JPH1075975A - Sanitary napkin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the peel-off operation of the protective sheet of a sanitary napkin in relation with another operation. SOLUTION: This sanitary napkin 2 is provided with a rear part flap 210 on a position biased to a rear part and is provided with an adhesive layer 244 so as to hold the rear part flap in a spread state inside underwear. A rear part protective sheet 250 for protecting the adhesive layer is provided with a free end part unfoldable to the outer side in the side direction of the sanitary napkin at the time of detaching the sanitary napkin from the rear part protective sheet and an inclination part inclined to the side direction of the sanitary napkin in the intermediate part of an end edge 254. Before using the sanitary napkin, the rear part flap is folded back to the inner side in the side direction of the sanitary napkin along a sanitary napkin main body and further, the free end part of the rear part protective sheet is piled up on the adhesive layer of the folded-back rear part flap. The inclination part of the end edge is arranged at a part crossed with the folded-back part 24 of the rear part flap.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary napkin worn on a female body and used for absorbing body fluids. More specifically, an adhesive layer provided on the side facing the undergarment such as a flap provided in a form extending laterally outward from both side edges of the sanitary napkin body at a position biased rearward of the sanitary napkin. The present invention relates to a sanitary napkin provided with a protective sheet for protection.

[0002]

2. Description of the Related Art Sanitary napkins are worn on female bodies and used as a means for absorbing body fluids.
The sanitary napkin of the first embodiment has a flap provided so as to extend outward from both sides at the center in the longitudinal direction of the sanitary napkin main body. This type of flap is used by folding around a leg opening of underwear when using a sanitary napkin. On the side facing the underwear of the flap, an adhesive layer for fixing the flap to the outer surface of the underwear is attached. Before using the sanitary napkin, a protective sheet for protecting the adhesive layer is attached to the adhesive layer so that the adhesive layer does not adhere to other parts. For example,
The protective sheet disclosed in Japanese Patent No. 26833 and Japanese Utility Model Application Laid-Open No. 6-26835 has at least two protective sheets. That is, it has a body protection sheet for protecting the adhesive layer on the back surface of the sanitary napkin main body, and a flap protection sheet for protecting the adhesive layer provided on the flap folded on the top sheet of the sanitary napkin. Further, the protective sheet disclosed in Japanese Utility Model Laid-Open No. 5-9529 consists of one protective sheet as a whole. That is, the first portion protecting the adhesive layer provided on the back surface of the sanitary napkin body, and the second portion extending at right angles to the first portion and protecting the adhesive layer provided on the back surface of the flap. Become.

[0003] The sanitary napkin of the second embodiment has a flap extending laterally outward from both side edges of the sanitary napkin main body at a position biased rearward of the sanitary napkin.
This type of flap is used while being spread in underwear when using a sanitary napkin. Such a flap is disclosed in Japanese Utility Model Laid-Open No. 7-12120, Japanese Utility Model Laid-Open No. 7-33314, and the like.

[0004]

The sanitary napkin of the first embodiment, which has two protective sheets, needs to be removed separately, which is troublesome.
There is a possibility that the second portion extending in the perpendicular direction at the time of removal may be torn or may not be peeled off properly even if it is configured as a single protective sheet. Furthermore, these prior arts do not mention the application of the above-described sanitary napkin of the second embodiment.

[0005] Further, the prior art of the second embodiment does not mention that an adhesive layer is provided for the purpose of keeping the flap provided behind the sanitary napkin in an undergarment in a spread state.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a protective sheet for protecting an adhesive layer provided on a back surface of a flap extending laterally outward from both side edges of a sanitary napkin at a position deviated rearward of the sanitary napkin. The peeling operation is related to other operations, for example, an operation of peeling a protective sheet for protecting an adhesive layer provided on the back of the sanitary napkin main body from the sanitary napkin, or pulling a sanitary napkin package from the sanitary napkin. An object of the present invention is to provide a sanitary napkin configured to be able to perform in connection with a peeling operation.

[0007]

A sanitary napkin according to the present invention comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core disposed between the sheets. In a sanitary napkin having a napkin body and a rear flap extending laterally outward from both side edges of the sanitary napkin at a position biased rearward of the sanitary napkin, the sanitary napkin further includes the rear flap. An adhesive layer provided on the underwear-facing surface side of the rear flap for holding the spread state in the underwear, and a rear protective sheet for protecting the adhesive layer before use of a sanitary napkin, wherein the rear protective sheet Has a free end that can be deployed laterally outward of the sanitary napkin when the sanitary napkin is removed from the rear protection sheet to use the sanitary napkin, Also, at least a part of the middle portion of the one edge has an inclined portion inclined with respect to the lateral direction of the sanitary napkin, and before use of the sanitary napkin, the rear flap is arranged along the sanitary napkin main body. The sanitary napkin is folded inward in the lateral direction, the free end of the rear protective sheet is overlapped with the adhesive layer of the folded rear flap, and at least one edge of the rear protective sheet is folded back. The inclined portion is disposed at a portion intersecting the portion.

