JP2011135994A - Packaged absorptive article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve attaching property when a packaged absorptive article is opened. <P>SOLUTION: The packaged absorptive article includes an absorptive-article body where a nonslip adhesive part is formed on a skin-attachment surface side for fixing on an underwear, a peeling sheet for covering and protecting the nonslip adhesive part, and a packaging sheet combined together with the peeling sheet through one or more bonding parts. The nonslip adhesive part includes a side adhesive part arranged along the front-back direction on both sides at each end of the absorptive article body, and a center adhesive part arranged between the side adhesive parts along the front-back direction of the absorptive-article body whose front end is posterior to the front end of the side adhesive part. Both the sides of the adhesive part positioned at the front most side are overlapped on the respective side adhesive parts, and the front edge positions at the same position as the front end of the center adhesive part, or anterior to it, while positioning posterior to the front edge of the side adhesive part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to absorbent articles such as packaged absorbent articles, light incontinence liners, light incontinence pads, and cage sheets.

Conventionally, as absorbent articles such as absorbent articles, panty liners, cage sheets, and incontinence pads, for example, as shown in FIG. 9, a liquid-impermeable back sheet made of a polyethylene sheet or a polyethylene laminated nonwoven fabric, and a nonwoven fabric Alternatively, there is known one in which an absorbent body made of cotton-like pulp or the like is interposed between a liquid-permeable surface sheet made of a permeable plastic sheet or the like.
This main absorbent article is generally formed with an adhesive portion for fixing to clothes or the like on the non-skin contact surface side (back surface) in order to prevent displacement in the mounted state.
Various arrangement patterns are known for this adhesive part, but the pattern of the adhesive part is mainly wrinkles, turns, bents, etc. of the absorbent article accompanying the movement of the legs during the mounting of the absorbent article. It is designed from the viewpoint of effectively preventing deformation and preventing leakage of body fluid such as menstrual blood accompanying the deformation.

On the other hand, the absorbent article is required to have an appearance that is not known to be an absorbent article in a state before use, and a device that makes the absorbed menstrual blood etc. as inconspicuous as possible even after the use is desired. . Individual packaging is used as a device to satisfy this requirement.
An example of the packaging absorbent article is as shown in FIG. The packaging absorbent article X2 in the illustrated example has an absorbent article 101 (hereinafter also referred to as an absorbent article main body), a release sheet 102, and a packaging sheet 103. A seal tape 160 is affixed. The release sheet 102 is coated with an adhesive 150 near the front end of the back surface (in the illustrated example, the rear end also has an adhesive portion), and is adhered to the packaging sheet 103 through the adhesive 150 so as not to be peeled off. ing.
And as the whole is shown with the dashed-dotted line arrow in the same figure in the state where the peeling sheet 102 adhere | attached on the packaging sheet 103 was piled up so that the slip prevention adhesion part 140 of the absorbent article main body 101 might be covered and protected. Folded into three, both side edges 103E of the packaging sheet 103 are sealed, and the absorbent article body 101 is packaged absorbent article X2 packaged with a packaging sheet.

Here, when opening and using this type of packaged absorbent article, the front end of the absorbent article main body 101 is picked with one hand, and the seal tape 160 (packaged with a product without a seal tape) with the other hand. The release sheet 102 is peeled from the anti-displacement adhesive portion 140 together with the packaging sheet 103 by picking the front end of the sheet. At that time, as described above, since the end of the seal tape 160 is picked and pulled, the release sheet 102 and the packaging sheet 103 are directed from the front end (the end of the seal tape side) of the absorbent article body 101 toward the rear end. It is peeled off in such a way that it is continuously peeled off.
At this time, in the conventional arrangement pattern of the anti-slipping adhesive part and the bonding mode between the packaging sheet and the release sheet, it is difficult to peel off, or the adhesive parts stick to each other along with the peeling, etc. In some cases, prompt wearing of clothing was hindered.
Conventionally, the arrangement pattern of the adhesive part in the absorbent article has been mainly focused on the effect of preventing leakage, and sufficient consideration has not been given to improving the usability when peeling such a release sheet. .

