JP2014064631A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure an absorption amount and to prevent lateral leakage even when an absorber is made thinner.SOLUTION: An absorber 4 has both side ends in a width direction folded back and forms a folded part 10 and imparts embossment 11 in a pattern following a sanitary towel longitudinal direction to the folded part 10. By providing the folded part 10, it is possible to increase an absorption amount of body fluid on both side parts in the width direction of the absorber 4. Also, by imparting the embossment 11 to the folded part 10, the body fluid is easily dispersed in the sanitary towel longitudinal direction along the embossment 11 where the body fluid is highly condensed, so that lateral leakage of the body fluid can be prevented. Particularly, since the embossment 11 is imparted to a laminated part, even a thin absorber can increase a density difference between an embossed part and a non-embossed part, hence improving dispersability of the body fluid.

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, and incontinence pads for absorbing menstrual blood and vaginal discharge. The present invention relates to an absorbent article having an absorbent body in which a folded portion is formed.

  Conventionally, as absorbent articles such as sanitary napkins, panty liners, cage sheets, incontinence pads, etc., it consists of a liquid-impermeable back sheet made of polyethylene sheet or polyethylene laminated nonwoven fabric, and a nonwoven fabric or porous plastic sheet. There is known one in which an absorbent body made of cotton-like pulp or the like is interposed between the liquid-permeable surface sheet.

  This type of absorbent article is required to be thinner and more compact due to demands such as good wearing comfort, inconspicuousness in clothes lines, and convenience of carrying and storage. Certain absorbers are also required to be thin. However, when the absorber is made thinner, the amount of body fluid absorbed is also reduced, and anxiety about leakage of body fluid occurs, so there are many opinions that refrain from use for this reason.

  In the following Patent Document 1, the absorber has a multilayer structure of an upper layer portion and a lower layer portion that are laminated by folding both sides of the absorber along the longitudinal direction of the absorber, and the lower layer portion includes the upper layer portion. There is disclosed one having a compressed region in which the unevenness and density are higher than those in the center in the width direction.

  Further, in Patent Document 2 below, the end portion of the absorbent composite is folded so that the portion has a thickness, and when the liquid diffuses, it functions as a physical weir to prevent leakage. It is disclosed.

JP 2010-104546 A Japanese Patent Laid-Open No. 2007-50024

  However, in the absorbent article described in Patent Document 1, even if a compressed region with uneven density is formed in the lower layer portion, the absorber is composed of an upper layer portion and a lower layer portion, so the absorber becomes thicker, Thinning has not been realized. For this reason, the feeling of wearing was bad and problems such as being easily noticeable from the clothes line occurred. In addition, by forming a compressed region with a high density of irregularities in the lower layer part, a dry feeling on the upper layer surface can be obtained by improving liquid drawability of the lower layer and suppressing liquid diffusion in the upper layer, It is said that the side portion liquid leakage can be prevented by bending the absorbent body at, but the compression region applied only to the lower layer portion does not directly suppress the liquid diffusion of the upper layer portion, Lateral leakage may occur.

  Furthermore, in the bodily fluid absorbent article described in Patent Document 2, the end portion of the absorbent composite is folded to increase the amount of absorption of this portion, but in addition to the thickness of the folded portion being increased, Since there is no means for suppressing the diffusion of body fluid in the width direction, the same problem as in Patent Document 1 can occur.

  Then, the main subject of this invention is providing the absorbent article which can ensure absorption amount and can prevent a side leak even if it makes an absorber thin.

In order to solve the above problems, as the present invention according to claim 1, in an absorbent article in which an absorber is interposed between a liquid-permeable top sheet and a back sheet,
The absorbent article is characterized in that both ends in the width direction are folded to form folded portions, and the folded portions are embossed in a pattern along the longitudinal direction of the absorbent article. Provided.

  In the first aspect of the present invention, as the absorbent body, a folded portion is formed by folding both side ends in the width direction, and embossing is applied to the folded portion in a pattern along the longitudinal direction of the absorbent article. . Since the folded portion is formed on both sides in the width direction of the absorbent body, the amount of body fluid absorbed on both sides in the width direction is increased, and the amount of absorption can be secured even if the absorber is thinned. Since embossing of a predetermined pattern is given, body fluid that has reached both sides in the width direction of the absorbent body is likely to diffuse in the longitudinal direction of the absorbent article along the embossed density, and the body fluid in the width direction Diffusion is suppressed and side leakage of body fluid can be prevented. Therefore, even if the absorber is thinned, the amount of absorption can be secured and side leakage can be prevented.

