JP5567965B2 - Individual absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article individually packaged with a packaging sheet.

  Conventionally, for example, sanitary napkins have been provided to the market in a state where the manufactured napkins are tri-folded or quadruple-folded and individually wrapped in individual bags made of various film sheets. When the user uses this napkin, the individual bag is opened, the napkin is taken out from the inside, and the non-use surface is adhered to the inner surface of shorts or the like.

  For example, in order to open the tri-folded napkin 50, as shown in FIG. 9, after picking up the tab tape 53 and pulling it in the opening direction, opening the back folded surface (FIG. 10), Subsequently, the other side edge of the pre-folded surface is picked and opened in the opening direction, and the folding of the napkin 51 in the longitudinal direction is released. Thereafter, the individual bag 52 is peeled off from the napkin 51 so that the napkin 51 is taken out.

  In recent years, various individual packaging structures for easily taking out napkins have been developed. For example, in Patent Document 1 below, the front and rear release sheets are joined to the adhesive formed on the back surface of the sanitary napkin with a predetermined width from the front and rear ends so that the middle part is exposed, and the exposed central part In the absorption, a central release sheet, which is a means for covering the adhesive, is joined, and the central release sheet is joined to the packaging sheet and is configured to be peeled off simultaneously when the sanitary napkin is taken out from the packaging sheet. An individual packaging structure for a functional article is disclosed.

  Moreover, in the following patent document 2, in a state where the wing-shaped flap is folded in the stomach, the packaging sheet has folded sheet portions folded to the inner surface side on both side portions, and both sides of the absorbent article from the liquid-permeable surface sheet side. Each part is surrounded so as to be wound, and the folded edges are brought close to each other or joined at approximately the center in the width direction of the outer surface of the back sheet, thereby having an open end along the longitudinal direction of the absorbent article. An individually packaged structure of an absorbent article is disclosed in which one half of the anti-slipping adhesive layer is covered with a sheet portion and the wings anti-sizing adhesive layer on one side is covered. With such a configuration, it is possible to easily develop a folded wing-shaped flap by simply pulling the packaging sheet from the opened end to both sides, to realize a one-step wearing method, and to reduce the labor of wearing.

Japanese Patent Laid-Open No. 2006-230619 JP 2008-619630 A

  However, the individual packaging structure of the absorbent article described in Patent Document 1 is configured such that when the sanitary napkin is taken out from the packaging sheet, the central release sheet is configured to be peeled off at the same time. A process of opening was required, and it took time and effort to open the same as the conventional one.

  Moreover, in the individual packaging structure of the absorbent article described in Patent Document 2, the wing-shaped flap that is folded in the abdomen simply unfolds from the unsealed end by pulling the packaging sheet to both sides, so (1) One-step mounting method can be realized. , Can reduce the labor of wearing, (2) can be attached to the underwear while the use surface side of the absorbent article is always covered with the packaging sheet during the installation work, the hand does not touch the use surface side of the absorbent article, hygiene The effect of maintaining the state is exhibited. However, as a pre-process, a process of releasing a plurality of folds in the longitudinal direction is required, and an individual packaging structure that can be opened more easily has been desired.

  Accordingly, a main problem of the present invention is to provide an individually absorbent article that can be easily opened and can be directly attached to underwear.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorption body is interposed between a liquid-permeable top sheet and a back sheet, and an absorption layer is formed on the outer surface of the back sheet. A self-absorbing article comprising an adhesive article, a release sheet that releasably covers the anti-displacement adhesive layer, and a packaging sheet for individually mounting the absorbent article and the release sheet,
The absorbent article is on the surface of the liquid-permeable surface sheet side together with the release sheet at a position on the other end side from the one end in the longitudinal direction of the absorbent article in a state where the anti-slip adhesive layer is covered with the release sheet. Folded in a Z-shape in the longitudinal direction by a first folded portion that is folded and a second folded portion that is continuous with the first folded portion and is folded on the surface on the back sheet side together with the release sheet at the other end side position. In this Z-shaped folded state, it is individually packaged by the packaging sheet,
The absorbent article is formed such that the one end protrudes outward from the second folded portion and the other end protrudes outward from the first folded portion, and the release sheet is formed from the absorbent sheet. An end on one end side of the article is joined to the packaging sheet so as not to be peeled off, and an end on the other end side of the absorbent article is joined to the release sheet facing the face so as not to peel off,
A packaged absorbent article is provided in which the packaging sheet portion corresponding to one end of the absorbent article and one side of the other end is separable.

