JP2017148282A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent twist corresponding to leg pressure from multi directions and achieve excellent wearing property.SOLUTION: There is provided a sanitary napkin 1 comprising a main body part in which an absorber 4 is interposed between a surface sheet 3 and a rear surface sheet 2, and on a skin contact face side of the main body part, compression grooves 10 which become dent toward a non-skin contact face side, are formed. The compression grooves 10 are provided on both side parts of a region corresponding to a body fluid discharge portion H and continuous along a longitudinal direction of the sanitary napkin 1, and plural non-compression parts 11 whose peripheries are surrounded by the compression grooves 10 are arranged and formed along the longitudinal direction of the napkin. On the other hand, on the region corresponding to at least the body fluid discharge portion H, the compression groove 10 is not formed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads, disposable diapers for absorbing menstrual blood, urine, urine, etc., and more specifically, compressed grooves on both sides on the skin contact surface side The present invention relates to an absorbent article in which is formed.

  Conventionally, as the absorbent article, an absorbent body is interposed between a liquid-impermeable back sheet such as a polyethylene sheet or a polyethylene sheet-laminated nonwoven fabric and a liquid-permeable surface sheet such as a nonwoven fabric or a liquid-permeable plastic sheet. It has been known.

  Many improvements have been made to this type of absorbent article, and compressed grooves are formed in various patterns on the skin contact surface for the purpose of fitting the body and preventing it from twisting when worn. Many have been proposed. However, for example, when panty liners or sanitary napkins are worn before menstruation to prevent menstrual blood from adhering to shorts, or when napkins are not worn and replaced when there is little blood drainage at the end of menstruation If the sanitary napkin or panty liner is worn for a long time, the absorbent article may distort due to body movements, especially leg movements. There was a problem that the part led to a sense of incongruity.

  For the purpose of preventing such twisting at the time of wearing, in Patent Document 1 below, the inner sheet positioned on the body side is directed to the outer sheet positioned on the opposite side of the body side, and the vertical direction and the horizontal direction. Are formed so that a plurality of squeezed grooves extending to cross each other and forming a lattice pattern are formed.

  Moreover, in the following patent document 2, in the site | part which a surface sheet and an absorber overlap, the area | region enclosed by the vertically long annular pressing groove formed by pressing a surface sheet and an absorber in the thickness direction, and an annular pressing groove What is provided with the low pressing area which has the low pressing recessed part which is located in the longitudinal direction both ends inside and which formed it by pressing a surface sheet and an absorber in the thickness direction is disclosed.

  Furthermore, in the following patent document 3, it has a pair of pressing groove which extended in the length direction on the upper surface both sides of the area | region in which an absorptive core is located, and the space | interval became narrow in the center part, The said pressing groove is The sanitary napkin which has the high pressing part and the low pressing part which are alternately arranged in parallel in the length direction of the bottom face is disclosed.

JP 2011-200337 A JP 2014-97132 A JP-A-9-108262

  In the above Patent Document 1, since the inner and outer surface sheets are joined by the welded portion at the portion where the compressed groove is formed, the movement of the core material is hindered, and the core material is the outer surface sheet when the panty liner is worn. However, since the compressed groove is formed in almost the entire area of the inner surface sheet, the skin contact surface of the entire product is hardened, and in particular, body fluid discharge When the compressed groove contacts the part, there is a possibility that it may lead to an uncomfortable feeling at the time of wearing.

  Moreover, in the said patent document 2, while providing the said annular pressing groove and a low pressing recessed part, while mounting | wearing, while raising a center part to a user side and reducing a leak, it is inside from a user's both legs at the time of mounting | wearing. As a result of suppressing wrinkles parallel to the vertical direction when lateral force is applied toward the product and preventing irregular deformation of the product, it is possible to improve the feeling of use and prevent leakage, etc. The effect of is described. However, there is a possibility that it cannot sufficiently cope with wrinkles entering in any direction due to body movement.

  Furthermore, in the said patent document 3, although it describes that providing the said pressing groove improves the fitting adhesiveness to the female local part of a napkin, it deform | transforms into a fixed form along the said pressing groove. However, when complicated leg pressure is applied from multiple directions during wearing, there is a possibility that it cannot be adequately handled.

