JP3824556B2 - Absorbent packaging structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, the adhesive portion provided on the rear flap of the absorbent article is difficult to stick between the portions located on both sides of the folding line when the rear flap is folded, and the total area of the adhesive portion is sufficiently secured. The present invention relates to a packaging structure of an absorbent article that is less likely to cause turn-up and twisting of the rear flap during use of the absorbent article.
[0002]
[Prior art]
Conventionally, as a sanitary napkin, it has a liquid-permeable surface layer, a liquid-impermeable back layer, and a liquid-retaining absorbent layer interposed between these two layers, and when worn, it is positioned close to the wearer's back. 2. Description of the Related Art There are known rear side flaps that are fixed on the inner surface of clothing such as shorts on both sides of a rear portion that is arranged via an adhesive portion. This rear flap prevents the occurrence of so-called back leakage, in which menstrual blood or the like moves to the back side from the liquid excretion part and leaks during wearing.
[0003]
Conventionally, in a packaging structure in which such sanitary napkins are individually packaged, the sanitary napkin is folded in half in the longitudinal direction or folded in a state where the adhesive portion for fixing the rear flap is covered with a release sheet and protected. However, when the sanitary napkin packaging structure is to be made more compact, particularly when the number of times the napkin is bent in the longitudinal direction is set to 3 times or more, the adhesive portion has a rear flap. It often straddles both sides of the fold line when folded in the longitudinal direction, and in such a case, the crease attached to the rear flap causes the adhesive parts located on both sides of the fold line to stick to each other It was found that it took time to peel it off, and in some cases the napkin could not be used.
In order to solve such a problem, it is conceivable to provide the adhesive part at a location away from the fold line. In this case, the total area of the adhesive part is reduced, and the rear part is used during use of the napkin. The flap is likely to be turned over and twisted, and the wearing feeling may be deteriorated, or the leak prevention function of the rear flap may not be sufficiently exhibited.
[0004]
Therefore, the object of the present invention is that the adhesive part provided on the rear flap of the absorbent article is difficult to stick between the parts located on both sides of the folding line when the rear flap is folded, and the total area of the adhesive part is reduced. It is an object of the present invention to provide a packaging structure for absorbent articles that can be sufficiently secured and is less likely to cause back flap turning and twisting during use of the absorbent article.
[0005]
[Means for Solving the Problems]
The present invention comprises a liquid-permeable surface layer, a liquid-impermeable back layer, and a liquid-retaining absorbent layer interposed between the two layers, and is disposed at a position close to the wearer's back when worn. On both sides of the part, an absorbent article provided with a rear flap fixed on the inner surface of clothing such as shorts via an adhesive part is placed on the packaging material and folded together with the packaging material in the longitudinal direction, In the packaging structure of an absorbent article formed by sealing a predetermined portion of the packaging material, the absorbent article is folded in the longitudinal direction at least in the rear flap when folded together with the packaging material. A folding line is formed on the folding line, and the adhesive part is provided on both sides of the folding line in the longitudinal direction of the rear flap so as not to overlap the folding line. Covered with release sheet State, by providing a packaging structure of the absorbent article, characterized by being folded by an adhesive portion formed side inwardly by the folding line is obtained by achieving the above object.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on preferred embodiments thereof.
As shown in FIGS. 1 and 2, the absorbent article in the packaging structure of the present embodiment includes a surface sheet 2 as a liquid-permeable surface layer, a back sheet 3 as a liquid-impermeable back layer, and both of these layers. This is a sanitary napkin 1 that has an absorbent body 4 as a liquid-retaining absorbent layer interposed between and is formed substantially vertically.
The sanitary napkin 1 is disposed so as to face the front portion A disposed at a position closer to the wearer's ventral side during wear and the wearer's liquid drainage portion in order from one end portion to the other end portion in the longitudinal direction. It has a crotch part B and a rear part C arranged at a position closer to the wearer's back side.
