the base end, so that the bulging part rises on the skin side when worn, The tip is designed to adhere to the skin surface.

As the present invention according to claim 7, there is provided the absorbent article according to any one of claims 1 to 6, wherein the side flap portions are temporarily fixed in a folded state along the longitudinal folding line and individually packaged. be done.

In the invention according to claim 7, when the absorbent article is individually packaged, the side flap section is folded between the folding of the side flap section toward the skin contact surface side and the folding of the absorbent article in the longitudinal direction. The side flap portions are temporarily fixed while being folded along the longitudinal folding lines so that the folded state in the width direction is not released.

As described in detail above, according to the present invention, even in an absorbent article that does not have three-dimensional gathers that stand up toward the skin on both sides of the skin contact surface side, the fit to the body when worn is improved. and prevent liquid leakage.

BRIEF DESCRIPTION OF THE DRAWINGS It is a partially broken development view of the sanitary napkin 1 which concerns on this invention. FIG. 2 is a view taken along line II-II of FIG. 1; FIG. 2 is a view taken along line III-III in FIG. 1; It is a top view which shows the individual packaging procedure (the 1). It is a top view which shows the individual packaging procedure (the 2). It is a top view which shows the individual packaging procedure (the 3). It is a perspective view which shows the state taken out from individual packaging. FIG. 8 is a view taken along line VIII-VIII of FIG. 7; (A) and (B) are plan views of the sanitary napkin 1, showing modifications of the compressing portion 12. FIG. 1 is a plan view of a sanitary napkin 1; FIG. Fig. 10 is a plan view of a sanitary napkin 1 according to a modified example;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIGS. 1 to 3, a sanitary napkin 1 according to the present invention includes a liquid-impermeable back sheet 2 made of a polyethylene sheet or the like placed on the non-skin side, and a liquid-impermeable back sheet 2 on the skin side. , a liquid-permeable surface sheet 3 through which menstrual blood, vaginal discharge, etc. (hereinafter also referred to collectively as body fluids) can quickly permeate, and cotton-like pulp or synthetic pulp, etc., interposed between the two sheets 2 and 3. and side sheets 7, 7 provided on both sides of the skin contact surface side over substantially the entire length in the longitudinal direction, and around the absorbent body 4, the upper and lower edges In the section, the outer edges of the back sheet 2 and the top sheet 3 are joined by a joining means such as hot-melt adhesive, heat sealing, ultrasonic sealing, or the like to form an end flap section EF in which the absorber 4 is not interposed. In addition, the back sheet 2 and the side sheets 7, which extend laterally beyond the absorbent body 4 at both side edges thereof, are joined by a joining means such as hot-melt adhesive, heat sealing, ultrasonic sealing, or the like. The side flap portion SF is formed without the absorbent body 4 interposed therebetween. In the illustrated example, the absorbent body 4 is surrounded by an enveloping sheet 5 made of crepe paper or non-woven fabric in order to retain the shape of the absorbent body 4 and improve diffusion. It does not have to be provided. A second sheet made of a hydrophilic non-woven fabric or the like having substantially the same shape as the topsheet 3 may be disposed adjacent to the non-skin side of the topsheet 3 .

In the sanitary napkin 1 according to the present invention, the laterally inner side portions of the side sheets 7 do not form three-dimensional gathers standing on the skin side on both sides of the skin contact surface side. In other words, the inner portion of the side sheet 7 in the width direction is not provided with an elastic stretchable member, and the structure is such that the elastic stretchable member does not stand up against the skin due to the contractile force of the elastic stretchable member. It is joined in a layered state on the side of the skin.

The blood discharge port facing portion H is a region that is arranged to face the blood discharge port portion (including the vaginal opening) of the wearer when the sanitary napkin 1 is worn. The range is located within a section between width direction folding lines W1 and W2, which will be described later.

The structure of the sanitary napkin 1 will be further detailed below.
For the back sheet 2, a sheet material having at least water impermeability such as polyethylene is used, but it is desirable to use a material having moisture permeability from the viewpoint of preventing stuffiness. The water-impervious/moisture-permeable sheet material is produced by melting and kneading an inorganic filler into an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet uniaxially or biaxially. A sheet is preferably used. On the non-skin side (outer surface) of the back sheet 2, one or a plurality of adhesive layers 9, 9, . . . are formed along the longitudinal direction of the napkin. 1 is fixed to the underwear. As the back sheet 2, a polylaminated nonwoven fabric obtained by laminating a plastic film and a nonwoven fabric may be used.

