JPH0551328U - Sanitary napkin - Google Patents

Abstract

(57) [Summary] [Purpose] A pocket with sufficient openings is provided on both sides of a sanitary napkin having a wing type flap. [Structure] A flap 15 having a wing portion 14 is formed on both sides of the napkin 10. The surface of the flap 15 is formed of a liquid barrier sheet 17, and the liquid barrier sheet 1
A pocket 19 for receiving menstrual blood is formed between the inner side portion 17a of 7 and the surface sheet 11. Pocket 19
When the wing portion 14 is folded back to the outside of the crotch portion of the wearing pants and the napkin 10 is fixed, the fold portion opens to open.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sanitary napkin (or sanitary pad) for absorbing and retaining menstrual blood, and more specifically, a wing type flap for wrapping and fixing the crotch part of wearing pants from both side edges. The present invention relates to an extended sanitary napkin.

[0002]

[Prior Art]

 Conventionally, in a sanitary napkin, a liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and both sides of the center of the core in the lengthwise direction are outwardly directed from the both sides. It is known that a sheet is extended to form a wing type flap.

Further, a sanitary napkin is also known in which flaps having pockets with or without stretchability in the length direction are formed on both sides of the sanitary napkin. This pocket is provided to prevent menstrual blood from leaking from the sides of the napkin.

However, the former flap of the napkin has only a fixing function for the crotch part of the pants, and does not have a function of preventing menstrual blood from leaking from both side edges of the napkin. The latter napkin flap does not have a fixing function that wraps around the crotch part of the wearing pants, and the flap is constructed so that it can rise during use of the napkin and sufficiently function as a pocket or barrier function for menstrual blood. It's not.

[0005]

[Problems to be solved by the device]

 It is an object of the present invention to provide a napkin having a wing-type flap that can sufficiently perform the leak prevention function during use.

[0006]

Means for Solving the Problems This invention has a liquid-absorbent core interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the cores are arranged from both side edges of a central portion in the longitudinal direction of the core. A sanitary napkin in which a flap having an outwardly extending wing portion is formed and an adhesive is applied to at least the back surface of the wing portion is premised, and is characterized by the following configuration.

The flap has a liquid barrier sheet, and an outer extending portion for forming the wing portion of the back sheet, which extends outward from an outer edge of a central portion in the longitudinal direction of the core, and From the outer extending portion for forming the wing portion of the liquid barrier sheet, which is superposed on the upper surface of the outer extending portion, and the inner portion of the liquid barrier sheet, which is superposed on the upper surface of the surface sheet near the outer edge of the core. Configured. The liquid barrier sheet has its outer peripheral edge joined to the upper surface of the back sheet, and is joined to the top sheet along its inner edge at a position spaced outward from its inner edge. Therefore, a pocket is formed between the inner portion and the surface sheet.

[0008]

[Action]

 In the napkin according to the present invention having such a configuration, the back surface is brought into contact with the inner surface of the crotch portion of the wearing pants, and the flap is folded back to the outer surface of the crotch portion and fixed with the adhesive. Thus, when the napkin is fixed to the wearing pants, the inner side portion of the flap is pulled outward by the folded portion, so that the inner side portion is lifted and the pocket is opened.

[0009]

【Example】

 The present invention will be described below with reference to the drawings. In FIG. 1, a napkin 10 includes a liquid-permeable top sheet 11, a liquid-impermeable back sheet 12, and an outer extending portion 11a, 12a which is smaller than these in length and width dimensions. The absorbent core 13 and the flap 15 having the wing portion 14 are formed.

The backsheet 12 is formed to be larger in width than the topsheet 11 so that the lateral extension 12a of the backsheet 12 in the lateral direction is the edge of the lateral extension 11a in the lateral direction of the topsheet 11. It is extended outward from. The outer extending portions 11a and 12a are joined to each other with an adhesive (not shown). Further, the back sheet 12 is outwardly extended from the outer side extending portions 12a in the lateral direction at a substantially central portion in the longitudinal direction thereof, preferably at a position offset to the front end 10a of the napkin 10. b is formed.