  In the first aspect of the present invention, the operation from the opening of the individual absorbent article to the attachment to the underwear of the absorbent article is one end formed to protrude outward from the second folded portion of the absorbent article. And the other end formed so that it protrudes outside the said 1st folding | turning part of the said absorbent article is pinched from the outer side of the said packaging sheet, and a tensile force is added. Then, since the packaging sheet portion corresponding to one side of the absorbent article and one side of the other end is separable, a part of the packaging sheet is separated and opened, and the release sheet absorbs the absorption sheet. Since the end on one end side of the absorbent article is bonded to the packaging sheet so as not to be peeled and the end on the other end side of the absorbent article is bonded to the facing release sheet so as not to peel, the absorbent article Is developed with peeling of the release sheet. And the part of the slip prevention adhesive layer from which the release sheet was peeled off as it is is attached to the underwear.

  In this way, in the present invention, in a series of operations from opening the individual absorbent article, developing the absorbent article, peeling the release sheet, and attaching to the underwear, it is possible to carry out at once without changing the product, An individual absorbent article that can be easily opened and can be directly attached to the underwear can be provided.

  As the present invention according to claim 2, the protrusion margins of the one end and the other end of the absorbent article are each formed in a dimension of 8 to 30 mm outside the second folded portion or the first folded portion. 1 is provided.

  In the second aspect of the present invention, in order to secure a sufficient picking allowance at the time of opening, the protruding margins of the one end and the other end of the absorbent article are respectively set to 8 outside the second folded portion or the first folded portion. It is formed with a dimension of ˜30 mm.

  As the present invention according to claim 3, the packaging sheet has a perforation, so that the packaging sheet portion corresponding to one side of the absorbent article and one side of the other end can be separated. Item 2. An individually absorbent article according to any one of Items 1 and 2.

  As the present invention according to claim 4, the packaging sheet is provided with a separate sheet so that the packaging sheet portion corresponding to one end of the absorbent article and the other end of the absorbent article can be separated. An individually absorbent article according to any one of claims 1 and 2 is provided.

  The invention described in claims 3 and 4 defines a specific configuration for enabling separation of the packaging sheet portion corresponding to one side of the absorbent article and one side of the other end, and claim 3. In the invention described, perforations are formed, and in the invention described in claim 4, a separate sheet is provided.

  As this invention which concerns on Claim 5, the said peeling sheet is formed with the raw material which has a stretching property at least in the longitudinal direction of the said absorbent article, and is covered with the said slip prevention adhesive layer in the extended state. 4. The individually packaged absorbent article according to any one of 4 is provided.

  In the invention of claim 5, as the release sheet, a release sheet formed of a material having elasticity in the longitudinal direction of the absorbent article is used. By the shrinking action of the release sheet, the release from the anti-displacement pressure-sensitive adhesive layer becomes smooth, and the opening becomes easier.

  As described above in detail, according to the present invention, it is possible to provide an individually absorbent article that can be easily opened and attached to the underwear as it is.

It is a partially broken expanded view which shows the state which attached the peeling sheet 10 to the sanitary napkin 1 which concerns on this invention. It is the II-II arrow directional view. It is a top view which shows individual packaging procedure (the 1). It is a top view which shows individual packaging procedure (the 2). It is a top view which shows individual packaging procedure (the 3). It is a top view which shows individual packaging procedure (the 4). It is a perspective view which shows individual packaging procedure (the 5). It is longitudinal direction sectional drawing of the sanitary napkin 1 which shows an opening procedure. It is a perspective view which shows the opening procedure (the 1) of the conventional individual packaging napkin 50. FIG. It is a perspective view which shows the opening procedure (the 2) of the conventional individual packaging napkin 50. FIG.

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

[Basic structure of individually packaged sanitary napkin N]
In the individual sanitary napkin N according to the present invention, the absorbent body 4 is interposed between the liquid-permeable top sheet 3 and the liquid-impervious back sheet 2, and the adhesive layer 9 for preventing slippage is formed on the outer surface of the back sheet 2. Is formed of a sanitary napkin 1 on which is formed, a release sheet 10 that releasably covers the anti-displacement adhesive layer 9, and a packaging sheet 11 that individually mounts the sanitary napkin 1 and the release sheet 10 ( (See FIG. 7).