  In particular, in this absorbent body, embossing is given to the laminated portion of the absorbent body, so that the compressibility of the absorbent body by embossing becomes larger than when it is given to the single layer portion of the absorbent body, and the thin absorbent body Even if it exists, since the density difference between the embossed part and the non-embossed part can be increased, the diffusibility of the body fluid in the longitudinal direction along the emboss can be further improved, and the diffusion of the body fluid in the width direction is suppressed. As a result, side leakage can be prevented more reliably.

  As the present invention according to claim 2, there is provided the absorbent article according to claim 1, wherein the folded portion is formed by folding both end portions in the width direction of the absorber to the front surface side or the back surface side of the absorber. The

  In the invention according to the second aspect, in that the amount of absorption at both sides in the width direction is increased by providing the folded portion, the both ends in the width direction of the absorber may be folded back to the surface side of the absorber. It stipulates that it may be folded back to the back side.

  According to a third aspect of the present invention, there is provided the absorbent article according to any one of the first and second aspects, wherein the folded portion has a width of 6 mm to 15 mm.

  In the invention of claim 3, the width of the folded portion is reduced for the purpose of ensuring the amount of body fluid absorbed by the folded portion and preventing a sense of incongruity at the time of wearing without feeling the thickness of the absorbent body. This is limited to a predetermined range.

  As the present invention according to claim 4, the thickness of the material before folding the widthwise opposite side ends of the absorber is 1.2 mm or less, and the maximum thickness of the absorber after the embossing is applied to the folded portion Is 2.0 mm or less, The absorbent article in any one of Claims 1, 2 is provided.

  In the invention of claim 4, the thickness of the material before forming the folded portion is 1.2 mm in order to improve the wearing feeling by making the absorber thin and make it less noticeable from the clothes line. The maximum thickness after the embossing is applied to the folded portion is preferably 2.0 mm or less.

  As the present invention according to claim 5, the absorbent article according to any one of claims 1 to 4, wherein the folded-back portion is laminated in three or more layers by turning back both ends of the absorbent body in the width direction. Is provided.

  In the fifth aspect of the invention, the amount of absorption at both side portions in the width direction can be increased by forming the folded portion into a laminated structure of three or more layers. In addition, when embossing is applied to the folded part, the difference in density between the embossed part and the non-embossed part can be further increased, so that fluid diffusibility in the longitudinal direction is further improved and side leakage is reliably prevented. become able to.

  As the present invention according to claim 6, the embossed pattern is a pattern composed of a single figure long in the longitudinal direction of the absorbent article or a plurality of patterns arranged continuously or intermittently in the longitudinal direction of the absorbent article. The absorbent article according to any one of claims 1 to 5, wherein the absorbent article is any one of a pattern made of a figure or a combination thereof.

  In the sixth aspect of the present invention, as the embossed flat pattern, a pattern along the longitudinal direction of the absorbent article is specifically exemplified. In detail, a pattern consisting of a single figure long in the longitudinal direction of the absorbent article, such as a straight line, a pattern consisting of a plurality of figures in which a number of ellipses etc. are continuously arranged in the longitudinal direction of the absorbent article, intermittent It can be any one of patterns formed by a plurality of figures in which a large number of straight lines and the like are intermittently arranged with respect to the longitudinal direction of the absorbent article, such as a line, or a combination thereof.

  As described above in detail, according to the present invention, even if the absorber is thinned, the amount of absorption can be secured and side leakage can be prevented.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. It is the II-II arrow directional view. FIG. 6 is a perspective view of the absorber 4. It is a cross-sectional view (II-II line arrow view of FIG. 1) of the absorber 4 which concerns on another form. (A)-(C) are the cross-sectional views of the absorber 4 which concerns on another form. (A)-(D) are the top views of the folding | turning part 10 which shows the pattern example (the 1) of the embossing 11. FIG. (A), (B) is a top view of the folding | returning part 10 which shows the pattern example (the 2) of the embossing 11. FIG. (A), (B) is a top view of the folding | turning part 10 which shows the pattern example (the 3) of the embossing 11. FIG. It is a cross-sectional view of the absorber 4 showing a processing step (1) of the emboss 11. FIG. 3A is a cross-sectional view of the absorbent body 4 and FIG. 4B is a plan view of the absorbent body 4, showing a processing step (No. 2) of the emboss 11. It is a cross-sectional view of the sanitary napkin 1 according to another embodiment. It is a cross-sectional view of the sanitary napkin 1 according to another embodiment.