[0008] The sanitary napkin of the present invention further comprises a front flap extending laterally outward from both side edges of the sanitary napkin main body in front of the sanitary napkin in the longitudinal direction;
An adhesive layer provided on the underwear facing surface side for holding the front flap in a folded state around the opening side edge of the underwear, and a front protection sheet for protecting the adhesive layer before using a sanitary napkin, The front protection sheet has a free end that can be deployed laterally outward of the sanitary napkin when the sanitary napkin is removed from the front protection sheet in order to use the sanitary napkin, and at least an intermediate portion of at least one edge. The sanitary napkin has a slant portion inclined with respect to the lateral direction of the sanitary napkin, and before use of the sanitary napkin, the front flap is folded back inward along the sanitary napkin body in the lateral direction of the sanitary napkin. The free end of the front protection sheet is overlapped on the adhesive layer of the folded front flap, and at least one edge of the front protection sheet is a front flap. The inclined portion at the intersection with the folded portion may be disposed of. The inclined portion of the front protective sheet and the inclined portion of the rear protective sheet may be inclined in the same direction with respect to the lateral direction of the sanitary napkin. The front protection sheet and the rear protection sheet may be formed in the same shape. The sanitary napkin may be packaged by a package, and the rear protective sheet and the front protective sheet may be connected to the package. The sanitary napkin is folded in three along a line that substantially divides the sanitary napkin into three along its longitudinal direction, and the rear protective sheet is disposed in one end of the sanitary napkin whose most part is folded in three. It may be configured to extend. The folded portion of the rear protection sheet folded along the folded portion of the rear flap may be configured to extend only into the one end. The rear protection sheet may be configured to be entirely extended only in the one end. The front protective sheet may be configured to extend into a central portion of the sanitary napkin, most of which is folded. The folded portion of the front protection sheet folded along the folded portion of the front flap may be configured to extend only into the central portion. The front protection sheet may be configured to be entirely extended only in the central portion.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment of a sanitary napkin constructed according to the present invention.

In FIG. 1, reference numeral 2 denotes a sanitary napkin according to the first embodiment.
As shown in FIG. 1, the liquid crystal display device includes a liquid-permeable top sheet 4, a liquid-impermeable back sheet 6, and an absorbent core 8 disposed between the top sheet 4 and the back sheet 6.

It is important that the top sheet 4 allows the body fluid discharged from the user to quickly penetrate into the absorbent core 8 and does not cause excessive discomfort to the wearer when coming into contact with the wearer's skin. It is. The top sheet 4 is made of, for example, a woven or non-woven fabric made of natural fibers or synthetic fibers, a thermoplastic synthetic resin film in which a number of small holes are formed,
It can be conveniently formed from a porous synthetic resin foam, a reticulated synthetic resin foam, a reticulated thermoplastic synthetic resin film, or a thermoplastic synthetic resin scrim.

The back sheet 6 allows the user to absorb the liquid absorbed by the absorbent core 8 and flow out of the sanitary napkin and / or the user.
Alternatively, it is important to have a function of preventing the clothes of the wearer from being contaminated. The backsheet 6 can be conveniently formed from a flexible liquid-impermeable thermoplastic synthetic resin film such as a polyolefin film. A particularly preferred film for forming the backsheet 6 is a low density polyethylene film having a thickness of 0.01 to 0.05 mm, especially about 0.025 mm (such polyethylene film is available from Esil Corp. under the trade name "Model XP-39385"). And Cropey in Cincinnati, Ohio, USA
Sold by Corp. as "SOF FLEX 1401").

It is important that the absorbent core 8 has a function of absorbing and retaining body fluid discharged from the wearer and transmitted through the top sheet 4. Such an absorbent core 8
For example, shredded wood pulp called air felt, creped cellulose wadding, meltblown polymer, chemically stiffened, deformed or crosslinked cellulose fiber, absorbent synthetic resin foam, tissue paper layer, or absorbent It can be conveniently formed from a gelled (absorbing liquid into a gel) material or an appropriate combination of these.

The outer shape of the sanitary napkin 2 is defined by both side edges 30 extending in the longitudinal direction of the sanitary napkin 2 and both end edges 32 and 33 extending in a direction perpendicular to the longitudinal direction. In this specification, the “longitudinal direction”
When the sanitary napkin 2 is worn by the user,
The direction coincides with the front-back direction of the body. Therefore, in FIG. 1, the “longitudinal direction of the sanitary napkin” is the direction in which the virtual line X indicated by the dashed line extends. Further, in this specification, the "center line in the longitudinal direction" means a center line extending in the longitudinal direction of the sanitary napkin, and coincides with a virtual line X indicated by a dashed line in FIG. "Back of the sanitary napkin" means the portion of the sanitary napkin corresponding to the rear portion of the body when the sanitary napkin 2 is worn by the user. The term "in front of the sanitary napkin" means a portion of the sanitary napkin located in front of the body except for the "rearward portion of the sanitary napkin" when the sanitary napkin 2 is worn by a user. . Further, the “lateral direction” refers to a direction perpendicular to the “longitudinal direction”. Therefore, the “lateral direction of the sanitary napkin” is a direction perpendicular to the direction in which the imaginary line X by the dashed line extends.

