阅读说明：本技术 吸收性物品 (Absorbent article ) 是由 德永幸子 于 2018-05-22 设计创作，主要内容包括：在主体具有细长形状且具有挤压槽的吸收性物品中,挤压槽具有：沿前后方向延伸的一对前后方向挤压槽；和端部区域挤压槽,其形成于前方端部区域和后方端部区域中的至少一个端部区域,且具有包含有朝向中央区域突出的大致V字形状的形状,前后方向挤压槽在远离所述体液排出口对应区域的方向上越过端部区域挤压槽的大致V字形状的末端的位置而延伸。(In an absorbent article having a main body with an elongated shape and a pressing groove, the pressing groove has: a pair of front-rear direction pressing grooves extending in the front-rear direction; and an end region pressing groove formed in at least one of the front end region and the rear end region and having a shape including a substantially V-shape protruding toward the central region, the front-rear direction pressing groove extending beyond a position of a substantially V-shaped end of the end region pressing groove in a direction away from the body fluid discharge port corresponding region.)

1. An absorbent article provided with a main body, the main body having: a liquid-permeable front sheet; a liquid-impermeable back sheet; and an absorber disposed between the front sheet and the back sheet, wherein,

the body has an elongated shape: has a predetermined length in the front-rear direction and a predetermined width in the width direction perpendicular to the front-rear direction,

the main body has: a central region including a body fluid discharge port-corresponding region corresponding to a body fluid discharge port of a wearer when worn; a forward end region forward of the central region; and a rear end region rearward of the central region,

the main body has a pressing groove recessed from the front sheet side to the back sheet side,

the extrusion groove has: a pair of front-rear direction pressing grooves extending in the front-rear direction; and an end region pressing groove formed in at least one of the front end region and the rear end region and having a shape including a substantially V-shape protruding toward the body fluid discharge port corresponding region,

the front-rear direction pressing groove extends in a direction away from the region corresponding to the bodily fluid discharge port beyond a position of the substantially V-shaped tip of the end region pressing groove.

2. The absorbent article of claim 1,

the at least one end portion of the front-rear direction pressing groove is bent toward the inner side in the width direction.

3. The absorbent article of claim 1,

the distance between the position of the end of the substantially V-shape of the end region pressing groove and the position of the end of the portion of the front-rear direction pressing groove extending beyond the position of the end in the front-rear direction is 2.0mm to 8.0mm in the front-rear direction.

4. The absorbent article of claim 1,

the forward-backward direction pressing groove has: a high extrusion part; and a low-compressed portion depressed shallower than the high-compressed portion,

the portion of the front-rear direction pressing groove extending beyond the position of the substantially V-shaped tip of the end region pressing groove does not have the high pressing portion.

5. The absorbent article of claim 1,

the angle of the V-shape of the approximate V-shape is 60-150 degrees.

6. The absorbent article of claim 1,

the front-rear direction pressing groove is separated from the end region pressing groove in the width direction.

7. The absorbent article of claim 1,

the end region pressing groove is formed in the front end region,

the pair of forward and rearward pressing grooves are connected to each other in the rear end region.

Technical Field

The present invention relates to an absorbent article.

Background

Conventionally, as absorbent articles such as sanitary napkins, pantiliners, and incontinence pads, the following absorbent articles are known: in order to control the transfer of the absorbed body fluid, or to deform the main body in accordance with the shape of the body, linear squeezing grooves are formed in the main body of the absorbent article.

For example, patent document 1 discloses an absorbent article having: a front pressing groove extending in the width direction in the front region; and a pair of longitudinal pressing grooves extending in the longitudinal direction at both side portions in the longitudinal direction of the excretion portion facing region, the front pressing groove and each of the longitudinal pressing grooves being connected to each other so as to form a narrowed portion that narrows toward the inner side in the width direction, the front pressing groove having a recessed portion recessed toward the rear side at a widthwise central portion.

Patent document 2 discloses an absorbent article in which: the front side portion embossing is formed along the approximate width direction of the absorbent article for the front side portion located on the front side by providing a separation width in the longitudinal direction with respect to the blood discharge port corresponding portion, and the rear side portion embossing is formed in an approximately inverted V shape gradually expanding from the position on the longitudinal direction center line toward the rear side to both sides.

Disclosure of Invention

Problems to be solved by the invention

Patent document 1 describes the following: since the absorbent article is easily bent from the recessed portion of the front pressing groove, longitudinal gathers are less likely to occur in the front. However, in the structure of patent document 1, the portion bent from the concave portion may protrude and come into contact with the skin, and this may impair the wearing feeling of the absorbent article.

Patent document 2 describes the following: with the disclosed structure, the absorbent article follows the shape of the body and the movement of the body, thereby improving the fit. However, in the absorbent article of patent document 2, there are cases where: the fit in the end regions along the body curve is not sufficient.

In view of the above problems, an object of the present invention is to provide an absorbent article that can fit the end regions well along the body curve and has excellent wearing comfort.