JP 2009-136354 A Japanese Utility Model Publication No. 62-189725 JP 2005-334348 A Japanese Patent No. 4176724

  Therefore, the main problem of the present invention is to further improve the effect of preventing leakage of menstrual blood caused by deviation from clothing at the time of wearing in the package absorbent article, and also to absorb the packaging sheet particularly when worn on clothing. The object is to be able to remove the article body quickly and without problems.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
An absorbent article body in which an absorbent body is interposed between the liquid-permeable surface sheet and the liquid-impermeable back sheet, and a non-skin contact surface side is provided with a non-slip adhesive portion for fixing to the underwear,
A release sheet for covering and protecting the anti-slipping adhesive portion;
A packaging absorbent article having the release sheet and a packaging sheet integrated through one or more adhesive portions,
The anti-slip adhesive portion is disposed along the front-rear direction of the absorbent article main body between the side adhesive portion disposed along the front-rear direction at each side end of the absorbent article main body and the side adhesive portion. And the front end of the side adhesive section has a central adhesive section on the rear end side with respect to the front end of the side adhesive section,
The adhesive part is located at the foremost part of the adhesive part, and both side parts thereof overlap each side adhesive part, and the front edge thereof coincides with the front end of the central adhesive part or is in front of it and the side part. A packaging absorbent article, characterized in that the packaging absorbent article is located behind the front edge of the adhesive portion.

<Invention of Claim 2>
The packaging absorbent article of Claim 1 whose adhesive force of a side part adhesion part is lower than a center part adhesion part.

<Invention of Claim 3>
The packaging sheet is wider than the absorbent article body and the front edge extends forward from the absorbent article body and the protective sheet;
The packaging sheet and the absorbent article main body and the covering sheet are combined, the rear end portion in the front-rear direction is folded, and the front end portion is folded and overlapped to form a three-fold structure.
And the overlapping part of the side edge part of the said packaging sheet is adhere | attached so that peeling is possible, and the said extension part overlaps and adheres to the rear side edge part of a packaging sheet, and is individually packaged. Packaging absorbent articles.

<Others>
In the present invention and the present specification, the front and rear of components such as the absorbent article main body are distinguished, but this is for convenience. For example, in the absorbent article main body having a clear front and rear distinction. It is not limited. Even in the case of the absorbent article main body to be subjected to the front and rear, one end is a front end and the other end is a rear end.
Moreover, the front and back of each member are the same direction. That is, the front and the rear in the state where the absorbent article main body, the release sheet, and the packaging sheet are integrated mean the same direction.

  According to the present invention, the effect of preventing leakage of menstrual blood caused by deviation from clothing at the time of wearing a packaged absorbent article is further improved. It can be quickly and easily removed from the main body. The present invention is particularly suitable for a sanitary napkin that requires quick opening and wearing in a narrow space such as a restroom.

It is an expansion | deployment disassembled perspective view of the packaging absorbent article of embodiment of this invention. It is an expansion perspective view of an absorptive article main part of an embodiment of the present invention. It is an expanded top view of an absorptive article main part of an embodiment of the present invention. It is an expansion | deployment reverse view of the packaging absorbent article of embodiment of this invention. It is a partially expanded plan view for demonstrating the positional relationship of the arrangement pattern of the adhesion part provided in the absorbent article main body of embodiment of this invention, and an adhesion part. It is a figure which shows the arrangement pattern of the other adhesion part of the packaging absorbent article of embodiment of this invention. It is a figure which shows the arrangement pattern of another adhesion part of the packaging absorbent article of embodiment of this invention. It is a figure which shows the arrangement pattern of another adhesion part of the packaging absorbent article of embodiment of this invention. It is an expansion | deployment disassembled perspective view of the conventional package absorbent article.

Embodiments of the present invention will be described in detail below with reference to FIGS.
[Outline of packaging absorbent article]
The packaging absorbent article X1 of this embodiment includes an absorbent article main body 1, a release sheet 2, and a packaging sheet 3 each having a plurality of anti-slip adhesive portions on a non-skin contact surface.

[Example of structure of absorbent article body]
The absorbent article body 1 includes a liquid-impervious back sheet 10 made of a polyethylene sheet, a polypropylene sheet, etc., a liquid-permeable surface sheet 20 that quickly transmits body fluids such as menstrual blood and vaginal discharge, And an absorbent body 30 made of cotton-like pulp or synthetic pulp interposed between 20 and the outer periphery of the liquid-impervious back sheet 10 and the liquid-permeable surface sheet 20 at the periphery of the absorbent body 30. However, a flap portion joined by an adhesive such as hot melt or an adhesive means such as heat seal is formed. The absorber 30 can be surrounded by crepe paper (not shown) for shape retention and diffusibility improvement. Further, in order to improve the fit of the absorbent body 30 to the body and prevent side leakage or the like, the fit emboss (emboss groove) 1E can be formed in an appropriate shape.