The top sheet 4 and the back sheet 6 are formed so as to match the outer shape of the sanitary napkin 2.
The side edges of the topsheet 4 and the backsheet 6 at the rear portion of the sanitary napkin 2 extend laterally outward from the side edges 14 of the absorbent core 8 to form a pair of rear flaps 210. Also, both side edge portions of the top sheet 4 and the back sheet 6 in the front portion of the sanitary napkin 2 extend laterally outward from both side edges 14 of the absorbent core 8, thereby forming a pair of front flaps 10. ing. The rear flap 210 is used for the sanitary napkin 2.
When used, it is held to spread over the inner surface of the underwear. As a result, the effect of preventing leakage from the rear portion of the sanitary napkin 2 is enhanced. Front flap 1
When the sanitary napkin 2 is used, 0 is used by being folded around the leg opening of the underwear. Thereby, the effect of preventing leakage from the front portion of the sanitary napkin 2 is enhanced. A heat-sealed region 12 continuously heated and fused to the outer periphery of the top sheet 4 and the outer periphery of the back sheet 6
have. Further, in a region 16 along both side edges 14 of the absorbent core 8, the topsheet 4 and the backsheet 6
Is heated and fused. If desired, the topsheet 4 and the backsheet 6 can be interconnected in any other suitable manner, such as by adhesive bonding.

An adhesive layer is provided on the backsheet 6 side of the sanitary napkin 2 and in contact with the user's underwear. First, on the back sheet 6 side corresponding to the area of the absorbent core 8, four adhesive layers 38, 40, 42, and 240 are provided at intervals along the longitudinal direction of the absorbent core 8. These adhesive layers 38, 40, 42, 240 are used for fixing the sanitary napkin 2 to the inner surface of the crotch region of the underwear. These adhesive layers 38, 40, 42, 240 may be one continuous adhesive layer along the longitudinal direction of the sanitary napkin 2. In that case, the protective sheet described later is formed in a size that can protect one continuous adhesive layer. An adhesive layer 44 is provided on the back sheet 6 corresponding to the area of the front flap 10. This adhesive layer 4
Reference numeral 4 is used to fix the front flap 10 to the outer surface of the underwear when the front flap 10 is folded back to the outer surface of the underwear. Further, an adhesive layer 244 is provided on the side of the back sheet 6 corresponding to the region of the rear flap 210. The adhesive layer 244 is used to fix the rear flap 210 to the inner surface of the underwear so that the rear flap 210 is spread on the inner surface of the underwear. Such an adhesive layer is available from Century Adhesive Corp. of Columbus, Ohio, USA.
"tury Adhesive A-305-IV" may be suitably used.

The sanitary napkin 2 is packaged by the packaging film 20 so as to be an individual sanitary napkin unit. At a substantially central portion in the width direction of the upper edge 26 of the packaging film 20, a peeling tape 34 used when unpacking the packaging film 20 is attached. The packaging film 20 has a rectangular shape extending along the longitudinal direction of the sanitary napkin 2 as shown in FIG. Further, as shown in FIG. 3, both side edges 22 of the packaging film 20 extend further laterally outward than the folded portions 24 of the flaps 10, 210 when the front flap 10 and the rear flap 210 are folded. On the other hand, packaging film 2
2 extends further beyond the edge 32 of the sanitary napkin 2 in FIG. The lower edge 28 of the packaging film 20 in FIG. 2 has a length substantially matching the edge 33 of the sanitary napkin 2 in the illustrated embodiment. Materials suitable for such a packaging film 20 include materials such as polyethylene and polypropylene. Further, as the package, the same material as a protective sheet described later can be used instead of the packaging film.

In the embodiment of FIG. 2, the upper edge 26 of the packaging film 20 extends outward beyond the edge 32 of the sanitary napkin 2. However, the upper edge 26 of the packaging film 20 may be formed shorter than the edge 32 of the sanitary napkin 2. Further, the lower edge 28 may extend outward beyond the edge 33 of the sanitary napkin 2. Alternatively, as long as the sanitary napkin 2 is packaged by the packaging film 20 so that the sanitary napkin 2 is not exposed to the outside by the upper edge 26 and the lower edge 28 of the packaging film 20, the lower edge of the packaging film 20 may be used. 28 may be shorter than the edge 33 of the sanitary napkin 2. That is, as long as care is taken to prevent the sanitary napkin 2 from being exposed to the outside when the sanitary napkin 2 is packaged, the upper edge 26 and the lower edge 2
The extension width with 8 can be appropriately selected.