Means for solving the problems

A first aspect of the present invention is an absorbent article including a main body having: a liquid-permeable front sheet; a liquid-impermeable back sheet; and an absorber provided between the front sheet and the back sheet, wherein the main body has such an elongated shape that: the main body has a predetermined length in a front-rear direction and a predetermined width in a width direction perpendicular to the front-rear direction, and includes: a central region including a body fluid discharge port-corresponding region corresponding to a body fluid discharge port of a wearer when worn; a forward end region forward of the central region; and a rear end region rearward of the central region, the body having a pressing groove recessed from the front surface sheet side to the rear surface sheet side, the pressing groove having: a pair of front-rear direction pressing grooves extending in the front-rear direction; and an end region pressing groove formed in at least one of the front end region and the rear end region and having a shape including a substantially V-shape protruding toward the body fluid discharge port corresponding region, wherein the front-rear direction pressing groove extends beyond a position of a tip of the substantially V-shape of the end region pressing groove in a direction away from the body fluid discharge port corresponding region.

ADVANTAGEOUS EFFECTS OF INVENTION

According to one aspect of the present invention, an absorbent article can be provided that can fit the end regions well along the body curve and has excellent wearing comfort.

Drawings

Fig. 1 is a partial cutaway view of an absorbent article according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of an absorbent article according to one embodiment of the present invention, taken along line I-I.

Fig. 3 is an enlarged view of the front end region of fig. 1.

Fig. 4 is an enlarged view of the front end region of fig. 1.

Fig. 5 is a diagram showing a modification of the end region pressing groove in one embodiment of the present invention.

Fig. 6 is a view showing an absorbent article according to another embodiment of the present invention.

Detailed Description

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

Fig. 1 is a partial cut-away view of an absorbent article 1 according to one embodiment of the present invention. In addition, a cross section along the line I-I in fig. 1 is shown in fig. 2. As shown in fig. 1 and 2, the absorbent article 1 includes a main body (absorbent article main body) 8, and the main body 8 includes: a liquid-impermeable back sheet 2; a liquid-permeable front sheet 3; and an absorbent body 4 arranged between the two sheets 2, 3. The absorbent member 4 may be covered with a cover sheet 5 made of crepe paper, nonwoven fabric, or the like in order to maintain the shape of the absorbent member 4.

As shown in fig. 1, the main body 8 has an elongated shape as follows as a whole: has a predetermined length in the front-rear direction and a substantially constant width in a direction perpendicular to the front-rear direction. The absorbent article 1 is substantially line-symmetric about a center line CL extending in the front-rear direction. In addition, the absorbent article main body 8 includes: a central region M including a region 40 corresponding to a bodily fluid discharge port such as a vaginal opening of a wearer when worn (bodily fluid discharge port-corresponding region); a front end region F located in front of the central region M; and a rear end region R located rearward of the central region M (the front end region F and the rear end region R are also collectively referred to as end regions). The central region M may have wings W, W extending from both sides thereof for reliably securing the absorbent article 1 to underwear when worn. The front end region F may be a region forward of a position that becomes a front starting point of the wing W, and the rear end region R may be a region rearward of a position that becomes a rear starting point of the wing W.

The outer edge of the back sheet 2 and the outer edge of the front sheet 3 at the front and rear edges of the absorbent body 4 may be joined together by an adhesive such as a hot melt adhesive, or by an adhesive means such as heat sealing or ultrasonic sealing. Side nonwoven fabrics 7 are provided on both side portions of the front sheet 3 side, respectively, along the front-back direction (longitudinal direction). The side nonwoven fabric 7 partially protrudes to the side of the main body 8, is laminated on the back sheet 2 which also protrudes to the side, and can be joined together by an adhesive such as a hot melt adhesive, or an adhesive means such as heat sealing or ultrasonic sealing, whereby flaps W, W can be formed on both side portions of the main body 8.

As the back sheet 2, a sheet having at least water-blocking property such as an olefin resin sheet of polyethylene, polypropylene or the like can be used. A laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like may be used, or a laminated sheet of a nonwoven fabric having a water-proof film interposed therebetween and substantially ensuring liquid impermeability may be used. In addition, from the viewpoint of preventing stuffiness, it is more desirable to use a sheet having moisture permeability. As such a water-blocking/moisture-permeable sheet, a microporous sheet obtained by the following method can be used: the inorganic filler is melt-kneaded in an olefin resin such as polyethylene or polypropylene to form a sheet, and then the sheet is uniaxially or biaxially stretched.

