JP2012010884A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a dry touch feeling by guiding menstrual blood remaining in the vicinity of an opening part on a surface to a side of an absorber.SOLUTION: The absorber 4 is interposed between a porous plastic surface sheet 3 with a plurality of openings 8 formed thereon and a rear surface sheet 2. A hydrophilic fiber layer 6 is interposed on a lower surface side of the plastic surface sheet 3. A pair of right and left embosses 11 for blood discharging opening, 11 arranged along the longitudinal direction are formed at least on both sides of a blood discharging opening part H. The plastic surface sheet 3 is configured to have rising edge parts 10 rising on the surface side and the rear surface side respectively along the periphery of the opening 8. In a region between the embosses 11, 11, the openings 8 are formed to have a length dimension in the longitudinal direction of the absorbent article 1. Under a condition where the plastic surface sheet 3 is extended in the width direction by adding the embosses 11, 11, a part of the fiber of the hydrophilic fiber layer 6 extends from the openings 8 with the width expanded in the width direction.

Description

  The present invention is an absorbent article mainly used for sanitary napkins, vaginal discharge sheets, incontinence pads, toiletries, etc., and more specifically, a dry touch feeling is obtained by inducing menstrual blood remaining on the surface to the absorber side. In addition, the present invention relates to an absorbent article that prevents the fibers from clinging to the skin except at predetermined sites.

  Conventionally, as an absorbent article such as a panty liner, sanitary napkin, incontinence pad, a liquid-impervious back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric, and a liquid-permeable surface sheet such as a nonwoven fabric or a liquid-permeable plastic sheet There is known an intervening absorber made of cotton-like pulp or the like.

  In the absorbent article, in order to satisfy the dry touch feeling on the skin and to increase the absorption rate of body fluid, the liquid-permeable surface sheet is also referred to as a heat-sealable hydrophobic porous plastic sheet (hereinafter also referred to as a mesh sheet). ), A hydrophilic fiber sheet called a second sheet is interposed between the liquid-permeable surface sheet and the absorbent body, and the mesh sheet and the second sheet are joined discontinuously by a predetermined emboss pattern. Has been proposed. As an absorbent article employing such a configuration, for example, the following Patent Document 1 can be cited.

  On the other hand, the sanitary napkin using the mesh sheet as a surface material has been unsatisfactory because it has no irregularities, is in close contact with the skin, has a vinyl feel, and is soft to the touch. In order to eliminate such dissatisfaction, the mesh sheet is formed with an upstanding edge that stands on the surface side along the perimeter of the aperture, giving the surface of the mesh sheet an uneven feeling and making it feel like a nonwoven fabric It has been known. As such a mesh sheet, for example, in Patent Document 2 below, the first plastic film layer forming the upper surface of the sheet rises upward from the upper surface of the flat portion at the edge of the first flat portion extending in one direction in parallel with each other. There is disclosed a liquid-permeable surface sheet of a body fluid-absorbing article in which a first standing portion that has a generally serrated shape and repeats rising is formed. In addition, in Patent Document 3 below, the micro-opening portion has compression resistance and shear resistance of each surface deformation portion and contact with the skin of the observer so that the feel of the web is almost flexible and silky. A micro-opened polymeric web is disclosed that is a crater-like aperture having a relatively thin irregular shaped petal-like portion that reduces the degree.

Japanese Patent No. 39998477 JP 2000-342624 A Japanese Patent No. 2543502

  However, in the surface sheet described in Patent Documents 2 and 3, since a sawtooth-shaped first standing part or petal-like part standing on the surface side is formed along the periphery of the opening of the mesh sheet, it is shown in FIG. As described above, menstrual blood collected around the standing portion is not easily absorbed by the absorber through the opening, and menstrual blood remains on the surface sheet, causing stickiness and dirt on the skin.