On the inner surface side of the packaging film 20, that is, on the side in contact with the sanitary napkin 2, each of the adhesive layers 38, 40, 42, 24 provided on the back sheet side of the sanitary napkin 2.
A protection sheet for protecting 0, 44, 244 is attached.

The protective sheets 46 and 48 are provided with adhesive layers 38, 4
2 are attached to the inner surface of the packaging film 20 respectively. The protection sheets 46 and 48 are large enough to sufficiently protect the adhesive layers 38 and 42, and have a rectangular shape as shown in FIG. Each protective sheet 46, 48 is fixed to the packaging film 20 by two adhesive lines 52 extending along the longitudinal direction of the sanitary napkin 2. Instead of two adhesive lines 52,
The number of adhesive lines may be one or three or more. The protective sheets 46 and 48 are made of the adhesive layer 38 of the sanitary napkin 2;
The side facing 42 is preferably treated with a release agent such as silicone. As a material suitably used for the protection sheets 46 and 48, a normal paper material may be used.
Akrosil MGA Silox in the United States
C3R / 0 "can be used. Furthermore, it is also possible to form a protective sheet with the same material as the above-mentioned packaging film. These protection sheets 46, 48
A front protection sheet 50 or a rear protection sheet 25 described later.
It may be connected to any one of 0 or both. Further, by applying a release agent such as silicone to a region of the packaging film 20 corresponding to each of the adhesive layers 38 and 42, the protective sheets 38 and 42 can be omitted. Further, both or one of the adhesive layers 38 and 42 can be omitted, and when both or one of them is omitted, the protective sheets 46 and 48 can be omitted correspondingly.

The front protective sheet 50 includes the adhesive layers 40 and 44.
Is attached to the inner surface of the packaging film 20 in a form corresponding to the above. The rear protective sheet 250 includes an adhesive layer 240,
244 is attached to the inner surface of the packaging film 20. Front protection sheet 50 and rear protection sheet 2
Reference numeral 50 is formed in the same shape in the embodiment shown in FIG. Therefore, in the following description, the rear protection sheet 250 provided in a form corresponding to the rear flap 210 will be described. And the rear protection sheet 25
Reference numerals of the respective portions of the front protection sheet 50 corresponding to the respective portions of 0 are shown in parentheses in the following description.

As shown in FIG. 2, the rear protective sheet 250 (50) has a substantially circular arc-like overall shape. More specifically, the rear protective sheet 250 (50)
Is defined by a pair of side edges 253 (53) extending in the same direction as the longitudinal direction of the sanitary napkin 2, and a pair of end edges 254, 256 (54, 56) connecting the pair of side edges. ing. As shown in FIG. 2, the edge 254 (54) has an arc portion 257 (57) inclined with respect to the lateral direction of the sanitary napkin 2, and straight ends 259 located on both sides of the arc portion 257 (57). (59).
Edge 256 (56) also has an arc portion 261 (61),
Straight ends 26 located on both sides of the arc portion 261 (61)
3 (63). Each arc part 257 (57)
And 261 (61) are curved in the longitudinal direction of the sanitary napkin 2 in the same direction and are separated by a fixed distance,
The area sandwiched by these is the rear protection sheet 250
The main part 265 (65) having the arc shape of (50) is formed. The straight ends 259 (59) and 263 (63) are also spaced apart from each other by a fixed distance, and the area sandwiched therebetween is the vertical protruding piece 26 of the rear protection sheet 250 (50).
0 (60) and 262 (62). Straight end 259,
The vertical projecting pieces 260 (60), 262 (62) are associated with the main body portion 265 in connection with the fact that the 263 (59, 63) is arranged in a direction parallel to the lateral direction of the sanitary napkin 2. It protrudes perpendicularly to the longitudinal direction of the sanitary napkin 2 from (65). In this embodiment, the left and right straight ends 259, 259 (59, 59) and 263, 26
3 (63, 63) have different lengths, but are not limited thereto, and may be configured so that the right and left straight ends have the same length.

An arc portion 257 (57) at one edge 254 (54) of the rear protective sheet 250 (50).
Reduces the resistance when the sanitary napkin 2 is peeled off from the packaging film 20. This arc 257 (57)
Has an inclined portion on the left and right in FIG. 2 symmetrically with respect to the longitudinal center line X of the sanitary napkin. Arc part 257
The inclined portion in (57) has a starting point 269 (6
9), an end point 271 (71), and an inclined line 275 (75) connecting these two points. In the embodiment of FIG. 2, the starting point 269 (69) is located on the longitudinal center line X of the sanitary napkin 2. The slope line 275 (75)
With respect to the horizontal line 273 (73) passing through the start point 269 (69), the end point 271 (71) side is inclined in a direction away from the horizontal line. In other words, the inclined line 275 (75)
Is the horizontal line 273 (73) passing through the starting point 269 (69)
In contrast, the end point 271 (71) side has the adhesive layer 244 (4
It is inclined in the direction approaching 4). Furthermore, this slope line 2
75 (75) is the horizontal line 2 passing through the starting point 269 (69)
With respect to 73 (73), the end point 271 (71) side is inclined so as to face in the same direction as the direction Z (see FIGS. 1 and 2) in which the sanitary napkin 2 is peeled off from the packaging film 20. The inclined line 275 (75) is
It is preferable that the edge 254 (54) of the 50 (75) is provided corresponding to at least a portion that intersects the folded portion 24 of the flap 210 (10). The arc portion 257 (57) having such an inclined portion is used by the sanitary napkin 2 by the action of the arc portion 257 (57) as described later.
The resistance at the time of peeling can be reduced. Also, one edge 254 (5) of the rear protection sheet 250 (50)
The straight end 259 (59) in 4) has a slope 275
It extends outward from the end point 271 (71) of (75) to the side edge 253 (53). 2, the inclined line 75 of the front protection sheet 50 and the rear protection sheet 275
The inclined line 275 is inclined in the same direction in the longitudinal direction of the sanitary napkin as viewed from the horizontal lines 73 and 273.