  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 FIG. 1, the sanitary napkin 1 according to the present invention has a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, and the like, and a liquid-permeable surface that allows permeation of blood or a cage quickly. The sheet 3, the absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2 and 3, and the absorbent body 4 are surrounded to maintain the shape and improve the diffusibility of the absorbent body 4. It is comprised from the crepe paper 5, and the side nonwoven fabrics 7 and 7 arrange | positioned along the longitudinal direction at the surface both sides, respectively. Around the absorbent body 4, at the front and rear edge portions in the napkin longitudinal direction, the outer edge portion of the liquid-impermeable back sheet 2 and the liquid-permeable surface sheet 3 is formed of an adhesive such as hot melt, heat seal, or the like. The liquid-impervious back sheet 2 and the side nonwoven fabric 7 which are joined by an adhesive means and extend laterally from the edge of the absorbent body 4 at both side edges thereof are adhesives such as hot melt or heat. The outer periphery flap part F which is joined by adhesion | attachment means, such as a seal | sticker, and the absorber 4 does not exist in the outer periphery is formed.

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. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond 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 the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft.

  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 highly water-absorbing polymer. As the superabsorbent polymer, superabsorbent polymer granular powder (SAP) or superabsorbent polymer fiber (SAF) can be used. 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. In the production method of the absorbent body 4, it is preferable that heat-bondable fibers and a highly water-absorbing polymer are mixed with pulp, and a web is formed by the airlaid method so that the thickness can be reduced, followed by heat-bonding. The absorber 4 will be described in more detail later.

  When the crepe paper 5 surrounding the absorbent body 4 is provided as in this example, the crepe paper 5 is interposed between the liquid-permeable surface sheet 3 and the absorbent body 4 as a result. The crepe paper 5 which is excellent in diffusing body fluids quickly prevents reversal of menstrual blood and the like. When an air-laid absorber is used as the absorber 4, the crepe paper 5 may not be used because the absorption performance of the absorber itself is excellent. The crepe paper 5 may be a non-woven fabric or a low-weight air-laid non-woven fabric. Further, without surrounding the absorbent body 4, it is interposed only between the absorbent body 4 and the liquid-permeable surface sheet 3, or between the absorbent body 4 and the liquid-permeable surface sheet 3 and between the absorbent body 4 and the liquid-permeable surface sheet 3. Each can be interposed between the liquid back sheet 2 and the like.

  On the other hand, side non-woven fabrics 7 and 7 are provided on both sides of the sanitary napkin 1 along the longitudinal direction and almost the entire length of the napkin 1, respectively. Wing-like flaps W and W are formed by a part of the liquid-impervious back sheet 2 that extends laterally and also laterally.

  As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of an important function. For example, if importance is placed on functions such as preventing the penetration of bodily fluids or enhancing the feeling of touch, it is necessary to use a water-repellent non-woven fabric coated with a silicon-based, paraffin-based, or alkylchromic chloride-based water repellent. desirable. If importance is attached to the absorbability of body fluids in the wing-shaped flaps W, W, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the synthetic fiber production process, Treating with metal salt such as stannic, partially dissolving the surface to make it porous and making the synthetic fiber swell or porous by applying a metal hydroxide, etc., applying capillary action to impart hydrophilicity It is desirable to use a hydrophilic treated nonwoven fabric.

[About Absorber 4]
In the sanitary napkin 1, as shown in FIGS. 2 and 3, the absorbent body 4 has a longitudinal end on each side in the width direction by laminating both side ends in the width direction with a predetermined width. The folded portions 10 and 10 having a predetermined width are formed along the direction, and the emboss 11 is given to the folded portion 10 in a pattern along the napkin longitudinal direction.

  The folded portion 10 is formed with a predetermined width along the longitudinal direction only on both sides in the width direction of the absorbent body 4, and the intermediate portion in the width direction of the absorbent body 4 is an absorption where the folded section 10 is not provided. The body 4 has a single-layer structure. The folded portion 10 is formed so that the width of the folded portions 10 on both sides in the width direction sufficiently includes the width of the body fluid discharge site of the wearer, and preferably disposed on both sides of the napkin. The side nonwoven fabrics 7 and 7 are formed to have approximately the same width as the distance between the inner ends thereof. Further, it is desirable that the emboss 11 is applied only to the folded portion 10 and not applied to the intermediate portion in the width direction of the absorbent body 4.

