JP4912846B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article provided with a wing-shaped flap that is used so as to be wound around a crotch portion of an underwear when being fixed to the underwear.

  Conventionally, as an absorbent article N such as a sanitary napkin, a panty liner, a cage sheet, an incontinence pad, for example, as shown in FIG. 10 and FIG. 2. Description of the Related Art There is known a structure in which an absorbent body 52 made of cotton pulp or the like is interposed between a back sheet 50 and a liquid permeable top sheet 51 made of a nonwoven fabric or a permeable plastic sheet.

  As this type of absorbent article N, in order to prevent misalignment in the mounted state, for example, one or a plurality of adhesive layers 53, 53 are formed on the non-skin contact surface side (outer surface), and the napkin body The wing-shaped flaps W, W extending outward are integrally formed on both sides in the longitudinal direction of the wing, and the wing-shaped flaps W, W are adhered to a surface (outer surface) on the liquid-impervious back sheet 50 side. There is one in which the agent layers 54 are provided.

  When the absorbent article N is fixed to the undergarment 30, as shown in FIG. 12, the absorbent article N is locally applied and the wing-shaped flaps W, W protruding laterally are taken out from the undergarment. The wing-shaped flaps W, W are folded at the folding lines RL, RL, and are adhered to the outer surface of the crotch portion of the underwear 30 while winding the crotch portion of the underwear.

  On the other hand, when the absorbent article N is individually packaged, the wing-shaped flaps W, W are individually folded in a non-use surface side (back surface side) (hereinafter sometimes referred to as back folding). As shown in FIG. 13, the first mode of sealing in a bag (for example, refer to Patent Document 1), the wing-shaped flaps W and W are folded to the use surface side (hereinafter also referred to as belly fold for convenience). 2) A second mode of covering each pressure-sensitive adhesive layer 54, 54 and enclosing it in an individual bag in a state of being connected by a release paper 56 straddling between the pressure-sensitive adhesive layers 54, 54 (see, for example, Patent Document 2) ) Etc. exist.

  However, in the case of the individual packaging form according to the first aspect, when the individual packaging bag is opened, the release paper is peeled off, and the absorbent article N is attached to the underwear, the wing-shaped flaps W, W are folded back. Since the wings are attached, the wing-shaped flaps W and W have to be spread by hand, and in some cases, the adhesive layer 54 of the wing-shaped flaps W and W adheres to the main body backsheet 50, When peeled off, the base material of the main body backsheet 50 may be stretched or torn, making the napkin unusable.

  In the case of the individual form according to the second aspect, since the wing-shaped flaps W, W have creases toward the use surface side, the adhesive layer 54 formed on the wing-shaped flap W is formed on the back surface of the main body. The adhesive layer 53 is not adhered. However, it is necessary to peel off the release paper 56 straddling between the wing-shaped flaps W and W by hand and discard it, and the one-step opening method (the release paper can be automatically removed between one opening hand). The method to make it possible) has not been realized. Further, even if the release paper 56 is peeled off, the wing-shaped flaps W and W are not automatically opened and remain folded on the surface side by the folding folds. It had to be spread by hand, and it took time and effort to wear it.

Therefore, in the following Patent Document 3, the applicant of the present invention, as shown in FIG. 14, in the individually packaged product state, the wing peeling for covering the anti-displacement adhesive layers 61, 61 formed on the wing-shaped flaps W, W is performed. The material 62 is provided, the wing-shaped flaps W, W are folded together with the wing release material 62 on the liquid-permeable surface sheet 63 side, and the wing-shaped release material 62 is fold line position of the wing-shaped flaps W, W The wing release material 62 extends directly to the surface of the liquid-impervious back sheet 64 or directly with the individual packaging material on the liquid-impervious back sheet 64 side. It is fixed when the wing-like flaps W and W are folded together with the wing release material 62 on the liquid-permeable surface sheet 63 side while being fixed through a main body release material covering the agent layer. Have an overlap said wing-shaped flaps W, the distal ends of the W, wing-shaped flaps W, W together proposed the napkin 60 that is temporarily fixed by the adhesive layer in this overlapping portion.
Japanese Patent Laid-Open No. 9-94267 Utility Model Registration No. 2567607 JP 2004-113590 A

