JP2018149004A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article which prevents wrinkles and twists in an end part area and is excellent in wear feeling.SOLUTION: An absorbent article 1 where compression grooves recessed from a surface sheet 3 side to a rear surface sheet 2 side are formed on a body 8. The compression grooves have a pair of back and forth direction compression grooves 11, a forward width direction compression groove 14, and a rear width direction compression groove 15. The forward width direction compression groove and the rear width direction compression groove are joined to the pair of back and forth direction compression grooves to form oblong annular compression grooves in the back and forth direction. In front of and/or at the back of the absorbent article, inside the annular compression grooves, a planar compression part 12 formed on a center line CL is formed. The planar compression part is formed in a central area of areas obtained by evenly dividing a maximum distance between the pair of back and forth direction compression grooves into three in a width direction within a range of the back and forth direction of the planar compression part, and includes a part whose total length in the width direction of the planar compression part is larger than the total length in the width direction of the back and forth direction compression grooves on a line orthogonal to the center line.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an absorbent article.

  Conventionally, in absorbent articles such as panty liners, sanitary napkins and incontinence pads, the absorbent is used for the purpose of controlling the transfer of absorbed body fluids and deforming the body according to the shape of the body. It is known to form a linear compressed groove in an article body.

  For example, Patent Document 1 discloses a vertically long absorbent article in which a compression groove including a pair of first central grooves and a heart-shaped first design groove is formed on the skin contact surface.

  Patent Document 2 has a front pressing groove extending in the width direction in the front region and a pair of vertical pressing grooves extending in the longitudinal direction on both side portions along the longitudinal direction in the excretory part facing region. The compressed groove is connected while forming a constricted portion that is constricted toward the inner side in the width direction, and the front compressed groove has an indented portion that is recessed toward the rear side in the center portion in the width direction. An article is disclosed.

  In any of the absorbent articles of Patent Literatures 1 and 2, an annular squeezing groove that is long in the front-rear direction is formed around a region corresponding to the body fluid discharge port.

JP 2013-255861 A JP-A-2015-97719

  When the absorbent article is worn along the roundness of the body and a force from both legs is applied to the absorbent article, the force is easily transmitted to the front and rear end regions through the squeezing grooves. Therefore, wrinkles and twists are likely to occur in the end region, particularly the inner side of the annular pressing groove. As a result, the absorbent article may not fit well with the body and leakage of body fluid may occur.

  The pressing groove provided in the absorbent article of Patent Document 1 is not formed from the viewpoint of preventing wrinkles and the like in the end region. Therefore, when the force from both legs is applied to the absorbent article, wrinkles and twists inside the annular pressing groove may not be sufficiently prevented.

  Moreover, in the absorbent article of patent document 2, it is set as the structure where it is hard to generate | occur | produce a front eaves by making it easy to bend from the hollow part of a front pressing groove as a starting point. However, there is a possibility that the wearing feeling of the absorbent article may be impaired when the bent portion starts from the depression and protrudes against the skin.

  In view of the above points, an object of the present invention is to provide an absorbent article that prevents wrinkles and twists in the end region and has an excellent wearing feeling.

  In order to solve the above-mentioned problem, a first aspect of the present invention includes a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body provided between the top sheet and the back sheet. The main body has an elongated shape having a predetermined length in the front-rear direction and a predetermined width in a direction orthogonal to the front-rear direction, A pressing groove recessed from the top sheet side to the back sheet side is formed, and the pressing groove is formed symmetrically about a center line extending in the front-rear direction of the main body as a symmetry axis, and extends in the front-rear direction. A pair of front and rear direction compressed grooves, a front width direction compressed groove extending in the width direction in front of the pair of front and rear direction compressed grooves, and a rear width direction compressed groove extending in the width direction behind the pair of front and rear direction compressed grooves. And the forward width direction compressed groove is Connected to each front end of the pair of front and rear squeezing grooves, and the rear width direction squeezing groove is connected to each rear end of the pair of front and rear squeezing grooves to form an elongated annular pressing groove in the front and rear direction, At the front and / or rear of the absorbent article, a planar compressed part formed on the center line is formed inside the annular compressed groove, and the planar compressed part is the planar compressed part. Is formed in a central region obtained by dividing the maximum distance between the pair of longitudinal compression grooves in the longitudinal direction into three equal parts in the width direction, and the planar compression is performed on a line orthogonal to the central line. The sum of the length of the width direction of a part contains the part larger than the sum of the length of the width direction of the said front-back direction pressing groove.