  On the other hand, if a part of the fiber sheet fiber protrudes from the plastic sheet at a site other than the blood drainage port and its vicinity, the significance of using the plastic sheet as the surface material decreases, and the fiber clings to the skin. May cause discomfort.

  Therefore, the main problem of the present invention is to maintain the dry touch feeling by guiding menstrual blood remaining around the surface opening portion to the absorber side, and the fibers cling to the skin except for a predetermined part. It is providing the absorbent article which prevented this.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent body is interposed between a porous plastic surface sheet having a large number of apertures and a liquid-impermeable back sheet, and the porous plastic In an absorbent article in which a hydrophilic fiber layer is interposed on the lower surface side of the topsheet, and a pair of left and right blood drainage mouth embosses are formed along the substantially longitudinal direction on both sides of the blood drainage mouth corresponding part.
The porous plastic surface sheet is formed with an opening having standing edges standing on the front surface side and the back surface side along the periphery of the opening,
In the region sandwiched between the blood discharge port corresponding embosses, the opening is formed in a shape having a longitudinal dimension in the longitudinal direction of the absorbent article, and the porous plastic surface sheet is formed by adding the blood discharge port corresponding embossing. A part of the fibers of the hydrophilic fiber layer is extended from the opening widened in the width direction under the condition of extending in the width direction.

  In the first aspect of the present invention, as the porous plastic surface sheet in which a large number of openings are formed, the openings having standing edges that stand on the front surface side and the back surface side, respectively, along the periphery of the openings. The formed structure. And in the area | region pinched | interposed by the blood discharge port corresponding part embossing, the said hole is formed in the shape which has a longitudinal dimension in the longitudinal direction of an absorbent article, and the said porous plastic surface sheet is added by the addition of the said blood discharge port corresponding embossing A part of the fiber of the hydrophilic fiber layer is extended from the opening widened in the width direction under the condition where the fiber is extended in the width direction. For this reason, menstrual blood collected around the opening having the standing edge standing on the front side is caused by the capillary action of the fibers of the hydrophilic fiber layer extending from the opening having the standing edge standing on the back side. It is drawn into the aperture and is absorbed by the absorber. Therefore, menstrual blood does not remain on the top sheet, and a dry touch feeling can be maintained.

  On the other hand, in a region other than the region sandwiched between the blood drainage outlet embosses, the surface sheet is not easily stretched due to the addition of the blood drainage port embosses, so that some of the fibers of the hydrophilic fiber layer can extend from the openings. Therefore, the fibers can be prevented from clinging to the skin.

As the present invention according to claim 2, a pair of left and right buttocks corresponding to the buttock groove along the substantially longitudinal direction is formed at the rear portion of the blood discharge port corresponding emboss at a narrower interval than between the blood discharge port corresponding embosses,
In the region sandwiched between the ridges corresponding to the groove groove, the opening is formed in a shape having a longitudinal dimension in the longitudinal direction of the absorbent article, and the porous plastic surface sheet is formed in the width direction by adding the boss groove corresponding emboss. 2. The absorbent article according to claim 1, wherein a part of the fibers of the hydrophilic fiber layer is extended from the opening widened in the width direction under the condition of extending in the width direction.

  In the invention according to claim 2, a pair of left and right buttocks corresponding to the buttock groove along the substantially longitudinal direction is formed at the rear portion of the blood discharge port corresponding emboss at a narrower interval than between the blood discharge port corresponding embosses. In the region sandwiched between the buttock groove corresponding embossing, the opening is formed in a shape having a longitudinal dimension in the longitudinal direction of the absorbent article, similarly to the opening between the blood discharge port corresponding embosses, A part of the fiber of the hydrophilic fiber layer is extended from the opening widened in the width direction under the condition that the porous plastic surface sheet is extended in the width direction by adding an emboss corresponding to the buttock groove. It is. As a result, menstrual blood remaining on the rear side of the top sheet 3 can be captured from the blood drainage port through the buttocks groove. Further, since the ridge groove-corresponding emboss is formed at a narrower interval than between the blood drainage-corresponding embosses, a strong tension is generated in the porous plastic surface sheet, and a longer fiber extends from the opening. For this reason, the fiber extended from the opening enters into the depth of the buttock groove, and the menstrual blood transmitted through the skin can be directly captured by the fiber.

