JP2019000530A - Absorbent article and individually packed absorbent article - Google Patents

Abstract

To provide an absorbent article which stabilizes a folding position when folding the absorbent article and improves adhesion to a body.SOLUTION: An absorbent article is one whose body has compressed grooves, and the compressed grooves include: a pair of first compressed grooves which axisymmetrically extends in a back and forth direction with a center line extending in the back and forth direction of the body as an axis of symmetry; and a pair of second compressed grooves which is curved in a projection shape outside in a width direction and extend in the back and forth direction axisymmetrically with the center line as an axis of symmetry inside the pair of first compressed grooves. The pair of first compressed grooves has low-rigidity parts, respectively. The low-rigidity parts extend in the width direction and cross a virtual line passing through a position where a width between the pair of second compressed grooves becomes maximum.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an absorbent article and an individual absorbent article.

  Conventionally, as an absorbent article such as a panty liner, a sanitary napkin, or an incontinence pad, an absorbent article provided between a liquid-permeable top sheet and a liquid-impervious back sheet is known. And in recent years, the absorbent article in which the pressing groove was provided for the purpose of making the deformation | transformation of the main body of an absorbent article easy, suppressing the penetration | invasion of a bodily fluid, etc. is known well.

  For example, in Patent Document 1, the compressed groove 3 is provided so as to be symmetrical with respect to the center line in the longitudinal direction and surround the absorbent layer central portion 2, and a pair of left and right straddles the compressed groove 3 across the longitudinal center line. A configuration in which the intermittent portion 4 is formed is disclosed.

  Patent Document 2 discloses a configuration in which a pair of first central grooves 71B, a heart-shaped first design groove 72B, a front outer groove 731B, and a rear outer groove 732B are provided. In addition, one end side and the other end side of the rear outer groove 732B are arranged separately from the front end side of the pair of first central grooves 71B, respectively, and one end side and the other end side of the rear outer groove 732B are respectively paired with the first It is disclosed that the first central groove 71B is spaced apart from the front end side.

  Further, Patent Document 3 has constricted portions 5 a and 5 b that enter the circumferential inward in the plan view at the positions of the individual folding lines k 1 and k 2 in the circumferential leak-proof groove 5, and are inside the circumferential leak-proof groove 5. Each of the absorbent article having the arcuate central groove 4 extending in the width direction substantially parallel to the individual folding lines k1 and k2 and having the constricted portions 5a and 5b and the individual folding lines k1 and k2 in the region where the central groove 4 is located. A body is disclosed.

Japanese Patent No. 5258380 Japanese Patent No. 6021779 Japanese Patent No. 5380095

  However, the structure of the compressed groove disclosed in Patent Documents 1 and 2 does not take into consideration the ease of folding when the absorbent article is individually mounted, or the relationship between the crease and leakage generated by folding.

  Patent Document 3 describes the effect of stabilizing the folded shape when the absorbent article is an individual package, and suppressing the float and wrinkle of the surface material. Further, the absorbent article main body at the folding position is not sufficiently adhered to the body, and there is a possibility of leakage.

  In view of the above points, an object of the present invention is to provide an absorbent article that stabilizes the folding position when folding the absorbent article and has improved adhesion to the body.

  1st form of this invention is absorption provided with the main body which has a liquid-permeable surface sheet, a liquid-impermeable back surface sheet, and the absorber provided between the said surface sheet and the said back surface sheet. The main body has an elongated shape having a predetermined length in the front-rear direction and a predetermined width in the width direction orthogonal to the front-rear direction, and the main body is the back sheet from the top sheet side. And a pair of first pressing grooves extending in the front-rear direction, symmetrically about a center line extending in the front-rear direction of the main body, and the pair of first pressing grooves. A pair of second pressing grooves, which includes a pair of second pressing grooves extending in the front-rear direction and curved in a convex shape outwardly in the width direction, symmetrically about the center line as an axis of symmetry, Each groove has a weakly rigid portion, and the weakly rigid portion extends in the width direction. One width between the pair of second compressed groove extends over the virtual line passing through the position of maximum.

  In the first embodiment, each of the pair of first pressing grooves extending in the front-rear direction has a weakened portion (weakly rigid portion), so the absorbent article body starts from the weakly rigid portion. It is easy to bend in the front-rear direction. Therefore, when the absorbent article is folded along a fold line extending substantially in the width direction, the fold position can be stabilized when the fold line is made to correspond to the weakly rigid portion or the vicinity thereof.

  Moreover, in said 1st form, a pair of 2nd pressing groove which curves in the width direction outer side and extends in the front-back direction is provided inside a pair of 1st pressing groove, and the weakly rigid part of a 1st pressing groove is 1st. It straddles an imaginary line passing through a position where the width between the two compressed grooves is maximum. Therefore, even if a crease is strongly attached at the above folding position, the region between the inner pressing grooves (second pressing grooves) at the folding position can be raised widely. Thereby, a main body becomes easy to contact | adhere to a body and a leak can be prevented.