  According to the napkin according to Patent Document 3, the wing-shaped flap does not adhere to the pressure-sensitive adhesive layer formed on the back surface of the main body at the time of opening, and the one-step opening method can be realized and the wing is peeled off when the packaging material is peeled off. It is possible to reduce the wearing effort by automatically unfolding the flap. In addition, by temporarily fixing the wing-shaped flaps, the wing-shaped flaps can be stably folded in the manufacturing process, and the wing-shaped flaps can be prevented from fluttering during line conveyance, thereby stabilizing the operation. It becomes possible.

  However, since the wing-shaped flaps W and W are temporarily fastened together directly by the adhesive layer, the adhesive layer remains on the surface of the wing-shaped flap on the surface sheet side, and is attached to the shorts. There is a problem that the pressure-sensitive adhesive layer is exposed on the outer surface side of the wing-shaped flap.

  In addition, when the individual packaging material is peeled from the napkin together with the release material upon opening, since the wing-shaped flap is folded to the liquid-permeable surface sheet side, it receives a large resistance at the stage of developing the release material for the wing. There was a risk of the release material for tearing.

Accordingly challenge of the present invention comprises a wing-shaped flaps, the absorbent article in which the wing-shaped flaps are folded belly individually packaged state, when temporarily fixed fold the wing-shaped flaps on the surface sheet side, the wing-shaped flaps together so as not to have an adhesive layer on the surface of the surface sheet side of the time for peeling with separation material the KoSozai upon opening the napkin, the wing release material is deployed with the wing-shaped flaps without resistance smoothly, It is to make it possible to easily peel the release material from the absorbent article.

As the present invention according to claim 1 to solve the previous SL challenges, respectively on both sides of the body portion where the absorber is interposed between a liquid-permeable topsheet and liquid-impermeable back sheet, when worn In the absorbent article formed with a wing-shaped flap that is fixed so as to involve the crotch part of the underwear,
A main body anti-slip adhesive layer is formed on the liquid-impervious back sheet side surface of the main body part, and a wing anti-slip adhesive layer is formed on the liquid-impervious back sheet side surface of the wing-shaped flap. ,
In the individually packaged product state, the main body anti-slip adhesive layer is covered with the main body release material, the anti-slip adhesive layer formed on the wing-shaped flap crosses in the width direction, and the tips of both wing-shaped flaps The wing release material and the main body release material are covered with a wing release material having a length extending outwardly, and the main body release material is disposed on the outer surface side of the liquid-impermeable back sheet. Disposed, and further in a layer relationship in which the wing release material is disposed on the outer surface side thereof,
The wing-shaped flap is folded together with the wing release material on the liquid-permeable surface sheet side, and the individual packaging material is fixed to the main body release material and / or the wing release material,
On the liquid-permeable surface sheet side, the wing-shaped flaps do not overlap each other, and the tip portions of the wing release material overlap each other, and the wing release materials are separated by the wing temporary fixing adhesive layer at the overlapping portion. From the front side of the absorbent article that can be joined, the front fixed end part of the individual packaging material and the release material for the main body, the front shape line along the absorbent article width direction of the release material for the wing, the wing shape It is located in the order of the front base of the flap and the front end of the wing temporary fixing adhesive layer, and the front shape line of the wing release adhesive layer is at least more than the front end of the wing temporary fixing adhesive layer. An absorbent article is provided that is spaced 5 mm or more forward.