The front sheet 3 is a liquid-permeable sheet that allows liquid such as menstrual blood, leucorrhea, and urine to rapidly permeate therethrough. As the front sheet 3, a porous or nonporous nonwoven fabric, a porous plastic sheet, or the like is suitably used. As the face fabric constituting the nonwoven fabric, for example, olefin such as polyethylene and polypropylene, synthetic fiber such as polyester and polyamide, regenerated fiber such as rayon and cuprammonium fiber, blended fiber thereof, and natural fiber such as cotton can be used alone or in combination of 2 or more of the above materials. Examples of the nonwoven fabric processing method include a spunlace method, a spunbond method, a hot-rolling method, a melt-blowing method, and a needle-punching method. Among these processing methods, the spunlace method is preferable in that a nonwoven fabric rich in flexibility can be produced, the spunbond method is preferable in that a nonwoven fabric rich in drapability can be produced, and the hot-roll method is preferable in that a bulky and flexible nonwoven fabric can be produced. Further, a core-sheath fiber, a side-by-side fiber, a split fiber, or the like, in which a fiber having a high melting point is used as a core and a fiber having a low melting point is used as a sheath, may be used.

The absorbent body 4 interposed between the back sheet 2 and the front sheet 3 is not limited as long as it is a material capable of absorbing and retaining body fluid, but preferably includes cotton-like pulp and a water-absorbent polymer. As the water-absorbent polymer, super absorbent polymer particulate powder (SAP): super absorbent resin), super absorbent polymer fiber (SAF): super absorbent fiber), and a combination thereof can be used. Examples of the pulp include pulp made of cellulose fibers such as chemical pulp obtained from wood and dissolving pulp, and pulp made of artificial cellulose fibers such as rayon and acetate. As a raw material of the chemical pulp, hardwood trees, coniferous trees, and the like can be used, but coniferous trees are preferably used because of a long fiber length and the like.

Further, synthetic fibers may be mixed in the absorbent body 4. As the synthetic fibers, polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof may be used, and 2 of them may be mixed and used. Further, a core-sheath fiber, a side-by-side fiber, a split fiber, or other composite fibers may be used, in which a fiber having a high melting point is used as a core and a fiber having a low melting point is used as a sheath. Further, a fiber in which hydrophobic fibers are surface-treated with a hydrophilic agent to impart affinity for body fluids may be used.

The thickness of the absorbent member 4 may be set to be in the range of 0.5 to 25mm, but is preferably in the range of 1.5 to 6.5 mm. The absorbent body 4 may not have a uniform thickness in the front surface region, and may be configured to bulge out the body fluid discharge opening corresponding region 40 and its vicinity and bulge out a portion corresponding to the gluteal fold (gluteal fold corresponding portion) and its vicinity. Further, the absorbent body 4 is preferably manufactured by a fiber-laying or air-laying method.

As the side nonwoven fabric 7, a water repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used. For example, when the effect of preventing permeation of menstrual blood, leucorrhea, or the like, or the texture of the skin is to be improved, it is preferable to use a water repellent nonwoven fabric coated with a silicon-based, paraffin-based, or alkylchromium chloride-based water repellent agent or the like. When the absorption of menstrual blood or the like in the flap W is to be improved, a nonwoven fabric subjected to hydrophilic treatment is preferably used as a material of the nonwoven fabric. As the type of nonwoven fabric, a soft through-air nonwoven fabric which is hardly creased, hardly wrinkled, is preferable.

In order to join the side nonwoven fabric 7 and the back sheet 2 and to improve rigidity, a pressing portion (embossing) having a dot shape or a predetermined shape may be provided at a predetermined position on the outer edge of the flap W, W.

The overall length of the absorbent article 1 may be 130 to 450mm, preferably 140 to 360mm, and more preferably 170 to 270 mm.

The absorbent article 1 is provided with a compressed groove (also referred to as a compressed groove or an embossed groove). The pressing groove is formed as a linear groove recessed from the front sheet 3 toward the back sheet 2. The extrusion groove has the following functions: the absorbent member 4 is prevented from being twisted, the transfer of body fluid to the surface or the inside is controlled, and the shape thereof is easily deformed to fit the body. The pressing groove can be formed as follows: the laminate in which the topsheet 3 is laminated on the absorbent member 4 is passed between a pair of pressure rollers. For example, a convex roller and a flat roller may be arranged on the topsheet 3 side and the absorbent member 4 side, respectively, and the laminate may be passed through.

As shown in fig. 1, the pressing groove includes a pair of front- rear direction grooves 10, 10 extending in the front-rear direction in line symmetry with a front-rear direction center line CL of the main body as a symmetry axis. The pair of front-rear direction squeezing grooves 10, 10 extend so as not to pass through the body fluid discharge port corresponding region 40, and extend along the side of the body fluid discharge port corresponding region 40, or so as to pass through a position laterally separated from the body fluid discharge port corresponding region 40 by a predetermined distance. The front-rear direction pressing grooves 10, 10 may be provided mainly in the central region M, or may extend beyond the central region M in the front-rear direction as shown in fig. 1. The front-rear direction pressing grooves 10, 10 may extend linearly as a whole, or may be curved in the middle as in the illustrated example. The pair of front- rear direction grooves 10, 10 need not be provided line-symmetrically. However, it is preferable that the pair of front- rear direction grooves 10, 10 be provided on both sides of the front-rear direction center line CL.