  As described above, in the sanitary napkin 1, the folded portions 10 are provided on both sides in the width direction of the absorbent body 4, so that the amount of body fluid absorbed at both sides in the width direction of the absorbent body 4 increases. Even if the thickness of 4 is reduced, the amount of absorption can be secured. Moreover, since the emboss 11 having a predetermined pattern is given to the folded portion 10, body fluid that diffuses in the width direction from the middle portion of the absorber 4 in the width direction and reaches both sides in the width direction is increased in density. Since it becomes easy to spread | diffuse in the napkin longitudinal direction along the made embossing 11, spreading | diffusion of the bodily fluid to a napkin width direction is suppressed, and it becomes possible to prevent a side leak of a bodily fluid.

  In particular, in the present absorbent body 4, since the emboss 11 is given to the folded portion 10 that is a laminated portion of the absorbent body, the compression of the absorbent body 4 by the emboss 11 is more than when it is given to the single layer portion of the absorbent body 4. Since the rate increases and the difference in density between the embossed part and the non-embossed part can be increased even with a thin absorbent body, the diffusibility of body fluid in the longitudinal direction of the napkin along the emboss 11 can be further improved. As a result of suppressing the diffusion of the body fluid in the width direction, side leakage can be prevented more reliably.

  The laminated portion of the folded portion 10 may be bonded by applying a hot melt adhesive or the like between the layers, or it may be bonded or fused by the emboss 11 in a state of being simply laminated without using an adhesive. May be.

  As shown in FIGS. 2 and 3, the folded-back portion 10 folds both ends in the width direction of the absorbent body 4 to the surface side of the absorbent body 4 (skin side when mounted, liquid-permeable topsheet 3 side). Alternatively, as shown in FIG. 4, the absorbent body 4 may be folded back to the back side (non-skin side at the time of wearing, liquid-impervious back sheet 2 side). In any case, the amount of absorption at both sides in the width direction of the absorber 4 increases, and the effect of preventing side leakage can be exhibited. On the other hand, when folded back to the front side, the unevenness on the back side is reduced, so it is effective in terms of difficulty in conspicuous to the clothes line at the time of wearing. Since it reduces, it is effective at the point by which the discomfort by the folding | turning part 10 is hardly felt. When folded back to the back surface side, the emboss 11 may be applied from the front surface side as shown in FIG. 4, or conversely, it may be applied from the back surface side.

  As shown in FIG. 2, the width C of the folded portion 10 is 6 mm ≦ C ≦ 15 mm, preferably 6 mm ≦ C ≦ 10 mm. If the thickness is smaller than 6 mm, a sufficient amount of absorption cannot be ensured. Further, the width A of the intermediate portion in the width direction of the absorber 4 where the folded portion 10 is not provided is preferably 50 mm ≦ A ≦ 65 mm, and preferably 54 mm ≦ A ≦ 60 mm. The entire width B of the absorber 4 Is 62 mm ≦ B ≦ 95 mm, preferably 66 mm ≦ B ≦ 72 mm.

  The thickness D (the thickness at the width A of the intermediate portion in the width direction of the absorber 4 where the folded portion 10 is not provided) as shown in FIG. 1.2 mm or less, preferably 0.3 mm ≦ D ≦ 0.9 mm. This sanitary napkin 1 is intended for thin and compact napkins from the standpoints of good wearing comfort, inconspicuousness in clothes lines, and convenience of carrying and storage. The thickness is also thin.

  Moreover, in such a material, the maximum thickness E of the absorbent body 4 (as a matter of course, as shown in FIG. 2) after folding both side ends in the width direction to form the folded portion 10 and providing the emboss 11. The thickness of the convex portion of the folded portion 10 formed in the concavo-convex shape by the emboss 11 is 2.0 mm or less, preferably 0.5 mm ≦ E ≦ 1.5 mm. As described above, the thickness of the absorbent body 4 as a whole is realized by defining the maximum value of the thickness of the folded portion 10 that is the laminated portion to 2.0 mm or less. In order to adjust the maximum thickness E of the turn-up portion 10, the embossing roll has a concave portion (the surface of the embossing roll on which no embossing convex portion is provided) and a flat roll facing the embossing roll or an embossing convexity that meshes with the embossing roll. The distance between the embossing roll and the second embossing roll is adjusted so that the embossing 11 is compressed by the embossing convex portion and the embossing roll concave portion of the embossing roll compresses the entire surface of the folded portion 10. It is possible to obtain a reduction amount in which the thickness of the folded-back portion 10 is reduced in advance by pulling in the surrounding fibers, and use a means for compressing by adjusting the depth of the emboss 11 and the interval between adjacent embosses. it can.