  Then, the main subject of this invention is providing the absorbent article excellent in the feeling of wearing while being able to prevent twist corresponding to the leg pressure from many directions.

In order to solve the above-mentioned problem, as the present invention according to claim 1, a concave portion is formed on the skin contact surface side of the main body portion where the absorber is interposed between the top sheet and the back sheet toward the non-skin contact surface side. In the absorbent article in which the compressed groove is formed,
The compressed groove is formed continuously along the longitudinal direction of the absorbent article on both sides of the region corresponding to the body fluid discharge site, and the non-compressed part surrounded by the compressed groove is the absorbent article. An absorbent article is provided that is formed in a pattern that is arranged in a plurality along the longitudinal direction, and is not formed at least in a region corresponding to a body fluid discharge site.

  In the invention of the first aspect, the pressing groove is continuously formed along the longitudinal direction of the absorbent article on both sides of the region corresponding to the body fluid discharge site, and the periphery is surrounded by the pressing groove. Since the non-compressed portion formed is formed in a pattern that is arranged in a plurality along the longitudinal direction of the absorbent article, when the leg pressure directed inward from the both sides in the width direction is applied at the time of wearing, the periphery is surrounded by the compressed groove. The presence of a plurality of non-compressed parts can counteract leg pressure not only in one direction but also in multiple directions, and can surely prevent the absorbent article from twisting and conform to the pattern of compressed grooves. You can also prevent twists.

  In addition, the compressed groove is formed on both sides of the region corresponding to the body fluid discharge site, and not formed in the region corresponding to the body fluid discharge site. A sense of incongruity due to contact does not occur, and a feeling of wearing becomes excellent.

  As the present invention according to claim 2, the absorbent article according to claim 1, wherein the planar shape of the non-compressed portion is any one of a circle, a rhombus, a triangle, a quadrangle, and a heart shape, or two or more selected from these. Is provided.

  In the second aspect of the present invention, as the planar shape of the non-compressed portion, a circle, a diamond, a triangle, a quadrangle, and a heart shape are exemplified. In addition to this, any plane shape can be adopted as long as the periphery is a pattern surrounded by compressed grooves. In particular, when the non-compressed portion is circular, there is no directionality of resistance to leg pressure, and the corners and the suddenly changing portion of the curvature are not formed on the outline of the non-compressed portion, so that the occurrence of twisting is ensured. This is a desirable form because it can be suppressed. The non-squeezed part may be composed of any one of the above-described planar shapes, or may be composed of two or more selected from these.

  As a third aspect of the present invention, the size of the non-compressed portion is formed so as to be small at the central portion in the longitudinal direction and gradually increase toward both ends in the longitudinal direction, or large at the central portion in the longitudinal direction. The absorbent article according to any one of claims 1 and 2, wherein the absorbent article is formed so as to gradually become smaller toward both ends in the direction.

  In the invention of claim 3, the non-compressed portion is not formed with a constant size, but is a pattern that is small at the central portion in the longitudinal direction and gradually increased toward both ends in the longitudinal direction, or at the central portion in the longitudinal direction. One of the patterns is large and gradually smaller toward both ends in the longitudinal direction. In the former case, the uncomfortable feeling at the crotch can be reduced, and in the latter case, the resistance to leg pressure at the crotch can be increased.

  As this invention which concerns on Claim 4, the 2nd pressing groove is formed in the area | region which does not overlap with the area | region where the said pressing groove is formed, The absorbent article in any one of Claims 1-3 is provided. .

  In the invention according to the fourth aspect, the second squeezing groove is formed in a region that does not overlap with the region where the squeezing groove is formed, thereby reinforcing the portion where the twist due to the leg pressure is likely to occur. The second squeezing groove may be formed in a pattern in which a plurality of non-squeezed parts surrounded by the above-described squeezing groove are arranged, or may be formed in a simple linear shape.