Since the pair of front-rear direction pressing grooves 10, 10 are present, the main body 8 of the absorbent article 1 is easily bent from the pressing grooves (flexible axes). Therefore, when the main body 8 receives forces from both legs from the sides when the absorbent article 1 is worn, the region between the front-rear direction pressing grooves 10, 10 is likely to bulge toward the body, and in particular, the fit of the central region M to the body can be improved.

The crush slots of the absorbent article 1 include end region crush slots 20 formed in at least one of the front end region F and the rear end region R. That is, the end region pressing groove 20 is a front end region pressing groove 21 formed in the front end region F and/or a rear end region pressing groove 22 formed in the rear end region R. In the example of fig. 1, both the front end region pressing groove 21 and the rear end region pressing groove 22 are formed.

The end region pressing groove 20 has such a shape that: this shape includes a substantially V-shape protruding toward the bodily fluid discharge port corresponding region 40. In the example of fig. 1, the front end region pressing groove 21 has a heart shape, has a V-shaped tip 21s protruding toward the body fluid discharge port corresponding region 40, and has a V-shaped tip 21 s' protruding toward the body fluid discharge port corresponding region 40 in the same manner in front of the tip 21 s. The rear end region pressing groove 22 has an inverted-heart shape, has a V-shaped tip 22s protruding toward the bodily fluid discharge port corresponding region 40, and has a V-shaped tip 22 s' protruding toward the bodily fluid discharge port corresponding region 40 at a position rearward of the tip 22 s. Thus, in the illustrated example, both the front end region pressing groove 21 and the rear end region pressing groove 22 have such shapes: the shapes each include a plurality of V-shaped portions.

In the example of fig. 1, the absorbent article 1 is symmetrical left and right, and also symmetrical front and back (in the figure, vertically symmetrical). That is, when one of the front end region pressing groove 21 and the rear end region pressing groove 22 is turned in the front-rear direction and overlaps the other, the dimensions and the shapes thereof are the same. However, the absorbent article 1 may not be symmetrical in the front-rear direction, and the front end region pressing groove 21 and the rear end region pressing groove 22 may be different in size and may not be symmetrical in the front-rear direction. The structure (including the shape) of the absorbent article 1 or the main body 8 may not be symmetrical.

The end region squeezing groove 20 has a shape including a substantially V-shape, and thus, when worn, the end region is easily bent in the width direction, i.e., in the front-rear direction, starting from the V-shaped portion. This makes it possible to form the end region of the body 8, which is flat before wearing, into a curved surface, or to deform the end region into a cup shape. Therefore, the end region of the absorbent article 1 can be made to fit naturally along the curve of the body on the front side and/or the back side of the body. Therefore, even when walking or exercising, the absorbent article 1 can follow the body, and therefore, a feeling of discomfort during wearing can be prevented. In addition, the following situations can be prevented: an excessive force is applied to the body-non-contact portion of the main body 8 to cause twisting.

It is preferable that the end portion pressing groove 20 has a V-shaped portion having the above-described V-shape, and the end 20s is located on the front-rear direction center line CL, because the end portion region can be bent with good left-right balance.

In this example, as shown in fig. 1 and 4, the front-rear direction squeezing grooves 10 and 10 extend beyond the substantially V-shaped end 20s of the end region squeezing groove 20 in the direction away from the body fluid discharge port corresponding region 40. In other words, as shown in fig. 4, when a virtual line extending in the width direction passing through the distal end 20s of the end region pressing groove 20 is X1, the front-rear direction pressing grooves 10, 10 extend beyond the virtual line X1 in the direction away from the central region M.

In this case, the front-rear direction squeezing grooves 10, 10 may extend in a direction away from the bodily fluid discharge port corresponding region 40 beyond the position of the substantially V-shaped end 21s of the front end region squeezing groove 21 in the front end region F, or may extend in a direction away from the bodily fluid discharge port corresponding region 40 beyond the position of the substantially V-shaped end 22s of the rear end region squeezing groove 22 in the rear end region R. As shown in the illustrated example, it is preferable that the front ends 11 and 11 of the front and rear direction squeezing grooves 10 and 10 extend beyond the V-shaped tip 21s of the front end region squeezing groove 21 formed in the front end region F in a direction away from the bodily fluid outlet port corresponding region 40 (toward the front of the body 8), and the rear ends 12 and 12 of the front and rear direction squeezing grooves 10 and 10 extend beyond the V-shaped tip 22s of the front end region squeezing groove 22 formed in the rear end region R in a direction away from the bodily fluid outlet port corresponding region 40 (toward the rear of the body 8).

According to the above configuration, the front-rear direction pressing grooves 10 and 10 also serve as starting points in the end regions, and the main body 8 can be deformed. Specifically, on the imaginary line X1 shown in fig. 4, the 3 points of the V-shaped end 21s of the front end region pressing groove 21 and the front ends 11 and 11 of the pair of front-rear direction pressing grooves 10 and 10 can be starting points of bending. On the imaginary line X2, the total of 4 positions of the front end portions 11 and 11 of the pair of front-rear direction pressing grooves 10 and the respective branched pressing grooves slightly forward of the V-shaped end 21s of the front end region 21 can be the starting points of bending. In the end region, such a plurality of bending starting points occur, whereby the planar main body 8 can be bent more naturally. Therefore, if the front end region F is provided, it can fit well to the curve of the pubic bone of the wearer, and if the rear end region R is provided, it can fit well to the curve of the hip of the wearer, so that it is possible to improve the wearing feeling and to prevent the body fluid from leaking out to the side of the end region squeezing groove 20.

