JP5934504B2 - Absorbent articles - Google Patents

Description

  The present invention mainly relates to an individual absorbent article in which an absorbent article used for a sanitary napkin, a cage sheet, an incontinence pad, a medical pad, a toiletry, etc. is folded in the longitudinal direction and wrapped by a packaging sheet, The present invention relates to an individual absorbent article in which a user can arbitrarily select the presence / absence of a wing-shaped flap in one product so that the user can respond to various scenes.

  Conventionally, as an absorbent article such as a panty liner, sanitary napkin, incontinence pad, a liquid-impervious 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 In this case, an absorbent body made of paper cotton such as pulverized pulp is interposed therebetween.

  This type of absorbent article has so-called wings formed with wing-shaped flaps (wings) that are fixed so that the crotch portion of the underwear is wound around both sides of the main body portion, and the wing-shaped flaps ( It can be roughly divided into so-called no-wings where no wings are formed.

  As a winged absorbent article, in Patent Document 1 below, at least three or more sets of wing-shaped flaps arranged on the left and right sides of the main body portion are arranged along the longitudinal direction of the main body portion, and the product before use In the state, an absorbent article is disclosed in which all of the wing-shaped flaps are folded to the back sheet side, and in Patent Document 2 below, the wing is removably attached to the top film to be used by the user. A sanitary napkin is disclosed that remains folded until use until determined.

JP 2009-232950 A JP 2000-83997 A

  However, in the absorbent articles described in Patent Documents 1 and 2, it takes time and effort to pull the wing-shaped flap from the folded state during use.

  In addition, whether to use a winged or non-winged absorbent article depends on the user's preference, but in general, a winged user will not use a winged absorbent article because it is less likely to shift or twist. On the other hand, wingless users tend to use absorbent articles without wings because the wings are rubbed at the crotch and the act of folding the wings is troublesome. In addition, some users use wings to reduce the trouble of changing during the day, but at night, wings are used to suppress misalignment and misalignment. Some people use it without wings. Furthermore, when wearing a boxer type underwear with a wide crotch, it may be difficult to wear the wing-shaped flap, or depending on the clothes, it may not be desirable for the wing-shaped flap to go outside the underwear.

  Thus, there has been a demand for an absorbent article that can arbitrarily select the presence or absence of a wing-shaped flap in one product according to various lifestyles of users.

  Therefore, the main problem of the present invention is to cope with various scenes of the user, so that the user can arbitrarily select the presence or absence of wing-shaped flaps in one product when opening, and even when winged is selected An object of the present invention is to provide an individual absorbent article that saves the trouble of developing a flap.

In order to solve the above-mentioned problem, as the present invention according to claim 1, the crotch portion of the underwear is wound around each side portion of the main body portion where the absorbent body is interposed between the liquid-permeable top sheet and the back sheet. An absorptive article in which a wing-like flap that can be fixed in this way is formed, and a first misalignment adhesive layer is formed on the non-skin contact surface side of the back sheet, and the first misalignment adhesive layer A release sheet in which a second misalignment-preventing adhesive layer is formed on the non-skin contact surface side, and a packaging sheet for individually packaging the absorbent article together with the release sheet. the state in which the first displacement preventing pressure-sensitive adhesive layer is covered with the release sheet, with tatami Murrell folding backsheet side with the wing-like flaps said release sheet, wherein the absorbent article is the release sheet Both mat folded longitudinally rare an individually packaged absorbent article packaged by the package sheet,
The adhesive strength between the second misalignment-adhering adhesive layer and the packaging sheet side is set larger than the adhesive strength between the first misalignment-adhering adhesive layer and the release sheet,
The release sheet is formed at one end in the longitudinal direction of the absorbent article with a joining portion joined to the back sheet side, and the joining portion is joined to the back sheet side so as not to be peeled off. A tearable absorbent article is provided in which a tear line that allows the release sheet to be separated from the absorbent article is formed in the vicinity of the part .