  2 and 3, the folded portion 10 may have a two-layer structure in which both side edges in the width direction of the absorber 4 are folded once, or as shown in FIG. It is good also as a laminated structure of 3 layers or more which turned the both ends of the width direction twice or more times. In the case of a laminated structure of three or more layers, the amount of absorption at both sides in the width direction can be increased and the compression ratio when embossed 11 is applied to the folded portion 10 is greater than that of the two-layer structure. As a result, the diffusibility of the body fluid in the longitudinal direction due to the difference in density can be further improved, so that side leakage can be reliably prevented. In FIG. 5 (A), the both ends of the absorbent body 4 in the width direction are folded back toward the inner side, and then folded toward the outer side so as to be laminated on the outer surface side of the folded portion at the inner side position. In other words, it has a three-layer structure of Z-folding. In (B), the widthwise ends of the absorbent body 4 are folded back toward the inner side, and then folded toward the outer side so as to be interposed between the layers of the folded portion at the inner side position. A three-layer structure in a roll form is used. In (C), a four-layer structure of a Σ-like fold is used, which is folded three times so as to be laminated on the outer surface side of each folded portion.

  Next, the planar pattern of the emboss 11 will be described. As long as the emboss 11 is formed in a pattern along the napkin longitudinal direction, the shape is not particularly limited. As shown in FIG. 6, a pattern composed of a single figure long in the napkin longitudinal direction is shown. 7, a pattern composed of a plurality of figures continuously arranged in the longitudinal direction of the napkin, and a pattern composed of a plurality of figures intermittently arranged in the longitudinal direction of the napkin as shown in FIG. Any of these may be used, or a combination of these may be used. The pattern along the longitudinal direction of the napkin means that the embossed groove formed by each figure has a dimension in the longitudinal direction of the napkin rather than the dimension in the width direction of the napkin in both the pattern consisting of a single figure and the pattern consisting of a plurality of figures. Means that it is formed long. As a result, the body fluid diffusing in the napkin width direction in each embossed groove can be changed to a flow diffusing in the napkin longitudinal direction.

  The emboss 11 may be provided in at least one row with respect to the folded-back portion 10 and may be provided over two or more rows at intervals in the napkin width direction as in the illustrated example. Further, the emboss 11 may be provided over the entire length of the absorbent body 4 or may be provided only in the middle in the longitudinal direction of the absorbent body 4 including at least a portion corresponding to the body fluid discharge portion.

  In the pattern consisting of a single figure shown in FIG. 6, for example, a single figure in which embossed concave portions such as (A) straight lines, (B) ellipses, (C) rhombuses, and (D) wavy shapes are continuous may be used. it can. In this pattern, the flow of body fluid diffusing in the width direction can be reliably changed in the longitudinal direction by the emboss 11.

  In the pattern in which a plurality of figures shown in FIG. 7 are continuously arranged, for example, (A) ellipse, (B) rhombus, and the like can be arranged so that the ends in the napkin longitudinal direction are connected to each other. In this pattern, the connection part of each figure becomes a base point, and the absorber 4 is easily bent, and the napkin is easily bent along the roundness of the body.

  In the pattern in which a plurality of figures shown in FIG. 8 are intermittently arranged, for example, as shown in the illustrated example, an intermittent pattern in which linear embossed portions 11a and spaced portions 11b are alternately arranged in the napkin longitudinal direction is used. Can do. The shape of the embossed portion may be an ellipse, a rhombus, a waveform, etc. in addition to a straight line. When the emboss 11 is formed by such an intermittent pattern, the absorber 4 is easily bent at the intermittent portion, and the absorber 4 can be made flexible.

  As shown in FIG. 8A, when the length of the embossed portion 11a in the napkin longitudinal direction is L1, and the length of the separating portion 11b in the napkin longitudinal direction is L2, the relationship of L1> L2 is established. It is preferable. Thereby, a bodily fluid becomes easy to spread | diffuse in the napkin longitudinal direction.