[0007]
The top sheet 2 and the back sheet 3 that cover the absorbent body 4 and both surfaces thereof (skin contact surface and non-skin contact surface) are laminated as shown in FIG. 2, and the napkin is disposed at the center in the width direction of the napkin 1. A main body portion 10 extending in the longitudinal direction is formed.
The sanitary napkin 1 includes rear flaps 5 that extend from both longitudinal edges of the main body portion 10 on both sides of the rear portion C and are adhesively fixed on the inner surface of clothing such as shorts when worn. Yes.
[0008]
As shown in FIG. 2, the back sheet 3 in the rear part C has extended portions 31, 31 extending outward in the width direction from both side edges 41, 41 in the longitudinal direction of the absorbent body 4. A nonwoven fabric 51 for forming a flap is laminated on the skin contact surface side of each extending portion 31. The rear flap 5 is thus composed of a laminate of the extended portion 31 of the back sheet 3 and the nonwoven fabric 51 for forming the flap. In the nonwoven fabric 51, one side edge portion 51a near the center line L in the width direction of the napkin 1 is fixed between both side portions of the absorbent body 4 and the back sheet 3, and the edge portion excluding the one side edge portion 51a. 51 b is joined to the back sheet 3 at the peripheral edge of the napkin 1 to form the peripheral seal portion 8. In addition, the skin contact surface of the absorber 4 and the extension part 31 means the surface turned to a wearer's skin side at the time of wear in each.
[0009]
The back sheet 3 also has portions extending outward in the width direction from both side edges 41, 41 in the longitudinal direction of the absorbent body 4 at the front part A and the crotch part B of the napkin 1, A non-woven fabric 51 is also laminated on the extending portion, and a front flap 6 and a wing portion 7 are formed on the front part A and the crotch part B of the napkin 1, respectively. The wing part 7 has a wing part adhesive part 71 formed by applying an adhesive to one side of the wing part 7, and when the napkin is attached, the wing part 7 is bent from the base part and bent. 7 is fixed to the outer surface side of clothing such as shorts via a wing adhesive layer 71. The sanitary napkin 1 has a concave portion around the boundary between the rear flap 5 and the wing 7 in the longitudinal direction.
[0010]
Adhesive is applied to the rear flap 5 to form adhesive portions 52 and 53. The adhesive portions 52 and 53 are arranged such that the rear flap 5 is in the longitudinal direction as shown in FIGS. Are provided on both sides of the folding line L1 in the longitudinal direction of the rear flap 5 so as not to overlap with the folding line L1 when folded. More specifically, the first adhesive portion 52 is provided on the front side of the napkin 1 with respect to the fold line L1, and the second adhesive portion 53 is provided on the rear side of the napkin 1 with respect to the fold line L1, None of the adhesive portions 52, 53 overlaps (does not straddle) the fold line L1. The folding line L1 in the present embodiment is at a position slightly deviated toward the rear side of the napkin 1 from the central position where the rear flap 5 is equally divided into two in the longitudinal direction.
[0011]
The first and second adhesive portions 52 and 53 are separated from the folding line L1 by a distance L4 and L5 (FIG. 3) from the viewpoint of preventing the adhesive portions from sticking to each other and from preventing the rear flap 5 from turning and twisting. Is preferably 5 mm or more, particularly 10 to 30 mm.
The first and second adhesive portions 52 and 53 each have a length in the direction along the longitudinal direction of 20 to 20 from the viewpoint of preventing sticking between the adhesive portions and preventing the back flap 5 from being turned or twisted. 40 mm, particularly preferably from 25 to 35 mm, it is preferred each area 10~80cm ^2, in particular 30-60 cm ^2. Further, from the same viewpoint, in each rear flap, the total length of both adhesive portions 52 and 53 in the direction along the longitudinal direction is preferably 40 to 80 mm, particularly 50 to 70 mm. Is preferably ²⁰ to 160 cm ² , particularly preferably 60 to 120 cm ² .
[0012]
As shown in FIGS. 1B and 3, the first and second adhesive portions 52 and 53 are provided at positions where the rear flaps 5 do not overlap each other when folded along the fold line L <b> 1. Yes. More specifically, the rear flaps 5 are provided at different positions in the width direction of the rear flaps 5 so as not to overlap each other when folded along the folding line L1.