  In the present invention described in claim 1, when the wing-shaped flap is folded and temporarily fixed, the wing release material is set to have a length extending outward from the ends of the both wing-shaped flaps, and folded in the stomach. In this state, the tip portions of the wing release materials overlap with each other, and the wing release materials are joined to each other by the wing temporary fixing pressure-sensitive adhesive layer at the overlapping portion. Therefore, since the wing temporary fixing pressure-sensitive adhesive layer is not formed on the wing-shaped flap, the pressure-sensitive adhesive layer is not exposed to the outer surface side of the wing-shaped flap in a state where the wing-shaped flap is mounted.

  In the present absorbent article, when the individual packaging material is peeled off, the wing-shaped flap is pulled to the back sheet side by the wing release material, and the folded wing-shaped flap is automatically deployed. Further, after the wing-shaped flap is deployed, a certain amount of creases are attached to the use surface side, so that the wing-shaped flap can be prevented from adhering to the anti-slipping adhesive layer formed on the back surface of the main body. Further, when the individual packaging material is peeled, the peeling material for the main body is peeled together with the peeling material for the wing, so that a complete one-step opening method can be realized.

  In the present invention, the front fixed end portion between the individual packaging material and the main body release material, the front shape line along the absorbent article width direction of the wing release material, the front root of the wing-shaped flap, the wing temporary The relative positional relationship of the front end portion of the fastening adhesive layer is defined, and the front shape line of the wing release material is separated from the front end portion of the wing temporary fastening adhesive layer by at least 5 mm or more in front. By adopting, when opening the individual packaging material together with the release material from the napkin when opening, the release material for wing can be developed with wing-like flap smoothly without resistance, and the release material can be easily peeled from the absorbent article And will be able to.

  As the second aspect of the present invention, there is provided the absorbent article according to the first aspect, wherein the liquid-impermeable back sheet and / or the wing release material is subjected to an opacity treatment or printing.

  According to the second aspect of the present invention, it is possible to improve the concealability when the used absorbent article is wrapped and discarded.

  As a third aspect of the present invention, the wing-shaped flap is folded to the liquid-permeable surface sheet side together with the side outer peripheral flap with the position near the outer side of the absorber side edge as a fold line. An absorbent article as described in 1 above is provided.

  The absorption according to any one of claims 1 to 3, wherein the present invention according to claim 4 is embossed in a region including a base position of the wing-shaped flap or a reinforcing sheet is interposed between the sheets. A sex article is provided.

  According to the third and fourth aspects of the present invention, the base portion of the wing-shaped flap can be deployed without opening at the time of opening.

  As described above in detail, according to the present invention, in an absorbent article provided with a wing-shaped flap, and the wing-shaped flap folded in a stomach in an individual packaging state, the wing-shaped flap is folded to the surface sheet side and temporarily fixed. Since the pressure-sensitive adhesive layer is not provided on the surface of the surface-shaped flap, the pressure-sensitive adhesive layer is not exposed on the outer surface side of the wing-shaped flap.

  Moreover, when the individual packaging material is peeled off together with the release material from the napkin upon opening, the release material for wing can be developed with the wing-shaped flap smoothly without resistance, and the release material can be easily peeled off from the absorbent article. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a partially broken development view of a sanitary napkin 1 according to the present invention, FIG. 2 is a rear view thereof, and is a view taken along the line III-III of FIG.

The sanitary napkin 1 includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, etc., a liquid-permeable front sheet 3 that allows permeation of menstrual blood, cages, etc. An absorbent body 4 made of cotton-like pulp or synthetic pulp intervening in the sheet, crepe paper 5 surrounding the absorbent body 4 for maintaining the shape and improving the diffusibility of the absorbent body 4, and longitudinally on both sides of the surface. It is comprised from the side nonwoven fabrics 6 and 6 formed along the direction. Around the absorber 4, at the upper and lower edge portions, the outer edge portions of the liquid-impervious back sheet 2 and the liquid-permeable surface sheet 3 are joined by an adhesive such as hot melt or an adhesive means such as heat seal. In addition, the liquid-impervious backsheet 2 and the side nonwoven fabric 6 that extend laterally from the absorbent body 4 at both side edges thereof are joined by an adhesive such as hot melt or an adhesive means such as heat seal. Has been. In the present specification, the flap portions at both side edges are referred to as “side outer peripheral flaps F _S ”.