  In the second aspect of the present invention, the weakly rigid portion of the first pressing groove is a portion where the pair of first pressing grooves are intermittent.

  In the said 2nd form, the flexible part in which a pressing groove does not exist in a 1st pressing groove is formed by making the weakly rigid part of a 1st pressing groove into the part which the 1st pressing groove is intermittent. Therefore, when folding along the folding line extending substantially in the width direction, the folding position can be further stabilized when the folding line is made to correspond to the intermittent portion of the first pressing groove or the vicinity thereof.

  According to a third aspect of the present invention, the first pressing groove includes a high-pressure pressing portion and a low-pressure pressing portion whose depression is shallower than the high-pressure pressing portion, and the weakly rigid portion of the first pressing groove is the This is the part where the high-pressure part is intermittent.

  In the said 3rd form, the continuity of a 1st pressing groove is maintained by making the weakly rigid part of a 1st pressing groove into the part which the high pressing part intermittently. Therefore, when folding along the fold line extending in the substantially width direction, when the fold line is made to correspond to the intermittent portion of the high-pressure squeezing part or the vicinity thereof, the body fluid leaks to the side while stabilizing the fold position. Can be prevented.

  In the fourth embodiment of the present invention, the length in the front-rear direction of the weakly rigid portion is 2 to 10 mm.

  In the fourth embodiment, the length of the weakly rigid portion in the front-rear direction is set to a predetermined length, thereby suppressing the leakage of body fluid to the side while maintaining the effect of stabilizing the folding position by the weakly rigid portion. Can be prevented.

  In the fifth aspect of the present invention, the maximum width between the pair of second pressing grooves is 40 to 80% with respect to the width between the pair of first pressing grooves in the virtual line.

  In the fifth embodiment, since the maximum width between the second pressing grooves has a predetermined size with respect to the width between the first pressing grooves at the position, the region between the second pressing grooves is reliably raised. be able to.

  According to a sixth aspect of the present invention, the second pressing groove includes a high-pressure pressing portion and a low-pressure pressing portion whose depression is shallower than the high-pressure pressing portion, and the high-pressure pressing portion of the second pressing groove is the virtual portion. It is not on the line and the low-pressure portion straddles the virtual line.

  In the said 6th form, since the high pressing part of a 2nd pressing groove is not on a virtual line, the area | region of the periphery of a 2nd pressing groove becomes easy to fold. Therefore, the effect of stabilizing the folding position can be further improved. Moreover, since the low pressing part of a 2nd pressing groove is straddling the virtual line which passes along the position where the width | variety between 2nd pressing grooves becomes the maximum, the effect of raising the area | region between 2nd pressing grooves at the time of mounting | wearing is maintained. be able to.

  A seventh aspect of the present invention is an individual absorbent article including an absorbent article according to any one of the first to sixth aspects and a packaging sheet, wherein the absorbent article and the packaging sheet are The weakly rigid portion is folded in the front-rear direction.

  In the seventh embodiment, the shape after folding is stable, and after unpacking, an individual that can easily adhere to the body and can prevent leakage well, similar to the first embodiment. A absorbent article can be provided.

  According to one embodiment of the present invention, it is possible to provide an absorbent article that stabilizes the folding position when folding the absorbent article and has improved adhesion to the body.

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 an II line sectional view at the time of use of an absorptive article by one form of the present invention. It is an II-II line sectional view of an absorptive article by one form of the present invention. It is an II-II line sectional view at the time of use of an absorptive article by one form of the present invention. It is the elements on larger scale of the absorptive article by one form of the present invention. It is the elements on larger scale of the absorptive article by one form of the present invention. It is the elements on larger scale of the absorptive article by one form of the present invention. It is the elements on larger scale of the absorptive article by one form of the present invention. It is a figure which shows the individual | packing absorbent article obtained by folding the absorbent article by one form of this invention.

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

  In FIG. 1, the partially broken view of the absorbent article 1 by one form of this invention is shown. As shown in FIG. 1, the absorbent article 1 includes a main body having a liquid-impervious back sheet 2, a liquid-permeable front sheet 3, and an absorbent body 4 provided between the sheets 2 and 3. (Absorbent article main body) 8. 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 as a whole has an elongated shape having a predetermined length in the front-rear direction and 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. Moreover, when the absorbent article 1 is worn, the central region M including the region 40 corresponding to the body fluid discharge unit (the body fluid discharge unit corresponding region), the front end region F in front of the center region M, and the center region And a rear end region R located behind M. The center area | region M has the wing W extended from the both sides. The front end region F can be a region in front of the wing W starting position, and the rear end region R can be a region behind the wing W starting position. In the example shown in the figure, a configuration with a wing W is shown, but the absorbent article 1 may not have the wing W.