  As the present invention according to claim 3, at least the opening in the region in which a part of the fiber of the hydrophilic fiber layer extends from the opening is formed in an elliptical shape having a longitudinal dimension in the longitudinal direction of the absorbent article. An absorbent article according to any one of claims 1 and 2 is provided.

  In the invention of claim 3, by forming an opening in a region in which a part of the fiber of the hydrophilic fiber layer extends from the opening, an elliptical shape having a longitudinal dimension in the longitudinal direction of the absorbent article. When the porous plastic surface sheet is extended in the width direction by the addition of embossing, the opening shape widened in the width direction becomes almost circular, and the fibers are easily extended.

  As the present invention according to claim 4, in the region other than the region where a part of the fibers of the hydrophilic fiber layer is extended from the aperture, the aperture is formed in a shape having substantially the same longitudinal dimension and width dimension. An absorbent article according to any one of claims 1 to 3 is provided.

  In the invention according to the fourth aspect, since an opening is formed in a region other than the region sandwiched between the embosses in a shape having substantially the same longitudinal and width dimensions such as a circle, the skin of this region The area becomes soft.

  As this invention which concerns on Claim 5, the said absorber forms the middle high part of a high absorber on the use surface side in the range corresponding to the area | region which extends a part of fiber of the hydrophilic fiber layer from the said opening. An absorbent article according to any one of claims 1 to 4 is provided.

  In the invention according to claim 5, as the absorber, a middle and high portion of the absorber that is high on the use surface side is formed in a range corresponding to a region in which a part of the fiber of the hydrophilic fiber layer is extended from the opening. By using what was made, when extending a part of the fiber of the hydrophilic fiber layer from the opening widened in the width direction under the condition that the porous plastic surface sheet was extended in the width direction by the addition of embossing, Since a large tension is applied to the porous plastic surface sheet and the openings are easily opened, a part of the fibers are easily extended from the openings.

  As the present invention according to claim 6, the hydrophilic fiber layer is subjected to raising treatment in a range corresponding to a region extending a part of the fibers of the hydrophilic fiber layer from the opening. 5. An absorbent article according to any one of 5 is provided.

  In the invention according to claim 6, the hydrophilic fiber layer is subjected to raising treatment in a range corresponding to a region where a part of the fibers of the hydrophilic fiber layer is extended from the opening, thereby opening the embossed portion. A part of the fiber easily extends from the hole.

  As described above in detail, according to the present invention, the menstrual blood remaining in the vicinity of the opening portion of the surface is guided to the absorber side so that the dry touch feeling can be continuously maintained, and the fibers can be applied to the skin except for a predetermined portion. An absorbent article that prevents clinging can be provided.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. It is the II-II arrow directional view. It is a principal part expanded sectional view of the surface side. 3 is a plan view of a porous plastic surface sheet 3. FIG. It is an expanded view of the sanitary napkin 1 'which concerns on another form. It is a principal part expanded sectional view of the surface side concerning a prior art example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The sanitary napkin 1 is mainly used for applications such as panty liners, sanitary napkins, cage sheets, incontinence pads, and the like. For example, as shown in FIG. In the illustrated example, the absorbent body 4 surrounded by the crepe paper 5 is interposed between the hydrophobic porous plastic surface sheet 3 formed with a large number of apertures 8, 8... And a hydrophilic fiber sheet 6 is disposed between the porous plastic surface sheet 3 and the absorbent body 4. In addition, side nonwoven fabrics 7 and 7 formed along the longitudinal direction are provided on both side portions on the surface side, and a part of the side nonwoven fabrics 7 and 7 extend sideways and also extend sideways. Wing-like flaps W and W are formed by part of the existing liquid-impermeable back sheet 2. Around the absorber 4, the liquid-impermeable back sheet 2 and the porous plastic surface sheet 3 are bonded together by an adhesive means such as a hot melt adhesive.