Next, for the surface sheet 3, a perforated or non-perforated nonwoven fabric, a porous plastic sheet, or the like is preferably used. The material fibers that make up the nonwoven fabric include synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, as well as recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a method, a spunbond method, a thermal bond method, a meltblown method, a needle punch method, or the like can be used. Among these processing methods, the spunlace method is superior in flexibility and drapeability, and the thermal bond method is superior in bulkiness and compression recovery. When a large number of through holes are formed in the surface sheet 3, body fluids are rapidly absorbed, and the dry touch property is excellent. The fibers of the non-woven fabric may be either long fibers or short fibers, but preferably short fibers are used in order to produce the feel of a terry cloth. Also, in order to facilitate embossing, it is preferable to use olefin fibers such as polyethylene or polypropylene having a relatively low melting point. In addition, composite fibers of core-sheath type fibers, side-by-side type fibers, and split type fibers having a high melting point fiber as a core and a low melting point fiber as a sheath can also be preferably used.

The absorbent body 4 interposed between the backsheet 2 and the topsheet 3 is made of, for example, pulp and superabsorbent polymer. The superabsorbent polymer is mixed, for example, in the form of granular powder in the pulp that constitutes the absorbent body. Examples of the pulp include chemical pulp obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp with a longer fiber length is more functional and functional than hardwood pulp. It is preferably used in terms of price.

The sanitary napkin 1 is preferably a thin slim napkin in which the fabric weight of the absorbent body 4 is low. By reducing the basis weight of the absorbent body 4, the absorption capacity per unit area of the absorbent body 4 is reduced, and the body fluid is easily diffused in the planar direction. Therefore, by erecting the side flap portions SF, the effect of the present invention of preventing leakage from the end portions of the absorbent body 4 can be fully exhibited. The basis weight of the pulp is 50 to 300 g/m ² , preferably 80 to 220 g/m ² , and the basis weight of the superabsorbent polymer is 30 to 180 g/m ² , preferably 50 to 160 g/m 2 . ² is better. The basis weight of these pulp and superabsorbent polymer does not need to be constant, and may be changed depending on the part of the absorbent. For example, in the blood outlet facing portion H, a highly absorbent portion can be formed in which the basis weight of pulp and superabsorbent polymer is increased.

Moreover, as the absorbent body 4, an air-laid absorbent body capable of reducing bulk, or a polymer sheet in which a superabsorbent resin is arranged between two layers of non-woven fabric may be used.

Synthetic fibers may be mixed in the absorber 4 . For the synthetic fibers, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. A mixture may also be used. In addition, composite fibers such as core-sheath type fibers, side-by-side type fibers, and split type fibers having a high-melting-point fiber as a core and a low-melting-point fiber as a sheath can also be used. In the case of hydrophobic fibers, the synthetic fibers are preferably surface-treated with a hydrophilizing agent so as to have affinity for body fluids.

In the illustrated example, the width dimension of the topsheet 3 is substantially equal to the width of the absorbent body 4, as shown in the cross-sectional views of FIGS. A side sheet 7 different from the top sheet 3 is provided on the outer side. A side sheet 7 is provided which is constructed using a treated or hydrophilic treated nonwoven fabric material.

The side sheet 7 may be made of natural fiber, synthetic fiber, regenerated fiber, or the like, and may be formed by an appropriate processing method. It is better to use an elevated nonwoven fabric. Specifically, it is desirable to use a non-woven fabric with a basis weight of 13 to 23 g/m ² , and in order to reliably prevent permeation of body fluids, silicone-based, paraffin-based, alkylchromic chloride-based water repellents, etc. A water-repellent nonwoven fabric coated with is preferably used.

As shown in FIGS. 2 and 3, the side sheets 7 are bonded with an adhesive such as hot-melt over a range from a predetermined inner position to the outer edge of the back sheet 2 at the outer portion of the width direction middle portion. Laminated sheet portions of the side sheets 7 and the back sheet 2 form side flap portions SF on both sides of the absorbent body 4 in which the absorbent body 4 is not interposed. The inner side portion of the side sheet 7 is laminated on the skin side of the topsheet 3 and adhered to the absorber 4 side (the skin side of the topsheet 3).