  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 W 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 3.5 to 7.5 mm. The absorbent body 4 does not have to have a uniform thickness over the front surface, and may have a structure in which the body fluid discharge port corresponding region 40 and the like are 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, when enhancing the effect of preventing menstrual blood or vaginal penetration or the feeling of touch, it is preferable to use a water repellent nonwoven fabric coated with a silicon-based, paraffin-based, alkylchromic chloride-based water repellent or the like. . Moreover, when improving the absorbability of the menstrual blood etc. in the wing W, it is preferable to use the nonwoven fabric which carried out the hydrophilic process as a material of a 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.

  Even if the outer edge of the wing W is provided with a pressing portion (emboss) having a dot shape or a predetermined shape at a predetermined position for the purpose of joining the side nonwoven fabric 7 and the back sheet 2 and increasing the rigidity. Good.

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

  The absorbent article 1 is provided with a plurality of compressed grooves (also referred to as compression grooves or embosses). This pressing groove is formed as a groove recessed from the top sheet 3 to the back sheet 2 side. By forming the squeezing groove, it is possible to facilitate deformation adapted to the shape of the body, or to control the transfer of body fluid on the surface or inside. The pressing groove can be formed by passing a laminate in which the top sheet 3 is laminated on the absorber 4 between a pair of pressure rolls. For example, the laminate can be passed so that a convex roll and a flat roll are arranged on the top sheet 3 side and the absorber 4 side, respectively.

  As shown in FIG. 1, the squeezing grooves include a pair of first squeezing grooves 10, 10 that extend in the anteroposterior direction with the center line CL extending in the anteroposterior direction of the main body 8 as the symmetry axis. The pair of first squeezing grooves 10 and 10 extend in the front-rear direction along the side of the body fluid discharge part corresponding region 40 or from the side of the body fluid discharge part corresponding region 40 to the side at a predetermined distance. . Although a pair of 1st pressing grooves 10 and 10 are mainly formed in the center area | region M, you may be formed in the range of the front-back direction exceeding the center area | region M like the example of FIG. By having the 1st pressing grooves 10 and 10, the side part of an absorptive article bends easily at the time of wearing, and mainly the area between the 1st pressing grooves 10 and 10 in central area M including body fluid discharge part correspondence field 40 Since it can swell, the fitting property to a bodily fluid discharge | release part can be improved at the time of mounting | wearing.

  In the example of FIG. 1, since the first pressing grooves 10 and 10 are concavely curved inward in the width direction, the absorbent article 1 can be naturally deformed along the roundness of both legs (both thighs) when worn. . However, the direction of bending of the first pressing grooves 10 and 10 is not limited to the illustrated example, and may be curved convexly outward in the width direction. Moreover, the 1st pressing groove | channels 10 and 10 may be formed linearly, without curving, In that case, the width | variety between the 1st pressing groove | channels 10 and 10 is the front. Or you may form so that it may spread gradually toward back.

  The pair of first squeezing grooves 10 and 10 have weakly rigid portions 30 and 30, respectively. In the example of FIG. 1, the front weak rigidity portions 31 and 31 and the rear weak rigidity portions 32 and 32 are formed as the weak rigidity portions 30 and 30, but are formed in the pair of first compressed grooves 10 and 10. The weakly rigid portions 30, 30 may be any of the front weakly rigid portions 31, 31 and the rear weakly rigid portions 32, 32.

  In the example of FIG. 1, the front weakly rigid portions 31, 31 are formed at the front end of the central region M or in the vicinity thereof, that is, at the position that is the starting point of the front of the wing W in the front-rear direction or the vicinity thereof. ing. The rear weakly rigid portions 32, 32 are formed at the rear end of the central region M or in the vicinity thereof, that is, at the position that is the starting point of the rear of the wing W as viewed in the front-rear direction or the vicinity thereof. However, the positions of the weakly rigid portions 30, 30 are not limited to the illustrated example. As will be described later, since the weakly rigid portions 30 and 30 are formed and can be easily bent at the position, it is determined in advance at which position the absorbent article 1 is to be folded. For this, it is preferable that the positions of the weakly rigid portions 30, 30 correspond to the folding positions.

  The weakly rigid portions 30, 30 are portions where the rigidity is weaker than the portions of the first compressed grooves 10, 10 formed in the front-rear direction. Therefore, the presence of the weakly rigid portions 30, 30 makes it easy to bend the absorbent article body 8 in the front-rear direction starting from the weakly rigid portions 30, 30. Thereby, when the absorbent article 1 is folded in the front-rear direction along a fold line extending substantially in the width direction, the folding position can be stabilized by folding the absorbent article 1 at the weakly rigid portions 30 and 30. Specifically, the fold line Y1 extending in the substantially width direction corresponds to the position where the front weak rigidity portions 31 and 31 are formed, and / or the fold line Y2 extending in the substantially width direction is set to the rear weak rigidity portion 32. , 32.

  Here, the “fold line” means a line that serves as a standard for the folding position when the absorbent article is folded in the front-rear direction. However, the crease attached to the absorbent article when the absorbent article is actually folded may coincide with the “fold line”, but does not coincide with the “fold line”. Ii).