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. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. On the other hand, on the upper surface of the liquid-permeable surface sheet 3, side embosses 7 and 7 are formed on both sides of the blood drainage corresponding site, respectively along the substantially longitudinal direction, and arcuate embossing 8 and 8 is formed.

  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. The water-absorbing polymer is mixed in the pulp constituting the absorber, for example, as granular powder. 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. 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.

  On the other hand, side nonwoven fabrics 6 and 6 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, W are formed by a part of the liquid-impervious back sheet 2 that extends sideways and also extends sideways.

  As the side nonwoven fabric 6, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of important functions. For example, if importance is placed on functions such as preventing permeation of menstrual blood or vaginal discharge, or enhancing the touch feeling, water repellent treatment coated with silicon, paraffin or alkylchromic chloride water repellent It is desirable to use a nonwoven fabric. Further, if importance is attached to the absorption of menstrual blood and the like 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 process of producing a synthetic fiber, , By treating with a metal salt such as stannic chloride, partially dissolving the surface to make it porous, and depositing metal hydroxides to swell or make the synthetic fiber porous, applying capillary action to make it hydrophilic It is desirable to use a hydrophilic treated non-woven fabric provided with.

  As shown in FIG. 2, the non-skin contact surface of the main body part in which the absorbent body 4 is interposed between the liquid-permeable top sheet 3 and the liquid-impervious back sheet 2 is for fixing to the underwear. A plurality of main body misalignment-preventing adhesive layers 9, 9,... In the illustrated example are formed by an appropriate coating pattern, and the main body misalignment-preventing adhesive layers 9, 9,. Covered by. Further, on the surface of the wing-shaped flaps W, W on the liquid-impervious back sheet 2 side, wings prevention adhesive layers 10, 10 are formed, and these wings prevention adhesive layers 10, 10 are The sheet is covered with a single wing release material 12 having a length that traverses in the width direction and extends outward from the ends of both wing-shaped flaps W. In addition, the release material 11 for the main body and the release material 12 for the wing are individually packaged to be described later so that they cannot be peeled off by a hot melt adhesive or the like in the region surrounded by the chain lines 13, 13... It is firmly fixed to 16 and integrated.

  As the pressure-sensitive adhesive that forms the anti-displacement pressure-sensitive adhesive layers 9 and 10, for example, a styrenic polymer, a tackifier, or a plasticizer whose main component is preferably used. Examples of the styrenic polymer include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, and styrene-isobutylene-styrene copolymers. It may be used or two or more polymer blends. Among these, a styrene-ethylene-butylene-styrene block copolymer is preferable in terms of good thermal stability. As the tackifier and plasticizer, those that are solid at room temperature can be preferably used. Examples of the tackifier include C5 petroleum resins, C9 petroleum resins, dicyclopentadiene petroleum resins, and rosin petroleum resins. Polyterpene resin, terpene phenol resin, etc., and examples of the plasticizer include monomer plasticizers such as trifresil phosphate, dibutyl phthalate, dioctyl phthalate, and polymer plasticizers such as vinyl polymers and polyesters. It is done.

  As the release materials 11 and 12, for example, a release treatment liquid such as a silicone resin, a fluorine resin, or a tetrafluoroethylene resin is applied to the contact surfaces with respect to the slip prevention adhesive layers 9 and 10. Alternatively, paper or plastic sheet that has been spray-coated and mold-released can be used. In this case, at least the wing release material 12 is made of a flexible plastic sheet so that the wing flaps W and W can be smoothly unfolded when the individual packaging material is peeled off from the individual packaging state. Is good. Moreover, it is also possible to use the sheet material which gave the mold release process to the nonwoven fabric. When using the said film and a nonwoven fabric, what embossed and processed in order to give a firmness can be used. Furthermore, it is also possible to use a sheet material having stretchability. In particular, when a sheet material having stretchability is used for the wing release material 12, the wing-shaped flaps W and W are easily developed by the elastic stretch force generated by the peeling.