In the present sanitary napkin 1, the side flap portions SF are not provided with wing-shaped flaps that are folded back so as to involve the outside of the crotch portion of the shorts when worn on the shorts. The side edge of the sanitary napkin 1 is positioned inside the side edge of the crotch portion of the shorts when worn on the shorts, and is formed in a shape that does not protrude outside the outline of the opening around the leg of the shorts. The sanitary napkin 1 is worn so that the side part of the sanitary napkin 1 is not caught between the sanitary napkin 1 and the skin surface. The side edges of the side flap portion SF (outline lines on both sides of the sanitary napkin 1) may be straight lines parallel to the longitudinal center line, curved lines bulging inward or outward in the width direction, or a combination thereof. Furthermore, a wavy line that repeats unevenness in the width direction may be superimposed. Further, as will be described later in detail, the intermediate portion in the longitudinal direction may be formed in a shape that bulges outward in the width direction.

As shown in FIG. 1, the skin-contacting surface of the topsheet 3 in the body portion where the absorbent body 4 intervenes blocks body fluids diffusing outward and absorbs and retains them in the absorbent body 4. It is preferable that the embossed grooves 8 recessed on the non-skin side are formed in a predetermined pattern in order to make the garment easier to wear, to improve fit to the body, to improve the design and to improve the appearance. The embossed grooves 8 are recesses integrally recessed from the topsheet 3 to the absorbent body 4 by squeezing the outer surface of the topsheet 3 . In the illustrated example, the embossed grooves are formed in a substantially oval shape that surrounds the periphery of the blood discharge port-facing portion H, but each side of the blood discharge port-facing portion H has one or a plurality of embossed grooves spaced apart in the width direction. or decorative embossed grooves may be provided on the front and rear sides of the blood discharge port facing portion H, respectively.

As shown in FIG. 1, the non-skin-contacting surface (the outer surface of the backsheet 2) of the main body portion, in which the absorbent body 4 is interposed between the topsheet 3 and the backsheet 2, is provided for fixing to underwear. One or more anti-slip adhesive layers 9, 9... are formed along the longitudinal direction of the napkin. The slip-preventing pressure-sensitive adhesive layer 9 is releasably covered with a release sheet (not shown) in an individual packaging state. As for the release sheet, a release treatment liquid such as a silicone resin, a fluorine resin, or a tetrafluoroethylene resin is applied or sprayed to the contact surface of the anti-slip adhesive layer 9, and then released. Stamped paper or plastic sheets can be used. It should be noted that the film itself or the nonwoven fabric itself may be used as long as the adhesive strength does not substantially decrease even without special release treatment. The anti-slip pressure-sensitive adhesive layer 9 is provided only on the body portion where the absorbent body 4 is interposed, and is not provided on the side flap portions SF.

Next, a method for individually packaging the sanitary napkin 1 described above will be described with reference to FIGS. 4 to 6. FIG. First, as shown in FIG. 4, the left and right side flap portions SF are placed on the skin contact surface side (the top sheet 3 side) along the longitudinal fold line L passing through the side edge of the absorbent body 4 or a position near the outer side thereof. ), and folded in the width direction so that the skin-contacting surfaces face each other. Next, the sanitary napkin 1 is individually packaged while being folded into a plurality of pieces in the longitudinal direction using the individual packaging sheet 10 . As shown in FIG. 5, the individual packaging sheet 10 folds the rear portion of the sanitary napkin 1 into the individual packaging sheet along the width direction folding line W1 passing through the rear side position of the portion H facing the blood discharge port. After folding in the longitudinal direction along with 10 toward the skin contact surface side (top sheet 3 side), as shown in FIG. The front part of the sanitary napkin 1 is folded in the longitudinal direction along with the individual packaging sheet 10 toward the upper side of the folded back part, and the opened side edge part of the individual packaging sheet 10 is embossed, pressed, heat-sealed, or adhesively bonded. The front and rear edges of the individual packaging sheet 10 are joined with an adhesive, and then preferably sealed with a tab tape 11 while blocking by an appropriate blocking means alone or in combination.