  The liquid-impervious back sheet 2 is made of a sheet material having at least water-impervious properties such as polyethylene and polypropylene, but in addition to this, a non-woven sheet after securing a substantially liquid-impervious property through a waterproof film. (In this case, a liquid-impervious back sheet is composed of the waterproof film and the nonwoven fabric). In recent years, those having moisture permeability tend to be suitably used from the viewpoint of preventing stuffiness. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used.

  As the porous plastic surface sheet 3, for example, a material sheet of an olefin resin such as polyethylene or polypropylene is preferably used, but a polyamide resin such as polyester or nylon, EVA, an acrylic resin, or the like can also be used. .

  When the surface of the porous plastic surface sheet 3 defines a blood drainage outlet corresponding portion, and bulges tightly on the surface side, encloses absorbed body fluid, and forms an intermediate high portion of the absorber described later, In order to hold the middle and high portions in a predetermined position, a pair of left and right blood drainage mouth corresponding embosses 11 and 11 are formed at least on both sides of the blood drainage mouth corresponding portion H along the substantially longitudinal direction. In the example shown in FIG. 1, decorative embosses are formed in appropriate shapes for decoration and the like before and after that.

  The absorbent body 4 interposed between the liquid-impermeable back sheet 2 and the porous plastic surface sheet 3 is composed of, for example, fluffy pulp and a water-absorbing polymer. The water-absorbing polymer is mixed in the pulp constituting the absorber, for example, as granular powder. Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as dissolved pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price.

  Further, synthetic fibers may be mixed in the absorbent body 4. As the synthetic fiber, 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. It may be a mixture. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used. In the case of a hydrophobic fiber, it is desirable to use a synthetic fiber that has been surface-treated with a hydrophilizing agent so as to have an affinity for body fluids.

  The hydrophilic fiber sheet 6 disposed between the porous plastic surface sheet 3 and the absorbent body 4 only needs to be hydrophilic to body fluids. Specifically, by using recycled fibers such as rayon and cupra, natural fibers such as cotton, the material itself has hydrophilicity, or synthesis of olefins such as polyethylene or polypropylene, polyesters, polyamides, etc. The fiber which surface-treated with the hydrophilizing agent and provided the hydrophilic property can be used. The hydrophilic fiber sheet 6 is not limited as long as it has a fiber layer, but preferably a non-woven fabric can be used as it is. There are various nonwoven fabrics such as spunlace nonwoven fabric, spunbond nonwoven fabric, melt blown nonwoven fabric, needle punched nonwoven fabric, and air-through nonwoven fabric depending on the production method. Among these nonwoven fabrics, it is desirable to use an air-through nonwoven fabric.

As described in detail later, the hydrophilic fiber sheet 6 contains short fibers in order to extend a part of the fibers of the hydrophilic fiber sheet 6 from the openings 8, 8... Of the porous plastic surface sheet 3. It is necessary. Specifically, it is desirable that short fibers having a length of 2 mm or less, preferably 1 mm or less are contained in an amount of 30 to 100%, preferably 60 to 80%, based on the total weight (total weight of the hydrophilic fiber sheet 6). . The hydrophilic fiber layer 6 has a thickness of 0.1 to 1.0 mm, preferably 0.2 to 0.4 mm, and a basis weight of 10 to 50 g / m ² , preferably 25 to 40 g / m ² .