Therefore, it is possible to more reliably prevent sticking between the adhesive parts, and in particular, by providing them at different positions in the width direction so that they do not overlap. Even when the rear flaps overlap, the adhesives do not come into direct contact with each other, so that it is possible to prevent peeling off. In addition, by providing a plurality of pressure-sensitive adhesives in this manner, a wide area in the width direction and the longitudinal direction of the rear flap is fixed to the clothes, thereby improving the fixability of the rear flap.
[0013]
In order to prevent the adhesive portions 52 and 53 from overlapping each other when the rear flap 5 is folded along the fold line L1, the distance from the fold line L1 is changed to the two in place of the method of the present embodiment. A method in which the adhesive portions 52 and 53 are greatly different can also be used. For example, the first adhesive portion 52 is moved to the position indicated by 52a in FIG. 3 [the distance from the fold line L1 of the first adhesive portion (L4)> the distance from the fold line L1 of the second adhesive portion (L5) + It is provided at a position that becomes the length in the longitudinal direction (L6) of the second adhesive portion.
[0014]
In the packaging structure of the sanitary napkin 1 of the present embodiment, as shown in FIGS. 4 and 5, the wing portion 7 and the rear flap 5 are folded along both side edges of the main body portion 10 of the napkin 1, respectively. It is located on the top sheet 2 of the main body portion 10. The folded wing portion adhesive portion 71 of the wing portion 7 and the first and second adhesive portions 52 and 53 of the rear flap 5 are covered and protected by a single rectangular release sheet 12. Further, on the back sheet 3 side of the main body portion 10 of the napkin 1, a single rectangular packaging material 14 having a known tab tape 13 for fastening the packaging structure is disposed. On the surface of the main body portion 10 of the napkin 1 on the back sheet 3 side, an adhesive is applied in a vertically long rectangular shape to form a main body portion adhesive portion (not shown) for fixing the napkin to clothing such as shorts. The main body portion 10 is fixed to the inner surface of the packaging material 14 on which the peeling treatment has been performed via the main body portion adhesive portion. In addition, the peeling process of the packaging material 14 may be given to the whole area of the napkin mounting surface, and may be given only to the part corresponding to a main body part adhesion part.
[0015]
The sanitary napkin 1 in the packaging structure of the present embodiment is folded by being folded three times in the longitudinal direction together with the packaging material 14, and when the napkin 1 is folded, the rear flap 5 is folded once in the longitudinal direction. ing. A fold line L1 when the rear flap 5 is folded is a fold line indicated by a symbol L1 in each of FIGS. 1 and 3 to 5.
[0016]
The packaging structure of the sanitary napkin 1 of the present embodiment is obtained as follows, for example.
First, as shown in FIG. 4A, the sanitary napkin 1 is placed on the packaging material 14. In the state shown in FIG. 4A, the wing portion 7 and the rear flap 5 are folded back toward the topsheet 2 side of the main body portion 10 along both side edges of the main body portion 10. The step of folding the wing portion 7 and the rear flap 5 and the step of applying the adhesive for forming the wing portion adhesive portion 71 or the adhesive portions 52 and 53 are performed before the napkin 1 is placed on the packaging material 14, respectively. Or it can be done later.
[0017]
Moreover, the peeling sheet 12 is arrange | positioned on the wing part adhesion part 71 and the 1st and 2nd adhesion parts 52 and 53, and each adhesion part is adhered to the peeling sheet 12 so that peeling is possible. Thereby, each adhesion part is protected until the time of use of a napkin. In addition, in FIG. 4A, the arrangement | positioning location of the peeling sheet 12 is shown with the dashed-two dotted line.
