JPH0586322U - Sanitary napkin - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to adjust the position of the sanitary napkin with wings in the front-back direction of the pants crotch part. [Structure] The sanitary napkin 1 is constructed by interposing a liquid-absorbent core 4 between a topsheet 2 and a backsheet 3, and wing portions 6 are extended from both side edges of the core 4. The distance between the side edges 7 of the left and right wing portions 6 is at least twice the width of the core 4, and the adhesive 10 is applied to the back surface of the wing portions 6. The wing portion 6 is folded back so as to wrap it in the pants crotch portion, and the vicinity of the overlapping side edges 7 is bonded to each other. The napkin 1 has a cylindrical shape and wraps around the crotch part and does not come off from the crotch part, but the shift position can be adjusted in the front-rear direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sanitary napkin for absorbing menstrual blood, and more particularly to a sanitary napkin having wing flaps capable of wrapping around a crotch portion of wearing pants and extending from both side edges.

[0002]

[Prior Art]

 Conventionally, in a sanitary napkin, an absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the front and back sheets are extended outward from both side edges of the core. It is known that a wing type flap is formed. Such a wing has a function of fixing the sanitary napkin to the crotch part of the wearing pants through the adhesive applied on the back surface, but the sanitary napkin once fixed cannot adjust the position relative to the local area.

[0003]

[Problems to be solved by the device]

 The purpose of this invention is to provide a bio-napkin whose position can be adjusted even after wearing pants.

[0004]

[Means for Solving the Problems]

 This invention forms a flap having a wing portion extending outward from both side edges of the core, with a liquid-absorbent core interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet. , It is assumed that the sanitary napkin is coated with adhesive on the back of the wing. On this premise, the feature of the present invention is that the width between the side edges of the wing portions is twice or more the width of the core.

[0005]

[Action]

 In the sanitary napkin configured as described above, if the width of the absorbent core is set to be substantially the same as the width of the crotch part, when the two wing parts are folded back so as to wrap around the crotch part, the side of the wing part is folded. Since the edge portions overlap each other, the overlapping portions are joined. Since the biopsy napkin is partly cylindrical, it can be displaced in the front-back direction of the crotch part and does not come off from the crotch part.

[0006]

【Example】

 The details of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view of a sanitary napkin 1 according to the present invention. The napkin 1 includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-absorbent core 4 interposed between the front and back sheets 2 and 3, and the front and back sheets stacked around the core 4. 2 and 3 are closely joined. Front and back sheets 2 and 3 extending outward from both side edges of the core 4 form an extending portion 5, and a wing portion 6 extending further outward at a central portion in the longitudinal direction of the extending portion 5 is formed. The extended portion 5 and the wing portion 6 form a flap 9. The distance X between the side edges 7 of the left and right wing portions 6 is X> 2Y with respect to the width Y of the core 4 in the portion where the distance is measured.

FIG. 2 is a perspective view showing the back surface of FIG. A wing portion 6 prepared as a separate member is joined to the back sheet 3 by a joining line 8 in the extension portion 5, and the back surface side of the wing portion 6 has an adhesive 10A. 10B is applied, and they are covered with release papers 11A and 11B.

FIG. 3 is a schematic cross-sectional view of the wearing pants crotch portion 31 showing the usage state of the sanitary napkin 1 configured as described above. In the napkin 1, the width of the core 4 is the width of the crotch portion 31. It is about the same. In the napkin 1, the back surface side is applied to the skin contacting surface of the crotch pad portion 31, and the wing portion 6 is folded back along the side edge of the core 4 so as to wrap the portion 31. They can be overlapped in the vicinity of the side edges 7 of each other. If the release paper 11A is peeled off from one wing portion 6 between the two wing portions 6 that are overlapped with each other and the adhesive paper 10A is adhered to the surface of the other wing portion 6, the napkin 1 becomes a tubular shape and the crotch part is formed. 31 can be wrapped. The other release paper 11B remains attached. By doing so, the napkin 1 does not adhere directly to the crotch part 31, but can be displaced in the front-back direction of the crotch part 31 to be aligned with the local part, and can be removed from the crotch part 31. Never.