  As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of an important function. For example, if importance is placed on functions such as preventing permeation of menstrual blood or vaginal discharge, or enhancing the touch feeling, water repellent treatment coated with silicon, paraffin or alkylchromic chloride water repellent It is desirable to use a nonwoven fabric. Further, if importance is attached to the absorption of menstrual blood and the like in the wing-shaped flaps W, W, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the process of producing a synthetic fiber, , By treating with a metal salt such as stannic chloride, partially dissolving the surface to make it porous, and depositing metal hydroxides to swell or make the synthetic fiber porous, applying capillary action to make it hydrophilic It is desirable to use a hydrophilic treated non-woven fabric provided with.

  The porous plastic surface sheet 3 used in the sanitary napkin 1 according to the present invention has an opening 8 having rising edges 10 that stand on the front side and the back side, respectively, along the periphery of the opening 8. 8 ... are formed in plural. That is, as shown in FIG. 3, a plurality of apertures 8A each having a standing edge portion 10A standing on the front surface side and a plurality of apertures 8B having a standing edge portion 10B standing on the back surface side are formed.

As for the size of the opening 8, it is also possible to form an opening 8A having an upstanding edge 10A standing on the front surface side and an opening 8B having an upstanding edge 10B standing on the back side with the same size. However, the openings 8A and 8B may be formed in different sizes. In the example shown in FIG. 3, the opening 8A is formed with a size smaller than the opening 8B. Specifically, the longitudinal dimension of the aperture 8A is 0.05 to 1.0 mm, preferably 0.1 to 0.5 mm, and the number of apertures is 100 to 600 holes / cm ² , preferably 300 to 500. It is desirable that the number is about ² / cm ² . The longitudinal dimension of the aperture 8B is 0.5 to 3.0 mm, preferably 0.6 to 2.0 mm, and the number of apertures is 10 to 30 / cm ² , preferably 15 to 20 / cm ^2, a is desirably.

  In order to perform such opening processing, the top sheet 3 is passed between an embossing roll and an anvil roll in which a large number of pin embossing for embossing (opening 8A) from the back side of the sheet is formed. After the surface sheet 3 is passed, the surface sheet 3 is passed between an embossing roll and an anvil roll on which a large number of pin embossing for embossing (opening 8B) from the surface side of the sheet is formed, or a large number of Openings 8A and 8B having standing edges 10A and 10B that stand on the front surface side and the back surface side as described above by passing the top sheet 3 between a pair of embossing rolls each formed with pin embossing. Can be formed.

  In the sanitary napkin 1, as shown in detail in FIG. 3, a porous plastic having a longitudinal dimension in the longitudinal direction of the sanitary napkin 1 is formed in the region sandwiched between the blood discharge mouth corresponding embosses 11, 11. The openings 8, 8... Of the surface sheet 3 are formed, and the porous plastic surface sheet 3 is expanded in the width direction by the addition of the blood discharge port corresponding emboss 11, and the width of the region is expanded in the width direction. Some of the fibers of the hydrophilic fiber layer 6 are extended from the openings 8, 8. For this reason, menstrual blood collected around the opening 8A having the standing edge portion 10A standing on the front surface side is hydrophilic fiber extending to the surface side from the opening 8B having the standing edge portion 10B standing on the back surface side. Due to the capillary action of the fibers of the layer 6, it is drawn into the aperture 8 </ b> B and is absorbed by the absorber 4. Therefore, menstrual blood does not remain on the porous plastic surface sheet 3, and a dry touch feeling can be maintained at all times. Further, by extending the fiber from the opening 8A having the standing edge portion 10A that stands on the surface side, it is possible to reduce the tip of the standing edge portion 10A from coming into direct contact with the skin. Can be obtained.

  On the other hand, in the region other than the region sandwiched between the blood discharge port corresponding embosses 11, 11, the porous plastic surface sheet 3 is not easily stretched due to the addition of the blood discharge port corresponding embosses 11, 11. There is almost no extension. Therefore, it is possible to prevent the fibers from clinging to the skin in this region.