In the first aspect of the present invention, as individual absorbent articles, wing-shaped flaps are formed on both side portions of the main body portion, and a first misalignment adhesive layer is formed on the non-skin contact surface side. An absorbent article, a release sheet that covers the first anti-slip adhesive layer so as to be peelable, and a second anti-slip adhesive layer formed on the non-skin contact surface side, and the absorbent article together with the release sheet It is mainly composed of packaging sheets to be individually packaged. Such individually packaged absorbent articles are KoSoji, in a state in which the first displacement preventing pressure-sensitive adhesive layer is covered by a release sheet, with tatami Murrell folding backsheet side with the wing-shaped flaps release sheet, wherein said absorbent tatami folded longitudinally rare sexually article together with the release sheet, it is packaged by the package sheet.

In the individual absorbent article according to the present invention , the adhesive strength between the second misalignment-adhesive adhesive layer and the packaging sheet side is greater than the adhesive strength between the first misalignment-adhesive adhesive layer and the release sheet. If it is set, the adhesive strength of each adhesive part is adjusted so that the release sheet is easily peeled off together with the packaging sheet when the packaging sheet is peeled off from the other end side when it is desired to take out as a winged absorbent article. ing.

In yet individually packaged absorbent article according to the present invention, the release sheet at one end in the longitudinal direction of the absorbent article, together with the joint portion which is joined to the backsheet side is formed, the junction the A tear line is formed on the back sheet side so as not to be peeled off, and is capable of separating the release sheet from the absorbent article in the vicinity of the joint.

Therefore, when it is desired to take out as a wingless absorbent article , when the packaging sheet is peeled off from one end side in the longitudinal direction of the absorbent article, the peeling sheet is not peeled off together with the packaging sheet and the absorbent article side In order to maintain the state of being securely joined to each other, the joining portion is joined to the back sheet side so as not to be peeled off. On the other hand, when it is desired to take out the absorbent article with wings, the release sheet must be finally removed from the absorbent article side, so that the release sheet can be separated from the absorbent article in the vicinity of the joint. A line is provided.

By these configurations, upon opening of the individually packaged absorbent article, the user at the time of unsealing the presence of the wing-shaped flaps by a direction peeling the packaging sheet is adapted to be arbitrarily selected. Specifically, when a wing-shaped flap is desired to be used as a winged absorbent article developed on both sides, the release sheet is pulled together with the packaging sheet by opening the packaging sheet from the other end side in the longitudinal direction of the absorbent article. As a result, the wing-shaped flaps folded to the back sheet side are automatically spread on both sides, and a winged absorbent article can be obtained. In this case, the first slip-stopping adhesive layer formed on the non-skin contact surface side of the back sheet of the absorbent article is exposed and fixed to the underwear.

  On the other hand, when it is desired to use as a wingless absorbent article in which the wing-shaped flap is not expanded on both sides, the release sheet is opened at one end side in the longitudinal direction of the absorbent article so that the release sheet is joined to the back sheet side. Since the release sheet remains on the absorbent article side and only the packaging sheet is peeled off as a result, the wing-shaped flap is left folded on the back sheet side. It will be obtained. In this case, the second slip-stopping adhesive layer formed on the non-skin contact surface side of the release sheet is exposed and fixed to the underwear.

  As described above, in the individual absorbent article according to the present invention, whether the user wants to use with wings or uses without wings, the user can determine whether or not there is a wing-shaped flap with one product at the time of opening. Can be selected arbitrarily. Further, even when the wing-shaped flap is selected, the wing-shaped flap is automatically unfolded on both sides when the packaging sheet is peeled off, so that the trouble of unfolding the wing-shaped flap can be saved.

As this invention which concerns on Claim 2 , the said peeling sheet is formed in the part which covers the adhesive layer formed in the main-body part of the said absorbent article among the said 1st slip prevention adhesive layers, and the said wing-shaped flap. a portion covering the PSA layer is formed individually by separate sheet materials, or are joined in a stacked portion of the Hisashi Naka portion, either integrally formed by a single sheet material, separate formed individually by the sheet material, the wing-like flaps individually packaged absorbent article of claim 1 Symbol placement are joined by folding or the product layer portion on the back sheet side is provided.

In the invention according to the second aspect, the arrangement form of the release sheet is defined, and the portion of the first misalignment-adhering adhesive layer that covers the adhesive layer formed on the main body portion of the absorbent article, and the wing or a portion covering the pressure-sensitive adhesive layer formed on Jo flap (1) is formed individually by separate two sheet materials of the body portion and wing portions are joined in a stacked portion of the Hisashi Naka portion, (2) It is formed integrally by one sheet material, or (3) It is formed individually by three separate sheet materials of the main body part and the wing parts on both sides, and the wing-shaped flap is on the back sheet side are joined by folding Mareta laminated part, it can take any arranged form of.