[0018]
The sanitary napkin 1 is moved in the longitudinal direction along the folding line L1 extending in the width direction at a position slightly deviated closer to the rear end portion of the napkin 1 than the central position where the rear flap 5 is equally divided into two. Bend it. By this first folding, the portion indicated by the symbol D in the drawing in the vicinity of the rear end portion of the napkin 1 having the second adhesive portion 53 is folded back in the longitudinal direction and is located closer to the napkin front portion than that portion. Laminated on the part. At the time of this folding, the rear flap 5 is folded in the longitudinal direction along the folding line L1 together with the release sheet 12 and the packaging material 14.
[0019]
Next, as shown in FIG. 4B, the sanitary napkin 1 is folded in the longitudinal direction along a fold line L2 extending in the width direction in the vicinity of the boundary between the crotch part B and the rear part C. By this second folding, the portion indicated by symbol E in the figure is folded in a state where the portion indicated by symbol D is laminated, and is laminated on the portion indicated by symbol F in the drawing. Further, the sanitary napkin 1 is folded in the longitudinal direction along a fold line L3 extending in the width direction in the vicinity of the boundary portion between the front portion A and the crotch portion B. By this third folding, the portion indicated by the symbol G in the figure is folded back and laminated on the portion indicated by the symbol E in the drawing laminated on the portion indicated by the symbol F in the drawing.
[0020]
In this way, the sanitary napkin 1 is bent three times in the longitudinal direction and folded into a compact form.
Then, both sides of the packaging material 14 extending outward in the width direction from both side edges of the sanitary napkin 1 in such a folded state are sealed by a known method such as embossing, and the tab tape of the packaging material 14 The packaging structure of the sanitary napkin 1 shown in FIG. 4 (c) and FIG.
[0021]
According to the packaging structure of the sanitary napkin of this embodiment, the adhesive portions 52 and 53 of the rear flap 5 are not overlapped with the folding line L1 when the rear flap 5 is folded in the longitudinal direction. Since it is provided on both sides of the fold line L1 in the longitudinal direction, when the napkin is taken out from the packaging material, the adhesive portions located on both sides of the fold line are stuck to each other even if the back flap 5 is folded. There is no fear of sticking. Therefore, there is no inconvenience that it takes time to peel off the attached adhesive portions, and the napkin is difficult to use or cannot be used.
In addition, since the adhesive portions 52 and 53 are provided on both sides of the folding line L1, it is possible to sufficiently secure the total area of the adhesive portions. Therefore, when worn on the garment, there are no inconveniences such as turning and twisting on the rear flap 5 to deteriorate the feeling of wearing, and the leak prevention function of the rear flap is not sufficiently developed.
[0022]
As a forming material of each part of the packaging structure of this embodiment, what is conventionally used for the packaging structure of a sanitary napkin can be used without particular limitation. For example, as the release sheet, paper or resin film subjected to a known release process, a laminate of these, or the like can be used.
[0023]
In addition, the packaging structure of the absorbent article of this invention is not restrict | limited to said embodiment, In the range which does not deviate from the meaning of this invention, it can change variously.
For example, the first and second adhesive portions 52 and 53 of the sanitary napkin 1 in the above embodiment are all the same rectangular shape, but the length, width, shape, and the like may be different between the two adhesive portions. . Moreover, the 1st adhesion part 52 of the sanitary napkin 1 can also be provided, for example in the position shown with the code | symbol 52b in FIG.
[0024]
The rear flap 5 of the sanitary napkin 1 in the above embodiment is composed of a laminated body of the extended portion 31 of the back sheet and the nonwoven fabric 51 for forming the flap, and the top sheet 2 and the back sheet 3 absorb each. The rear flap 5 may be formed by the both sheets 2 and 3 extending outward from the both side edges of the body 4 in the width direction. Further, a sheet material for forming a three-dimensional gather having an elastic member is provided on both sides of the main body portion 10 to provide a three-dimensional gather, and the sheet material is extended outward in the width direction from both side edges of the absorbent body 4. Then, the extended portion and the extended portion of the back sheet 3 can be laminated to form the rear flap.
