JP2001037804A - Individually packing structure of absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the reduction in the leakage prevention of an absorbent article when taking it out of an individually packing structure. SOLUTION: This individually packing structure is provided with an absorptive layer 21 of a liquid absorbent and a leakage preventive layer 24 of liquid impermeablity, and a substantially lengthwise long physiological napkin 2 is formed individually and integrally and folded with a packing member 3. The absorptive layer 21 is provided with a plurality of side leakage preventive grooves 27a formed toward the longitudinal direction of the physiological napkin 2 and connecting leakage preventive grooves 27b formed toward the width direction of the physiological napkin 2 so as to connect the respective side leakage preventive grooves 27a. Further, both the right and left sides of the physiological napkin 2 are provided with leakage preventive walls 28 having an elastic member 28a. The physiological napkin 2 and the packing member 3 are folded as folding parts 4 at three places in the portion where the expansive/contractive force is not existent, and two of the folding parts 4 are positioned so as to overlap with the connecting leakage preventive grooves 27b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an individual structure of an absorbent article, which does not deteriorate the leak preventing performance of the absorbent article.

[0002]

2. Description of the Related Art As an absorbent article such as a sanitary napkin, a leak-proof wall having elastic members on both left and right sides in the longitudinal direction is provided for the purpose of further improving leak-proof property. Things have been suggested. However, absorbent articles with improved leak-proofing properties as described above are usually individually packaged individually in a packaging material and are commercially available.However, in the conventional single-package structure, when taken out of the single-package structure, The leak-proof wall was distorted, the function could not be sufficiently exhibited, and the leak-proof property of the absorbent article was sometimes reduced.

[0003] Accordingly, an object of the present invention is to provide an individual packaging structure of an absorbent article in which the leak-proof property of the absorbent article does not decrease when taken out from the individual packaging structure.

[0004]

SUMMARY OF THE INVENTION The present invention comprises a liquid-absorbing absorbent layer and a liquid-impermeable leakage-preventing layer. In the individual structure of the absorbent article, the absorbent layer is connected to a plurality of side leakage prevention grooves formed in the longitudinal direction of the absorbent article and each side leakage prevention groove. A connecting leak-proof groove formed in the width direction of the absorbent article is provided, and a leak-proof wall having an elastic member is provided on both left and right sides of the absorbent article, and the absorbent article and the The packaging material is folded at two or more predetermined portions in a portion where there is no expansion and contraction force by the elastic member, and at least one of the bent portions is positioned so as to overlap with the connection leak-proof groove. The object has been achieved by providing an individualized structure of an absorbent article Than it is.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described. As shown in FIGS. 1 to 4, the individual packaging structure 1 of the sanitary napkin as the individual packaging structure of the absorbent article according to the present embodiment includes a liquid-absorbing absorbent layer 21 and a liquid-impermeable leakproof layer 24. A sanitary napkin 2 that is provided with a substantially vertical shape is folded and integrally packaged with the packaging material 3 and individually mounted.

In the sanitary napkin 2 of this embodiment, as shown in FIGS. 2 and 3, the absorbent layer 21 is composed of a liquid-permeable top sheet 22 and a liquid-retentive absorbent body (not shown). The absorber has a first absorber (not shown) located on the leak-proof layer 24 side and an elongated shape smaller than the first absorber, which is placed on the skin contact surface side of the first absorber. And a second absorber (not shown). Each of the first absorber and the second absorber is formed by wrapping a pulp aggregate (not shown) with a mount (not shown). Also, the left and right sides of the top sheet 22 are wrapped around the back side of the first absorber (not shown). The leak-proof layer 24 includes a liquid-impermeable leak-proof sheet (not shown) and skin contact sheets (not shown) laminated on both left and right sides of the leak-proof sheet.

Further, the sanitary napkin 2 of the present embodiment comprises:
A pair of left and right flaps 25 formed by extending the leakage prevention layer 24 outward in the width direction are biased toward the front side. Also,
An adhesive is applied to the back side of the flap 25 and the back side of the leakage prevention layer 24 on which the absorbing layer 21 is disposed, so that a slip preventing portion 26 is formed.

The packaging material 3 has been subjected to a peeling treatment and has a rectangular shape. As shown in FIG.
When the sanitary napkin 2 folded upward is placed, the size is such that the packaging material 2 extends outward from the outer peripheral edge of the sanitary napkin 2. Further, the front edge portion 31 of the packaging material 3
, A fastening tape 34 is disposed, and on the outer surface of the rear end edge 32, a release paper 35 that is in contact with the shift stopper 26 of the flap 25 is disposed.