  As described above in detail, according to the present invention, it is possible to provide an absorbent article that can prevent twisting in response to leg pressure from multiple directions and that has an excellent wearing feeling.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. It is the II-II arrow directional view of FIG. 2 is an enlarged plan view of a compressed groove 10. FIG. It is a top view of the sanitary napkin 1 which shows the leg pressure which acts at the time of mounting | wearing. It is a top view which shows the twist at the time of mounting | wearing with the conventional sanitary napkin. It is a top view of the sanitary napkin 1 which shows the modification (the 1) of the pressing groove. It is a top view of the sanitary napkin 1 which shows the modification (the 2) of the pressing groove. It is a top view of the sanitary napkin 1 which shows the modification (the 3) of the pressing groove. It is a top view of the sanitary napkin 1 which shows the arrangement | positioning area | region of the 2nd pressing groove.

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

[Basic structure of sanitary napkin 1]
As shown in FIGS. 1 and 2, the sanitary napkin 1 according to the present invention has a liquid-impervious back sheet 2 made of a polyethylene sheet and the like, and a liquid-permeable surface that allows permeation of blood or vaginal discharge quickly. A sheet 3, an absorbent body 4 mainly composed of cotton-like pulp or synthetic pulp and a highly water-absorbing resin interposed between the two sheets 2, 3, and, if necessary, maintaining the shape of the absorbent body 4 In order to improve diffusibility, it is mainly composed of an encapsulating sheet 5 surrounding the absorber 4. Moreover, a hydrophilic second sheet can be arrange | positioned between the said liquid-permeable surface sheet 3 and the absorber 4 as needed.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impermeable back sheet 2, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or A nonwoven fabric sheet (in this case, the waterproof film and the nonwoven fabric constitute a liquid-impervious back sheet) can be used after substantially impervious to liquid imperviousness by interposing a waterproof film. In recent years, those having moisture permeability tend to be used from the viewpoint of preventing stuffiness. This water- and moisture-permeable sheet material is a microporous sheet obtained by forming a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretching in a uniaxial or biaxial direction. It is.

  Next, as the liquid-permeable surface sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. As the material fibers constituting the nonwoven fabric, for example, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, natural fibers such as cotton, and air through Nonwoven fabric obtained by an appropriate processing method such as a method, an airlaid method, a spunlace method, a spunbond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of bulkiness and high compression recovery.

  The absorbent body 4 interposed between the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 is made of, for example, fluffy pulp and a water-absorbing polymer. In the illustrated example, the planar shape is a substantially oblong shape that is long in the longitudinal direction of the napkin.

Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as dissolved pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price. Basis weight of the ^{pulp, 100g / m 2 ~600g / m} 2, and it is preferably a ^{100g / m 2 ~300g / m 2} .

  The water-absorbing polymer is mixed in the pulp constituting the absorber, for example, as granular powder. Examples of the superabsorbent polymer include a cross-linked polyacrylate, a self-crosslinked polyacrylate, a saponified acrylate-vinyl acetate copolymer cross-linked product, a cross-linked isobutylene / maleic anhydride copolymer, Examples include cross-linked polysulfonates, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. In the production process of the highly water-absorbent resin having the water-absorbing performance, it is possible to adjust the absorption ratio (water absorption power) and the absorption speed by adjusting the cross-linking density and the cross-linking density gradient.

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

  The width dimension of the absorbent body 4 may be substantially equal over the entire length, and corresponds to the crotch portion including the bodily fluid discharge site H so as not to give the wearer a feeling of sticking by hitting the crotch portion. A portion cut out in an arc shape may be provided in a predetermined section in the longitudinal direction.

  When providing the encapsulating sheet 5 surrounding the absorbent body 4 as in this example, as a result, the encapsulating sheet 5 is interposed between the liquid-permeable surface sheet 3 and the absorbent body 4, A body fluid is quickly diffused by the encapsulating sheet 5 having excellent absorbability, and reversal of menstrual blood and the like is prevented. As the encapsulating sheet 5, crepe paper or hydrophilic nonwoven fabric can be used.

[Pressed groove 10]
The sanitary napkin 1 has a skin contact surface side (liquid permeable side) in a predetermined region of the main body portion where the absorbent body 4 is interposed between the liquid permeable top sheet 3 and the liquid permeable back sheet 2. The pressing grooves 10 that are depressed toward the non-skin contact surface side (impermeable liquid back sheet 2 side) by pressing from the outer surface side of the top sheet 3 are provided in a predetermined pattern.