In order to individually package the sanitary napkin 1 described above, as shown in FIG. 4, one wing-shaped flap W is a fold line RL set near the outer side of the side edge of the absorbent body 4 and side outer peripheral flaps. after folding together the wing release material 12 on the liquid-permeable surface sheet 3 side, including the F _S, the other wing-shaped flaps W to be set outside the vicinity of the absorbent body 4 side edges the folding lines RL, side so that folded liquid-permeable topsheet 3 side together with the wing release member 12 including the outer peripheral flap F _S.

In this case, if the wing-shaped flaps W, W are simply folded to the liquid-permeable surface sheet 3 side, the shape is not stable, and the wing-shaped flaps W, W are lifted or fluttered. And may cause entanglement. Therefore, in order to stabilize the operation, the wing-shaped flap W is held in a state of being folded together with the wing release material 12 on the liquid-permeable surface sheet 3 side. Specifically, the tip portions of the wing release material 12 folded to the liquid-permeable surface sheet 3 side overlap each other, and the wing release materials 12 are overlapped by the wing temporary fixing adhesive layer 14 at the overlapping portion. Temporary fixing is performed by adhering in a peelable manner. Note that the tips of the wing-shaped flaps W are not overlapped with each other. The overlap margin S of the wing release material 12 is 5 mm or more, preferably 7 mm or more, more preferably 10 mm or more in order to further stabilize the operation.

  As the wing temporary fixing pressure-sensitive adhesive layer 14, a hot melt adhesive can be suitably used in addition to the pressure-sensitive adhesive used in the misalignment-preventing pressure-sensitive adhesive layers 9 and 10. As this hot melt adhesive, for example, a hot melt adhesive containing 12-hydroxystearic acid and polybutene disclosed in JP-A-2005-290193 is particularly suitable. The hot melt adhesive is desirably applied intermittently in a dot shape or a spiral shape.

  In the napkin 1, when an individual sheet 16 described later is peeled off together with the release materials 11 and 12 from the napkin 1 at the time of opening, the release material 12 for wings is unfolded smoothly together with the wing-shaped flaps W and W, and peeled off. In order to allow the materials 11 and 12 to be easily peeled from the napkin 1, the front side fixing of the individual sheet 16 and the main body release material 11 from the front side of the napkin 1, that is, from the separation side of the individual sheet 16. The end A, the front shape line B of the wing release material 12, the front base position C of the wing-shaped flap W, and the front end position D of the wing temporary fixing adhesive layer 14 are arranged in this order. In this case, the front shape line B of the wing release material 12 is preferably separated from the front end D of the wing temporary fixing adhesive layer 14 by at least 5 mm (symbol KL in FIG. 2) to the front side. . The base position C of the wing-shaped flap W is determined on the basis of the fold line R when the shorts are mounted.

  It is desirable that the liquid-impermeable back sheet 2 and / or the wing release material 12 is subjected to an opacity treatment or printing. The opacifying treatment may be a treatment for forming a film by internally adding a pigment or filler such as calcium carbonate, titanium oxide, white carbon, clay, talc, or barium sulfate into a plastic. Printing may be simply by coloring or may be decorated with a pattern. By performing the opacity treatment or printing, the concealing property such as menstrual blood is enhanced when the used napkin 1 is wrapped and discarded.

  If the wing-shaped flaps W, W are folded together with the wing release material 12 on the surface side, the sanitary napkin 1 is individually mounted by the individual sheet 16.