  In the example of FIG. 1, the front weakly rigid portions 31 and 31 and the rear weakly rigid portions 32 and 32 (collectively referred to as weakly rigid portions 30 and 30) are portions where the pair of first compressed grooves 10 and 10 are intermittent. ing. That is, in the weakly rigid portions 30, 30, the main body 8 is not compressed. However, as described later, the weakly rigid portions 30 and 30 may have other configurations.

  The compressed groove formed in the absorbent article 1 further includes a pair of second compressed grooves 20 and 20. The pair of second squeezing grooves 20, 20 are curved symmetrically in the front-rear direction in a line-symmetrical manner with respect to the front-rear direction center line CL as an axis of symmetry inside the pair of first squeezing grooves 10, 10. It is a pressing groove that extends.

  The pair of second squeezing grooves 20, 20 may be formed in front and / or rear of the body fluid discharge part corresponding region 40. That is, the pair of second pressing grooves 20 and 20 may include at least one of the pair of front second pressing grooves 21 and 21 and the pair of rear second pressing grooves 22 and 22. The pair of front second squeezing grooves 21 and 21 straddle the boundary between the front region F and the central region M, and the pair of rear second squeezing grooves 22 and 22 include the central region M and the rear region R. It may be formed so as to straddle the boundary.

  The shapes of the pair of front second pressing grooves 21 and 21 and the pair of rear second pressing grooves 22 and 22 may be the same or different. Further, both sizes may be the same or different. In the illustrated example, both the pair of front second pressing grooves 21, 21 and the pair of rear second pressing grooves 22, 22 are formed, and the pair of rear second pressing grooves 22, 22 are: It is the shape (reverse heart shape) which reversed the shape (heart shape) of a pair of front 2nd pressing grooves 21 and 21 which have the same size in the front-back direction.

  As above-mentioned, when the 1st pressing groove 10 and 10 has the weak rigid parts 30 and 30, when the absorbent article 1 is folded in the position corresponding to this part, a fold is formed stably. can do. For this reason, the actual folding position may deviate from the folding target position in the folding process at the time of manufacture, and the shape of the absorbent article 1 after individual packaging (the individual absorbent article 100 described later) may not be stable. You can avoid that.

  However, since the 1st pressing grooves 10 and 10 have the weak rigid parts 30 and 30, after folding the absorbent article 1, a crease | fold (crease) may be attached strongly. Specifically, all or part of the weakly rigid portions 30 and 30 are strongly recessed by the folding process at the time of manufacture, and the depression is maintained even when the individual packaging is unwound to use the absorbent article 1. There is. In such a case, at the time of wearing, the crease and the area in the vicinity thereof are likely to be separated from the skin of the main body 8, and the fitting property is impaired. In some cases, there is a possibility that body fluid leaks along the crease.

  On the other hand, in this example, a pair of 2nd pressing grooves 20 and 20 are formed inside a pair of 1st pressing grooves 10 and 10, and the width between a pair of 2nd pressing grooves 20 and 20 is the maximum. This position corresponds to the positions of the weakly rigid portions 30 and 30 of the pair of first compressed grooves 10 and 10. That is, as illustrated in FIG. 1, for example, a line extending in the width direction orthogonal to the front-rear direction center line CL and passing through a position where the width between the pair of front second squeezing grooves 21 and 21 is maximized is virtually assumed. When it is set as the line X1, the pressing groove is arrange | positioned so that the front weak rigid parts 31 and 31 of the 1st pressing groove 10 and 10 may straddle the virtual line X1. In the example shown in the drawing, a line extending in the width direction orthogonal to the front-rear direction center line CL and passing through a position where the width between the pair of rear second squeezing grooves 22 and 22 is maximized is defined as an imaginary line X2. In this case, the rear weakly rigid portions 32, 32 of the first compressed grooves 10, 10 straddle the virtual line X2.

  When the pair of second squeezing grooves 20 and 20 are provided in the main body 8, the second squeezing grooves 20 and 20 are the starting points at the time of wearing, and the region between the second squeezing grooves 20 and 20 is defined by the wearer. Easier to raise on the skin side. And if the width | variety between the 2nd pressing grooves 20 and 20 is enlarged, the area | region of the rise can be enlarged. Furthermore, as shown in the drawing, the weakly rigid portions 30 and 30 are formed by making the position of the maximum width between the second compressed grooves 20 and 20 correspond to the weakly rigid portions 30 and 30 of the first compressed grooves 10 and 10. The body 8 can be raised with a large width in the skin direction and can be brought into close contact with the body at the position where it is easily folded (a position where a fold is easily generated when folded).

  Therefore, for example, even if the absorbent article 1 is folded at the fold line Y1 at a position corresponding to the front weakly rigid portions 31 and 31 of the pair of first squeezing grooves 10 and 10, adhesion to the body is caused. It is possible to improve the performance and prevent side leakage well. Further, the same effect can be obtained when the absorbent article 1 is folded along the fold line Y2 at a position corresponding to the rear weakly rigid portions 32, 32. Here, the folding lines Y1 and Y2 may be at the same positions as the virtual lines X1 and X2, respectively.