  In the said 1st form, a planar pressing part is provided by forming a planar pressing part by the predetermined magnitude | size in the predetermined area | region inside an annular pressing groove in the front and / or back of an absorbent article. It is possible to increase the rigidity of the area and the surrounding area, and to give the absorbent article body firmness. Therefore, wrinkles and twists are less likely to occur in the front and / or rear end regions, and the absorbent article can be well fitted to the body, and leakage and the like can be prevented. In addition, since the planar compressed portion is on the center line, it is possible to prevent the inner region of the annular compressed groove from being bent along the center line and hitting the portion with the skin, thereby obtaining an excellent wearing feeling. it can.

In a second embodiment of the present invention, the area of the planar compression portions is 25 to 100 mm ^2.

  According to the said 2nd form, while making the area of a planar pressing part into the predetermined range, while improving the effect which raises rigidity, the flexibility and elasticity of the area | region inside an annular pressing groove are ensured. be able to.

  In the 3rd form of this invention, the said planar pressing part contains a high pressing part and the low pressing part which the depth of the hollow was shallower than the said high pressing part formed in the periphery. The part is formed on the center line.

  According to the said 3rd form, when a planar pressing part has a high pressing part and a low pressing part, it is prevented that a surface sheet is torn in the case of formation of a pressing part. Moreover, while a high pressing part is arrange | positioned on a centerline, while preventing the bending of the main body in the centerline vicinity more effectively, the effect which raises rigidity can be exhibited with sufficient balance in the right and left of an absorbent article.

  In the fourth aspect of the present invention, the front-rear direction pressing groove includes a high-pressure pressing portion and a low-pressure pressing portion whose depth of the depression is shallower than that of the high-pressure pressing portion, and the surface on a line orthogonal to the center line. The sum of the lengths in the width direction of the high-pressure parts of the squeezed pressing part includes a portion that is larger than the total length in the width direction of the high-pressure parts of the front and rear direction pressing grooves.

  According to the said 4th form, since the high pressing part of the planar pressing part is formed in the predetermined area, the effect of the planar pressing part which provides rigidity to an edge part area | region can be improved further. .

  According to one embodiment of the present invention, it is possible to provide an absorbent article that is excellent in wearing feeling by preventing wrinkles and twisting in the end region.

It is a partially broken view of the absorbent article by one form of this invention. It is an II line sectional view of an absorptive article by one form of the present invention. It is a figure explaining the planar pressing part of the absorptive article by one form of the present invention. It is a figure explaining the planar pressing part of the absorptive article by one form of the present invention. It is a figure explaining the deformation | transformation at the time of mounting | wearing the absorbent article by one form of this invention. It is a figure which shows the absorbent article by another form of this invention.

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

  As shown in FIGS. 1 and 2, the absorbent article 1 includes a liquid-impervious back sheet 2, a liquid-permeable front sheet 3, and an absorbent body 4 provided between both the sheets 2 and 3. And a main body (absorbent article main body) 8 having. In order to maintain the shape of the absorbent body 4, the absorbent body 4 may be wrapped with an encapsulating sheet 5 made of crepe paper or nonwoven fabric.

  As shown in FIG. 1, the main body 8 has an elongated shape having a predetermined length in the front-rear direction as a whole, and has a substantially constant width in a direction orthogonal to the front-rear direction. And the absorbent article 1 has a substantially line-symmetric shape with respect to the center line CL extending in the front-rear direction. Further, the absorbent article 1 includes a region (body fluid discharge port corresponding region) 20 corresponding to the body fluid discharge port, a central region M including the body fluid discharge port corresponding region 20, and a front end portion in front of the center region M. It has a region F and a rear end region R located behind the central region M. The central region M has wings WG extending from both sides thereof. The front end region F can be a region in front of the wing WG starting position, and the rear end region R can be a region behind the wing WG starting position.