  The shape of the opening 8 is at least an oval, a rectangle, or a region sandwiched between the blood outlet corresponding embosses 11 and 11 (a region in which a part of the fibers of the hydrophilic fiber layer 6 extends from the opening). The sanitary napkin 1 such as a rhombus is formed in a shape having a longitudinal dimension in the longitudinal direction. Of these, it is desirable to form an ellipse. By forming an ellipse, as shown in FIG. 4, when the tension due to embossing is applied from both sides, the elliptical apertures 8, 8... Are deformed into a circle as indicated by the two-dot chain line. A part of the fibers of the hydrophilic fiber layer 6 can easily extend from the openings 8, 8. If the opening 8 is formed in a circular shape, when it is subjected to tension due to embossing, it becomes a horizontally long ellipse, so that it is difficult for some of the fibers to extend from the opening 8.

  The aperture shape may be the same aperture shape over the entire surface of the sheet, or a region sandwiched between the blood discharge port corresponding embosses 11 and 11 (part of the fibers of the hydrophilic fiber layer 6 from the aperture). The region to be extended) may be different from other regions (regions other than the region in which part of the fibers of the hydrophilic fiber layer 6 are extended from the opening). When the shape of the hole is different for each region, in order to improve the skin contact in the region other than the region where a part of the fiber of the hydrophilic fiber layer 6 is extended from the hole, the longitudinal dimension and width such as a circle, a square, etc. It is preferable to form it in a shape that is approximately the same in size.

  As shown in FIG. 2, the absorber 4 has a high absorber on the use surface side in a range corresponding to a region in which a part of the fibers of the hydrophilic fiber layer 6 extends from the openings 9, 9. It is preferable to form the middle high section 4A. When providing the middle-high portion 4A, the blood discharge port corresponding emboss 11 is formed along the periphery of the middle-high portion 4A in order to hold the middle-high portion 4A in a predetermined position. Since a high step is formed on the surface side by this middle and high portion 4A, under the condition that the porous plastic surface sheet 3 is extended in the width direction by the addition of the embosses 11 and 11, hydrophilicity is obtained from the openings 8, 8. A part of the fibers of the conductive fiber layer 6 becomes easier to extend.

  On the other hand, it is preferable that the surface side of the hydrophilic fiber layer 6 is subjected to raising treatment in a range corresponding to a region where a part of the fibers of the hydrophilic fiber layer 6 is extended from the openings 8, 8. The raising treatment can be performed by passing the hydrophilic fiber layer 6 through a raising machine and applying a raising needle to the surface and scratching it. Thereby, since the fiber of the surface side of the hydrophilic fiber layer 6 comes to stand, it becomes easy to extend a part of fiber of the hydrophilic fiber layer 6 from the opening 8,8 ....

  The above-described configuration can be applied to a sanitary napkin 1 'according to another embodiment as shown in FIG. Specifically, in the sanitary napkin 1 ′, a pair of left and right buttock grooves along the substantially longitudinal direction at the rear of the blood discharge port corresponding embosses 11, 11 at a narrower interval than between the blood discharge port corresponding embosses 11, 11. Corresponding embosses 12 and 12 are formed. In the illustrated example, the butt groove corresponding embosses 12 and 12 are formed continuously from the rear end portions of the blood discharge port corresponding embosses 11 and 11, and the front ends of the blood discharge port corresponding embosses 11 and 11 and the butt groove corresponding emboss 12. , 12 are connected to each other by arc-shaped embosses, so that a closed curve is formed as a whole.

  More specifically, the regions surrounded by the blood discharge port corresponding embosses 11 and 11 and the groin groove corresponding embosses 12 and 12 are each opened in an elliptical shape having a longitudinal dimension in the longitudinal direction of the sanitary napkin 1. The holes 8, 8... Are formed and widened in the width direction under the condition that the porous plastic surface sheet 3 is expanded in the width direction by the addition of the blood discharge port corresponding embosses 11 and 11 and the buttock groove corresponding embosses 12 and 12. Some of the fibers of the hydrophilic fiber layer 6 are extended from the openings 8, 8.