  2A and 2B schematically show II cross-sectional views of FIG. As shown in FIG. 1, the line I-I extends in the width direction orthogonal to the front-rear direction center line CL and passes through the front weakly rigid portions 31, 31. FIG. 2A shows a state before the absorbent article 1 is attached, and FIG. 2B shows a state at the time of attachment.

  As shown to FIG. 2A, in the state before mounting | wearing, the absorbent article 1 is flat as a whole. On the other hand, at the time of wearing, the side part of the body fluid discharge part corresponding region 40 (FIG. 1) is deformed by receiving the force from both sides of the wearer's legs from both sides. It is pulled to. Then, as shown in FIG. 2B, the pulled portions (both side portions) are likely to rise to the skin surface side. When both side portions rise, normally, the area near the center line CL in the front-rear direction tends to be separated from the skin surface. However, since the second pressing grooves 20 and 20 are provided, the second pressing grooves 20 and 20 become a starting point, and the area near the center line CL in the front-rear direction (the area between the second pressing grooves 20 and 20) is skinned. Can be raised in the direction.

  Since the I-I line is very close to the virtual line X1 (very close to the position where the width between the second compressed grooves 20, 20 is maximum), the width between the second compressed grooves 20, 20 is relatively large. Thereby, as shown to FIG. 2B, between the 2nd pressing grooves 20 and 20 can be raised with a big width | variety at the time of mounting | wearing, and the adhesiveness to the body of a main body can be improved.

  3A and 3B schematically show II-II sectional views of FIG. The II-II line is located behind the II line, extends in the width direction perpendicular to the front-rear direction center line CL, and does not pass through the front weakly rigid portions 31, 31. At the position of the II-II line, the width between the second pressing grooves 20, 20 is smaller than the width between the second pressing grooves 21, 21 at the position of the II line. FIG. 3A shows a state before the absorbent article 1 is attached, and FIG. 3B shows a state at the time of attachment.

  At the time of mounting, as in the state shown in FIG. 2B, both side portions of the main body are pulled backward at the position of the line II-II, and the pulled portions (both side portions) rise as shown in FIG. 3B. Since the width between the second pressing grooves 20 and 20 at the position of the II-II line is smaller than the width between the second pressing grooves 20 and 20 at the position of the II line, at the position of the II-II line, The rise of the body is small.

  Thus, in one form of the present invention, as shown in FIG. 2B, the positions where the large bulges between the second compressed grooves 20, 20 are formed at the weakly rigid portions 30, 30 of the first compressed grooves 10, 10. By making it correspond to this position, even when the absorbent article 1 is folded at the weakly rigid portions 30, 30, the main body 8 can be satisfactorily adhered to the body.

  FIG. 4 shows an enlarged view of a part of the front region R and the central region M of FIG. 4, a indicates the width between the pair of first squeezing grooves 10 and 10 on the imaginary line X1, and b indicates the pair of second squeezing grooves 21 and 21 on the imaginary line X1 in the same manner. The width | variety between 2nd pressing grooves 20 and 20) is pointed out. That is, b is the maximum width between the pair of front second pressing grooves 21 and 21 (the pair of second pressing grooves 20 and 20).

  Here, the ratio ((b / a) × 100) of the maximum width b between the pair of second pressing grooves 20 and 20 to the width a between the pair of first pressing grooves 10 and 10 in the virtual line X1 is 40. It is preferably -80%, more preferably 50-70%. By setting the ratio of b to a to be 40% or more, the rising area between the second compressed grooves 20 and 20 can be sufficiently increased, so that the effect of preventing leakage is improved. Moreover, by making the said ratio 80% or less, the effect of the swell from the 2nd pressing grooves 20 and 20 can be maintained, and the 2nd pressing grooves 20 and 20 are the 1st pressing grooves 10 and 10. It is possible to prevent the flexibility of the main body 8 from being lowered excessively.

  In FIG. 4, c indicates the length in the front-rear direction of the front weakly rigid portions 31, 31 (weakly rigid portions 30, 30). This length c is preferably 1 to 10 mm, and more preferably 2 to 5 mm. By setting the length c of the weakly rigid portions 30 and 30 to 1 mm or more, the ease of folding at the positions of the weakly rigid portions 30 and 30 can be improved. Further, by setting the length c to 10 mm or less, it is possible to prevent body fluid from leaking from the first compressed grooves 10 and 10 to the outside in the width direction, and to give the wearer a sense of security that leakage can be prevented visually. Can do.

  In the example of FIG. 1, the pressing groove further includes a front width direction pressing groove 15 and a rear width direction pressing groove 16. The front width direction squeezing groove 15 is provided in the front region F, and has a curved shape that is convex forward. Moreover, the back width direction pressing groove 16 is provided in the back area | region R, and has the convex curved shape back.