As the present invention according to claim 3 , the second misalignment-adhering adhesive layer is formed in a region that does not overlap the wing-shaped flap in a state where the wing-shaped flap is folded to the back sheet side . 2. The individually absorbent article according to any one of 2 is provided.

In the invention of claim 3 above, when the wing-shaped flap is folded, the area that does not overlap the wing-shaped flap in a state where the wing-shaped flap is folded to the back sheet side so that the adhesive layer does not adhere to the wing-shaped flap. The second misalignment-preventing pressure-sensitive adhesive layer is formed.

As the present invention according to claim 4 , the packaging sheet is formed of a material that can be peeled off from the second anti-slipping adhesive layer, or a release paper that can be peeled off from the second anti-slipping adhesive layer. The individual absorbent article according to any one of claims 1 to 3, which is fixed, is provided.

In the invention of claim 4 , the release sheet that can be peeled off from the second anti-slipping adhesive layer is used as the packaging sheet, even if it is formed of a material that can be peeled off from the second anti-slipping adhesive layer. Even if it is fixed, it can be used in any case.

  As described above in detail, according to the present invention, the user can arbitrarily select the presence or absence of a wing-shaped flap in one product, and also saves the trouble of deploying the wing-shaped flap even when a wing is selected. Will be able to.

FIG. 3 is a partially broken development view showing the skin contact surface side of the sanitary napkin 1. It is an expanded view which shows the non-skin contact surface side of the sanitary napkin 1 which has arrange | positioned the peeling sheet. It is the III-III arrow directional view of FIG. It is a top view which shows the individual packaging point (the 1). It is a perspective view which shows the individual packaging procedure (the 2). It is a perspective view which shows the individual packaging procedure (the 3). It is a perspective view which shows the individual packaging procedure (the 4). It is a perspective view which shows the opening procedure (the 1) in the case of using as a wing. It is a perspective view which shows the opening procedure (the 2) in the case of using as a wing. It is a perspective view which shows the opening procedure in the case of using as a wingless. It is a figure which shows the example of a form of the peeling sheet. It is a figure which shows the opening procedure at the time of providing the knob 21 for opening. It is longitudinal direction sectional drawing of the expansion | deployment state of individual packaging absorbent article.

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

  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, and the like quickly, and a gap between the two sheets 2 and 3. An absorbent body 4 made of intervening cotton pulp or synthetic pulp, crepe paper 5 surrounding the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving diffusibility, and the liquid-permeable surface sheet 3 And a second sheet 6 made of a porous plastic film or a nonwoven fabric sheet having a large number of apertures formed on the lower surface side of the liquid-permeable surface sheet 3 and both sides of the surface in the longitudinal direction. It is comprised from the side nonwoven fabrics 7 and 7 formed along. 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 back sheet 2 and the side nonwoven fabric 7 that extend laterally from the absorbent body 4 at both side edges thereof are bonded to each other by an adhesive such as hot melt or an adhesive means such as heat seal. The wing-like flaps W and W projecting sideways are formed by the laminated sheet portion formed by the liquid-impermeable back sheet 2 and the side nonwoven fabric 7.

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, while from the upper surface side of the liquid-permeable surface sheet 3, A pressing groove 8 that is elongated in the longitudinal direction of the napkin 1 and closes in the circumferential direction is formed so as to surround the site for blood discharge.

  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.

  The absorbent body 4 may be mixed with synthetic fibers. 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 hydrophilic second sheet 6 disposed between the liquid-permeable surface sheet 3 and the absorbent body 4 only needs to be hydrophilic to the body fluid. Specifically, by using recycled fibers such as rayon and cupra, natural fibers such as cotton, the material itself has hydrophilicity, or synthesis of olefins such as polyethylene or polypropylene, polyesters, polyamides, etc. The fiber which surface-treated with the hydrophilizing agent and provided the hydrophilic property can be used.

  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-shaped flaps W, W that extend laterally and can be fixed by a part of the liquid-impervious back sheet 2 that also extends laterally so that the crotch portion of the underwear can be caught when worn. Is formed.