  At the front and rear edge portions of the absorber 4, the outer edge of the back sheet 2 and the outer edge of the top sheet 3 are joined by an adhesive such as hot melt, or an adhesive means such as heat seal or ultrasonic seal. Moreover, the side nonwoven fabric 7 is provided in the both sides by the side of a surface sheet along the front-back direction (longitudinal direction), respectively. The side nonwoven fabric 7 partially protrudes to the side of the main body 8 and is laminated on the back sheet 2 which also protrudes to the side. The side nonwoven fabric 7 is bonded by an adhesive such as hot melt or an adhesive means such as heat seal or ultrasonic seal. Thus, wings WG are formed on both side portions of the main body 8.

  As the back sheet 2, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene can be used. A laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or a laminated sheet of a nonwoven fabric that is substantially impervious to liquid by interposing a waterproof film can be used. Further, it is more desirable to use a material having moisture permeability from the viewpoint of preventing stuffiness. As such a water-impervious / breathable sheet material, a sheet obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet and then stretching it in a uniaxial or biaxial direction can be obtained. A porous sheet can be used.

  The top sheet 3 is a liquid-permeable sheet that quickly permeates body fluids such as menstrual blood, venom, and urine. As the surface sheet 3, a porous or non-porous nonwoven fabric, a porous plastic sheet, or the like is preferably used. Examples of the material fibers constituting the nonwoven fabric include olefins such as polyethylene and polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and cupra, and blended fibers thereof, and natural fibers such as cotton alone or Two or more types can be used in combination. Examples of the nonwoven fabric processing method include a spunlace method, a spunbond method, a thermal bond method, a melt blown method, and a needle punch method. Among these processing methods, the spunlace method is preferable in terms of flexibility and the spunbond method is preferable in that it can produce a nonwoven fabric rich in drape, and the thermal bond method is preferable in terms of the ability to manufacture a bulky and soft nonwoven fabric. 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 be used.

  The absorbent body 4 interposed between the back sheet 2 and the top sheet 3 is not limited as long as it is a material that can absorb and retain body fluid, but preferably contains cotton-like pulp and a water-absorbing polymer. As the water-absorbing polymer, a superabsorbent polymer (SAP), a superabsorbent fiber (SAF), and a combination thereof can be used. Examples of pulp include cellulose fibers such as chemical pulp obtained from wood and dissolved pulp, and artificial cellulose fibers such as rayon and acetate. As raw materials for chemical pulp, hardwood, softwood, etc. are used, but softwood is preferably used because of its long fiber length.

  Further, the absorbent body 4 may be mixed with synthetic fibers. As synthetic fibers, polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It can also be used. In addition, composite fibers such as a core-sheath fiber, a side-by-side fiber, and 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 addition, it is also possible to use a hydrophobic fiber that has been surface treated with a hydrophilizing agent to impart affinity to body fluids.

  The thickness of the absorber 4 can be in the range of 0.5 to 25 mm, and is preferably in the range of 1.5 to 6.5 mm. The absorbent body 4 does not have to have a uniform thickness over the front surface, and may have a structure in which a body fluid discharge port corresponding region or the like is bulged. In addition, the absorbent body 4 is preferably manufactured by a stacking fiber or an airlaid method.

  As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used. For example, in order to increase the effect of preventing permeation of menstrual blood or vaginal discharge or the feeling of touch, it is preferable to use a water-repellent treated non-woven fabric coated with a silicon-based, paraffin-based, alkyl chromium chloride-based water repellent or the like. . Moreover, when improving the absorptivity such as menstrual blood in the wing WG, it is preferable to use a nonwoven fabric subjected to hydrophilic treatment as the material of the nonwoven fabric. As a kind of the nonwoven fabric, a soft air-through nonwoven fabric which is difficult to crease and hardly wrinkles is preferable.

  On the outer edge of the wing WG, in order to join the side nonwoven fabric 7 and the back sheet 2 and to increase the rigidity, a pressing portion (emboss) having a dot shape or a predetermined shape can be provided at a predetermined location.

