JPH0565319U - Sanitary napkin - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the wing parts of a sanitary napkin having wing type flaps from twisting and sticking to each other with the adhesive applied thereto. [Structure] A flap 15 having a wing portion 14 is formed on both sides of the napkin 10, and the reinforcing layer 2 is formed on the wing portion 14.
A sanitary napkin in which the wing portion 14 is prevented from twisting by providing 7.

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.

A napkin equipped with such a wing-type flap is used by folding the flap back to the back of the wearing shorts and fixing it with an adhesive applied to the back of the flap, but the rigidity of the flap is low, in other words, it is flexible. Due to its high flexibility (so-called weak waist), the flaps often twist during the fixing operation. In such a case, the flap cannot be used because the twisted parts are bonded to each other by the adhesive on the back surface.

[0004]

[Problems to be solved by the device]

 An object of this invention is to eliminate the defect by reinforcing the flap.

[0005]

[Means for Solving the Problems]

 In this invention, a liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the back surface extends outward from both side edges of the core in the longitudinal direction. A sanitary napkin having a wing portion formed of a sheet portion and at least a top sheet joined to an upper surface of the back sheet portion is provided, and a sanitary napkin having at least a back surface of the wing portion coated with an adhesive is premised. Is characterized by.

By providing the reinforcing layer on the wing portion, the rigidity of the region of the wing portion provided with the reinforcing layer is made higher than the rigidity of the wing portion when the reinforcing layer is not provided. Point.

In an embodiment, the reinforcing layer is interposed between the back sheet portion and the top sheet. The top sheet is formed from a part of the top sheet or a material different from the top sheet. Liquid barrier 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 back surface of the crotch portion and fixed with the adhesive. At this time, the wing portion has an appropriate rigidity with the reinforcing layer, and is not twisted or fixed while being twisted.

[0009]

【Example】

 The present invention will be described below with reference to the drawings. 1 to 3, the napkin 10 includes a liquid-permeable top sheet 11, a liquid-impermeable back sheet 12, and outer side extension portions 11a and 12a smaller in length and width dimensions than these. It is composed of a liquid-absorbent core 13 and a flap 15 having a wing portion 14 interposed so as to occur.

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 covering the upper surface and the folded-back portion 17c to the back surface is joined to the upper surface of the back surface sheet 12 located on the lower surface by fusion means, and the liquid barrier sheet 17 A portion of the inner edge 17d, which is generated by folding back and is separated from the outer edge, 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), and As a result, the joining line 18 and the pocket 19 (see FIG. 5) are formed between the inner portion 17a of the liquid barrier sheet 17 and the topsheet 11. It is preferable that the joining line 18 be curved outward at a position where the wing portions 14 face each other, as shown by the reference numeral 18a, in order to deepen the pocket 19 at that portion.

Between the outer extending portion 17 b of the liquid barrier sheet 17 and the second outer extending portion 12 b of the backing sheet 12, which constitute each wing portion 14, the reinforcing layers 27 are integrally formed with them. Is intervened. When the reinforcing layer 27 is provided on each wing portion 14 in this way, each wing portion is easily bent along the inner edge of each reinforcing layer 27, and the folded edge at the time of later-described use is neat, but the reinforcing layer 27 is It may be a series of ones between the wing parts 14. Further, the reinforcing layer 27 may be provided on the outer surface of the backsheet 12. The reinforcing layer 27 can be formed by applying paper, non-woven fabric, synthetic resin film, synthetic resin foam sheet, hot melt (including those having foam), and the like. Also, it is preferable to use one having rigidity and being less likely to cause wrinkles (having relatively high bending stress), for example, a synthetic resin foam sheet. It is preferable that the wing portion 14 is biased toward the front end side of the napkin 10 as shown in FIG.

On the outer surface of the central region of the back sheet 12, a band-shaped adhesive 20 is provided in parallel with the longitudinal direction thereof, and on the outer surface of the central region of the second outer extending portion 12b of the back sheet 12, a rectangular adhesive 21 is provided. Are coated, and the pressure sensitive adhesives 20 and 21 are covered with release sheets 22 and 23 to be protected.

In FIG. 4, the cord-like material 24 is interposed along the inside of the folded back inner edge 17 d of the liquid barrier sheet 17, and at least both ends in the length direction thereof are fixed to the liquid barrier sheet 17. The string-like material 24 preferably has elasticity in its length direction or cushioning property in its thickness direction, but may be non-stretchable or non-cushionable. If it has elasticity, it will be attached while being stretched in its length direction.

In the napkin 10 having the above structure, first, the release sheet 22 is peeled off, and the central region of the napkin 10 is adhered to the inner surface of the crotch portion 25 (see FIG. 5) 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. 5, by folding back the wing portion 14, the inner portion 17a of the flap 15 facing the portion is pulled outward and the inner side edge 17d thereof is pulled. Is lifted and the pocket 19 is opened.

Although not shown, in order to solve only the intended problem of the present invention, the napkin does not have to have the configuration of the illustrated embodiment. For example, without using the liquid barrier sheet 17, the topsheet 11 is formed in the same size and shape as the backsheet 12 having the second outer extension 12b, and the second outer extension 12b of the backsheet 12 is formed. Alternatively, the wing portion 14 may be formed from the surface sheet portion having the same size and shape as the wing portion 14.

[0017]

[Effect of the device]

 In the present invention having the above-described structure and operation, the wing portions are reinforced by the reinforcing layer and are not twisted. Therefore, when the wing portions are twisted, the wing portions are adhered to each other by the adhesive and used. The napkin can be used with peace of mind without the failure that it becomes impossible or that the napkin is stuck to the wearing shorts while twisting and is not firmly fixed to it and the napkin easily slips.

[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 a napkin according to another embodiment at a portion equivalent to that of FIG.

FIG. 5 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 13 Core 14 Wing Part 15 Flap 17 Liquid Barrier Sheet 27 Reinforcing Layer

Claims (4)

[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, and the core is extended outward from both side edges of a substantially central portion in the length direction. In a sanitary napkin having a wing portion formed from the back sheet portion and at least a top sheet joined to the upper surface of the back sheet portion, at least the sanitary napkin having an adhesive applied to the back surface of the wing portion has a wing portion. By providing the reinforcing layer, the rigidity of the region of the wing portion provided with the reinforcing layer is made higher than the rigidity of the wing portion when the reinforcing layer is not provided. napkin. 2. The napkin according to claim 1, wherein the reinforcing layer is interposed between the back sheet portion and the top sheet. 3. The napkin of claim 1, wherein the topsheet is part of the topsheet. 4. The napkin according to claim 1, wherein the top sheet is a liquid barrier sheet which is a separate material from the top sheet.