  The compressed groove 10 is continuously formed along the longitudinal direction of the sanitary napkin 1 on both sides of the body fluid discharge site, and the non-pressed portion 11 surrounded by the compressed groove 10 is a sanitary napkin. A plurality of patterns are arranged along the longitudinal direction of 1.

  The said compression groove | channel 10 is formed by compressing integrally from the liquid-permeable surface sheet 3 to the absorber 4 by pressing from the outer surface side of the liquid-permeable surface sheet 3, as FIG. 2 shows. is there. As shown in FIG. 1, the compressed groove 10 is formed on the outer side in the width direction with respect to the width direction of the sanitary napkin 1 than the region corresponding to the body fluid discharge site H of the wearer, and the sanitary napkin 1. In the illustrated example, the absorbent body 4 is formed over substantially the entire length from the front side to the rear side including the body fluid discharge site H of the wearer. The said pressing groove 10 is continuously formed in each of the width direction both sides, without dividing in the middle.

  As shown in FIG. 3, the compressed groove 10 directly connects the compressed groove 10 surrounding the periphery of the non-pressed portion 11 and the compressed groove 10 surrounding the periphery of the non-pressed portion 11 adjacent thereto. It arrange | positions like this and is formed with the pattern in which another pressing groove which connects these pressing grooves 10 and 10 does not interpose. That is, it arrange | positions so that a part of pressing groove 10 and 10 which each surrounds the adjacent non-pressing parts 11 and 11 may be common. If the compressed grooves 10 and 10 surrounding the adjacent non-compressed portions 11 and 11 are connected by another compressed groove such as a linear shape, the resistance to leg pressure is reduced at the connected compressed groove portions. However, it is not preferable because a twist with this portion as a base point is likely to occur.

  In the skin contact surface of the sanitary napkin 1, the non-compressed portion 11 is surrounded by the compressed groove 10 to form an island shape in which the periphery is recessed. The non-compressed portion 11 is surrounded by a compressed groove 10 that is compacted and highly rigid by squeezing from the outer surface side of the liquid-permeable surface sheet 3, whereby the entire non-compressed portion 11 is strengthened and resistance to external force. Power is increasing.

  The non-compressed portion 11 may be arranged so as to be aligned in a straight line with respect to the longitudinal direction of the sanitary napkin 1 (FIG. 1 and FIGS. 6A to 6D, etc.), and with respect to the width direction. It may be arranged in a zigzag shape that is alternately displaced (Fig. 6 (E) and Fig. 7 (B)), or arranged so that part or all of the longitudinal direction bulges inward or outward in the width direction. You may do (FIG. 9 (B)-(D)).

  On the other hand, the compressed groove 10 is not formed in a region corresponding to at least the body fluid discharge site H. The region corresponding to the body fluid discharge site H is a region where the body fluid discharge site H of the wearer abuts at the time of wearing, and is a region in the center in the width direction of the sanitary napkin 1 and in the middle in the longitudinal direction. Specifically, it is good to set it as the range of 20-50 mm with respect to the width direction of the sanitary napkin 1, and the range of 50-100 mm with respect to a longitudinal direction.

  In this way, the compressed grooves 10 are continuously formed along the longitudinal direction of the sanitary napkin 1 on both sides of the region corresponding to the body fluid discharge site H, and the periphery is surrounded by the compressed grooves 10. When the pressing part 11 is formed in a pattern that is arranged in a plurality along the longitudinal direction of the sanitary napkin 1, as shown in FIG. The presence of a plurality of non-compressed portions 11 surrounded by the compressed grooves 10 can counteract not only one direction but also leg pressure from multiple directions, and the sanitary napkin 1 can be reliably prevented from twisting. At the same time, twisting along the pattern of the compressed grooves 10 can be prevented.