  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 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, on the non-skin contact surface side (outer surface side) of the liquid-impermeable back sheet 2, there is an absorbent body between the liquid-permeable surface sheet 3 and the liquid-impermeable back sheet 2. In the illustrated example, there are a plurality of main body misalignment-adhering adhesive layers 9, 9... Formed in a plurality of strips by an appropriate application pattern for fixing to the underwear, and in the illustrated example along the napkin longitudinal direction. In addition, when the wing-shaped flaps W and W are folded back so that the crotch portion of the underwear is wrapped around the wing-shaped flaps W and W, respectively, the wings-stopping adhesive layers 10 and 10 are fixed by an appropriate application pattern for fixing to the underwear. The first misalignment adhesive layer 11 formed on the non-skin contact surface side of the liquid-impermeable back sheet 2 is formed by the main body misalignment adhesive layer 9 and the wing misalignment adhesive layer 10. Has been .

  The first misalignment-adhering adhesive layer 11 is releasably covered with a release sheet 12. In the example shown in FIG. 2, the release sheet 12 traverses in the width direction covering the release sheet 12 a for the main body that covers the main body anti-adhesive adhesive layers 9, 9, and the wing anti-adhesive adhesive layers 10, 10 on both sides. The wing release sheet 12b is firmly laminated so that it cannot be peeled off by a hot melt adhesive or the like in the region surrounded by the chain line 14 in the laminated portion of both sheets 12a and 12b in the central part of the napkin width direction. Fixed and integrated. The release sheet 12a for the main body and the release sheet 12b for the wing are each formed to have a size that extends slightly outward from the formation region of the main-layer misalignment-adhering adhesive layers 9, 9. Yes. At both sides of the wing release sheet 12b, when the wing-shaped flap W is folded to the back sheet 2 side during individual packaging, an adhesive region such as hot melt is temporarily attached at the laminated portion with the main body release sheet 12a. 22 is provided.

  On the non-skin contact surface side (outer surface side) of the release sheet 12, a napkin width direction is provided in each region on the front side and the rear side of the sanitary napkin 1 in the illustrated example by an appropriate application pattern for fixing to the underwear. The second slip-stopping pressure-sensitive adhesive layers 13, 13...

  As the pressure-sensitive adhesive forming the first displacement-preventing pressure-sensitive adhesive layer 11 and the second displacement-preventing pressure-sensitive adhesive layer 13, for example, a styrene-based polymer, a tackifier, or a plasticizer mainly used is preferably used. Is done. Examples of the styrenic polymer include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, styrene-isobutylene-styrene copolymers, styrene-butadiene-styrene block copolymers, and the like. However, only one of these may be used, or two or more polymer blends may be used. Among these, a styrene-butadiene-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 sheet 12, for example, a release treatment liquid such as a silicone resin, a fluorine resin, or a tetrafluoroethylene resin is applied to or sprayed on the contact surface with the first misalignment adhesive layer 11. A sheet made of plastic or paper that has been coated and released may be used. As will be described in detail later, when using as a napkin without wings, use a soft material plastic film that does not stick to the underwear when the release sheet 12 is attached to the napkin. Is preferred. In this case, at least for the wing release sheet 12b, a plastic sheet rich in flexibility is used 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. It should be noted that the film itself or the nonwoven fabric itself may be used as long as it does not cause a substantial decrease in the adhesive force without special release treatment.

  The sanitary napkin 1 is individually packaged with a release sheet 12 and a packaging sheet 15 (see FIG. 5). As shown in FIG. 5, the packaging sheet 15 is formed so that the longitudinal dimension is slightly longer than the entire length dimension of the napkin 1, so that the extra length is secured on the front side and the rear side, and the short dimension is that of the napkin 1. The wing-shaped flaps W, W are slightly longer than the width dimension of the folded back side sheet. In terms of material, paper, plastic film, or non-woven fabric can be used, but it is preferable to use a thin and highly flexible non-woven fabric. The release sheet 16 is provided on the contact surface of the packaging sheet 15 on the napkin 1 side at least in a region corresponding to the formation range of the second misalignment adhesive layers 13, 13. The agent layer 13 is releasably covered. Even if the release paper 16 is not provided, a film may be used as long as it does not cause a substantial decrease in adhesive force even if a release treatment similar to that of the release sheet 12 is performed or a special treatment is not performed. It may be a non-woven fabric itself.