In the embodiment of FIG. 2, the inclined line 275 (75)
Was constituted by a part of an arc, but is not limited to this.
A part of the edge 254 (54) may be constituted by an inclined straight line. The other edge 256 (56) of the rear protective sheet 250 (50) may be formed in the same shape as the edge 254 (54). However, it is not limited to this,
For example, the edge 256 (56) is an arc portion 261 (61).
It may be a straight line extending in the lateral direction of the sanitary napkin that does not have a napkin. Further, as described above, the rear protection sheet 250 and the front protection sheet 50 do not need to have the same shape. For example, the edge 254 of the rear protection sheet 250 may be an arc-shaped slope, while the edge 54 of the front protection sheet 50 may be a straight slope.

The front protection sheet 50 and the rear protection sheet 250 are arranged as follows. That is, the sanitary napkin 2 is divided into a front portion 70, a central portion 72, and a rear portion 74 by three folding lines 66 and 68 of the sanitary napkin 2 described later. The front protection sheet 50 is provided in a form corresponding to the central portion 72 in the sanitary napkin 2.
The rear protective sheet 250 is positioned at the rear portion 74.
Is located on the sanitary napkin 2 in a form corresponding to.

The size of the rear protective sheet 250 can be appropriately selected according to the size of the sanitary napkin 2 or the size of the packaging film 20. The size of the rear protection sheet 250 is not essential, but is preferably set as follows. That is, the rear protection sheet 2
Preferably, 50 extends only within rear portion 74 such that it does not intersect trifold line 68 of sanitary napkin 2 in the longitudinal direction of sanitary napkin 2. More preferably, the total length S of the rear protective sheet 250 in the same direction as the longitudinal direction of the sanitary napkin 2 is set shorter than the length T between the three-fold line 68 of the sanitary napkin 2 and the edge 28 of the packaging film 20. It is preferred that The width P of the rear protective sheet 250 in the lateral direction of the sanitary napkin 2 is equal to or greater than the width R between both outer sides of the adhesive layer 244 provided on the back surface of the rear flap 210, and more preferably the rear flap of the sanitary napkin 2. It is preferable to have a width that is at least twice the width Q between the folds 24 of the 210. When the length S of the rear protective sheet 250 is set as described above, the sanitary napkin 2 is folded into three and the packaging film 2 is folded.
When wrapped in zero, the rear protection sheet 250 is not folded. Therefore, normally, it is not necessary to fold the rear protective sheet 250 made of paper, and the sanitary napkin 2 can be smoothly folded. If the width P of the rear protection sheet 250 is set as described above, the rear protection sheet 250
Layer 244 securely provided on the rear flap 210
Can be protected, and furthermore, the rear protection sheet 250
When the rear protective sheet 25 is folded as described later,
Thus, the zero vertical protruding pieces 260 and 262 can be connected to each other (see FIG. 3). The rear protective sheet 250 having the inclined portion has the vertically projecting pieces 26 on both side edges thereof.
By providing 0 and 262, the width P of the rear protection sheet 250 can be sufficiently ensured, but it is also useful to keep the length S short.

The size of the front protection sheet 50 can be appropriately selected according to the size of the sanitary napkin 2 or the size of the packaging film 20. In the embodiment of FIG. 2, the front protection sheet 50 has the same shape as the rear protection sheet. Therefore, the overall length of the front protection sheet 50 in the same direction as the longitudinal direction of the sanitary napkin 2 and the width of the front protection sheet 50 in the lateral direction of the sanitary napkin 2 are the same as those of the rear protection sheet 250. Front protection sheet 5
0 preferably extends only within the central portion 72 so as not to intersect the trifold lines 66, 68 of the sanitary napkin 2 in the longitudinal direction of the sanitary napkin 2. More preferably, the total length of the front protection sheet 50 in the same direction as the longitudinal direction of the sanitary napkin 2 is preferably set shorter than the length between the three fold lines 66 and 68 of the sanitary napkin 2. It is preferable that the width of the front protection sheet 50 in the lateral direction of the sanitary napkin 2 is set similarly to that of the rear protection sheet 250.