  The total length of the absorbent article 1 can be 130 to 450 mm, 140 to 360 mm, or 170 to 270 mm.

  As shown in FIG. 1, the absorbent article 1 of this embodiment is provided with a plurality of compressed grooves (also referred to as compressed grooves or embosses). This compressed groove is formed as a groove recessed from the top sheet 3 to the back sheet 2 for the purpose of facilitating deformation adapted to the shape of the body and controlling the transfer of body fluid on the surface or inside. It is a thing. Such a groove | channel can be formed by passing the laminated body which laminated | stacked the surface sheet 3 on the absorber 4 between a pair of pressurization rolls. For example, the laminate can be formed by allowing the convex roll and the flat roll to pass through the top sheet 3 side and the absorber 4 side, respectively.

  The squeezing grooves include a pair of front and rear squeezing grooves 11 and 11 extending in the front-rear direction in line symmetry with the center line CL extending in the front-rear direction of the main body 8 as the symmetry axis. The front-rear direction squeezing grooves 11, 11 can be provided in a range exceeding the front-rear direction range of the body fluid discharge port corresponding region 20 in the central region M. Moreover, the front-rear direction squeezing grooves 11 and 11 can be provided over the central region M and further beyond the central region M in the front-rear direction, as shown in FIG. By having the front and rear squeezing grooves 11, 11, the side part of the absorbent article can be easily bent at the time of wearing, the body fluid discharge port corresponding region 20 can be raised, and the fit to the body can be enhanced.

  The front-rear direction squeezing grooves 11, 11 may be linear or curved. In that case, as shown in FIG. 1, you may curve so that it may become concave in the width direction inner side, and you may curve so that it may become convex in the width direction outer side. When it is curved in a concave shape inward in the width direction, it is preferable in that the absorbent article 1 can be naturally deformed along the roundness of both legs (both thighs) when worn.

  The front-rear direction pressing grooves 11 and 11 include a high-pressure pressing part 11a and a low-pressure pressing part 11b (FIG. 2). Although the pressing depth of this high pressing part 11a and the low pressing part 11b is not specifically limited, the high pressing part 11a forms the groove depth relatively deeply about 0.5 mm-3 mm from the bottom face of the low pressing part 11b. The part may be

  Further, in the front of the pair of front and rear squeezing grooves, the squeezing groove, in front of the pair of front and rear squeezing grooves, and the front width direction pressing groove 14 extending in the width direction symmetrically with the center line CL as the axis of symmetry, And a rear width direction compressed groove 15 extending in the width direction symmetrically about the center line CL as an axis of symmetry. By the front width direction pressing groove 14 and the rear width direction pressing groove 15, body fluid absorbed by the absorbent body can be prevented from leaking in the front-rear direction.

  The front width direction squeezing groove 14 and the rear width direction squeezing groove 15 may extend linearly in the width direction, or may be curved so as to be convex toward the front end and the rear end, respectively. Good. Moreover, the shape which has an unevenness | corrugation may be sufficient as the front width direction pressing groove 14 and the back width direction pressing groove 15 as shown in FIG. That is, it may be a shape having a convex portion that protrudes to the outermost side and a concave portion on both sides thereof at a position that intersects the center line CL.

  As shown in FIG. 1, the front width direction pressing groove 14 is connected to each front end of the pair of front and rear direction pressing grooves 11, 11, and the rear width direction pressing groove 15 is each rear end of the pair of front and rear direction pressing grooves 11, 11. Thus, an elongated annular pressing groove (entire circumferential groove) is formed. When such an annular pressing groove is formed, leakage of body fluid absorbed in all directions of the absorbent article 1 can be prevented.

  In FIG. 5, the state at the time of mounting | wearing of the absorbent article 1 is shown typically. As shown in FIG. 5, when the absorbent article 1 is mounted along the roundness of the body B, the front end region F and the rear rear end at the front and rear, respectively, from the central region including the body fluid discharge port corresponding region 20. The region R (also referred to as an end region) is bent toward the skin side. Therefore, stress is easily applied to the end region. Further, in the mounted state, the absorbent article 1 is normally applied with force from both legs (both thighs) from both sides. At that time, the force applied to the absorbent article 1 is transmitted in the front-rear direction via the pair of front-rear direction squeezing grooves 11, 11, and the front and rear end regions are easily pulled. Therefore, when the absorbent article 1 is worn for a long time or when the user continues walking, wrinkles and twists are likely to occur in the end region.