  As shown in FIG. 2, the release sheet 12 has a joint 18 that is joined to the liquid-impervious back sheet 2 by a hot melt adhesive or the like along the longitudinal front edge of the sanitary napkin 1. Is formed.

  In addition, as shown in FIG. 2, the joining portion 18 is fixed to the liquid-impermeable back sheet 2 side so as not to be peeled off, and the peeling is performed in the vicinity of the joining portion 18 leaving a forming portion of the joining portion 18. A tear line 19 capable of separating the sheet 12 (main body release sheet 12a) from the sanitary napkin 1 is formed across the napkin width direction. As the tear line 19, a perforation is usually adopted, but it is sufficient that the release sheet 12 has a structure that can be easily torn. As an example, a method of making a score line in the thickness direction with respect to the release sheet 12 can be exemplified.

The joint 18 is preferably formed on the front side of the sanitary napkin 1. This is because, when the joining portion 18 is fixed to the back sheet 2 side so as not to be peeled off, when the napkin 1 after use is removed from the underwear, the front edge of the napkin 1 is generally picked and peeled off from the front side. the release sheet 12 when used as a bladeless napkin consider is that as not remain in the undergarment.

[Individual packaging procedure]
First, as shown in FIG. 4, after the disposing sheet 12 is arranged on the sanitary napkin 1, the wing-shaped flaps W and W are folded back along the wrapping lines RL and RL together with the separating sheet 12. Fold it back to the sheet 2 side. In a state where the wing-shaped flaps W, W are folded back, preferably the release sheet 12 is joined to each other by a hot melt adhesive or the like at a position where the wing portion and the main body portion of the release sheet 12 are overlapped. W and W are easy to expand.

  Next, as shown in FIG. 5, the sanitary napkin 1 in which the wing-shaped flaps W and W are folded is disposed on the packaging sheet 15 to which the release paper 16 is fixed. In the actual manufacturing process, the second slip prevention adhesive layers 13 formed on the non-skin contact surface side of the release sheet 12 are applied onto the release paper 16 and the sanitary napkin 1 is disposed. Sometimes it is transferred to the release sheet 12 side.

  Here, the sanitary napkin 1 is disposed in the front-rear direction of the sanitary napkin 1 with respect to the packaging sheet 15 such that the front-rear direction edge 15b side (the end side of the side sealed with the tag tape 20) of the packaging sheet 15 described later. The end 15c side of the packaging sheet 15 on the opposite side is arranged as the front side of the sanitary napkin 1, that is, the side on which the joint 18 is formed.

  Thereafter, as shown in FIG. 6, if the napkin rear end side is folded at the napkin center portion at the fold line X1 position along the napkin width direction, the napkin front end at the fold line X2 position along the napkin width direction. As shown in FIG. 7, the side edge portions 15a, 15a of the packaging sheet 15 are opened by appropriate sealing means such as embossing, heat fusion, adhesive, etc. Block alone or in combination. Moreover, the front-rear direction edge 15b of the packaging sheet 15 is preferably sealed with the tag tape 20 after being joined with an adhesive. The individually packaged sanitary napkin N is obtained by the above procedure.

[Opening Procedure]
Next, the procedure for opening the individually packaged sanitary napkin N will be described. In the individual sanitary napkin N, the user can arbitrarily select the presence or absence of the wing-shaped flaps W and W according to the direction in which the packaging sheet 15 is peeled off from the sanitary napkin 1.

  First, the case where it is desired to use as a winged napkin with the wing-shaped flaps W, W deployed on both sides will be described. From the state where the tag tape 20 of the individual sanitary napkin N shown in FIG. 7 is removed and the folded state of the rear side of the napkin is expanded, the packaging sheet 15 is pulled from the rear end of the napkin 1 as shown in FIG. When peeled off, the release sheet 12 is peeled off together with the packaging sheet 15.

  When the packaging sheet 15 is peeled off as it is, as shown in FIG. 9, the folded state of the wing-shaped flaps W, W is released as the release sheet 12 is peeled off, and the wing-shaped flaps W, W are automatically turned on. Will be deployed on both sides.