(Impermeable back sheet)
As the liquid-impermeable back sheet 10, a sheet material having at least water shielding properties such as an olefin-based 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, and further waterproof. A nonwoven fabric sheet (in this case, a waterproof film and a nonwoven fabric constitute a liquid-impervious back sheet) and the like can be used after substantially impervious to liquid impregnation via a film. It may have moisture permeability from the viewpoint of prevention of stuffiness, and as a water shielding / moisture permeable sheet material, after forming a sheet by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, Examples thereof include a microporous sheet obtained by stretching in a uniaxial or biaxial direction.

(Liquid-permeable surface sheet)
As the liquid-permeable surface sheet 20, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft.

(Absorber)
The absorber 30 interposed between the liquid-impervious back sheet 10 and the liquid-permeable top sheet 20 is composed 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 surrounding the absorber 30 is provided, the crepe paper intervenes between the liquid-permeable surface sheet 20 and the absorber 30 as a result, and the crepe paper having excellent absorbability is used to remove the body fluid. It diffuses promptly and prevents reversal of these menstrual blood and the like.

(Adhesive part to prevent misalignment)
The non-skin contact surface (also referred to as the back surface) of the absorbent article main body 1, that is, the surface that becomes the underwear contact surface in the mounted state of the liquid-impermeable back sheet 10, is provided with a predetermined pattern anti-slip adhesive portion according to the present invention. 41 and 42 are formed.

  As the adhesive that forms the anti-slip adhesive portions 41 and 42, for example, a styrenic polymer, a tackifier, or a plasticizer that is a 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.

(Pattern of the adhesive part to prevent misalignment)
The slip prevention adhesive part of this invention is comprised by the side part adhesive parts 41 and 41 and center part adhesive parts 42, 42 ... along the front-back direction at each both-sides edge part of the absorbent article main body 1. As shown in FIG.

The side adhesive part 41 has a width of 5 to 10 mm, and is disposed within 10 mm from the side edge of the absorbent article body 1. Further, the length of the side adhesive portion 41 is desirably 70% or more of the length in the front-rear direction of the absorbent article main body 1 (referring to the length in the front-rear direction of the side adhesive portion arrangement portion). The side adhesive portion 41 effectively prevents deformation of the absorbent article, such as wrinkles, turns, and bends, mainly due to leg movement.
In addition, although the side part adhesion part 41 in the example of illustration is formed on the straight line along the front-back direction of the absorbent article main body 1, it is not restricted to this, You may form intermittently (dotted line shape).

The central adhesive portion 42 is positioned between the side adhesive portions 41 and 41. However, the side adhesive portion 41 and the central adhesive portion 42 do not have to be completely separated from each other, and may partially overlap. Although the center part adhesion part 42 of the example of FIG. 4 is provided in the front-back direction of the absorbent article main body 1 as a suitable example, it is not restricted to this form. If it is a suitable form of said 3 item | stripes, the width | variety should be 5-20 mm.
Further, the length of the central adhesive portion 42 is preferably about 70% of the length in the front-rear direction of the absorbent article main body 1 (referring to the length in the front-rear direction of the central portion adhesive portion arrangement portion). Moreover, it is not limited to a straight line like the side adhesive part 41, and may be formed intermittently (dotted line).
The center adhesive portion 42 prevents deformation of the absorbent article such as wrinkles, turns and bends along with the movement of the legs together with the side adhesive portion 41, and further improves the fixability to clothes.

  Here, the packaging absorbent article X1 of the present invention is characteristically characterized by the front end 42F of the central adhesive portion 42 (the front end of the central adhesive portion 42 extending to the foremost side when having a plurality of central adhesive portions). Is positioned on the rear end side of the absorbent article main body 1 with respect to the front end 41F of the side adhesive portion 41. That is, the front end of the side adhesive portion 41 is in a position protruding from the front end 42F of the central adhesive portion 42. The protruding length L1 of the side adhesive part front end 41F from the central adhesive part front end 42F is preferably 8 to 20 mm. If the protruding length is too long, the non-fixed portion between the absorbent article main body and the undergarment between the protruding portions of the side adhesive portions on both sides becomes wide, so that when the absorbent article main body 1 is mounted (in use), the underwear It becomes easy to shift. On the other hand, if it is too short, effective peeling sheet 2 and packaging sheet 3 described later are difficult to peel from the absorbent article body 1.