  On the other hand, in this embodiment, a planar compressed portion 12 having a predetermined size is formed at a predetermined position inside the annular compressed groove on the center line CL in front and / or rear of the absorbent article 1. ing.

  The planar compressed portion 12 is a relatively large planar compressed groove that occupies a predetermined region, unlike a linear groove such as an annular compressed groove. By forming such a planar squeezed part 12 at a predetermined position inside the annular squeezing groove, the rigidity of the main body 8 at that position can be increased. Thereby, a wrinkle becomes difficult to enter into the area | region in which the planar pressing part 12 was provided, and its peripheral area | region, and it becomes difficult to produce a twist. Therefore, even when the stiffness of the main body 8 is reduced normally, such as when the main body 8 contains a large amount of body fluid, the initial appropriate mounting state can be maintained.

  Moreover, since the planar pressing part 12 is provided on the center line CL, both sides of the center line CL are pulled and bent along the center line CL inside the annular pressing groove, and the bending line protrudes. It can prevent hitting the skin. Therefore, it is possible to prevent a sense of discomfort in the end region when the absorbent article 1 is worn along the body.

  Moreover, the planar pressing part 12 is independent from the annular pressing groove (front-rear direction pressing grooves 11, 11, the front width direction pressing groove 14, and the rear width direction pressing groove 15), that is, connected to the annular pressing groove. Not formed. Therefore, even when the force received by the side parts of the main body from both legs is transmitted along the squeezing groove to the end region at the time of mounting, the force is not directly transmitted from the annular squeezing groove to the planar squeezing part 12. . Therefore, deformation inside the annular squeezing groove due to the force of both legs is unlikely to occur.

  The planar pressing part 12 divides the maximum distance D between the pair of front and rear direction pressing grooves 11, into three equal parts in the width direction, and is formed in a central region of them. That is, as shown in FIG. 3, it is formed in a region having a width d and having the center line CL as the center line. Here, the maximum distance D between the pair of front and rear direction pressing grooves 11 and 11 is the maximum distance in the front and rear direction range where the planar pressing grooves 12 are provided. The maximum distance D may be the largest distance between the front and rear direction compressed grooves 11 and 11.

  In the example of FIG. 3, the width d is one third of D (D / 3), but is preferably one fourth of D (D / 4).

  By concentrating and forming the planar compressed portion 12 at the predetermined position as described above, even when the end region is bent at the time of wearing and the force from both legs is applied to both sides, It can be effectively prevented, and bending at the center line CL can also be prevented.

  The planar pressing part 12 has a predetermined size. That is, when it cuts in the direction orthogonal to the centerline CL, the length of the width direction of the planar pressing part 12 contains a part larger than the sum total of the length of the width direction of the front-back direction pressing groove 11. FIG. For example, as shown in FIG. 3, when the absorbent article 1 is cut along a virtual line X extending in a direction orthogonal to the center line CL, the length L2 in the width direction of the planar compressed portion 12 on the virtual line X is The total length in the width direction of the front-rear direction pressing groove 11, that is, the total length L1 of the left front-rear direction pressing groove 11 and the length L1 'of the right front-rear direction pressing groove 11 in FIG. Part (L2> L1 + L1 ′).

  Moreover, it is preferable that 30% or more of the planar pressing grooves 12 satisfy the above condition, and more preferably 50% or more satisfy the above condition.

  In addition, on the virtual line X orthogonal to the center line CL, when there are a plurality of lengths in the width direction of the planar compressed portion 12, the total length in the width direction of the planar compressed portion 12 and the front and rear The sum of the lengths in the width direction of the direction pressing grooves 11 can be compared.