Thus, in the individual structure 1 of the sanitary napkin 2 of the present embodiment, as shown in FIGS.
1 is formed in the width direction of the sanitary napkin 2 so as to connect the plurality of side leakage prevention grooves 27a formed in the longitudinal direction of the sanitary napkin 2 and the respective side leakage prevention grooves 27a. Wall 27 having elastic members 28a on both left and right sides of the sanitary napkin 2.
Is provided, and the sanitary napkin 2 and the packaging material 3 are
Three portions in a portion where there is no expansion / contraction force due to the elastic member 28a are folded as bent portions 4, and two of the bent portions 4 are positioned so as to overlap with the connection leak-proof groove 27b.

[0010] More specifically, the leak-proof wall 28 is formed by the absorption layer 2.
1. A separate leakproof nonwoven fabric is extended from the back side of both left and right side edges of 1, and the nonwoven fabric is folded once toward the inside of the sanitary napkin 2 and further folded toward the outside of the sanitary napkin 2. Is formed. The elastic members 28a are arranged on the leak-proof walls 28 located on the left and right sides of the part 20a that contacts the excretion part of the wearer. In the front part and the rear part, the leakage prevention wall 28 is fixed by the front part fixing part 28b (see FIG. 3) and the rear part fixing part 28c (see FIG. 3).
To form a pair of left and right gathers. The length of the elastic member 28a is a length corresponding to at least the portion 20a that contacts the excretory part. Here, the fixing portions 28b and 28c are respectively formed by fixing the leak-proof wall 28 to the topsheet 22 using an adhesive that is usually used for an absorbent article or by heat sealing or the like.

In the sanitary napkin 2 according to the present embodiment, the thick absorbent portion 21a is provided in the central region of the sanitary napkin in the absorbent layer 21 by the second absorber.
Are formed. The bulky portion 21a is preferably 3 mm or more, more preferably 3 to 30 mm, and more preferably 3 to 3 mm.
It has a thickness of 0 mm, most preferably 5 to 15 mm. Here, the thickness is measured by placing a disk having a diameter of 17.84 mm (area: 2.5 cm ² ) on the upper surface of the center of the measuring section and measuring the thickness under a load of 5 g / cm ² by Tensilon (Model RTM-2 manufactured by Toyo Baldwin Co., Ltd.).
It measured using 5). The evaluation sample is measured in a form in which the release paper of the sanitary napkin or the like is removed, and the adhesive effect such as slippage prevention may be eliminated by a white pigment (such as talc). The thickness is measured at the top of the bulky portion (the thickest portion).

The sanitary napkin 2 is provided with two side leakage prevention grooves 27a at the front and four at the rear. The front side leakage prevention groove 27a, the rear side inside leakage prevention groove 27a, and the connection leakage prevention groove 27b are respectively
It is formed along the outer periphery of the second absorber, that is, along the bulky portion 21a. Each connection leakage prevention groove 27b is semicircular. Also, each leak-proof groove is the same as a known leak-proof groove,
It is formed linearly by heat sealing etc.,
It is formed by pressing the topsheet 22 and the pulp aggregate in a concave shape to the vicinity of the leakage prevention layer 24. In addition, the front part in this embodiment is a part located in front of a wearer at the time of wear, and includes a part which contacts the excretion part of a wearer at the time of wear in this embodiment. In addition, the rear portion is a portion located behind the wearer when worn, and in the present embodiment, a portion located closer to the rear end edge than the portion that contacts the excretory portion. In addition, the front part and the rear part are words used for convenience,
It does not limit the usage form and the like.

In this embodiment, there are three bent portions 4, and one bent portion 4a located at the center is provided so as to cross the bulky portion 21a. Further, the other two bent portions 4b located at both end portions are respectively overlapped with the connection leakage preventing grooves 27b. Each of the bent portions 4 is formed at a portion where the elastic member 28a does not exist. In the present specification, "overlap with the connection leak-proof groove" means that it only partially overlaps with the connection leak-proof groove, and in the present embodiment, the vertex of the semicircular connection leak-proof groove (most absorbing At the outermost part of the sexual article) in the tangential direction at this vertex. The individual packaging structure 1 of the sanitary napkin of the present embodiment is folded at three bent portions 4 to be folded into four. The packaging material 3 is sealed by the pair of left and right sealing portions 5, and the front end portion 31 is also sealed. The fastening tape 34 is adhered to the outer surface of the packaging material.

The connecting leak preventing groove 27b is preferably formed over 30% of the width of the absorber, and the tangent of the leak preventing groove has a range of 45 ° to 90 ° with respect to the longitudinal center line. Is preferred. The length of the elastic member 28a is preferably 3 to 30 cm, more preferably 5 to 25 cm.
In cm, the position provided is arbitrary depending on the length of the sanitary napkin, but the distance from the front edge of the sanitary napkin is preferably 1 to 10 cm, more preferably 2 to 8 cm, and It is desirable that the distance from the edge is preferably 2 to 30 cm, more preferably 3 to 25 cm. Further, the position of the bent portion is arbitrary according to the number of times of folding. In addition, as a material for forming each component in the individual structure of the sanitary napkin of the present embodiment, a known material can be used without particular limitation.