  In the illustrated example, the front width direction pressing groove 15 and the rear width direction pressing groove 16 are connected to the front end and the rear end of the pair of first pressing grooves 10, 10, respectively, and include weakly rigid portions 30, 30. A substantially annular squeezing groove is formed. With such a configuration, leakage of body fluid to the outside of the annular squeezing groove can be more reliably prevented. In the absorbent article 1, one of the front width direction pressing groove 15 and the rear width direction pressing groove 16 may be provided, or the front width direction pressing groove 15 and the rear width direction pressing groove 16 may not be provided.

  The position of the connection part of the front width direction pressing groove 15 and a pair of 1st pressing grooves 10 and 10, or the boundary of both is not specifically limited. The position of the connection part of the back width direction pressing groove 16 and a pair of 1st pressing grooves 10, 10 or the boundary of both is also the same.

  In this example, the squeezing groove may have a high-pressure squeezing part and a low-pressure squeezing part that is shallower than the high-pressure squeezing part. In FIG. 1, the high pressing portion is displayed in black, and the low pressing portion is displayed in white. The high pressing portion may be a portion in which the groove depth is relatively deeply formed by about 0.5 mm to 3 mm from the bottom surface of the low pressing portion. The structure of the pressing groove containing such a high pressing part and a low pressing part can be obtained by using the pressure roll which has the unevenness | corrugation corresponding to a desired structure. For example, it is possible to use a pressure roll provided with a convex portion corresponding to the shape of the entire compressed groove and further provided with a fine convex portion corresponding to the high-pressure portion on the convex portion. In addition, a low-pressure squeezed part is first formed at a relatively low pressure in a region where the squeezing groove is to be constructed, and then a high-pressure squeezed part is formed at a relatively high pressure in a part of the formed low-squeezed part region Can be obtained. Adjustment of the depth of a pressing part can be performed by adjusting the printing pressure of the above-mentioned press roll used for formation of a pressing groove.

  As shown in FIG. 1, each of the first pressing grooves 10 and 10, the second pressing grooves 20 and 20, the front width direction pressing groove 15, and the rear width direction pressing groove 16 includes a high pressure portion and a low pressure portion. You may have the structure provided. In FIG. 4, the high-pressure squeezed portion of the first squeezing grooves 10 and 10 is indicated by reference numeral 18, the low-pressure squeezed portion is indicated by reference numeral 19, and the high-pressure squeezed portions of the second pressing grooves 20 and 20 are indicated by reference numeral 28 and low. The pressing part is indicated by reference numeral 29.

  As shown in FIG. 4, the high pressing part 28 of the 2nd pressing groove 20 does not exist on the virtual line X1 which extends in the width direction and passes through the position where the width between the 2nd pressing grooves 20 and 20 becomes the maximum. Moreover, the low pressing part 29 of the 2nd pressing groove 20 is comprised so that virtual line X1 may be straddled. Thereby, the range in the front-rear direction of the weakly rigid portion 30 of the first compressed groove 10 and the range in which the high-pressed portion 28 of the second compressed groove 20 does not exist can be made to overlap, specifically in the front-rear direction. . Thereby, it becomes easy to bend the main body 8 in the front-back direction also in the position of the 2nd pressing grooves 20 and 20. FIG. Therefore, for example, when the absorbent article 1 is folded at the fold line Y1 passing through the front weakly rigid portions 31, 31, the absorbent article 1 becomes easier to fold, and the folding position is further stabilized in the folding process during manufacturing. In addition, the above-described effect of raising the region between the pair of second pressing grooves 20 and 20 can be maintained.

  In the example of FIGS. 1 and 4, the pair of second squeezing grooves 20, 20 are connected to each other at the front and rear thereof, thereby forming a heart-shaped annular squeezing groove. Since the pair of second squeezing grooves 20, 20 are connected to each other, the rigidity in the front-rear direction center line CL and the vicinity thereof can be improved, so that a lot of bodily fluid is absorbed and the main body 8 is set loose. Even if it occurs, it can prevent twisting.

  In addition, as shown in FIG. 4, when the pair of front second squeezing grooves 21, 21 are connected to each other at the rear to form a substantially V-shaped portion 25, the tip of the V-shaped at the time of mounting As a starting point, the main body 8 is easily bent in the front-rear direction and the width direction, and easily deforms along the roundness of the body.

  As described above, the pair of front second squeezing grooves 21, 21 has the maximum width (the position of the imaginary line X <b> 1) at the front weakly rigid portions 31, 31 of the pair of first squeezing grooves 10, 10. It is arranged to correspond to. Therefore, the front-end | tip of the V-shaped part 25 of the front 2nd pressing grooves 21 and 21 will be located back rather than the virtual line X1. Thereby, when the absorbent article 1 is folded in the front-rear direction at the position where the front weakly rigid parts 31, 31 are formed, the front end of the V-shaped part 25 of the second squeezing groove 21 ahead of the folding position. Will be located. Then, even when the crease is strongly attached at the folding position, the natural deformation action by the V-shaped tip is not affected by the crease.