  Thus, the planar pressing part 12 is formed with the predetermined width | variety with respect to the distance and width between a pair of front-back direction pressing grooves 11 and 11. FIG. That is, the planar compressed portion 12 has a size that is balanced with respect to the arrangement and width between the front and rear direction compressed grooves 11 and 11. Therefore, the stress balance in the area | region inside a cyclic | annular pressing groove can be taken favorably, and a wrinkle and twist can be prevented. Therefore, even when the user continuously walks, for example, when the user continuously applies a force to the main body 8, wrinkles and twists in the end region can be prevented, and discomfort or discomfort during wearing can be prevented. .

  The planar pressing part 12 includes a high-pressure pressing part 12a and a low-pressure pressing part 12b formed on the periphery thereof and having a shallower depth than the high pressing part 12a (FIG. 2). In FIG.1 and FIG.3, a black area | region is the high pressing part 12a, and the white area | region in the line surrounding the periphery of this high pressing part 12b is the low pressing part 12b. The compression depth of the high-pressure expression part 12a and the low-pressure expression part 12b is not specifically limited, It can be set as the depth similar to the depth described about the high-pressure expression part 11a and the low-pressure expression part 11b of the front-rear direction compression grooves 11 and 11. .

  Although the planar pressing part 12 can also form the laminated body of the absorber 4 and the surface sheet 3 between a pair of pressure rolls similarly to the above-mentioned pressing groove, in that case, surface In particular, stress tends to concentrate on the compressed portion 12. Therefore, first, it goes through a two-step process in which the region including the illustrated low-pressure squeezed portion 11b and high-pressure squeezed portion 12b is squeezed at a lower pressure, and then the region of the high-pressure squeezed portion 12b is squeezed at a higher pressure. By this, the structure of the high pressing part 12a and the shallow low pressing part 12b surrounding it is formed. Thereby, it can prevent that the surface sheet 3 is torn by the concentrated stress.

  Moreover, it is preferable that the high pressing part 12a is formed on the centerline CL among the planar pressing parts 12. FIG. By forming the high pressing part 12a having a relatively large area across the center line CL, it is possible to exert an effect of preventing wrinkles inside the annular pressing groove with a good left-right balance in the width direction.

  The high pressure portion 12a of the planar compressed portion 12 has a length in the width direction of the high pressure portion 12a in the width direction of the high pressure portion 11a in the front-rear direction compressed groove 11 on a line orthogonal to the center line CL. Includes parts larger than the total. For example, as shown in FIG. 3, when the absorbent article 1 is cut along a virtual line X extending in a direction orthogonal to the center line CL, the width direction of the high-pressure squeezed part 12 a of the planar squeezed part 12 on the virtual line X Length L2a is the sum of the lengths in the width direction of the high-pressure parts 11a of the front-rear direction compressed grooves 11, that is, the length L1a of the high-pressure parts 11a of the left-side front-rear direction compressed grooves 11 in FIG. A portion (L2a> L1a + L1a ′) larger than the sum of the length L1a ′ of the direction compressed grooves 11 is included.

  It is preferable that 30% or more of the high pressure parts 12a of the planar compressed grooves 12 satisfy the above condition, and more preferably 50% or more satisfy the above condition.

  In addition, on the line orthogonal to the center line CL, when there are multiple lengths in the width direction of the high-pressure parts 12a of the planar pressing part 12, the total length in the width direction of the high-pressure parts 12a and the front and rear The sum of the lengths in the width direction of the high-pressure parts 11a of the direction pressing grooves 11 can be compared.

Area of the planar compressing portions 12, preferable to be 20 to 100 mm ^2, and more preferably a 40 to 80 mm ^2. By making the area 20 mm ² or more, the above effect of increasing the rigidity can be further exhibited, and by making the area 100 mm ² or less, maintaining the flexibility and elasticity of the inner region of the annular squeezing groove. Can do.

Also, preferably the area of the high compression portion 12a (when high compression portion 12a as described later consists of a plurality of portions, the total area of those portions), when is 15~30mm ^2, 18~28mm ² Is more preferable. The area of the low compression portion 12b is preferable to be 2～70Mm ^2, more preferably a 22~52mm ^2.

  Moreover, the maximum length in the width direction of the planar compressed portion 12 is preferably 6 to 12 mm, and more preferably 7.5 to 9.5 mm. Moreover, the maximum length in the front-rear direction of the planar compressed portion 12 is preferably 6 to 12 mm, more preferably 7 to 10 mm, and further preferably 8.5 to 9.5 mm.