On the other hand, the adhesive strength of the side adhesive portion 41 is preferably the same or lower than that of the central adhesive portion 42. Here, although the specific numerical value of adhesive force is a design matter and is not limited, this adhesive force means the adhesive force with respect to a peeling sheet. Moreover, when there are a plurality of central adhesive portions, it means the adhesive strength of the entire central adhesive portion. In short, this configuration is a configuration in which the adhesive strength of the central portion is high and the adhesive strength of the side portions is low in the width direction of the absorbent article main body. Thus, when the adhesive force of the side part adhesive part 41 is lower than the center part adhesive part 42, it may become easy to peel from each adhesive part 41 and 42 of the peeling sheet 2 and the packaging sheet 3 mentioned later. .
In addition, the arrangement pattern of the adhesive concerning this invention is illustrated in FIGS.

[Peeling sheet]
The release sheet 2 can be a plastic film, a paper base material coated with a release agent such as silicon on one surface thereof, and can be peeled and adhered to each of the adhesive portions 41 and 42. Thus, the adhesive portions 41 and 42 are covered and protected. The release sheet 2 can be made of a known material used for this type of absorbent article.
Note that the release sheet 2 in the illustrated example is a single release sheet 2 that integrally covers the adhesive portions 41 and 42 formed on the non-skin contact surface of the absorbent article body 1. The adhesive portions 41 and 42 may be covered with a plurality of sheets. However, the desirable form is a single sheet.
The release sheet 2 is laminated and integrated with the packaging sheet 3 so as not to be peeled off through adhesive portions 50 and 51 formed by an adhesive or a double-sided adhesive tape. As the adhesive, a known adhesive is used.

[Packaging sheet]
As the packaging sheet 3, a film sheet such as a polyethylene sheet, an SMS nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric, a nonwoven fabric sheet such as an air-through nonwoven fabric, paper, or the like is used. It is desirable that an appropriate pattern or the like is printed on the packaging sheet 3 in accordance with a known technique.
The front and rear length of the packaging sheet 3 is substantially the same as or longer than the front and rear length of the absorbent article body 1, and the left and right width is wider than the width of the absorbent article body 1.
The packaging sheet 3 is overlapped with the absorbent article main body 1 such that the front end of the packaging sheet 3 protrudes from the front end of the absorbent article main body 1, and a seal tape 60 is attached to the extension (front end) 3 </ b> A. A part of it sticks out.

[Positional relationship between each adhesive part and adhesive part]
As described above, in the packaging absorbent article X1 of the present invention, the release sheet 2 and the packaging sheet 3 are laminated and integrated through the adhesive portions 50 and 51, and the release sheet 2 is bonded to the adhesive portions 41 and 42, respectively. It is comprised so that it may coat | cover and protect. Furthermore, the front end 42 </ b> F of the central adhesive portion 42 has an arrangement pattern of the adhesive portions 41, 42 on the rear end side of the front end 41 </ b> F of the side adhesive portion 41.

  Along with these configurations, the packaging absorbent article X1 of the present invention has an adhesive portion 50 (an adhesive portion located in the forefront when having a plurality of adhesive portions. 2 has two adhesive portions 50 and 51, and the adhesive portion denoted by reference numeral 50 is an adhesive portion located in the front.) However, both side portions 50E are the side adhesive portions 41 and 4 on both sides. The front edge 50 </ b> F overlaps with the front edge 42 </ b> F of the central adhesive portion 42, and is located in front of the front edge 42 </ b> F of the central adhesive portion 42 and positioned behind the front edge 41 </ b> F of the side adhesive portion 41. More preferably, the rear end portion of the bonding portion 50 overlaps the central adhesive portion 42.

  When such a positional relationship between the adhesive portion 50 and the adhesive portions 41 and 42 is taken, the release sheet 2 and the packaging sheet 3 are bonded to each other to become substantially one piece, and the front of the adhesive portion 50 having increased rigidity. The end 50 </ b> F is not positioned at the central adhesive portion 42 but only the side adhesive portion 42, and the adhesive portion as a whole is positioned at a portion where the adhesive force is weak. Thereby, in the packaging absorbent article X1 of the present invention, when the packaging sheet 3 is peeled from the front end side, it is very easy to start peeling from the release sheet 2 and the absorbent article body 1 of the packaging sheet 3. It becomes.

  Further, the peeling operation from the absorbent article main body 1 such as the packaging sheets 2 and 3 is generally performed by picking the center front end 1F of the absorbent article main body 1 with one hand and the packaging sheet with the other hand. 3 is operated so that the front end of 3 or the sealing tape 60 formed there is picked and peeled off along the front-rear direction of the absorbent article.