The flap 15 having the wing portion 14 is composed of a liquid barrier sheet 17 arranged on both sides of the napkin 10 and outer extending portions 11 a and 12 a of the front and back sheets 11 and 12. That is, the inner portion 17a that covers the upper surface of each portion of the topsheet 11 and the outer extension portion 12a of the backsheet 12 in the vicinity of both side edges of the core 13 and the second outer extension portion 12b of the backsheet 12 are provided. The outer peripheral edge of the liquid barrier sheet 17 having the outer extending portion 17b for covering the upper surface and the folded portion 17c to the back surface (see FIG. 3) is joined to the upper surface of the lower surface sheet 12 by the fusion means. The portion of the liquid barrier sheet 17 that is separated from the inner edge 17d by folding back of the liquid barrier sheet 17 is joined to the upper surface of the topsheet 11 along the side edge of the core 13 under heat and pressure (reference numeral 18 indicates the joining line). In addition, the joint line 18 and the pocket 19 (see FIG. 4) are formed between the inner portion 17a of the liquid barrier sheet 17 and the top sheet 11. As indicated by reference numeral 18a, it is preferable that the joining line 18 be curved outward at a portion where the wing portions 14 face each other in order to deepen the pocket 19 at that portion.

In FIG. 2, an adhesive 20 is provided on the outer surface of the central region of the back sheet 12 in a band shape parallel to the lengthwise direction, and a rectangular adhesive 21 is provided on the outer surface of the central region of the wing portion 12 b of the back sheet 12. The adhesives 20 and 21 are applied and covered with release sheets 22 and 23, respectively, for protection.

In the napkin 10 having the above-described structure, first, the release sheet 22 is peeled off, the central region of the napkin 10 is adhered to the inner surface of the crotch portion 25 (see FIG. 4) of the wearing pants with the adhesive 20, and then the release sheet. It is used by peeling off 23 and folding back the wing part 14 to the outer surface of the crotch part 25 and adhering it with the adhesive 21. When the napkin 10 is fixed to the wearing pants in this way, as shown in FIG. 4, the inside portion 17a of the flap 15 facing the wing portion 14 is pulled outward by folding back the wing portion 14, so that the inner side edge 17d thereof is Is lifted and the pocket 19 is opened.

[0014]

[Effect of the device]

 According to the present invention having the above-mentioned configuration and operation, by folding back the wing part, the inner part of the flap facing the part is pulled outward, the inner edge is lifted and the open pocket is placed on the upper surface of the napkin. It receives menstrual blood that is excreted and flows to its lateral edges. Therefore, menstrual blood does not leak from the side edges and the underwear is not contaminated.

Since the bottom, which is the outer edge of the pocket, is formed by the outer edges of the liquid-impermeable back sheet and the liquid barrier sheet, menstrual blood flowing into the pocket does not leak from the bottom of the pocket.

[Brief description of drawings]

FIG. 1 is a top perspective view of a sanitary napkin according to an embodiment of the present invention with a part thereof cut away.

FIG. 2 is a rear perspective view of the napkin.

FIG. 3 is an enlarged sectional view taken along line 3-3 of FIG.

FIG. 4 is an enlarged cross-sectional view of the napkin shown in FIG. 3 fixed to a crotch portion of wearing pants.

[Explanation of symbols]

 11 Top Sheet 12 Back Sheet 11b, 12b Outer Extending Part for Wing Formation 13 Core 14 Wing 15 Flap 17 Liquid Barrier Sheet 17a Inner 19 Pocket

Claims (4)

[Scope of utility model registration request] 1. A wing portion in which a liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and which extends outward from both side edges of a central portion in the longitudinal direction of the core. In a sanitary napkin in which a flap having is formed and at least the back surface of the wing portion is coated with an adhesive, the flap has a liquid barrier sheet, and extends outward from the outer edge of the central portion in the longitudinal direction of the core. An outer extending portion for forming the wing portion of the back sheet that has been extended, an outer extending portion for forming the wing portion of the liquid barrier sheet that is superposed on the upper surface of the outer extending portion, and the core. And an inner portion of the liquid barrier sheet that is superposed on the upper surface of the surface sheet in the vicinity of the outer edge, and the liquid barrier sheet has an outer peripheral edge joined to the upper surface of the back sheet, and an outward direction from the inner edge. The napkin in spaced locations along its inner edge joined to the topsheet, thus, is characterized in that is formed with a pocket between the topsheet and the inner portion. 2. The back sheet has a width dimension larger than that of the top sheet, so that the outer extension portion of the back sheet extends outward from the edge of the outer extension portion of the top sheet. The napkin according to claim 1. 3. The napkin according to claim 1, wherein the outer extending portion of the front and back sheet for forming the wing portion is formed continuously with the outer side of the outer extending portion of the front and back sheet. 4. The napkin according to claim 1, wherein the pocket is formed deeper in a portion where the wing portion is located than in other portions.