  Hereinafter, the structure of the individually packaged sanitary napkin N will be described in detail.

(Sanitary napkin 1)
As shown in FIGS. 1 and 2, the sanitary napkin 1 according to the present invention has a liquid-impervious back sheet 2 made of a polyethylene sheet and the like, and a liquid-permeable surface that allows permeation of blood or vaginal discharge quickly. Sheet 3, absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between both sheets 2, 3, encapsulating sheet 5 that preferably surrounds the absorbent body 4, and both sides on the surface side Are mainly composed of side nonwoven fabrics 7, 7 formed along the longitudinal direction.

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, a porous plastic sheet, or the like is used, but it is preferable to use a nonwoven fabric in order to enhance the embossing effect described in detail later. As the material fibers constituting the nonwoven fabric, for example, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, natural fibers such as cotton, and air through Nonwoven fabric obtained by an appropriate processing method such as a method, an airlaid method, a spunlace method, a spunbond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the air-through method is 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 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.

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

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

  On the other hand, side nonwoven fabrics 7 and 7 are provided on both side portions on the surface side of the sanitary napkin 1 along the longitudinal direction and over almost the entire length of the napkin 1, respectively. An outer peripheral flap is formed by a part of the liquid-impermeable back sheet 2 that extends outward from the absorbent body 4 and also extends outward from the absorbent body 4.

  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. If importance is attached to the absorption of menstrual blood etc. on both sides of the napkin, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the synthetic fiber production process, Hydrophilic properties that have been treated with a metal salt such as tin to partially swell the surface and make the synthetic fiber swell or porous by a method of depositing metal hydroxide, etc. Use treated nonwoven fabric.

  Fit embosses 8, 8... Can be imparted from the surface side of the liquid-permeable surface sheet 3 in an appropriate pattern. Although not shown, embossing can be applied in an appropriate pattern along the longitudinal direction of the sanitary napkin 1 from the surface side of the side nonwoven fabric 7.

  On the non-skin contact surface (outer 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, an appropriate application pattern for fixing to the underwear In the example shown in FIG. 2, a plurality of strip-adhesive adhesive layers 9, 9... Are formed. These slip prevention adhesive layers 9, 9... Are releasably covered with a release sheet 10 described in detail in the next stage.

(Peeling sheet 10)
As the release sheet 10, paper that has been subjected to a release treatment on the entire contact surface side of the anti-displacement adhesive layer 9, polyolefin films such as polypropylene and polyethylene, films such as polyester and polyvinyl alcohol, nonwoven fabrics, Polylaminated nonwoven fabric is used. The release treatment can be formed by applying or spraying a release treatment liquid such as silicone resin, fluorine resin, or ethylene tetrafluoride resin. It should be noted that the film itself or the nonwoven fabric itself may be used as long as it is easily peelable and does not substantially reduce the adhesive force without special release treatment.

(Packaging sheet 11)
As the packaging sheet 11, a sheet-like member having a rectangular shape is used as shown in FIG. Specifically, a polyolefin film such as polypropylene or polyethylene, a film such as polyester or polyvinyl alcohol, a nonwoven fabric, or a polylaminated nonwoven fabric is used. If emphasis is placed on the design by printing, a film is preferable, and if emphasis is placed on the texture or soft feeling, non-woven fabric is preferable.

[Individual procedure for individually packaged sanitary napkin N]
Next, the individual packaging procedure of the individually packaged sanitary napkin N will be described in detail with reference to FIGS.

In the individual packaging, the sanitary napkin 1 is folded in advance in the longitudinal direction together with the release sheet 10 in the longitudinal direction as shown in FIGS. As shown in FIG. 3, the Z-shaped folding procedure is performed at the position of the rear end B from the front end F of the sanitary napkin 1 with the release adhesive 10 covering the anti-slip adhesive layers 9, 9. The first folded portion T ₁ (see FIG. 4) is formed by folding back to the surface (surface side) of the liquid-permeable surface sheet 3 together with the release sheet 10 at the folding line L ₁ . Thereafter, the by folding the liquid-impermeable back sheet 2 side surface together with the release sheet 10 by fold line L ₂ of the rear end position B successively to the first folded portion T ₁ (the back side) Two folded portions T ₂ (see FIG. 5) are formed. Wherein when the wrap fold line L _2, as shown in FIG. 4, may be provided an adhesive area 14 on the end portion of the side end B side after the sanitary napkin 1, so as not to peel the release sheet 10 facing the folding Let them be joined.