As shown in fig. 1, the end portions of the front-rear direction pressing grooves 10 and 10 on the side extending beyond the position of the substantially V-shaped end 20s of the end region pressing groove 20 are curved or inclined inward in the width direction. In other words, the forward/rearward pressing grooves 10, 10 are formed so as to be closer to the forward/rearward center line as they are closer to the ends thereof.

The ends of the longitudinal pressing grooves 10, 10 may extend substantially parallel to the longitudinal center line CL, or may extend to be bent or curved inward or outward in the width direction. However, it is preferable that the ends of the front-rear direction pressing grooves 10, 10 are bent inward in the width direction.

In this case, either one of the front end portions 11, 11 and the rear end portions 12, 12 of the front-rear direction pressing grooves 10, 10 can be bent inward in the width direction, but it is preferable that the front end portions 11, 11 of the front-rear direction pressing grooves 10, 10 are bent inward in the width direction. As shown in the example, it is preferable that the front end portions 11 and 11 of the front and rear direction pressing grooves 10 and 10 are curved inward in the width direction in the front end region F, and the rear end portions 12 and 12 of the front and rear direction pressing grooves 10 and 10 are curved inward in the width direction in the rear end region R. The front end portions 11 and 11 of the front and rear direction pressing grooves 10 and 10 are portions having a certain length including front end edges of the front and rear direction pressing grooves 10 and 10, and the rear end portions 12 and 12 are portions having a certain length including rear end edges of the front and rear direction pressing grooves 10 and 10.

As described above, when the end regions are made to follow the body when the wearer wears the garment, the end regions of the front and rear direction pressing grooves 10, 10 are easily bent toward the body more forward and/or rearward than the end regions of the front and rear direction pressing grooves 10, 10. Therefore, the body 8 can be fitted (closely fitted) more well along the curve of the body. In addition, the leakage of the body fluid from the side of the end region squeezing groove 20 can be more favorably prevented.

The degree of curvature of the end portion of the longitudinal compressed groove 10 is not particularly limited, but the angle α formed by the extending direction of the curved end portion and the longitudinal centerline CL is preferably 10 to 80 °, more preferably 10 to 50 °, and still more preferably 15 to 40 °. By setting the angle α to the above range, the following effects can be further improved: the end regions are bent in a manner adapted to the body curve, thereby improving the fit.

The angle α may be, for example, an angle formed by a tangent to a center line (groove center line) perpendicular to the width direction of the longitudinal pressing groove 10 and the longitudinal center line CL. The angle α may be the maximum value of the angle formed by the tangent to the groove center line of the longitudinal pressing groove 10 and the longitudinal center line CL.

Fig. 3 mainly shows an enlarged view of the front portion of the absorbent article 1 of fig. 1. In the example of fig. 3, the angle formed by a tangent Y1, which is a groove center line at the end 11 of the front-rear direction pressing groove 10, and a line Y2 parallel to the front-rear direction center line CL shows the angle α.

The angle β of the V-shape of the end region pressing groove 20 is not particularly limited, but is preferably 60 to 150 °, more preferably 90 to 130 °, and still more preferably 100 to 120 °. By setting the angle β in the above range, the deformation of the end region can be more suitable for the curve of the body.

When the V-shaped portion included in the end region squeezing groove 20 is formed by connecting 2 grooves extending in a straight line, the angle β can be an angle formed by the groove center lines of the 2 grooves. In addition, when the V-shaped portion included in the end region compressed groove 20 is formed by connecting 2 grooves extending in a curved manner, the angle formed by the tangent to the groove center line of the 2 grooves can be set.

In the illustrated example, the end 20s of the V-shaped portion of the end region extrusion groove 20 is formed by connecting 2 extrusion grooves, but if the following effects are obtained: the 2 pressing grooves may not be connected to each other, so that the front and/or rear deformation of the main body from the end 20s can be performed to fit the body, thereby improving the fitting property. However, even in this case, it is preferable that: the positions where the extended lines of the groove center lines of the 2 extrusion grooves are connected are on the front-rear direction center line CL.

In fig. 4, an enlarged view of a front portion of the absorbent article 1 of fig. 1 is mainly shown, as in fig. 3. In fig. 4, an imaginary line passing through the V-shaped distal end 21s of the front end region pressing groove 21 and extending in the width direction is X1, an imaginary line passing through the distal ends (terminal ends) 11s, 11s of the front-rear direction pressing grooves 10, 10 and extending in the width direction is X2, and an interval between the imaginary line X1 and the imaginary line X2 is a. That is, the interval a is an interval in the front-rear direction between the position of the distal end 21s of the front end region pressing groove 21 and the positions of the distal ends 11s, 11s of the front ends 11, 11 of the front direction pressing grooves 10, 10.