The rear protective sheet 250 (50) is provided with two adhesive lines 5 extending along the longitudinal direction of the sanitary napkin 2.
It is fixed to the packaging film 20 by 2. Instead of two adhesive lines 52, one or three or more adhesive lines may be used. Rear protection sheet 250 (50)
Moves the rear protective sheet 250 (50) approximately two in the longitudinal direction.
The dividing center line is the longitudinal center line X of the sanitary napkin 2.
Is fixed to the packaging film 20 so as to coincide with the above. This adhesive wire 52 is provided in the folded portion 2 of the front flap 10 and the rear flap 210 in the lateral direction of the sanitary napkin 2.
4 is located inside. The portion of the rear protective sheet 250 (50) outside the adhesive wire 52 is
You are free to move. Rear protection sheet 250
(50) Adhesive layers 240 and 244 of sanitary napkin 2
The side facing (40, 44) is treated with a release agent such as silicone. The adhesive layer 240 (40) provided on the back surface of the sanitary napkin 2 can be omitted. When this adhesive layer is omitted, the above-described treatment with the release agent corresponds to the adhesive layer 244 (44). It can be applied only to the part. As a material suitably used for the rear protective sheet 250 (50), a normal paper material may be used, and “MGA Silox” manufactured by Akrosil Co., Ltd., USA
C3R / 0 "can be used. Furthermore, it is also possible to form a protective sheet with the same material as the above-mentioned packaging film.

The above-described sanitary napkin 2, packaging film 20, front protection sheet 50, and rear protection sheet 250
Although it is not essential, it is preferable to assemble in the following order.

First, the sanitary napkin 2 is assembled in a product state. Then, the protective sheet 4 is placed on the sanitary napkin 2.
6 and 48 are attached, and the front protection sheet 50 and the rear protection sheet 250 are further attached. Then, after the flap 10 is folded, the packaging film 20 is attached to the sanitary napkin 2. Finally, the sanitary napkin 2 is folded into three to complete the individually packaged sanitary napkin.

This will be described in more detail. The protective sheet 46 is coated with the corresponding adhesive layer 38. After the protective sheet 46 having the adhesive layer is cut to a length to be applied to a product, a predetermined interval is provided between the preceding protective sheet 46 after cutting and the following protective sheet 46. Thereby, the protection sheet 46 is attached to an appropriate position of the sanitary napkin 2 that is continuously conveyed, and the surface of the protection sheet 46 on which the adhesive layer 38 is applied faces the backsheet side of the sanitary napkin 2. Mounted. Similarly, the protection sheet 48 is attached to the back sheet 6 side of the sanitary napkin 2.

Next, the front protective sheet 50 is similarly coated with the adhesive layers 40 and 44 and an adhesive 64 described later. Then, after being cut to the length applicable to the product, a predetermined interval is provided between the preceding front protection sheet 50 after cutting and the following front protection sheet 50. As a result, the front protection sheet 50 is attached to an appropriate position of the sanitary napkin 2 that is continuously conveyed, and the surface of the front protection sheet 50 to which the adhesive layers 40 and 44 are applied is attached to the back of the sanitary napkin 2. Installed facing the seat.

The rear protective sheet 250 is also the front protective sheet 5
In the same manner as in No. 0, the sanitary napkin 2 is attached to the back sheet 6 side. Sanitary napkin 2 with front protection sheet 50
And the device for attaching the rear protection sheet 250 may have the same configuration, and these two devices may be arranged in series in the transport direction of the sanitary napkin 2. Further, in the present embodiment, the front protection sheet 50 and the rear protection sheet 250 have the same shape. Therefore, it is also possible to prepare only one device for attaching the protective sheet to the sanitary napkin, and to operate the device twice while one sanitary napkin 2 passes through the device. As a result, the protection sheets 50 and 250 are attached to the sanitary napkin 2 by one device. The adhesive layer 4
4 and the adhesive layer 244, and the adhesive layer 40 and the adhesive layer 2
By making the shape of the adhesive layer 40 and that of the adhesive layer 40 the same, it is possible to use only one coating device for the adhesive layer.

Since a release agent such as silicone is applied to the surface of each of the protective sheets 46, 48, 50, and 250 facing the sanitary napkin 2, each of the protective sheets 46, 48, 50, and 250 is coated.
When 0,250 is attached to sanitary napkin 2, the adhesive layer is substantially transferred to sanitary napkin 2. When the protective sheets 46, 48, 50, 250 are removed from the sanitary napkin 2, each adhesive layer functions as an adhesive layer of the sanitary napkin 2.