  As shown in FIG. 6, the individual packaging method has a width that is narrower than the developed width of the napkin 1 (distance between the tips of the wing-shaped flaps W and W), and is smaller than the folded state of the wing-shaped flaps W and W. The individual sheet 16 having a predetermined length which is wide is used, and the napkin 1 is placed on the individual sheet 16 so that at least one short side 16b of the individual sheet 16 is positioned outside one of the front and rear end portions of the napkin 1. The individual sheet 16 and the main body release material 11 and / or the wing release material 12 are firmly fixed to each other in the regions 13, 13.

  After that, if the napkin rear end side is folded at the fold line (1) position, the napkin front end side is folded at the fold line (2) position, and as shown in FIG. The side edge portion 16a thus sealed is sealed by an appropriate sealing means such as emboss pressure bonding, heat fusion, adhesive, or the like alone or in combination. Moreover, the front-rear direction edge 16b of the individual packaging sheet 16 is preferably sealed with a tab tape 17 after being joined with an adhesive.

In the case of such an individual absorbent article, as shown in FIG. 8, when the napkin 1 is taken out from the individual bag and the individual sheet 16 is peeled off, the wing-shaped flaps W and W are separated from the back sheet by the wing release material 12. The wing-shaped flaps W, W that are pulled to the side and folded in the stomach are automatically deployed. At this time, from the front side of the napkin 1, that is, from the peeling side of the individual sheet 16, the front fixed end A of the individual sheet 16 and the main body release material 11, and the front shape line of the wing release material 12 B, the front side root position C of the wing-shaped flap W and the front end position D of the wing temporary fixing adhesive layer 14 are positioned in this order, and the front shape line B of the wing release material 12 is the wing temporary When the main body release material 11 is peeled off from the front side of the napkin 1 by separating it from the front side of the napkin 1 by separating at least 5 mm (sign KL dimension) forward from the front end D of the stop adhesive layer 14, Then, since the folds of the wing-shaped flap W are gradually released from the front side of the napkin 1 and the wing-shaped flap W is unfolded, it acts on the wing release material 12. Resistance force is small, smooth deployment is possible. Further, when the wing release material 12 is peeled from the wings-preventing pressure-sensitive adhesive 10, the wing-shaped flap W is gradually unfolded, so that it can be easily turned up from the wings-stopping adhesive 10. Can be peeled off.

  In addition, since the wing-shaped flaps W, W have some creases on the use surface side after the wing-shaped flaps W, W are deployed, the wing-shaped flaps W, W are on the back of the main body. No adhesion to the formed anti-displacement pressure-sensitive adhesive layers 9, 9. When the individual packaging sheet 16 is peeled off, the main body release material 11 is peeled off together with the wing release material 12, so that a complete one-step opening method can be realized.

  By the way, the present invention can be variously modified in addition to the above embodiments. Below, in order,

(1) In the above embodiment, as the wing-like flaps W, when folding the W topsheet 3 side, but so folded contain side outer peripheral flap F _S, shown in Figure 9, the wing-shaped flaps W , Only the W portion may be folded to the surface sheet 3 side. Wing-shaped flaps W, when folding the W topsheet 3 side, when folded contain side outer peripheral flap F _S, can expand without or According the base of the wing-shaped flaps upon opening, in FIG. 9 As shown in the figure, when only the wing-shaped flaps W, W are folded to the surface sheet 3 side, the base of the wing-shaped flap may be relied upon opening or wrinkles may occur. The region 18 including the base position may be embossed, or a reinforcing sheet such as paper may be interposed between the liquid-impervious back sheet 2 and the side nonwoven fabric 6 to impart stiffness. .

In (2) above example, wing-shaped flaps W, W is an outer vicinity of the absorber 4 side edges as a line, with the side periphery flaps F _S, it has been so folded liquid-permeable topsheet 3 side, an inner position of the absorption side edge as a line, with the side edge portion of the side outer peripheral flap F _S and the absorber 4 may be folded into a liquid-permeable topsheet 3 side. In this case, further downsizing can be achieved.