  In the example of FIG.1 and FIG.3, the high pressing part 12a of the planar pressing part 12 has a petal-like shape formed by fusing four ellipses, and the low pressing part provided in the periphery. 12b has a shape similar to the high pressing part 12a. The shape of the high pressing part 12a and the low pressing part 12b is not limited to the thing of FIG. For example, as shown to (a)-(d) of FIG. 4, the shape of the high pressing part 12a can be made into circular, an ellipse, a star shape, and a heart shape, respectively, and the low pressing part 12b can be formed in the periphery. . The shapes of the high pressing portion 12a and the low pressing portion 12b may be similar to each other. Moreover, if the low pressing part 12b surrounds the high pressing part 12a, it can also be formed in the shape different from the shape of the high pressing part 12a.

  Moreover, as shown in FIG.4 (e), the high pressing part 12a can also be made into the aggregate | assembly of a some part. In that case, the shape and area of those portions may be different from each other. The plurality of parts of the high pressing portion 12a may or may not be on the center line CL, but if any one of the plurality of parts is on the center line CL, the effect of increasing the rigidity described above. Is more preferable.

  The position in the front-rear direction of the planar compressed portion 12 varies depending on the total length of the absorbent article 1, the shape and length of the wing WG, the thickness of the absorbent body, etc., but within the range of 5 to 25 mm from the end of the central region M. can do. Moreover, when the absorbent article 1 is attached to the underwear, it is preferable that the absorbent article 1 is within the range of the inner side in the front-rear direction from the end of the crotch portion. Thereby, the uncomfortable feeling by the point pressing part 12 and the seam of the edge part of the crotch part overlapping and contacting skin can be prevented.

  In the example of FIG. 1, the planar squeezed portion 12 is provided in both the front end region F and the rear end region R, but the planar squeezed portion 12 depends on the intended use of the absorbent article 1. , Either forward or backward. Since the front of the absorbent article 1 is usually bent at a larger angle toward the skin side when worn (FIG. 5), wrinkles are likely to occur. Therefore, it is preferable that the planar compressed portion 12 is provided at least in the front end region F.

  The absorbent article 1 may be provided with an auxiliary pressing groove 16 formed on the central region M side of the planar pressing portion 12. In the example of FIG. 1, auxiliary squeezing grooves 16 and 16 are formed on the front and rear sides, respectively, so as to be convex outward and extend in the width direction. The auxiliary squeezing grooves 16 and 16 prevent the body fluid from spreading forward and backward, and have a function of assisting the front end region F and the rear end region R to be bent along the body in the skin direction when worn. .

  In addition, as mentioned above, in the example of FIG. 1, the shape of the front width direction pressing groove 14 and the back width direction pressing groove 15 is the convex part which protrudes the outermost in the position which cross | intersects the centerline CL, and the recessed part of the both sides. It may have an unevenness including. In the case of having such irregularities, the body 8 is easy to bend starting from the concave portion, so that the fit to the body is high. Moreover, in the illustrated embodiment, since the recesses are provided on both sides of the center line CL, even if a large force is applied to the inner region of the annular squeezing groove in the end region, there are a plurality of places that bend from the recess. Due to the dispersion, the body 8 only rises at a relatively low height. Furthermore, since the rigidity is enhanced inside the annular squeezing groove by the above-described planar squeezing portion 12, bending of the inner region of the annular squeezing groove hardly occurs in the first place.

  FIG. 6 shows an absorbent article 1A according to another embodiment of the present invention. Absorbent article 1A has the same configuration as absorbent article 1, but the shape of planar pressing portion 12A is a heart shape. Moreover, the additional pressing groove (additional pressing groove) of the comparatively small area is provided. For example, the additional pressing parts 13A and 13A are provided at positions closer to the center region M on both sides in the width direction of the planar pressing part 12A, and the additional pressing part 17A is provided outside the front width direction pressing groove 14A in the front-rear direction. , 17A are provided.