  When such an operation is performed, when the adhesive force of the side part of the absorbent article main body part 1 is excessively stronger than the central part as a configuration of the adhesive parts 41 and 42, the central part is more than the side part at the time of peeling. Comes to be peeled first from the release sheet, and accordingly, the side edges of the absorbent article main body come close to each other. This means that the adhesive parts formed on the side parts of the napkin body exposed by peeling off the release sheet 3 may adhere to each other.

Therefore, as described above, when the adhesive strength of the side adhesive portion 41 is lower than that of the central adhesive portion 42 according to the present invention, the peeling sheet 2 is centered when this peeling operation is performed. Since the side adhesive part 41, that is, the side edge part of the absorbent article main body becomes easier to peel than the part adhesive part 42, the side adhesive part 41 rather than the center adhesive part 42 when the peeling operation is performed. As a result, the absorbent article body 1 does not come close to each other, or both sides of the release sheet 2 do not come close to each other, and rapid continuous peeling from the front to the rear. Becomes easy, and a suitable peeling operation is performed.
The overlapping width between the side part 50E of the adhesive part 50 and the side part adhesive part 41 is preferably 2 to 10 mm.

[Packaging structure example]
The packaging absorbent article X1 of the present invention is desirably formed into an individual package by folding the release sheet 2 and the packaging sheet 3 together with the absorbent article body 1 and folding them together into three. This folding is performed in the order of the arrow (1) and the arrow (2) shown in FIG. 2 so that the pressure-sensitive adhesive portion forming side is outside the absorbent article main body 1. That is, first, approximately one fourth of the side opposite to the seal tape 60 is folded, and then, approximately one third of the side of the seal tape 60 is folded. Thereby, the edge part by the side of the sealing tape 60 of the packaging sheet 3 overlaps with the edge part on the opposite side from this, and the absorbent article main body 1 will be in the state completely covered with the packaging sheet 3. The overlapping portion of the end portions of the packaging sheet 3 is closed with a seal tape 60.

  And the absorbent article main body 3 is completely packaged by heat-sealing the overlapping parts of the left and right side edge portions 3E of the packaging sheet 3.

  X1, X2 ... Packaging absorbent article, 1,101 ... Absorbent article body, 1E ... Emboss, 1F ... Absorbent article body front end, 2,102 ... Release sheet, 3,103 ... Packaging sheet, 3E , 103E ... side edge of packaging sheet, 3A ... extension part, 10 ... liquid-impervious back sheet, 20 ... liquid-permeable top sheet, 30 ... absorbent, 40 ... slip-off adhesive part, 41 ... side part adhesive , 41F: front end of side adhesive part, 42 ... center adhesive part, 42F ... front end of central adhesive part, 50, 51, 150 ... adhesive part, 50E ... side part of adhesive part, 50F ... adhesive part Front side edge, 60, 160... Seal tape, L1... Projection length from front end of central adhesive part of side adhesive part front end.

Claims (3)

An absorbent article body in which an absorbent body is interposed between the liquid-permeable surface sheet and the liquid-impermeable back sheet, and a non-skin contact surface side is provided with a non-slip adhesive portion for fixing to the underwear,
A release sheet for covering and protecting the anti-slipping adhesive portion;
A packaging absorbent article having the release sheet and a packaging sheet integrated through one or more adhesive portions,
The anti-slip adhesive portion is disposed along the front-rear direction of the absorbent article main body between the side adhesive portion disposed along the front-rear direction at each side end of the absorbent article main body and the side adhesive portion. And the front end of the side adhesive section has a central adhesive section on the rear end side with respect to the front end of the side adhesive section,
The adhesive part is located at the foremost part of the adhesive part, and both side parts thereof overlap each side adhesive part, and the front edge thereof coincides with the front end of the central adhesive part or is in front of it and the side part. A packaging absorbent article, characterized in that the packaging absorbent article is located behind the front edge of the adhesive portion.   The packaging absorbent article of Claim 1 whose adhesive force of a side part adhesion part is lower than a center part adhesion part. The packaging sheet is wider than the absorbent article body and the front edge extends forward from the absorbent article body and the protective sheet;
The packaging sheet and the absorbent article main body and the covering sheet are combined, the rear end portion in the front-rear direction is folded, and the front end portion is folded and overlapped to form a three-fold structure.
And the overlapping part of the side edge part of the said packaging sheet is adhere | attached so that peeling is possible, and the said extension part overlaps and adheres to the rear side edge part of a packaging sheet, and is individually packaged. Packaging absorbent articles.

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