Here, the sanitary napkin 1, as shown in FIG. 5, with the front end F is formed to protrude outward from the second folded portion T _2, the rear end B is from the first folded portion T ₁ It is formed to protrude outward. The front end F and the projecting margin S _F of the rear end _B, S _B, respectively, to be formed in the dimension of the second folded portion T ₂ or the 1 8 to 30 mm from the folded portion T ₁ to the outside is preferred. If it is shorter than 8 mm, it will not be suitable as a picking allowance at the time of opening as will be described in detail later, and if it is longer than 30 mm, a compact individual packaging becomes impossible. In addition, it is preferable that the longitudinal direction edge part of the said peeling sheet 10 does not extend to the protrusion part of the said sanitary napkin 1. FIG.

  Since the sanitary napkin 1 is folded in a Z shape in the individual state as described above, the sanitary napkin 1 is folded by the difference in the circumference formed on the inner side of the folded portion than the folded front and rear end portions on the surface sheet side. The wrinkles are suppressed, and the lowering of the fit due to the folded wrinkles can be reduced at the time of wearing.

The sanitary napkin 1 previously folded in the Z shape as described above is individually packaged by the packaging sheet 11 as shown in FIGS. The individual packaging by the packaging sheet 11 is arranged so that the front end F and the rear end B of the sanitary napkin 1 are in the longitudinal direction of the packaging sheet 11 and the sanitary napkin 1 is arranged on the packaging sheet 11. 1 so that the sanitary napkin 1 is wrapped around the folding line M _{1 at} a position corresponding to the outside from the front end F ₁ and the folding line M ₂ at a position corresponding to the outside from the rear end B of the sanitary napkin 1. 11 is folded to the sanitary napkin 1 side, and both side edge portions of the packaging sheet 11 that are opened are respectively sealed by an appropriate sealing means such as embossing, heat fusion, and adhesive.

  Here, when the sanitary napkin 1 is arranged on the packaging sheet 11, as shown in FIG. 6, the release sheet 10 is provided with an adhesive region 13 at the end on the front end F side of the sanitary napkin 1. Each of the packaging sheets 11 is joined so as not to be peeled off.

The package sheet 11, when folded at fold line M ₁ and M _2, is preferably formed of a length that with the overlapping margin is folded end to each other. Further, in the example shown in FIG. 7, the overlapping portions of the folded ends are configured such that the opening is substantially suppressed by the sealing means on both sides only by overlapping the folded ends. The ends may be joined with an adhesive or a tab tape. In addition, in the example shown in FIG. 6, the packaging sheet 11 has a sheet portion that is folded back by winding the front end F of the sanitary napkin 1 in the rear because of the formation of a separation portion 11 b described later. The side end B is formed shorter than the sheet portion that is folded back.

As shown in FIG. 6, the packaging sheet 11 can be separated from a packaging sheet portion corresponding to one side of the front end F and the rear end B of the sanitary napkin 1, in the illustrated example, the front end F side. ing. That is, the packaging sheet 11 can be separated into the main body portion 11a and the separation portion 11b. The separation portion 11b, the formed a fold line M ₁ over the longitudinal direction of the package sheet 11, the bonding area of the package sheet 11 and the release sheet 10 on the center side of the fold line M ₁ from the package sheet 11 13 is formed in the vicinity. On the other hand, the edge side of the fold line M ₁ from the packaging sheet 11 has been formed to the edge in the illustrated example, it may be up to an intermediate portion that does not lead to the edge.

In order to make the packaging sheet 11 separable, a separate sheet material in which perforations 12 are formed along the outer periphery of the separation portion 11b or joined to the main body portion 11a by an easily peelable joining means. Can be provided.
[Opening procedure for sanitary napkin N]
Next, the procedure for opening the individual sanitary napkin N will be described with reference to FIG.