[0025]
Further, in the packaging structure of the above embodiment, the sanitary napkin 1 is folded by bending it three times in the longitudinal direction, but as long as the rear flap 5 is folded one or more times in the longitudinal direction, the number of times the napkin is folded is particularly It is not restrict | limited, For example, you may be bent twice (three folds) or 4 times or more. Further, the sanitary napkin 1 may be one that does not have the front flap 6 and / or the wing portion 7 instead of the one having the front flap 6 and the wing portion 7.
Moreover, the packaging material 14 is not subjected to the release treatment, and a release sheet may be bonded thereto. Further, when a part of the release sheet 12 is fixed to the packaging material 14 and the absorbent article is taken out from the absorbent article packaging structure, the release sheet 12 is automatically adhered only by separating the packaging material 14 and the absorbent article. It is good also as the form which made it easy to take out by peeling from a part, and the form which improved the ease of disposal, without joining the packaging material 14 and the peeling sheet 12. FIG.
Examples of the absorbent article of the present invention include sanitary napkins, panty liners, incontinence pads and the like.
[0026]
【The invention's effect】
The packaging structure of the absorbent article of the present invention is such that the adhesive part provided on the rear flap of the absorbent article is difficult to stick between the parts located on both sides of the folding line when the rear flap is folded, and The total area can be secured sufficiently, and the rear flaps are not turned over or twisted during use of the absorbent article.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a sanitary napkin as an example of an absorbent article, FIG. 1 (a) is a plan view, and FIG. 1 (b) is a bottom view.
FIG. 2 is a cross-sectional view schematically showing an XX cross section of FIG. 1;
FIG. 3 is an enlarged view of a main part showing an enlarged portion surrounded by a circle P in FIG. 1 (b).
FIG. 4 is a schematic process diagram showing a manufacturing process of a sanitary napkin packaging structure, FIG. 4 (a) is a state in which a sanitary napkin is placed on a packaging material, and FIG. The sanitary napkin is folded in the longitudinal direction together with the packaging material, and FIG. 4C is a view showing a state where the packaging structure of the sanitary napkin is completed.
FIG. 5 is a view showing a sanitary napkin packaging structure as an embodiment of the present invention, and is a cross-sectional view schematically showing a YY cross section of FIG. 4 (c).
[Explanation of symbols]
1 Sanitary napkin (absorbent article)
2 Top sheet (surface layer)
3 Back sheet (back layer)
4 Absorber (absorbing layer)
5 Rear flap 52 First adhesive part 53 Second adhesive part L1 Folding line A when the rear flap is bent Front part B Crotch part C Rear part

Claims (5)

Both sides of the rear part, which is provided with a liquid-permeable surface layer, a liquid-impermeable back layer, and a liquid-retaining absorbent layer interposed between the two layers, and is disposed at a position closer to the wearer's back when worn In addition, an absorbent article having a rear flap fixed on the inner surface of clothing such as shorts through an adhesive portion is placed on the packaging material, folded together with the packaging material in the longitudinal direction, In the packaging structure of the absorbent article formed by sealing a predetermined location,
When the absorbent article is folded together with the packaging material, at least the rear flap is folded in the longitudinal direction to form a fold line in the rear flap,
The adhesive portion is provided on both sides of the fold line in the longitudinal direction of the rear flap so as not to overlap the fold line,
A packaging structure for absorbent articles, wherein the rear flap is folded with the fold line facing the adhesive portion forming side in a state where the adhesive portion is covered with a release sheet. The absorbent article packaging structure according to claim 1, wherein the two adhesive portions provided on both sides of the fold line are provided at positions where the rear flaps do not overlap each other when folded along the fold line. . The packaging structure for absorbent articles according to claim 2, wherein the two adhesive portions provided on both sides of the fold line are provided at different positions in the width direction of the rear flap. The absorbent article packaging structure according to any one of claims 1 to 3, wherein the absorbent article is folded by being folded three times or more in the longitudinal direction. The absorbent article packaging structure according to any one of claims 1 to 4, wherein the rear flap is covered with the release sheet in a state where the rear flap is folded toward the surface layer side or the back surface layer side.

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