  1 and 4, when the front of the pair of second pressing grooves 21 and 21 is curved forward and connected at the position of the front-rear direction center line CL, The connecting portion can also be a starting point for natural curvature along the roundness of the body.

  FIG. 5 shows a partially enlarged view of an absorbent article 500 according to another example of the present invention. The structure of the absorbent article 500 is the same as that of the absorbent article 1, the absorbent article main body 508 has a pair of first compressed grooves 510 and 510, and a pair of front second compressed grooves 521 and 521 (a pair of inner grooves) The second pressing grooves 520 and 520) are provided. Moreover, in FIG. 5, the high pressing part of the 1st pressing grooves 510 and 510 is shown with the reference number 518, and the low pressing part is shown with the reference number 519.

  The absorbent article 500 is different from the configuration of the absorbent article 1 in that the weakly rigid portions 530 and 530 of the pair of first compressed grooves 510 and 510 are formed as portions where the high-pressure compressed portions 518 are intermittent. . In the example of FIG. 5, the weakly rigid portions 530 and 530 are portions where the low-pressure portions 519 of the first pressing groove 10 are continuous.

  In this example, since the weakly rigid portions 530 and 530 are not formed by the intermittent use of the first compressed grooves 510 and 510 itself, but are formed by the intermittent use of the high-pressure compressed portion 518, the absorbent article 500 can be easily folded. It is possible to prevent side leakage while maintaining this effect.

  In the 1st pressing groove 510, the some high pressing part 518 is formed at intervals, and the area | regions other than the high pressing part 518 are the low pressing parts 519. In the illustrated example, each high-pressure squeezed portion 518 is formed so as to be in contact with either one of both edges of the first squeezing groove 510, and the high-pressure squeezed portion that is in contact with the left edge of the first squeezing groove 510 The high pressure parts that are in contact with the right edge of the groove 510 are alternately arranged in a staggered pattern. However, the arrangement of the high pressing parts 518 is not limited to that shown in the drawing, and each high pressing part 518 is formed so as to contact both edges of the first pressing groove 510 and is arranged at a predetermined interval. Good.

  The space between the high pressure parts 518 arranged in the first compression groove 510 (the distance in the front-rear direction between one high pressure part and the high pressure part adjacent thereto, and the ends of the high pressure parts facing each other. The distance between the parts is not particularly limited, but is preferably about 1.0 to 4.0 mm. Moreover, it is preferable that the arithmetic average of the space | interval of the high pressing parts 511 arrange | positioned at the 1st pressing groove 510 is about 1.0-4.0 mm.

  The length c in the front-rear direction of the weakly rigid portion 530 is preferably larger than the arithmetic average of the intervals between the high pressure portions 511 disposed in the first compressed grooves 510 in places other than the weakly rigid portion 530. It is preferable that it is larger than the maximum value of the interval between the pressing parts 511. In addition, the length c in the front-rear direction of the weakly rigid portion 530 is preferably 1 to 10 mm, and more preferably 2 to 5 mm.

  FIG. 6 shows a partially enlarged view of an absorbent article 600 according to another example of the present invention. The structure of the absorbent article 600 is the same as that of the absorbent article 1, the absorbent article main body 608 has a pair of first compressed grooves 610, 610 and a pair of front second compressed grooves 621, 621 (a pair of The second pressing grooves 620 and 620) are provided.

  The absorbent article 600 differs from the absorbent article 1 in that the pair of second pressing grooves 620 and 620 are not connected to each other. Since the pair of second pressing grooves 620 and 620 are not connected to each other, the rigidity of the region of the main body 608 in the vicinity of the center line CL in the front-rear direction is weakened, and thus the region between the pair of second pressing grooves 620 and 620 and The vicinity area rises in a relatively large range. It is also preferable from the viewpoint of touch.

  In the illustrated example, the pair of second pressing grooves 620 and 620 are not connected to each other in both the front and rear, but the pair of second pressing grooves 620 and 620 are connected to each other in the front and rear. Also good.

  FIG. 7 shows a partially enlarged view of an absorbent article 700 according to another example of the present invention. The structure of the absorbent article 700 is the same as that of the absorbent article 1, the absorbent article main body 708 has a pair of first compressed grooves 710 and 710, and a pair of front second compressed grooves 721 and 721 (a pair of the first compressed grooves 721 and 721) 2nd squeezing grooves 720, 720) are provided. However, the absorbent article 700 differs from the absorbent article 1 in that the pair of second pressing grooves 720 and 720 are not connected to each other and are shorter.

  In the example of FIG. 7, as in the example of FIG. 6, the rigidity of the region in the vicinity of the center line CL in the front-rear direction is weakened. It can be raised and is also preferable from the viewpoint of touch.

  The length in the front-rear direction of the pair of second compressed grooves 720, 720 is the length in the front-rear direction of the pair of front weakly rigid portions 731 and 731 (weakly rigid portions 730, 730) of the pair of first compressed grooves 710, 710. Longer than the length is preferred. Accordingly, even when the main body is folded at a position corresponding to the weakly rigid portions 730 and 730 (for example, at the folding line Y1), the main body 708 at the folding position is raised while the folding position is stabilized, and leakage occurs. Can be prevented.