FIG. 4 is a back view of the sanitary napkin 1, showing various aspects of the wing portion 6 by (A), (B), and (C). In (A), there are wing portions 6A and 6B near both ends of the napkin 1, which is effective in preventing a relatively large napkin from twisting in the crotch portion 31. The left and right wing portions 6 of (B) are formed in a triangular shape so that it can be seen from the state of the virtual line that is folded back, and the length of each horizontal side is approximately the same as the width of the back sheet 3. The hypotenuses are parallel to each other, and the other side is a substantially vertical joining line 8. In the figure, the folded wing portions 6 do not overlap each other, but they can easily overlap each other if they are slightly shifted vertically. The width between the side edges 7 of the wing portion 6 is the width between the apexes 7 of the triangle and is three times or more the width of the liquid-absorbent core 4, so that the width of the crotch portion 31 is wide or narrow. The part 31 can be wrapped. Moreover, although the wing portion 6 is relatively large, it fits easily when folded back, so that it is easy to individually wrap the napkin 1 in the manufacturing process. Further, in this napkin 1, the release papers 11A and 11B of both wing portions 6 are peeled off, and both wing portions 6 are attached and fixed to the crotch pad portion 31 without being vertically displaced, whereby a conventional type napkin is obtained. The user can also use it that way if he or she likes it. In (C), the left and right wing portions 6 are asymmetrical, and the widthwise dimensions are different. In this way, the wing portions 6 can be bonded to each other at a position displaced from the center of the crotch portion 31 in the width direction.

The illustrated example shows a case where the wing portion 6 is prepared as a separate member and is joined to the back surface of the napkin. For such joining, various adhesives including a hot-melt type adhesive and the napkin 1 are attached. Depending on the constituent materials, means such as heat fusion or ultrasonic fusion can be used. Further, the wing portion 6 may use the surface sheet 2 or the back sheet 3 extending from the side edge of the liquid-absorbent core 4, and may be configured integrally with these sheets.

The material composing the sanitary napkin 1 is a liquid-permeable nonwoven fabric or a liquid-permeable open-pore plastic sheet for the top sheet 2, a liquid-impermeable plastic sheet for the back sheet 3, and crushed for the liquid-absorbent core. A mixture of pulp and a super absorbent polymer can be used. The wing portion 6 may be made of the same material as the topsheet 2 and the backsheet 3 regardless of whether it is liquid-permeable or liquid-impermeable.

[0013]

[Effect of the device]

 In the sanitary napkin according to the present invention, the distance between the side edges of the left and right wings is at least twice the width of the absorbent core, so it is easy to wrap the crotch part of the wearing pants in a cylindrical shape. is there. The sanitary napkin configured in this way can be moved backward and forward to adjust the position relative to the local area even after the pants are worn, and it does not come off or twist at the crotch area.

[Brief description of drawings]

FIG. 1 is a perspective view showing a sanitary napkin partially broken away.

FIG. 2 is a perspective view showing the back surface of the sanitary napkin of FIG.

FIG. 3 is a schematic sectional view of a crotch part of wearing pants.

FIG. 4 is a rear view of the sanitary napkin (A).
(B) and (C) show different wing parts.

[Explanation of symbols]

 1 Sanitary Napkin 2 Liquid Pervious Surface Sheet 3 Liquid Impermeable Back Sheet 4 Liquid Absorbing Core 6 Wing Part 7 Wing Part Side Edge 10A, 10B Adhesive

Claims (1)

[Scope of utility model registration request] 1. A liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet to form a flap having wing portions extending outward from both side edges of the core. The sanitary napkin in which an adhesive is applied to the back surface of the wing portion, wherein the width between both side edges of the wing portion is at least twice the width of the core.