The individual packaging structure of the sanitary napkin according to the present embodiment is similar to the normal packaging structure, in which the fastening tape 34 is pulled, the individual packaging structure is opened, and the sanitary napkin is taken out for use. Can be. The individual structure of the sanitary napkin according to the present embodiment, since the sanitary napkin is bent along the connection leak-proof groove, it is easy to fold, and even a thick sanitary napkin can be processed without any trouble. Since the folding process can be performed neatly, the surface is not roughened, the feel is good, and the wrinkles are less noticeable. In addition, the research of the present inventors has revealed that when the elastic member is bent at a certain position, the stretching force is relaxed, and the leak-proof wall structure is not formed well. However, in the present invention, the elastic member does not exist. Since the bent portion is formed at the position, the effect of the elastic member expansion and contraction force is sufficiently exerted, and the structure of the leak-proof wall and the concave structure when the cross section in the longitudinal direction is taken at the time of opening are preferably formed. Is exhibited. In particular, the above-described effects are remarkably exerted on the absorbent article having a bulky portion of the present embodiment.

In the sanitary napkin packaging structure of this embodiment, as shown in FIG. 3, the sanitary napkin 2 is placed on the packaging material 3 and the flap portion 25 is folded over the absorbent layer 21. Folded at a predetermined bent portion 4 and folded into four, the side edge portion 33 is sealed by heat sealing or the like to form the sealing portion 5, and the front edge portion 31 is sealed by heat sealing or the like, Finally, it is manufactured by adhering the fastening tape 34 or the like.

The individual structure of the sanitary napkin of the present embodiment is not limited to the above-described embodiment, and can be variously changed without departing from the gist of the present invention. For example, the bent portion may be formed in two places to form a three-fold structure, or in four or more places. The number of the leakage prevention grooves may be two in each of the front part and the rear part. Alternatively, the number can be three or more. The flap portion may not be provided.

[0018]

The individual packaging structure of the absorbent article according to the present invention is such that the leak-proof property of the absorbent article does not decrease when the absorbent article is taken out from the individual packaging structure.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of an individual packaging structure of an absorbent article according to the present invention.

FIG. 2 is a cross-sectional view schematically showing a cross section taken along line XX of FIG. 1 omitting a cross-sectional structure of a sanitary napkin.

FIG. 3 is an exploded view of the individual packaging structure of the absorbent article shown in FIG.

FIG. 4 is a perspective view showing a mode of folding from the state shown in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Individual packaging structure 2 Sanitary napkin 21 Absorption layer 22 Top sheet 24 Leak prevention layer 25 Flap 26 Displacement prevention part 27a Side leakage prevention groove 27b Connection leakage prevention groove 28 Leak prevention wall 28a Elastic member 3 Packaging material 31 Front edge 32 Rear edge 33 Side edge 34 Fastening tape 35 Release tape 4 Bend 5 Sealing

Continuing on the front page (72) Inventor Satoshi Tanaka 2606 Kabane-cho, Akaga-cho, Haga-gun, Tochigi Prefecture Inside the Kao Corporation Research Laboratory (72) Inventor Satoru Kondo 2606 Kabashi-cho, Akaba-cho, Haga-gun, Tochigi Prefecture Kao Corporation Research Institute (72) Person Shinsuke Nagahara 2606 Kabane-cho, Akaga-cho, Haga-gun, Tochigi Pref. In the research center of Kao Corporation (72) Inventor Minoru Minato 2606 Akabane, Kaga-cho, Haga-gun, Tochigi pref.

Claims (3)

[Claims] An absorbent article comprising a liquid-absorbing absorbent layer and a liquid-impermeable leak-proof layer, wherein a substantially vertically elongated absorbent article is integrally folded with a packaging material and individually packaged. In the packaging structure, the absorbent layer has a plurality of side leakage prevention grooves formed in the longitudinal direction of the absorbent article and a width direction of the absorbent article so as to connect the respective side leakage prevention grooves. And a leakage-preventing wall having an elastic member is provided on both left and right sides of the absorbent article, wherein the absorbent article and the packaging material are formed of the elastic member. Two or more predetermined portions in a portion where there is no stretching force due to the bent portion are bent as at least one of the bent portions, and at least one of the bent portions is individually packaged with the absorbent article positioned so as to overlap the connection leak-proof groove. Construction. 2. The absorbent article according to claim 1, wherein a bulky portion is formed in a central region of the absorbent article, and at least one bent portion is provided so as to cross the bulky portion. Individual packaging structure. 3. The individual packaging structure for an absorbent article according to claim 2, wherein the bulky portion has a thickness of 3 mm or more.