  By extending a part of the fibers of the hydrophilic fiber layer 6 from the openings 8, 8... In the region sandwiched by the buttock groove corresponding embosses 12, 12, the surface is transferred from the blood drainage port portion to the buttock groove. Menstrual blood remaining on the rear side of the sheet 3 can be captured. In addition, since the gap between the boss groove-corresponding embosses 12 and 12 is formed at a narrower interval than between the blood discharge port-corresponding embosses 11, 11, it is strong against the porous plastic surface sheet 3 when adding the buttock groove embossing 12, 12. Tension is generated, and the fiber extending from the opening can be made longer than that of the blood outlet. For this reason, the fiber extended from the opening enters into the depth of the buttock groove, and the menstrual blood transmitted through the skin can be directly captured by the fiber.

  Note that, in the sanitary napkin 1 ′ according to another embodiment, similarly to the above, the middle and high portions of the absorbent body 4 are formed between the groin groove-corresponding embosses 12, 12, or the groin groove-corresponding embosses 12, 12. The hydrophilic fiber layer 6 can be subjected to raising treatment.

  1.1 '... sanitary napkin, 2 ... liquid impervious back sheet, 3 ... porous plastic surface sheet, 4 ... absorbent, 5 ... crepe paper, 6 ... hydrophilic fiber layer, 7 ... side nonwoven fabric, 8 ... open Hole: 10 ... Opening edge, 11 ... Embossing for blood discharge port, 12 ... Embossing for groin groove

Claims (6)

An absorbent body is interposed between the porous plastic surface sheet formed with a large number of apertures and the liquid-impermeable back sheet, and a hydrophilic fiber layer is interposed on the lower surface side of the porous plastic surface sheet, and at least In the absorbent article in which a pair of left and right blood drainage outlet embosses along the substantially longitudinal direction is formed on both sides of the blood drainage outlet corresponding part,
The porous plastic surface sheet is formed with an opening having standing edges standing on the front surface side and the back surface side along the periphery of the opening,
In the region sandwiched between the blood discharge port corresponding embosses, the opening is formed in a shape having a longitudinal dimension in the longitudinal direction of the absorbent article, and the porous plastic surface sheet is formed by adding the blood discharge port corresponding embossing. A part of the fibers of the hydrophilic fiber layer is extended from the opening widened in the width direction under the condition of extending in the width direction. A pair of left and right buttocks corresponding to the buttock groove along the substantially longitudinal direction is formed at the rear part of the blood discharge port corresponding emboss at a narrower interval than between the blood discharge port corresponding embosses,
In the region sandwiched between the ridges corresponding to the groove groove, the opening is formed in a shape having a longitudinal dimension in the longitudinal direction of the absorbent article, and the porous plastic surface sheet is formed in the width direction by adding the boss groove corresponding emboss. 2. The absorbent article according to claim 1, wherein a part of the fibers of the hydrophilic fiber layer is extended from the opening widened in the width direction under the condition of extending in the width direction.   The opening in the region where at least a part of the fibers of the hydrophilic fiber layer extends from the opening is formed in an elliptical shape having a longitudinal dimension in the longitudinal direction of the absorbent article. Absorbent article according to crab.   4. The opening is formed in a region other than a region in which a part of the fibers of the hydrophilic fiber layer is extended from the opening with a shape having substantially the same longitudinal dimension and width dimension. Absorbent article according to crab.   5. The medium according to any one of claims 1 to 4, wherein the absorbent body is formed with a high-absorber medium-high portion on the use surface side in a range corresponding to a region in which a part of the fibers of the hydrophilic fiber layer is extended from the opening. Absorbent article according to crab.   The absorbent article according to any one of claims 1 to 5, wherein the hydrophilic fiber layer is subjected to raising treatment in a range corresponding to a region in which part of the fiber of the hydrophilic fiber layer extends from the opening. .

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