  Descending due to the leg pressure at the time of wearing will be described in more detail. As shown in FIG. 4, the sanitary napkin 1 at the time of wearing is basically subjected to leg pressure inward from both sides in the width direction. Depending on the movement and position of the legs, such as walking and the posture of the wearer, the actual acting direction is not always constant but changes randomly. Therefore, if the leg pressure from this random direction cannot be dealt with, a twist as shown in FIG. 5 occurs, and there is a concern about leakage from the twisted part and deterioration of the wearing feeling due to the twisted part. FIG. 5 (A) shows the occurrence of a twist when walking with a conventional sanitary napkin not provided with a pressing groove. Without the squeezing grooves, a large number of folds and fine folds that cross in the width direction of the sanitary napkin are generated, particularly in the crotch region. In addition, FIG. 5 (B) shows, as described in the above-mentioned Patent Document 3, on the bottom surface of the linear pressing groove along the napkin longitudinal direction, the high pressing portion and the low pressing portion are alternately arranged along the groove direction. 6 shows the state of occurrence of a twist when walking with a conventional sanitary napkin formed on the body. In such squeezing grooves, a small twist occurs with the high-pressure squeezed part or the low-pressure squeezed part as a base point. On the other hand, in this sanitary napkin 1, as shown in FIG. 4, a plurality of non-squeezed parts 11 strengthened by the surrounding squeezing grooves 10 are arranged along the longitudinal direction. 11 can exhibit resistance in response to leg pressure from random directions, and can prevent the sanitary napkin 1 from being twisted.

  Moreover, since the said pressing groove 10 is arrange | positioned in the both sides of the area | region corresponding to the bodily fluid discharge | emission site | part H, and is not formed in the area | region corresponding to the bodily fluid discharge | emission site | part H at least, it has been consolidated by compression and made highly rigid. An uncomfortable feeling due to the pressing groove 10 coming into contact with the body fluid discharge site of the wearer does not occur, and the wearing feeling is excellent.

  Next, the size of the non-compressed portion 11 will be described. As shown in FIGS. 1 and 3, the dimension a in the napkin width direction is 1 to 30% with respect to the width W of the absorbent body 4, preferably It is good to set it as 10 to 20%. When the dimension a is less than 1% of the absorber width W, the non-compressed portion 11 is too small to exhibit resistance to leg pressure. Moreover, when the dimension a is larger than 30% of the absorbent body width W, the non-compressed portion 11 is too large, the enhancement effect by the compressed groove 10 is reduced, and the resistance to leg pressure may be reduced. There is a possibility that the squeezed part 11 becomes too large and the squeezing may occur in the non-squeezed part 11 itself, and the squeezing groove 10 surrounding the non-squeezed part 11 may come into contact with the body fluid discharge site of the wearer and cause a sense of discomfort. is there.

  The dimension b in the napkin longitudinal direction is preferably substantially equal to the dimension a in the napkin width direction. By forming the non-compressed portion 11 with substantially the same size in the napkin width direction and the longitudinal direction, the resistance force against the leg pressure from multiple directions can easily act, and the occurrence of twisting can be suppressed. For example, when the width W of the absorbent body 4 is 50 mm, the size (a, b) of the non-compressed portion 11 is 0.5 mm to 15 mm, preferably 1 mm to 10 mm.

  It is preferable to arrange 6 to 45, preferably 10 to 45, non-pressed portions 11 along the longitudinal direction of the sanitary napkin 1. The number of the non-squeezed parts 11 varies depending on the size of the non-squeezed part 11, and the number to be arranged increases if the non-squeezed part 11 is reduced, and the number to be arranged decreases if the non-squeezed part 11 is enlarged. By making the size of the non-compressed portion 11 small, it becomes possible to respond finely to the leg pressure and to reduce the uncomfortable feeling at the time of wearing.

  Next, the position of the pressing groove 10 with respect to the absorbent body 4 will be described. As shown in FIG. 1, the separation distance c along the napkin width direction between the side edge of the absorbent body 4 and the widthwise outer end of the compressed groove 10 is 1 to 20% with respect to the width W of the absorbent body 4. Preferably it is 5 to 20%. If the separation distance c is less than 1% of the absorbent body width W, the compressed groove 10 is too close to the side edge of the absorbent body 4, and the portion cured by the compressed groove 10 may be in direct contact with the skin. . On the other hand, when the said separation distance c is larger than 20% with respect to the absorber width W, the pressing groove 10 may go too much inside the absorber 4, and there exists a possibility that resistance with respect to leg pressure may not be exhibited.