  FIG. 8 shows an individual absorbent article 100 obtained by folding the absorbent article 1. The individual absorbent article 100 includes the absorbent article 1 and the packaging sheet 9, and the absorbent article 1 is folded together with the packaging sheet 9 in the front-rear direction at a folding position extending in a substantially width direction. A tape 9 a is provided at the front end of the packaging sheet 9, whereby the front end of the packaging sheet 9 can be fixed to the individual absorbent article 100 after the absorbent article 1 is folded. .

  In the illustrated example, the side end of the packaging sheet 9 of the individual absorbent article 100 is open, but the side end of the packaging sheet can be joined by pressing or the like. Thereby, the absorbent article 1 whole can be packaged so that the absorbent article 1 cannot be touched from the outside.

  The individual absorbent article 100 is tri-folded, that is, folded in the front-rear direction along two fold lines extending in the substantially width direction. In this case, after the absorbent article 1 is folded at the rear fold line, the absorbent article 1 can be folded at the front fold line.

  The individual absorbent article 100 may be folded in four or five. Even in that case, the above-described effect of stabilizing the folding position can be obtained by setting at least one folding position to a position corresponding to the weakly rigid portion.

  In FIG. 8, the state before the front of the absorbent article 1 is folded is shown by a dotted line. In the illustrated example, the absorbent article 1 is shown to be folded in the direction of the arrow at a fold line Y1 passing through the front weakly rigid portions 31, 31 provided in the pair of first compressed grooves 10, 10, respectively. Yes. As shown in the figure, if the absorbent article 1 can be folded at a position that avoids the highly rigid portions of the first compressed grooves 10, 10, the folding position can be stabilized during production, and the folded individual packaging absorption The shape of the adhesive article 100 can also be stabilized.

DESCRIPTION OF SYMBOLS 1 Absorbent article 2 Back sheet 3 Top sheet 4 Absorber 5 Encapsulating sheet 7 Side nonwoven fabric 8,508,608,708 Main body (absorbent article main body)
9 Packaging sheet 9a Tape 10, 510, 610, 710 1st pressing groove (outer front-rear direction pressing groove)
15, 515, 615, 715 Front width direction compressed groove 16 Rear width direction compressed groove 18, 518 High pressure portion 19, 519 of first compressed groove Low pressure portion 20, 520, 620, 720 of first compressed groove Groove (inner longitudinal squeezing groove)
21, 521, 621, 721 Front second squeezing groove 22 Rear second squeezing groove 25 V-shaped portion 28 High pressure squeezing part 29 of second squeezing groove Low pressure squeezing part 30, 530, 630, 730 of second squeezing groove Weak rigid portion 31, 531, 631, 731 of the first compressed groove Front weak rigid portion 32 Rear weak rigid portion 40 Body fluid discharge portion corresponding region 100 Individual absorbent article CL Front-rear direction center line F Front region M Central region R Rear region W wing X1, X2 imaginary line Y1, Y2 folding line

Claims (7)

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 the width direction orthogonal to the front-rear direction,
The main body has a pressing groove that is recessed from the top sheet side to the back sheet side,
The compressed groove is
A pair of first squeezing grooves extending in the front-rear direction in line symmetry with a center line extending in the front-rear direction of the main body as a symmetry axis;
Inside the pair of first pressing grooves, a pair of second pressing grooves extending in the front-rear direction and curved in a convex shape outwardly in the width direction in a line symmetry with the center line as a symmetry axis,
Each of the pair of first compressed grooves has a weakly rigid portion, and the weakly rigid portion extends across an imaginary line that extends in the width direction and passes through a position where the width between the pair of second compressed grooves is maximized. Absorbent articles.   The absorbent article according to claim 1, wherein the weakly rigid portion of the first compressed groove is a portion where the pair of first compressed grooves are intermittent. The first squeezing groove includes a high-pressure squeezed part and a low-pressure squeezed part whose depression is shallower than the high-pressure squeezed part.
The absorptive article according to claim 1 in which said weakly rigid part of said 1st pressing slot is a part in which said high pressing part is intermittent.   The absorbent article according to claim 1, wherein a length of the weakly rigid portion in the front-rear direction is 2 to 10 mm.   5. The maximum width between the pair of second pressing grooves is 40% to 80% with respect to the width between the pair of first pressing grooves in the phantom line. Absorbent article. The second squeezing groove includes a high-pressure squeezed part and a low-pressure squeezed part whose depression is shallower than the high-pressure squeezed part.
The absorptive article according to any one of claims 1 to 5 in which said high pressing part of said 2nd pressing groove does not exist on said virtual line, and said low pressure pressing part straddles said virtual line. An individual absorbent article comprising the absorbent article according to any one of claims 1 to 6 and a packaging sheet,
The individual absorbent article, wherein the absorbent article and the packaging sheet are folded in the front-rear direction at the weakly rigid portion.

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