Next, each protective sheet 46, 48, 50, 2
The front flap 10 of the sanitary napkin 2 to which the 50 is attached is folded back to the top sheet 4 along both side edges of the absorbent core 8 at the flap folded portion 24. At the same time that the front flap 10 is folded back to the top sheet 4 side,
The free end of the front protection sheet 50 projecting laterally outward from the folding portion 24 is also folded back to the top sheet 4 side. The free end may be folded back to the topsheet 4 side after the front flap 10 is folded back to the topsheet 4 side. The vertical protruding pieces 60 and 62 of the front protection sheet 50 are fixed to each other by an adhesive 64. As a result, as shown in FIG. 3 and FIG.
The flap 10 is folded on the top sheet 4 side of the sanitary napkin 2, and a front protection sheet 50 is further folded and fixed thereon. The free ends of the rear flap 210 and the rear protection sheet 250 are similarly folded back to the top sheet 4 side and fixed to each other by the adhesive 264.

Thereafter, each of the protective sheets 46, 48, 50,
The packaging film 20 to which the adhesive is applied at the position corresponding to the adhesive line 52 of 250 is provided with the protective sheets 46, 48, 5 attached to the back sheet 6 side of the sanitary napkin 2.
0, 250. Then, as shown in FIG. 3, the sanitary napkin 2 is folded in three along the packaging film 20 along the lines 66 and 68, which divide the sanitary napkin 2 substantially in three along the longitudinal direction. First, in FIG. 3, the lower part 74 divided into three parts is folded so as to overlap the center part 72,
Then, the upper portion 70 to which the tape 34 is attached is further folded so as to overlap the center portion 72. Tape 34
May be attached after all the folding of the sanitary napkin 2 is completed, or may be attached in advance.
The sanitary napkin 2 folded in this manner is fixed along the side edges of the packaging film 20 by appropriate means such as heat fusion, pressure bonding, a combination of heat fusion and pressure bonding, or bonding with an adhesive ( (See FIG. 5). Thus, the individual packaging of the sanitary napkin 2 is completed.

In the above embodiment, the front protective sheet 5
0 folding part 80 is the central part 72
It is preferable to extend only in the region (see FIG. 3). Further, the folded portion 280 of the rear protection sheet 250
Preferably extends only in the region of the three-folded rear part 74. In this way, the folds 80, 280 do not extend beyond the fold lines 66 or 68, and the folds 80, 280 are not creased. By doing so, the guiding action by the edge 54 of each protective sheet 50, 250 described later is not hindered.

The adhesive 264 of the rear protection sheet 250 is
As shown in FIGS. 2 to 4, one vertical projecting piece 260 and the other vertical projecting piece 262 of the rear protection sheet 250 are connected and fixed. As shown in FIGS. 2 and 3, the adhesive 264 is provided at a substantially central portion in the longitudinal direction of one of the vertically projecting pieces 260. However, the position of the adhesive 264 is not limited to this. Adhesive 264
May be the position 273 farthest from the edge 254 having an inclined portion in the longitudinal direction of each of the vertically projecting pieces 260 and 262. This adhesive 264 is applied to each of the vertically projecting pieces 2.
An adhesive having a relatively low adhesive strength may be used so that the connection and fixing between 60 and 262 can be easily released. Further, the adhesive 264 may be omitted. Front protection sheet 5
The zero adhesive 64 can be the same as the adhesive 64.

When the sanitary napkin 2 thus configured is taken out of the packaging film 20, the following is performed. The upper part 70 is opened by pulling the tape 34 in the direction indicated by the arrow 76 shown in FIG. 5 and peeling off the fixing portions along the both side edges 22 of the packaging film 20. Thereafter, the lower portion 74 is opened from the center portion 72 to the state shown in FIG. Next, the upper end 3 of the sanitary napkin 2 shown in FIG.
2 and the packaging film 20 are separated from each other in the direction of the paper surface of FIG. First, the fixing between the adhesive layer 38 on the back surface of the sanitary napkin body and the protective sheet 46 is released. In the initial stage of the separation, even if the sanitary napkin 2 is lifted from the packaging film 20, the vertical protruding pieces 60, 62 of the protective sheet 50 are not removed.
The protruding pieces 60,
62 is not immediately fixed. When the sanitary napkin 2 is further separated from the packaging film 20, the front protection sheet 50 is lifted by the sanitary napkin 2 (see FIG. 6). At this time, since the edge 54 of the front protection sheet 50 inclined in an arc shape can guide the sanitary napkin 2 separated upward, the front protection sheet 50 is not broken. Thereafter, the fixing with the adhesive 64 is released. As the sanitary napkin 2 is further separated, the adhesive layer 44 of the front flap 10 and the front protection sheet 5
The fixation to 0 is released. Next, after the adhesion between the adhesive layer 42 and the protective sheet 48 is released, the rear protective sheet 250 and the adhesive layers 244, 240 are formed in the same manner as the front protective sheet 50.
Is fixed. This completes the separation of the sanitary napkin 2 from the packaging film 20.