  Moreover, as the separation distance d along the napkin longitudinal direction of the longitudinal direction edge of the said absorber 4 and the napkin longitudinal direction edge part of the pressing groove 10, it is 1-30% with respect to the length L of the absorber 4. , Preferably 3 to 20%. If the separation distance d is smaller than 1% of the absorbent body length L, the compressed groove 10 is too close to the longitudinal edge of the absorbent body 4, and the cured portion of the compressed groove 10 may directly hit the abdomen or the buttocks. Therefore, it is not preferable. On the other hand, when the separation distance d is larger than 30% of the absorbent body length L, the range in which the compressed groove 10 is formed is too short, and it may not be applied to both sides of the body fluid discharge site H.

  The compressed groove 10 preferably has a groove width (width of the groove bottom) of 1 to 5 mm. In addition, the groove depth is preferably 20 to 90% of the thickness of the absorber 4.

  The compressed groove 10 is preferably formed in a pattern in which the non-compressed portion 11 is arranged in one or more rows, preferably 1 row to 3 rows along the longitudinal direction on both sides of the absorber 4. When arrange | positioning the said non-pressing part 11 in each row | line | column of the absorber 4 with multiple rows, it is preferable that the pressing groove 10 of adjacent rows has connected.

  The planar shape of the non-compressed portion 11 is preferably circular as shown in FIG. By making the non-compressed portion 11 circular, there is no directionality of resistance to leg pressure, and a corner portion or a sudden change portion of curvature is not formed on the outline of the non-compressed portion 11, so that the occurrence of twisting is particularly suppressed. It becomes like this. Moreover, the said non-pressing part 11 can be formed in arbitrary planar shapes, as FIG. 6 shows. For example, (A) not a perfect circle, but an almost circle formed by overlapping two wavy lines shifted by 1/2 wavelength, (B) a diamond, (C) a triangle, (D) a rectangle, (E) a heart Examples include shapes. In addition to this, any plane shape such as an ellipse, a polygon, a star, and a flower shape can be adopted as long as the pattern is surrounded by the compressed grooves 10.

  In addition, as shown in FIG. 7, the non-compressed portion 11 protrudes to one or both of the width direction outer side and the inner side of the sanitary napkin 1, and the opposite side of the protruding width direction is a line along the longitudinal direction. It is also possible to form a pattern formed in a shape. In this case, it is preferable to include a pattern protruding outward in the width direction in order to reliably increase the resistance to leg pressure from the outside in the width direction. That is, a pattern that protrudes only outward in the width direction in FIG. 7A, and a zigzag pattern in which the portions protruding outward in the width direction and the portions protruding inward in the width direction are alternately formed along the longitudinal direction. It is preferable to make it a pattern.

  Further, the size of the non-compressed portion 11 does not need to be constant, and may be changed along the longitudinal direction of the sanitary napkin 1 as shown in FIG. In FIG. 8A, it is formed so as to be small at the central portion in the longitudinal direction and gradually increase toward both ends in the longitudinal direction. As a result, when the sanitary napkin 1 is mounted, the resistance to leg pressure is reduced at the center in the longitudinal direction that often hits the inner part of the base of the leg, and the uncomfortable feeling can be reduced. Further, in FIG. 8B, it is formed so that it is large at the center in the longitudinal direction and gradually decreases toward both ends in the longitudinal direction. Thus, when the sanitary napkin 1 is mounted, the resistance to leg pressure can be increased at the center in the longitudinal direction that often hits the inner part of the base of the leg.

  As a modification of the sanitary napkin 1, as shown in FIG. 9, the second compressed groove 12 may be formed in a region that does not overlap the region where the compressed groove 10 is formed. In FIG. 9, the range which forms the said 2nd pressing groove 12 is shown with the oblique line area | region. Although the position where the second pressing groove 12 is formed varies depending on the arrangement pattern of the pressing groove 10, it is preferable that the position where the twist due to leg pressure is likely to occur. By forming the second squeezing groove 12, the resistance force by the squeezing groove 10 can be reinforced, and the sanitary napkin 1 can be more reliably prevented from twisting. The second pressing groove 12 may be formed in a pattern in which a plurality of non-squeezing portions surrounded by the pressing groove 12 are arranged in the same manner as the pressing groove 10 or a simple linear pressing groove. It is good. Moreover, the said 2nd pressing groove 12 compresses the absorber 4 integrally from the liquid-permeable surface sheet 3 by pressing from the outer surface side of the liquid-permeable surface sheet 3 similarly to the said pressing groove 10. FIG. It may be formed or formed by pressing from the liquid-permeable surface sheet 3 side of the absorbent body 4 or the liquid-permeable surface sheet 3 side of the encapsulating sheet 5 surrounding the absorbent body 4 But you can.