The distance a is preferably 2.0 to 8.0mm, more preferably 3.0 to 6.0 mm. By setting the interval a to 2.0mm or more, the function of acting with the front-rear direction pressing grooves 10, 10 as the starting point of bending can be exhibited. Further, by setting the interval a to 8.0mm or less, it is possible to prevent the end regions from being excessively given rigidity by pressing the grooves 10, 10 in the front-rear direction, and thus prevent a feeling of discomfort when worn.

The front-rear direction pressing grooves 10, 10 may include: a high extrusion portion 18; and a low-compressed part 19 depressed more shallowly than the high-compressed part 18 (fig. 1 and 4). In the drawing, the high-compressed part 18 is shown in black, and the low-compressed part 19 is shown in white (colorless). The pressing depth of the high pressing portion 18 and the low pressing portion 19 is not particularly limited, and the high pressing portion 18 may be a portion formed relatively deeper than the bottom surface of the low pressing portion 19 by a groove depth of about 0.5mm to 3 mm. By using a pressure roller having irregularities corresponding to a desired configuration, such a configuration of a pressing groove including a high-pressing portion and a low-pressing portion can be obtained. For example, a pressure roller can be used that: the extrusion device is provided with a convex part corresponding to the shape of the whole extrusion groove, and the convex part is provided with a fine convex part corresponding to the high extrusion part. In addition, the above-described configuration of the extrusion groove can be obtained by forming the low extrusion portion at a relatively low pressure in the region where the extrusion groove is to be formed, and then forming the high extrusion portion at a relatively high pressure in a part of the region of the formed low extrusion portion. The depth of the pressing portion can be adjusted by adjusting the pressing of the pressing roller used for forming the pressing groove.

When the front-rear direction pressing grooves 10, 10 have the high pressing portions 18 and the low pressing portions 19, it is preferable that the portions of the front-rear direction pressing grooves 10, 10 extending beyond the position of the V-shaped distal end 20s of the end region pressing groove 20 do not have the high pressing portions 18. That is, as shown in fig. 3, it is preferable that the front-rear direction pressing grooves 10, 10 do not have the high pressing portions 18 in the range in the front-rear direction between the imaginary line X1 and the imaginary line X2.

Since the high-pressure portions 18 are portions that are pressed with a stronger pressure, if the high-pressure portions 18 are provided and if the high-pressure portions 18 are densely provided, the rigidity of the portions becomes greater, and the flexibility around the pressing groove decreases. Therefore, by not providing the high squeezing portions 18 in the portions of the front-rear direction squeezing grooves 10, 10 that extend beyond the position of the V-shaped end 20s of the end region squeezing groove 20, it is possible to suppress a decrease in flexibility in the vicinity of the ends of the front-rear direction squeezing grooves 10, 10 and in the peripheral regions thereof. This can maintain the function that the end portions of the front-rear direction pressing grooves 10, 10 become the starting points of the bending, and can reduce or prevent the uncomfortable feeling caused by the abutment of the vicinity of the end portions of the front-rear direction pressing grooves 10, 10 and the peripheral region thereof.

In the illustrated example, the high squeezing portions 18 are not provided in the portions of the front-rear direction squeezing grooves 10, 10 that extend beyond the position of the V-shaped distal end 20s of the end region squeezing groove 20, but the rigidity of the front-rear direction squeezing grooves 10, 10 in the region between the virtual line X1 and the virtual line X2 can be reduced by reducing the size of the high squeezing portions 18 themselves or reducing the pitch between the high squeezing portions 18. Such a configuration also helps to reduce or prevent discomfort.

Further, a configuration including a high-pressure portion and a low-pressure portion may be provided in the pressure grooves other than the front-rear direction pressure grooves 10, 10. In the illustrated example, the end region pressing groove 20 (the front end region pressing groove 21 and the rear end region pressing groove 22) is also provided with a high pressing portion and a low pressing portion.

The front-rear direction pressing grooves 10, 10 and the end region pressing groove 20 may be coupled together or may be separated. However, if the front-rear direction pressing grooves 10, 10 and the end region pressing groove 20 are separated, it is possible to avoid that the rigidity becomes excessively high at the side portion of the end region. This can reduce the discomfort at the end regions when worn.

In fig. 4, the interval between the front-rear direction pressing grooves 10, 10 and the end region pressing groove 20 is denoted by b. The interval b is the shortest distance between the front-rear direction pressing grooves 10, 10 and the end region pressing groove 20. The interval b is preferably 5 to 15mm, and more preferably 7 to 10 mm.

In the illustrated example, the shape including the substantially V-shape of the front end region compressed groove 21 is a heart shape including 1 annular compressed groove, but the shape is not limited to the illustrated shape. For example, the shape may be a V-shape as shown in fig. 5 (a), or may be a water droplet shape as shown in fig. 5 (b). As shown in fig. 5 (c), the following shape may be used: the whole is heart-shaped, but is broken in the front-rear direction. Further, as shown in fig. 5 (d), a plurality of V-shapes may be arranged in the front-rear direction.