In the above embodiment, the front flap 10
Can be omitted as necessary. In response to this, the front protection sheet 50 can be deleted. In this case, the portion of the protection sheet corresponding to the adhesive layer 40 may be formed from one protection sheet continuous with the protection sheets 46 and 48. Further, any or all of the vertically projecting pieces 60, 62, 260, 262 provided on both sides of the front protection sheet 50 and the rear protection sheet 250 may be deleted. In this case, the front protection sheet 50 and the rear protection sheet 250 may include only main portions 65 and 265 each having an arc shape. In addition, various design changes can be made without departing from the gist of the present invention.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a sanitary napkin to which a protective sheet of the present invention is applied.

FIG. 2 is a top view showing a state where the sanitary napkin is removed from FIG.

FIG. 3 is a top view showing a state in which the sanitary napkin is attached and the protective sheet is folded in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is a perspective view showing a state in which the sanitary napkin of FIG. 1 is packaged.

FIG. 6 is a side view showing a state when the sanitary napkin of FIG. 1 is removed from the package.

[Explanation of symbols]

 2 Sanitary napkin 4 Top sheet 6 Back sheet 8 Absorbent core 10, 210 Flap 24 Flap fold 38, 40, 42, 44, 240, 244 Adhesive layer 50, 250 Protective sheet 53, 253 Side edge 54 of protective sheet , 56, 254, 256 Edge of protective sheet 59, 63, 259, 263 Straight end 69, 269 Slope start point 71, 271 Slope end point 75, 275 Slope line

 ──────────────────────────────────────────────────の Continuation of the front page (71) Applicant 592043805 ONE PROCTER & GANBLE PLAZA, CINCINNATI, OHIO, UNITED STATES OF AMERICA

Claims (11)

[Claims] 1. A sanitary napkin body comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core disposed between the sheets, and a sanitary napkin biased rearward of the sanitary napkin. A rear flap extending laterally outwardly from opposite sides of the sanitary napkin body at a location.The sanitary napkin further comprises a rear flap for retaining the rear flap in an undergarment. An adhesive layer provided on the underwear facing surface side, and a rear protective sheet that protects the adhesive layer before use of a sanitary napkin, wherein the rear protective sheet is sanitary for using a sanitary napkin. A free end that can be deployed laterally outward of the sanitary napkin when removing the napkin from the rear protective sheet,
At least a part of an intermediate portion of at least one end has an inclined portion inclined with respect to the lateral direction of the sanitary napkin, and before use of the sanitary napkin, the rear flap extends along the sanitary napkin body. The sanitary napkin is folded inward in the lateral direction, the free end of the rear protective sheet is overlapped with the adhesive layer of the folded rear flap, and at least one edge of the rear protective sheet is folded back. A sanitary napkin, wherein the inclined portion is disposed at a portion intersecting the portion. 2. The sanitary napkin further comprises: a front flap extending laterally outward from both side edges of the sanitary napkin main body in the longitudinal front of the sanitary napkin; and a front flap around an opening side edge of the undergarment. An adhesive layer provided on the undergarment facing surface side for holding in a folded state, and a front protective sheet for protecting the adhesive layer before use of the sanitary napkin, wherein the front protective sheet includes a sanitary napkin. A free end that can be deployed laterally outward of the sanitary napkin when the sanitary napkin is removed from the front protective sheet for use, and at least a portion of at least one of the intermediate portions of the sanitary napkin in the lateral direction of the sanitary napkin. Before use of the sanitary napkin, the front flap is folded inward along the sanitary napkin body in the lateral direction of the sanitary napkin. The free end of the front protection sheet is overlapped with the adhesive layer of the folded front flap, and at least a part of one edge of the front protection sheet intersects with the folded portion of the front flap. The sanitary napkin according to claim 1, wherein is disposed. 3. The sanitary diaper according to claim 2, wherein the inclined portion of the front protective sheet and the inclined portion of the rear protective sheet are inclined in the same direction with respect to the lateral direction of the sanitary napkin. napkin. 4. The front protection sheet and the rear protection sheet,
The sanitary napkin according to claim 3, wherein the sanitary napkin is formed in the same shape. 5. The sanitary napkin according to claim 4, wherein said sanitary napkin is wrapped by a package, and said rear protective sheet and front protective sheet are connected to the package. 6. The sanitary napkin according to claim 6, wherein said sanitary napkin is folded in three along a line that divides said sanitary napkin into approximately three along its longitudinal direction, and said rear protective sheet is largely folded in three. The sanitary napkin according to claim 1, wherein the napkin extends into one end of the napkin. 7. The sanitary napkin according to claim 6, wherein the folded portion of the rear protective sheet folded along the folded portion of the rear flap extends only inside the one end. 8. The sanitary napkin according to claim 7, wherein said rear protection sheet entirely extends only within said one end. 9. The sanitary napkin according to claim 2, wherein the front protection sheet extends into a central portion of the sanitary napkin whose most part is folded in three. 10. The sanitary napkin according to claim 9, wherein the folded portion of the front protection sheet folded along the folded portion of the front flap extends only in the central portion. 11. The front protection sheet according to claim 11, wherein the front protection sheet entirely extends only in the central portion.
The sanitary napkin as described.