In order to maintain the state in which the side flap portions SF are folded in the width direction along the longitudinal folding lines L, the side flap portions SF are temporarily fixed in the folded state along the longitudinal folding lines L and individually packaged. It is preferable to As a result, in the step of folding the sanitary napkin 1 along with the individual packaging sheet 10 in the longitudinal direction after folding the side flap portions SF in the width direction, the state in which the side flap portions SF are folded in the width direction is not released, and the manufacturing process is completed. becomes easier. As the temporary fixing means, it is possible to use a wide range of known forms, for example, adhesion with an adhesive having adhesive strength to the extent that it can be easily peeled off by hand, pressure bonding with a roller or the like, and high rigidity as the side sheet 7 Adding a strong crease by using the material can be mentioned.

In the present sanitary napkin 1, as shown in FIG. 1, the side flap portions SF are provided with compressed portions 12 starting from intersections of the longitudinal folding lines L and the widthwise folding lines W1 and W2 or positions in the vicinity thereof. is provided. That is, each of the left and right side flap portions SF is provided with a compressing portion 12 immediately behind the width direction folding line W1 provided on the rear side of the blood discharge port facing portion H, and the blood discharge port facing portion H is provided with a pressing portion 12. A pressing portion 12 is provided immediately in front of the width direction folding line W2 provided on the front side.

The effect of the sanitary napkin 1 configured in this manner will be described. Although the sanitary napkin 1 is not provided with wing-shaped flaps protruding sideways from the side edges of the side flap portions, the wing-shaped flaps are not provided. After folding the side flap part SF in the width direction toward the skin contact surface side along the longitudinal folding line L, and then folding it in the longitudinal direction along the width direction folding lines W1 and W2, the individual is dressed. At this time, the side flap portion SF is provided with a pressing portion 12 whose starting point is the intersection of the longitudinal folding line L and the widthwise folding lines W1 and W2 or a position in the vicinity thereof. As a result, in a state where it is taken out from the individual packaging and worn on underwear, as shown in FIGS. 7 and 8, a section ( The side flap portions SF in the front-rear direction section corresponding to both side portions of the blood discharge port facing portion H), with the compressed portion 12 as a base end, stand up on the skin side due to the crease of individual packaging. The raised side flap portions SF act like three-dimensional gathers, and the raised side ends fit the body on both sides of the blood discharge port facing portion H. Even with a sanitary napkin that does not have gathers, the gaps between both sides of the sanitary napkin 1 and the body are reduced, and liquid leakage is less likely to occur. Moreover, since the side flap portions SF are configured to stand on the skin side without being provided with an elastic stretchable member, both sides of the blood discharge port facing portion H and the inner portion of the base of the leg are worn. It fits flexibly, and it is comfortable to wear without feeling discomfort such as a feeling of tightness.

In addition, since the side flaps SF are erected on both sides of the blood discharge port facing portion H and easily follow the movement of the body like three-dimensional gathers, leakage can be prevented more effectively. Furthermore, the user can feel that the upright side flap part SF is constantly touching both sides of the blood discharge port facing part H or the base of the leg, so that the user's anxiety about leakage is reduced and the user can use it with a sense of security. be able to

Further, in the present sanitary napkin 1, after the side flap portions SF are folded in the width direction along the longitudinal fold lines L, the sanitary napkin 1 is folded in the longitudinal direction along the width direction fold lines W1 and W2 for individual packaging. Therefore, when removed from the individual package, as shown in FIG. 7, the side flap portion SF has a mountain-fold crease 14 crossing the width direction in the front and rear of the side flap portion SF, and the side flap portion SF extends in the width direction. A valley-fold crease 15 is formed along the longitudinal direction at the base end folded in the direction, and these creases 14, 15 form the side flap portions SF between the front and rear compressed portions 12, 12. Furthermore, it becomes easier to stand up on the skin side.

More specifically, the pressing portion 12 presses the side flap portion SF, in which the side sheet 7 and the back sheet 2 are directly laminated, from the outer surface side of the side sheet 7. A concave portion recessed toward the non-skin side may be formed on the skin-contacting surface side, or a concave portion recessed toward the skin side may be formed on the non-skin-contacting surface side by squeezing the backsheet 2 from the outer surface side. may be formed. In the case of forming by pressing from the outer surface side of the side sheet 7, from the viewpoint of simplification of the processing process, it is preferable to apply simultaneously with pressing by an embossing roll when processing the embossed grooves 8 provided in the main body portion. .