(3) In the above example, the sanitary napkin 1 in which the wing-shaped flaps W, W are formed is taken as an example, but the present invention is described in detail, but the present invention is a night-use sanitary garment in which a hip-hold wing-shaped flap is formed on the rear side. In the case of a napkin, the present invention can be similarly applied to the hip-hold wing-shaped flap.

(4) In the above example, the wing-shaped flaps W and W are formed by the side nonwoven fabric 6 and the liquid-impermeable back sheet 2, but the wing-shaped flap W may be formed by the side nonwoven fabric 6 alone. The wing-shaped flap W may be formed by the liquid-impermeable back sheet 2 alone.

It is a partial fracture development view of sanitary napkin 1 concerning the present invention. FIG. It is the III-III arrow directional view of FIG. It is a top view which shows the folding procedure of a wing-shaped flap. It is the cross-sectional view (VV arrow line view of FIG. 4). It is a perspective view which shows the individual packaging procedure. It is a perspective view which shows an individual packaging state. It is a perspective view which shows the opening procedure. It is a napkin top view which shows the other example of how to fold the wing-shaped flap W. It is an expanded view of the conventional sanitary napkin N. FIG. FIG. It is a top view which shows the folding procedure (the 1) of the conventional wing-shaped flaps W and W. FIG. It is a top view which shows the folding procedure (the 2) of the conventional wing-shaped flaps W and W. FIG.

DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid impervious back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Side nonwoven fabric, 9 ... Main body slip prevention adhesive layer, 10 ... Wing Displacement-adhesive adhesive layer, 11 ... release material for main body, 12 ... release material for wing, 14 ... temporary adhesive adhesive layer for wing, 16 ... individual packaging sheet, 17 ... tab tape, 18 ... including the base position of wing-shaped flap W Area, W ... Wing-shaped flap, F _S ... Side outer peripheral flap

Claims (4)

Wing-like flaps are formed on both sides of the body part where the absorbent body is interposed between the liquid-permeable top sheet and the liquid-impervious back sheet so that the crotch part of the underwear is fixed when worn. In absorbent articles,
A main body anti-slip adhesive layer is formed on the liquid-impervious back sheet side surface of the main body part, and a wing anti-slip adhesive layer is formed on the liquid-impervious back sheet side surface of the wing-shaped flap. ,
In the individually packaged product state, the main body anti-slip adhesive layer is covered with the main body release material, the anti-slip adhesive layer formed on the wing-shaped flap crosses in the width direction, and the tips of both wing-shaped flaps The wing release material and the main body release material are covered with a wing release material having a length extending outwardly, and the main body release material is disposed on the outer surface side of the liquid-impermeable back sheet. Disposed, and further in a layer relationship in which the wing release material is disposed on the outer surface side thereof,
The wing-shaped flap is folded together with the wing release material on the liquid-permeable surface sheet side, and the individual packaging material is fixed to the main body release material and / or the wing release material,
On the liquid-permeable surface sheet side, the wing-shaped flaps do not overlap each other, and the tip portions of the wing release material overlap each other, and the wing release materials are separated by the wing temporary fixing adhesive layer at the overlapping portion. From the front side of the absorbent article that can be joined, the front fixed end part of the individual packaging material and the release material for the main body, the front shape line along the absorbent article width direction of the release material for the wing, the wing shape It is located in the order of the front base of the flap and the front end of the wing temporary fixing adhesive layer, and the front shape line of the wing release adhesive layer is at least more than the front end of the wing temporary fixing adhesive layer. An absorbent article characterized by being spaced 5 mm or more forward.   The absorbent article according to claim 1, wherein the liquid-impermeable back sheet and / or the wing release material is subjected to an opacity treatment or printing.   The absorbent article according to any one of claims 1 and 2, wherein the wing-shaped flap is folded to the liquid-permeable surface sheet side together with the side part outer peripheral flap with the position near the outer side of the absorber side edge as a broken line.   The absorbent article according to any one of claims 1 to 3, wherein an embossing process is performed in a region including a base position of the wing-shaped flap, or a reinforcing sheet is interposed between the sheets.

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