  By providing the additional pressing parts 13A and 13A, the rigidity of the inner region of the annular pressing groove can be increased, and the effect of giving the body 8 stiffness can be increased. When providing additional pressing parts 13A and 13A, additional pressing part 13A may have a high-pressure pressing part and a low-pressure pressing part, but if the area of a low pressing part is made larger than the area of a high-pressure pressing part, surface The flexibility and elasticity of the region extending on both sides of the shaped pressing portion 12A can be improved.

  Moreover, when the additional pressing parts 17A and 17A are provided, when the absorbent article 1 is mounted along the roundness of the body, the additional pressing parts 17A and 17A can be used as a starting point to form an oblique crease. Therefore, wearing that fits the body is possible.

  Furthermore, in the form of FIG. 6, the annular auxiliary squeezing is formed inside the annular squeezing groove formed by connecting the front and rear direction squeezing grooves 11 </ b> A and 11 </ b> A, the front width direction squeezing groove 14 </ b> A, and the rear width direction squeezing groove 15 </ b> A. A groove 16A is formed. The auxiliary squeezing groove 16A enhances the effect of raising the central portion of the main body 8A by the force from both legs (thighs), and obtains the effect of confining the body fluid in the body fluid discharge port corresponding region 20A and the vicinity thereof.

1, 1A Absorbent article 2 Back sheet 3 Top sheet 4 Absorber 5 Encapsulated sheet 7 Side nonwoven fabric 8, 8A Main body (absorbent article main body)
11, 11A Longitudinal squeezing groove 11a High pressure squeezing part 11b of the squeezing forward and backward grooving groove Low pressure squeezing part 12, 12A of the squeezing squeezing groove 13A additional pressing part 14, 14A front width direction pressing groove 15, 15A rear width direction pressing groove 16, 16A auxiliary pressing groove 17A additional pressing part 20, 20A body fluid discharge port corresponding area B body F front end area M central area R rear End area WG Wing CL Front-rear direction center line

Claims (4)

An absorbent article comprising a main body having a liquid-permeable surface sheet, a liquid-impermeable back sheet, and an absorber provided between the surface sheet and the back sheet,
The main body has an elongated shape having a predetermined length in the front-rear direction and a predetermined width in a direction orthogonal to the front-rear direction,
In the main body, a pressing groove that is recessed from the top sheet side to the back sheet side is formed,
The compression grooves are formed symmetrically about a center line extending in the front-rear direction of the main body as a symmetry axis, and have a width in front of the pair of front-rear direction compression grooves extending in the front-rear direction and the pair of front-rear direction compression grooves. A front width direction pressing groove extending in the direction, and a rear width direction pressing groove extending in the width direction behind the pair of front and rear direction pressing grooves,
The front width direction squeezing groove is connected to each front end of the pair of front and rear direction squeezing grooves, and the rear width direction squeezing groove is connected to each rear end of the pair of front and rear direction squeezing grooves, and is elongated in the front and rear direction. Forming the squeezing groove of
In the front and / or rear of the absorbent article, a planar compressed portion formed on the center line is formed inside the annular compressed groove,
The planar compressed part is formed in a central region obtained by dividing the maximum distance between the pair of longitudinal compressed grooves in the front-rear direction of the planar compressed part into three equal parts in the width direction, An absorbent article comprising a portion in which the total length in the width direction of the planar compressed portion is larger than the total length in the width direction of the front-rear direction compressed groove on a line orthogonal to the center line. The area of the said planar pressing part is an absorbent article of Claim 1 which is 25-100 mm < ² >. The planar squeezed part includes a high-pressure squeezed part and a low-pressure squeezed part formed at the periphery thereof, the depth of the depression being shallower than the high-pressure squeezed part,
The absorptive article according to claim 1 or 2 in which said high pressing part is formed on said center line. The front-rear direction squeezing groove includes a high-pressure squeezed portion and a low-pressure squeezed portion whose depth of the depression is shallower than the high-pressure squeezed portion,
On the line orthogonal to the center line, the sum of the lengths in the width direction of the high-pressure parts of the planar pressing parts includes a portion that is larger than the sum of the lengths in the width direction of the high-pressure parts of the front and rear direction pressing grooves. Item 4. An absorbent article according to Item 3.

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