  Specifically, as shown in FIG. 9A, when the compressed groove 10 is formed so that the non-compressed portion 11 is aligned in a straight line in the longitudinal direction, the second compressed groove 12 is: It is preferable to arrange | position along the width direction at the longitudinal direction both ends between the pressing grooves 10 and 10, respectively. Thus, the front second squeezing groove 12 can prevent twisting due to leg pressure when the leg moves forward, such as a sitting posture, and the rear second squeezing groove 12 can prevent twisting due to movement of the buttocks. It becomes like this.

  In addition, as shown in FIG. 9B, when the compressed groove 10 is formed so that the non-compressed portion 11 bulges outward in the width direction at the central portion in the longitudinal direction, the second compressed groove 12 is The non-compressed portion 11 is preferably formed on the outer side in the longitudinal direction from the longitudinal range in which the non-compressed portion 11 bulges outward in the width direction, and on the outer side in the width direction than the compressed groove 10. By disposing the non-compressed portion 11 at the center portion in the longitudinal direction so as to bulge outward in the width direction, it is possible to increase the resistance to leg pressure at the center portion in the longitudinal direction. Further, by disposing the second pressing groove 12 on the outer side in the longitudinal direction, this region is reinforced and twisting can be prevented.

  Moreover, as shown in FIG. 9C, when the compressed groove 10 is formed so that the non-compressed portion 11 bulges inward in the width direction at the longitudinal center portion, the second compressed groove 12 is The non-compressed portion 11 is a longitudinal central portion that bulges inward in the width direction, and is preferably formed on the outer side in the width direction than the compressed groove 10. When the non-compressed portion 11 bulges inward in the width direction at the center portion in the longitudinal direction, the uncomfortable feeling at the time of wearing in this region can be reduced. Further, the second squeezing groove 12 increases resistance to leg pressure and prevents twisting.

  Furthermore, as shown in FIG. 9 (D), when the compressed groove 10 is formed so that the non-compressed portion 11 bulges inward in the width direction over the entire length, the second compressed groove 12 is It is preferable to form in the longitudinal center part outside the compressed groove 10 in the width direction. The discomfort at the time of mounting can be reduced by such an arrangement of the compressed grooves 10. By the arrangement of the second pressing groove 12, resistance to leg pressure is increased, and twisting can be prevented.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impervious back sheet, 3 ... Impervious surface sheet, 4 ... Absorber, 5 ... Encapsulating sheet, 10 ... Squeeze groove, 11 ... Non-squeezed part, 12 ... Second Squeezing groove

Claims (4)

In the absorbent article in which the pressing groove that is recessed toward the non-skin contact surface side is formed on the skin contact surface side of the main body portion where the absorbent body is interposed between the top sheet and the back sheet,
The compressed groove is formed continuously along the longitudinal direction of the absorbent article on both sides of the region corresponding to the body fluid discharge site, and the non-compressed part surrounded by the compressed groove is the absorbent article. An absorbent article, wherein the absorbent article is formed in a pattern that is arranged in a plurality along the longitudinal direction, and is not formed at least in a region corresponding to a body fluid discharge site.   2. The absorbent article according to claim 1, wherein the planar shape of the non-compressed portion is any one of a circle, a rhombus, a triangle, a quadrangle, and a heart shape, or two or more selected from these.   The size of the non-compressed portion is small at the central portion in the longitudinal direction and formed so as to gradually increase toward both ends in the longitudinal direction, or is large at the central portion in the longitudinal direction and gradually decreases toward both ends in the longitudinal direction. The absorbent article according to claim 1, which is formed as described above.   The absorbent article in any one of Claims 1-3 in which the 2nd pressing groove is formed in the area | region which does not overlap with the area | region in which the said pressing groove is formed.

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