  Furthermore, when the packaging sheet 15 continues to be peeled off and reaches the front end of the release sheet 12, when the joining portion 18 is joined to the back sheet 2 side so as not to be peeled off, the joining portion 18 prevents the release sheet 12 from being peeled off. However, since the tear line 19 is formed on the near side, the sanitary napkin 1 can be taken out by tearing the release sheet 12 from the tear line 19. In this case, the first slip-stopping adhesive layers 11 formed on the non-skin contact surface side of the back sheet 2 of the sanitary napkin 1 are exposed and fixed to the underwear.

  Thus, by peeling off the packaging sheet 15 from the rear side of the sanitary napkin 1, a winged napkin in which wing-like flaps W, W are developed on both side portions of the main body portion can be obtained.

  On the other hand, when it is desired to use the wing-shaped flaps W, W as a wingless napkin that is not unfolded on both sides, as shown in FIG. The packaging sheet 15 is peeled off from the front side of the napkin 1.

  At this time, since the front end of the release sheet 12 is joined to the back sheet side by the joining portion 18, only the packaging sheet 15 and the release paper 16 are peeled off, and the release sheet 12 is disposed on the sanitary napkin 1 side. It remains in the state. In this case, the second misalignment-preventing adhesive layer 13 formed on the non-skin contact surface side of the release sheet 12 is exposed and fixed to the underwear.

  Thus, by peeling off the packaging sheet 15 from the front side of the sanitary napkin 1, a wingless napkin with the wing-shaped flaps W, W folded can be obtained.

[Other forms]
The release sheet 12 can be formed in various forms as shown in FIG. In FIG. 11 (A), a substantially cruciform shape in which a release sheet that protrudes on both sides of the release sheet covering the main body anti-adhesive adhesive layers 9, 9. Is formed. In this embodiment, the release sheet 12 that has been cut into a cross shape in advance is disposed on the sanitary napkin 1.

  In FIG. 11 (B), in the manufacturing process of the sanitary napkin 1, the continuous release sheet 12 is fed out and arranged along the outer contour of the sanitary napkin 1 in the state of being arranged on the outer surface side of the back sheet 2. By cutting together with the release sheet 12, the sanitary napkin 1 is formed in substantially the same shape as the outline.

  In FIG. 11 (C), it is composed of a main body release sheet 12a covering the main body anti-slipping adhesive layers 9, 9 ..., and a wing release sheet 12c, 12c separately covering the wing anti-slip adhesive layers 10, 10. Three separate release sheets are respectively arranged, and the laminated portions of the wing release sheets 12c and 12c and the main body release sheet 12a are joined in a state where the wing-shaped flaps W and W are folded back to the back sheet 2 side. It is integrated by.

  As shown in FIG. 4, the second misalignment-preventing adhesive layers 13, 13... Are formed in a region that does not overlap with the wing-shaped flaps W, W in a state where the wing-shaped flaps W, W are folded to the back sheet 2 side. It is desirable to do. Thereby, when using as a winged napkin, since it becomes difficult to join the 2nd slip prevention adhesive layer 13 and the wing-like flap W, it becomes easy to open.

  Moreover, it is preferable to set so that the adhesive strength between the second misalignment-adhering adhesive layer 13 and the release paper 16 is greater than the adhesive strength between the first misalignment-adhering adhesive layer 11 and the release sheet 12. Thereby, when using as a winged napkin, when peeling off the packaging sheet 15 from a napkin rear side end, the peeling sheet 12 becomes easy to peel off with the packaging sheet 15.

  As shown in FIG. 12, when used as a wingless napkin, an opening knob 21 can be provided on the edge 15 c of the packaging sheet 15 in order to facilitate the peeling of the packaging sheet 15 from the front end of the napkin. In the illustrated example, a tape-shaped opening knob 21 is joined to the packaging sheet 15, but the opening knob 21 is not attached to the packaging sheet 15 so that a part of the rear end of the packaging sheet 15 extends outward. It can also be formed by cutting.

  As shown in FIG. 13 (A), the joining portion 18 is provided with a folded portion 12r in which the rear end portion of the release sheet 12 is folded inward, and the folded portion 12r is preferably adhered to the back sheet 2 side. . Thereby, it can adhere | attach with the back surface sheet 2 in the surface which has not performed the peeling process. Moreover, as shown in FIG. 13B, the rear edge of the release sheet 12 can be extended to the napkin periphery and bonded together with the heat seal of the napkin periphery.