As shown in fig. 1, 3, 4, and 5 (c) and (d), a shape including a plurality of V-shaped portions protruding toward the bodily fluid discharge port corresponding region 40 is preferable from the viewpoint of deforming the body 8 along the curve of the body because a plurality of bending starting points are formed in the front-rear direction when the body 8 is bent. Both (c) and (d) of fig. 5 have a plurality of V-shaped ends 20s, 20 s'. On the other hand, a shape having 1 tip 20s protruding toward the bodily fluid discharge port corresponding region 40 as shown in fig. 5 (a) and (b) is preferable from the viewpoint of preventing stiffness, because the density of the squeezing portions can be avoided and the rigidity can be reduced.

Although the features of the absorbent article 1 have been mainly described above with respect to the front end region F of the main body 8, the same features are also provided in the rear end region R of the absorbent article 1.

Fig. 6 shows an absorbent article 601 according to another embodiment of the present invention. The absorbent article 601 has a main body 608, similar to the absorbent article 1, the main body 608 including a front sheet 603, an absorber, and a back sheet, and the absorbent article 601 includes: a pair of front-rear direction pressing grooves 610, 610 which are bilaterally symmetrical with respect to the front-rear direction center line CL as a symmetry axis; and an end region pressing groove 620 having a shape including a substantially V shape protruding toward the bodily fluid discharge port corresponding region 40, the front-rear direction pressing grooves 610, 610 extending beyond a position of a substantially V-shaped tip 620s of the end region pressing groove 620 in a direction away from the bodily fluid discharge port corresponding region 40. However, in the absorbent article 601, the length of the rear end region R and the length of the front-rear direction compressed grooves 610, 610 are longer than those of the absorbent article 1. The end region pressing groove is provided with a front end region pressing groove 620, and the rear end region F is not provided with an end region pressing groove.

In the absorbent article 601, since the front end portions 611, 611 of the front direction pressing grooves 610, 610 are curved inward in the width direction, the front end region F can be curved naturally along the curve of the pubic bone even when the front end region F is made to follow the body when worn.

In the case where the end portion 611 of the forward/backward pressing groove 610 is bent, the angle α formed by the extending direction of the end portion 611 and the forward/backward center line CL is preferably 10 to 50 °, and more preferably 15 to 30 °.

In the absorbent article 601, the pair of front-rear direction compressed grooves 610, 610 are connected to each other in the rear end region R. With such a shape, leakage toward the rear can be prevented. Therefore, the absorbent article 601 shown in fig. 6 is particularly suitable for use as a sanitary napkin for night use or long-term use.

A first aspect of the present invention is an absorbent article including a main body having: a liquid-permeable front sheet; a liquid-impermeable back sheet; and an absorber provided between the front sheet and the back sheet, wherein the main body has such an elongated shape that: the main body has a predetermined length in a front-rear direction and a predetermined width in a width direction perpendicular to the front-rear direction, and includes: a central region including a body fluid discharge port-corresponding region corresponding to a body fluid discharge port of a wearer when worn; a front end region located forward of the central region; and a rear end region located rearward of the central region, the body having a pressing groove recessed from the front surface sheet side to the rear surface sheet side, the pressing groove having: a pair of front-rear direction pressing grooves extending in the front-rear direction line-symmetrically with a center line of the main body extending in the front-rear direction as a symmetry axis; and an end region pressing groove formed in at least one of the front end region and the rear end region and having a shape including a substantially V-shape protruding toward the body fluid discharge port corresponding region, wherein the front-rear direction pressing groove extends beyond a position of a tip of the substantially V-shape of the end region pressing groove in a direction away from the body fluid discharge port corresponding region.

Hereinafter, preferred embodiments of the present invention will be described.

(attached note 1)

An aspect of note 1 is an absorbent article including a main body having: a liquid-permeable front sheet; a liquid-impermeable back sheet; and an absorber provided between the front sheet and the back sheet, wherein the main body has such an elongated shape that: the main body has a predetermined length in a front-rear direction and a predetermined width in a width direction perpendicular to the front-rear direction, and includes: a central region including a body fluid discharge port-corresponding region corresponding to a body fluid discharge port of a wearer when worn; a forward end region forward of the central region; and a rear end region rearward of the central region, the body having a pressing groove recessed from the front surface sheet side to the rear surface sheet side, the pressing groove having: a pair of front-rear direction pressing grooves extending in the front-rear direction; and an end region pressing groove formed in at least one of the front end region and the rear end region and having a shape including a substantially V-shape protruding toward the body fluid discharge port corresponding region, wherein the front-rear direction pressing groove extends beyond a position of a distal end of the substantially V-shape of the end region pressing groove in a direction away from the body fluid discharge port corresponding region.