The compressed portion 12 is formed starting from the intersection of the longitudinal folding line L and the widthwise folding lines W1, W2 or the vicinity thereof. That is, the inner edge in the width direction of the pressing portion 12 is positioned at or near the intersection. This makes it easier for the side flap portions SF between the front and rear compressed portions 12, 12 to stand up on the skin side, with the compressed portions 12 extending from this intersection as base ends. The compressed portion 12 is arranged so as not to cross the longitudinal folding lines L and the widthwise folding lines W1 and W2, and not to cross the folding lines L, W1 and W2 except for the inner edges in the width direction. .

As shown in FIG. 1, the compressed portion 12 is formed in a shape that gradually inclines in the longitudinal direction opposite to the blood discharge port facing portion H toward the outside in the width direction in a plan view of the sanitary napkin 1. is preferred. That is, the widthwise outer edge of the compressed portion 12 is arranged at a position farther from the blood discharge port facing portion H in the longitudinal direction than the widthwise inner edge. By providing the pressing portion 12 in such a shape, the side flap portion SF can easily stand up on the skin side with the pressing portion 12 as the base end when the sanitary napkin 1 is taken out from the individual package.

The minimum separation distance in the longitudinal direction of the napkin between the compressed portion 12 and the adjacent width direction folding line W1 or W2 is preferably 0 to 10 mm, preferably 0 to 5 mm, more preferably 0 to 2 mm. Moreover, the minimum separation distance between the compressed portion 12 and the longitudinal folding line L in the width direction of the napkin is preferably 0 to 10 mm, preferably 0 to 5 mm, and more preferably 0 to 2 mm. By providing the starting point of the pressing portion 12 at a position close to the width direction folding lines W1, W2 and the longitudinal folding line L, the side flap portion SF between the front and rear pressing portions 12, 12 is formed with the pressing portion 12 as the base end. Easier to stand on your side.

The compression part 12 can be formed in a straight line of equal width, as shown in FIG. In addition, as shown in FIG. 9A, by forming a generally triangular shape that gradually widens toward the outside in the width direction, the area of the pressing portion 12 is relatively increased, and the front and rear pressing portions 12, You may make it easy for the side flap part SF between 12 to stand up on the skin side by using the pressing part 12 as a base end. Also, the pressing portion 12 may be formed in a curved line as shown in FIG. 9(B). The direction in which the curved line bulges out may be the inner side in the width direction as in the illustrated example, or may be the outer side in the width direction.

In order to ensure that the side flap portion SF with the pressing portion 12 as the base end is raised toward the skin side, as shown in FIG. Width direction fold line compression portions 16 are provided along width direction outer sections of the longitudinal fold line L in the width direction fold lines W1 and W2 adjacent to the above, and the front side and the rear side of the blood discharge port facing portion H It is desirable that the longitudinal fold line pressing portion 17 is provided along the longitudinal fold line L between the width direction fold lines W1 and W2 adjacent to the . That is, along the width direction fold lines W1 and W2 and the longitudinal fold line L arranged between the compression portions 12 and 12 arranged in front and behind the left and right side flap portions SF, respectively, the width direction fold line compression portion 16 and longitudinal folding line compression part 17 are provided in a substantially U-shape in plan view. By providing the pressed portions 16 and 17 along the folding lines in this way, when the sheet is folded along the respective folding lines, the creases at the creases hardened and increased in rigidity are clearly formed. , When taken out from the individual package, the side flap portion SF can easily stand up on the skin side. The pressing direction when forming the width direction fold line compressed portion 16 and the longitudinal fold line compressed portion 17 is arbitrary, but the width direction fold line compressed portion 16 should not be a mountain fold protruding to the skin side. In consideration of this, it is preferable that the outer surface of the backsheet 2 is pressed from the outer surface side to form grooves that are recessed toward the skin side, and the longitudinal fold line pressing portions 17 are preferably formed on the outer surface of the backsheet 2 on the non-skin side. Considering that the valley folds protrude outward, it is preferable that the outer surface of the side sheet 7 is pressed from the outer surface side to form a concave groove that is recessed toward the non-skin side. The pattern may be a continuous line that is continuously compressed along the direction in which the fold line extends, or an intermittent line in which a plurality of compressed portions and non-compressed portions are alternately arranged along the direction in which the fold line extends. good too.

On the other hand, as shown in FIG. 1, the pressed portions along the width direction folding lines W1 and W2 and the longitudinal direction folding line L may not be provided. In this case, the side flap portions SF stand up on the skin side due to the crease in individual packaging.