  When the embosses 11 are arranged in a plurality of rows in the napkin width direction, as shown in FIG. 8A, the emboss portions 11a and the separation portions 11b are arranged so as to coincide with each other in the napkin width direction. Alternatively, as shown in FIG. 8B, the embossed portion 11a and the separating portion 11b may be arranged in a zigzag pattern with the phases shifted from each other with respect to the napkin width direction. When arranged in a staggered manner, body fluid that diffuses in the napkin width direction does not leak directly to the outside, and is effective in that it can be reliably diffused in the longitudinal direction of the napkin by the embossed portion 11b.

  In order to apply the emboss 11, as shown in FIG. 9, both end portions in the width direction are folded back to form the folded portion 10, and then an emboss roll having a predetermined embossed convex portion and the emboss roll are disposed to face each other. A method of applying by passing between a flat roll or a second embossing roll having an embossing convex portion meshing with the embossing roll can be used. In this method, since the emboss 11 is applied to the laminated portion of the folded portion 10, the thickness of the folded portion 10 can be reduced by embossing.

  In addition, as shown in FIG. 10, embosses 11 are provided in advance in a pattern along the longitudinal direction of the napkin on the planned folding portions on both sides in the width direction, and embosses 12 such as dotted lines and straight lines are provided on the planned folding lines. After that, it is possible to use a method of folding back both ends in the width direction along the planned folding line. In this method, since the emboss 12 can be provided in advance at the folding line position, both side ends in the width direction are easily folded back. Further, in this case, as shown in FIG. 10B, it is preferable that the emboss 11 has a pattern in which a plurality of waveforms are intermittently arranged, whereby the folded portion becomes supple and easily folded. be able to.

  By the way, in this sanitary napkin 1, as shown in FIG. 11, a side emboss 13 extending from the surface side of the side nonwoven fabric 7 to the folded portion 10 of the absorbent body 4 may be provided. By providing the side embossing 13, the folded portion 10 can be made thinner. It is desirable not to provide the side emboss 13 on the inner side in the width direction than the folded portion 10 of the absorbent body 4 so as not to hinder diffusion of the body fluid in the width direction.

On the other hand, as shown in FIG. 12, the inner end of the side nonwoven fabric 7 is folded back twice, and an elastic elastic member 14 is disposed along the longitudinal direction of the napkin inside the double sheet, so that at least body fluid In the case of the sanitary napkin 1 in which a pair of left and right three-dimensional gathers BS and BS projecting to the skin side in a predetermined section in the front-rear direction so as to include the discharge site, the standing base end position BS ₀ of the three-dimensional gather BS is In addition, it is preferable that the absorber 4 is positioned above the folded portion 10 or at the outer side in the width direction than the folded portion 10, and is preferably not positioned on the inner side in the width direction from the folded portion 10. Thereby, diffusion of the body fluid to the outside in the width direction is likely to occur, and the body fluid can be easily absorbed by the folded portion 10.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impervious back sheet, 3 ... Impervious surface sheet, 4 ... Absorber, 5 ... Crepe paper, 7 ... Side nonwoven fabric, 10 ... Folded part, 11 ... Emboss, F ... Outer circumference Flap, W ... Wing flap

Claims (6)

In the absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet,
The absorbent article is characterized in that both end portions in the width direction are folded back to form folded parts, and the folded parts are embossed in a pattern along the longitudinal direction of the absorbent article.   The absorbent article according to claim 1, wherein the folded portion is formed by folding both end portions in the width direction of the absorbent body to the front surface side or the back surface side of the absorbent body.   The absorbent article according to claim 1, wherein a width of the folded portion is 6 mm to 15 mm.   The thickness of the raw material before folding the widthwise opposite ends of the absorber is 1.2 mm or less, and the maximum thickness of the absorber after the embossing is applied to the folded portion is 2.0 mm or less. Item 10. An absorbent article according to any one of Items 1 and 2.   The absorbent article in any one of Claims 1-4 by which the said folding | turning part is laminated | stacked by three or more layers by turning back the both ends of the width direction of the said absorber in multiple numbers.   The embossing pattern is either a pattern consisting of a single figure long in the longitudinal direction of the absorbent article, or a pattern consisting of a plurality of figures arranged continuously or intermittently in the longitudinal direction of the absorbent article, or these The absorbent article according to any one of claims 1 to 5, which is a combination of the above.

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