According to the aspect of supplementary note 1, since the end portion region pressing groove is provided which is formed in at least one end portion region and has a shape including a substantially V shape, the end portion of the substantially V shape of the end portion pressing groove becomes a starting point, and the end portion region of the absorbent article main body is easily bent in the front-rear direction, and is also easily bent in the width direction along the 2 grooves extending from the ends of the substantially V shape. Further, since the front-rear direction pressing groove extends beyond the position of the substantially V-shaped end of the end region pressing groove, the front-rear direction pressing groove also serves as a starting point and allows the side portion of the end region to be deformed. Therefore, the end region of the main body can be deformed along the curve of the body to be favorably fitted to the body, and the wearing feeling can be improved.

(attached note 2)

In the aspect of supplementary note 2, the at least one end portion of the front-rear direction pressing groove is curved inward in the width direction.

According to the aspect of supplementary note 2, the end portion of the front-rear direction pressing groove is curved inward in the width direction and is directed toward the end region pressing groove. This makes it easier for the region on the front side and/or the rear side of the end of the longitudinal pressing groove to bend toward the body, and therefore the absorbent article main body can fit better along the curve of the body.

(attached note 3)

In the aspect of supplementary note 3, a distance between a position of the substantially V-shaped distal end of the end region pressing groove and a position of a distal end of a portion of the front-rear direction pressing groove extending beyond the distal end position in the front-rear direction is 2.0mm to 8.0 mm.

According to the aspect of supplementary note 3, the distance in the front-rear direction between the position of the substantially V-shaped end of the end region pressing groove and the position of the end of the portion of the front-rear direction pressing groove extending beyond the position of the substantially V-shaped end of the end region pressing groove is limited to a predetermined range. This can maintain the function of the front-rear direction pressing groove as a bending start point, while preventing the following: the rigidity of the end region becomes too high due to the front-rear direction pressing groove, and a feeling of discomfort is generated when wearing.

(attached note 4)

In the aspect of supplementary note 4, the forward/rearward pressing groove includes: a high extrusion part; and a low compressed portion recessed shallower than the high compressed portion, wherein a portion of the front-rear direction compressed groove extending beyond a position of a distal end of the substantially V-shaped compressed groove of the end region is free of the high compressed portion.

According to the aspect of supplementary note 4, the portion of the front-rear direction pressing groove extending beyond the position of the substantially V-shaped end of the end region pressing groove does not have the high pressing portion, and thus the rigidity of the portion of the front-rear direction pressing groove extending beyond the end of the end region pressing groove can be made relatively small. Therefore, the function of the front-rear direction pressing groove as a bending start point can be maintained, and the following can be prevented: the end portions of the front-rear direction pressing groove are excessively rigid, and thus give a feeling of discomfort when in contact with the skin.

(attached note 5)

In the embodiment of supplementary note 5, the angle of the substantially V-shaped V is 60 ° to 150 °.

According to the aspect of supplementary note 5, the substantially V-shaped angle of the end region pressing groove is set to a predetermined angle, so that natural deformation of the main body along the body curve can be realized.

(attached note 6)

In the mode of supplementary note 6, the front-rear direction pressing groove and the end region pressing groove are separated in the width direction.

According to the aspect of supplementary note 6, since the front-rear direction pressing groove and the end region pressing groove are formed separately, it is possible to prevent the pressing grooves from being dense and the rigidity from becoming excessively high.

(attached note 7)

In the aspect of supplementary note 7, the end region pressing groove is formed in the front end region, and the pair of front-rear direction pressing grooves are connected to each other in the rear end region.

According to the aspect of supplementary note 7, since the end region pressing groove is provided in the front end region and the pair of front-rear direction pressing grooves are connected to each other in the rear end region, the effect obtained according to the first aspect can be obtained in the front end region of the absorbent article main body, and on the other hand, since the pair of front-rear direction pressing grooves are closed in the rear end region, leakage toward the rear can be prevented satisfactorily.

The priority of Japanese patent application No. 2017-119743, filed in the patent office of Japan on the year 6/19/2017, to which this application claims, is incorporated herein by reference in its entirety.

Description of the reference symbols

1. 601, a step of: an absorbent article;

2: a back sheet;

3. 603: a dough sheet;

4: an absorbent body;

5: wrapping the sheet;

7: a side nonwoven fabric;

8. 608: a main body (absorbent article main body);

10. 610: a fore-and-aft direction extrusion groove;

11. 611: an end portion in front of the front-rear direction pressing groove;

11 s: a front end of the front-rear direction extrusion groove;

12 s: the rear end of the front-rear direction extrusion groove;

12: the rear end part of the front and rear direction extrusion groove;

18: a high extrusion part;

19: a low extrusion portion;

20. 620: an end region extrusion groove;

21: a forward end region extrusion slot;

22: a rear end region extrusion groove;

20s, 20s ', 21s ', 22s ', 620 s: the end of the V;

40. 640: a body fluid discharge port corresponding region;

CL: a front-rear direction centerline;

f: a front end region;

m: a central region;

r: a rear end region;

w: and (4) a wing.