As another modification, as shown in FIG. 11, the side flap portion SF may be provided with a bulging portion 18 that bulges outward in the width direction. As a result, when the side flap portion SF stands up on the skin side at the time of wearing, the rising height toward the skin side is increased by the bulging portion 18, and the tip of the bulging portion 18 is in close contact with the skin surface, making it more comfortable. Leakage can be effectively prevented. Since the side flap portion SF stands up on the skin side with the front and rear compressed portions 12, 12 as base ends, the bulging portion 18 is preferably formed between the front and rear compressed portions 12, 12. In the illustrated example, the bulging portion 18 is formed in a substantially linear shape in the longitudinal direction with stepped portions at both ends in the longitudinal direction, but it may be formed in a curved shape or the like that bulges outward in the width direction. .

[Other form examples]
In the above embodiment, the blood discharge port facing portion H is located in the longitudinal central portion of the sanitary napkin 1, and the width direction fold lines W1 and W2 along which the sanitary napkin 1 is folded into a plurality of pieces in the longitudinal direction when individual packaging is performed. Although the case where the blood discharge port facing portion H is provided with one each on the front side and the back side of the sanitary napkin 1 has been described as an example, the blood discharge port facing portion H is positioned closer to the front side of the sanitary napkin 1, and the blood discharge port facing portion H is positioned closer to the front side of the sanitary napkin 1. The sanitary napkin 1 may be folded into four or more, in which a plurality of width-direction folding lines are provided on the rear side of the blood port-facing portion H. In the case of the sanitary napkin 1 folded in four or more, the compressing portions 12 are provided only in the vicinity of the width direction folding lines W1 and W2 provided on the immediate front side and rear side of the blood discharge port facing portion H, respectively. It is not provided in the vicinity of the outer width direction folding line.

DESCRIPTION OF SYMBOLS 1... Sanitary napkin, 2... Back sheet, 3... Top sheet, 4... Absorbent body, 5... Wrapping sheet, 7... Side sheet, 8... Embossed groove, 10... Individual packaging sheet, 11... Tab tape, 12... Compressed parts 14 and 15: Creases 16: Width direction fold line compressed part 17 Longitudinal fold line compressed part 18: Bulging part H: Blood outlet facing part EF: End flap part SF: Side Flap part, L...Longitudinal fold line, W1/W2...Width direction fold line

Claims (7)

An absorbent article in which an absorber is interposed between a liquid-permeable topsheet and a liquid-impermeable backsheet, and side flap portions are formed on both sides of the absorber without an absorber interposed therebetween,
The side flap portion is not provided with a wing-shaped flap that is folded back so as to involve the outside of the crotch portion of the underwear when worn,
In the absorbent article, the side flap portion is folded toward the skin contact surface along a longitudinal fold line passing through the side edge or the outer side of the absorbent body, and at least the front side position of the blood discharge port facing portion Individually packaged by being folded in the longitudinal direction along the width direction folding lines passing through the rear positions,
The absorbent article according to claim 1, wherein the side flap portion is provided with a compressed portion starting from an intersection point of the longitudinal fold line and the width direction fold line or a position in the vicinity thereof. 2. The absorbent article according to claim 1, wherein the compressed portion is formed in a shape that gradually inclines toward the opposite side in the longitudinal direction of the blood discharge port facing portion toward the outer side in the width direction. Width direction fold line pressing portions are provided along a section of the width direction fold line adjacent to the front side and the rear side of the blood discharge port facing portion, and are located outside the longitudinal direction fold line in the width direction. 3. The absorbent article according to claim 1 or 2, wherein a longitudinal fold line compressed portion is provided along the longitudinal fold line between the width fold lines adjacent to the front side and the rear side of the portion. The absorbent article according to any one of claims 1 and 2, wherein no compressed portion is provided along the width direction fold line and the longitudinal direction fold line. 4. The absorbent article according to any one of claims 1 to 3, wherein the compressed portion is formed in a straight line or curved line of equal width, or in a shape gradually widening outward in the width direction. The side flap portion is provided with a bulging portion that bulges outward in the width direction, and when the side flap portion stands on the skin side when worn, the tip of the bulging portion comes into close contact with the skin surface. The absorbent article according to any one of claims 1 to 5. 7. The absorbent article according to any one of claims 1 to 6, wherein the side flap portions are temporarily fixed while being folded along the longitudinal folding lines, and individually packaged.

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