  As shown in FIG. 8 (A), the opening procedure of the individually packaged sanitary napkin N is as follows. The front end F and the rear end B of the sanitary napkin 1 are picked from the outside of the packaging sheet 11 with their respective hands. A tensile force is applied in a direction in which the sanitary napkin 1 is developed in the longitudinal direction. 8B and 8C, the separation portion 11b of the packaging sheet 11 is separated from the main body portion 11a and opened at the front end F of the sanitary napkin 1, and the packaging sheet 11 ( Since the main body portion 11 a) and the release sheet 10 are bonded to each other at the bonding region 13 and the release sheets 10 are bonded to each other at the bonding region 14, the sanitary napkin 1 is developed with the peeling of the release sheet 10. The sanitary napkin 1 thus opened and unfolded and peeled off from the release sheet simultaneously is attached to the underwear 30 as it is as shown in FIG. 11a and the separation part 11b are removed in this order. Therefore, it can be easily opened and can be attached to the underwear without touching the sanitary napkin 1 directly.

  Here, the release sheet 10 is formed of a material having elasticity in at least the longitudinal direction of the sanitary napkin 1, and covers the slip-proof adhesive layer 9 of the sanitary napkin 1 so as to be peelable in an extended state. It is preferable to arrange. Thereby, since the shrinkage force of the peeling sheet 10 acts at the time of opening, the tension | pulling force to a napkin longitudinal direction may be small, and peeling of the peeling sheet 10 becomes easy.

  Further, since the main body portion 11a of the opened packaging sheet 11 is formed in a bag shape with the separation portion 11b opened, the used sanitary napkin is rolled and inserted when it cannot be immediately disposed of in a trash can. Thus, the bag can be used as a sanitary portable bag that is compact and reduces liquid leakage.

[Other examples]
(1) In the above embodiment, the first folded portion T ₁ and the second folded portion T ₂ are formed from the front end F toward the rear end B when the sanitary napkin 1 is folded in a Z shape. However, the first folded portion T ₁ and the second folded portion T ₂ may be formed from the rear end B toward the front end F.
(2) In the above embodiment, the separation portion 11b of the packaging sheet 11 is formed at a portion corresponding to the front end F side of the sanitary napkin 1, but instead of this, it corresponds to the rear end B side of the sanitary napkin 1. You may make it form in the part to do.

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impermeable back sheet, 3 ... Liquid permeable surface sheet, 4 ... Absorber, 5 ... Encapsulating sheet, 7 ... Side nonwoven fabric, 8 ... Fit embossing, 9 ... Anti-slipping adhesive Layer 10, release sheet 11, packaging sheet 12 perforation 13, 14 adhesion region

Claims (5)

An absorbent article in which an absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and an anti-slipping adhesive layer is formed on the outer surface of the back sheet, and peeling that covers the anti-slipping adhesive layer in a peelable manner. An individually absorbent article comprising a sheet and a packaging sheet for individually packaging these absorbent article and release sheet,
The absorbent article is on the surface of the liquid-permeable surface sheet side together with the release sheet at a position on the other end side from the one end in the longitudinal direction of the absorbent article in a state where the anti-slip adhesive layer is covered with the release sheet. Folded in a Z-shape in the longitudinal direction by a first folded portion that is folded and a second folded portion that is continuous with the first folded portion and is folded on the surface on the back sheet side together with the release sheet at the other end side position. In this Z-shaped folded state, it is individually packaged by the packaging sheet,
The absorbent article is formed such that the one end protrudes outward from the second folded portion and the other end protrudes outward from the first folded portion, and the release sheet is formed from the absorbent sheet. An end on one end side of the article is joined to the packaging sheet so as not to be peeled off, and an end on the other end side of the absorbent article is joined to the release sheet facing the face so as not to peel off,
The individual absorbent article, wherein a packaging sheet portion corresponding to one side of the absorbent article and one side of the other end is separable.   The individual absorbent article according to claim 1, wherein the protruding margins at one end and the other end of the absorbent article are each formed with a dimension of 8 to 30 mm outside the second folded part or the first folded part.   The packaging sheet according to any one of claims 1 and 2, wherein a perforation is formed in the packaging sheet so that a packaging sheet portion corresponding to one side of the one end and the other end of the absorbent article can be separated. Individual absorbent article.   The said packaging sheet is provided with the sheet | seat of another body, The packaging sheet part corresponding to the one side of the one end of the said absorbent article and the other end is made separable. Individual absorbent article.   The individual packaging absorption according to any one of claims 1 to 4, wherein the release sheet is formed of a material having elasticity in at least a longitudinal direction of the absorbent article, and is covered with the anti-slip adhesive layer in an extended state. Sex goods.

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