  Further, the opening direction with wings and without wings is provided on the packaging sheet 15, the opening knob 21 and / or the tag tape 20 so that the presence or absence of the wing-shaped flap W can be easily identified by the opening direction of the packaging sheet 15 at the time of opening. Can be displayed.

  Further, in order to ensure that the release sheet 12 is peeled off together with the packaging sheet 15 when taking out as a winged napkin, a second joining portion (to be joined to the packaging sheet 15 side) at the rear end of the release sheet 12 ( (Not shown). This 2nd junction part can also be made into the junction part joined to the packaging sheet 15 side so that peeling is impossible, and in this case, the tear sheet 12 can be separated from the packaging sheet 15 in the vicinity of the second junction part. When the release sheet 12 is separated from the packaging sheet 15 when used as a wingless napkin by forming a line (not shown), the release sheet 12 is removed from the tear line formed in the vicinity of the second joint. It can be used by tearing.

  In the above embodiment, the joint 18 is provided on the front side of the sanitary napkin 1, but it may be provided on the rear side. Moreover, although arrange | positioned so that the front-and-rear end edge 15b side of the unwrapping side of the packaging sheet 15 may become the rear side of the sanitary napkin 1, the front and rear may be reversed.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impervious back sheet, 3 ... Impervious surface sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Second sheet, 7 ... Side nonwoven fabric, 8 ... Squeeze groove, 9 ... Main body anti-adhesive layer, 10 ... Wings anti-adhesive layer, 11 ... First anti-adhesive layer, 12 ... Release sheet, 13 ... Second anti-adhesive layer, 15 ... Packaging sheet, 16 ... Release paper 18 ... Joint portion, 19 ... Tear line, 20 ... Tag tape, 21 ... Opening knob, W ... Wing flap

Claims (4)

A wing-shaped flap that can be fixed by winding the crotch part of the underwear on both sides of the main body part where the absorbent body is interposed between the liquid-permeable top sheet and the back sheet, The absorbent article in which the first misalignment adhesive layer is formed on the non-skin contact surface side of the back sheet and the first misalignment adhesive layer are releasably covered and second on the non-skin contact surface side. The release sheet is provided with a release-preventing adhesive layer and a packaging sheet for individually packaging the absorbent article together with the release sheet, and the first release-preventing adhesive layer is covered with the release sheet during individual packaging. in the state, the tatami Murrell folding backsheet side with the wing-like flaps said release sheet, wherein the absorbent article is the release sheet with tatami folded longitudinally rare by the wrapping sheet A instrumentation have been individually packaged absorbent article,
The adhesive strength between the second misalignment-adhering adhesive layer and the packaging sheet side is set larger than the adhesive strength between the first misalignment-adhering adhesive layer and the release sheet,
The release sheet is formed at one end in the longitudinal direction of the absorbent article with a joining portion joined to the back sheet side, and the joining portion is joined to the back sheet side so as not to be peeled off. A tearable absorbent article characterized in that a tear line capable of separating the release sheet from the absorbent article is formed in the vicinity of the part . The release sheet includes a portion covering the pressure-sensitive adhesive layer formed on the main body portion of the absorbent article, and a portion covering the pressure-sensitive adhesive layer formed on the wing-shaped flap in the first misalignment-adhesive layer. but they are formed individually by separate sheet materials, or are joined in a stacked portion of the Hisashi Naka portion, either integrally formed by a single sheet material, formed individually by separate sheet materials, individually packaged absorbent article of claim 1 Symbol mounting wing-shaped flaps are joined tatami or a product layer portion folded on the back sheet side. 3. The individual absorption according to claim 1 , wherein the second misalignment-preventing pressure-sensitive adhesive layer is formed in a region that does not overlap the wing-shaped flap in a state where the wing-shaped flap is folded toward the back sheet side. Sex goods. The package sheet is either formed by peelable material to said second displacement preventing pressure-sensitive adhesive layer, wherein a peelable release paper to said second displacement preventing pressure-sensitive adhesive layer is affixed to claim 1-3 The individually absorbent article according to any one of the above.

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