JPH0727540U - Disposable body fluid absorbent wear article - Google Patents

Abstract

(57) [Summary] [Purpose] To make the disposable body fluid absorbent wearing article breathable near the waist edge. [Structure] A disposable bodily fluid absorbent wearing article 1 is composed of a top sheet 6, a back sheet 7, an absorbent core 8, leg elastic members 4, and a waist elastic member 5.
The back sheet 7 is composed of a breathable sheet 7a and a liquid impermeable sheet 7b joined to the inner surface thereof. The liquid-impermeable sheet 7b is made short so that its edges 17a, 17b are located inwardly of the edges 15a, 15b of the top sheet 6, and the waist elastic member 5 is provided between the opposite edges 15 thereof.
The sheets a and 17a and 15b and 17b are sandwiched between the top sheet 6 and the breathable sheet 7a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to disposable bodily fluid absorbent wearable articles such as disposable diapers, disposable training pants, and disposable sanitary shorts.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, a technique of forming the wearing article by a breathable liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent core interposed between these sheets is well known. Further, a technique for forming a back sheet by bonding a plastic film to one surface of a non-woven fabric is known from Japanese Utility Model Application Laid-Open No. 59-149903 and JP-A-3-80859. The technique disclosed in Japanese Utility Model Laid-Open No. 59-149903 improves the appearance of the diaper by using such a back sheet, and the technique disclosed in Japanese Patent Laid-Open No. 3-80859 targets the sanitary shorts in the widthwise center of the nonwoven fabric. A plastic film is joined to the part to prevent leakage of body fluids, and the widthwise side where the plastic film is not joined has air permeability between the inside and outside of the shorts to prevent stuffiness caused by wearing the shorts.

[0003]

[Problems to be solved by the device]

 A wearing article using a liquid-impermeable plastic film as a back sheet tends to be stuffy even if the film is breathable, and the technique of the above-mentioned JP-A-3-80859 prevents the stuffiness. To help. However, this technique does not solve all the problems that the wearable article tends to get damp, and there is always a demand for a means for further improving the air permeability.

Therefore, in this invention, the back sheet is composed of a breathable sheet and a liquid-impermeable sheet bonded to the inner surface thereof, and the edge of the liquid-impermeable sheet is located inside the edge of the top sheet. It is an object to solve the above-mentioned problems of the prior art by placing the elastic members around the waist between the opposite edges of the sheets so as to make the vicinity of the elastic members breathable. .

[0005]

[Means for Solving the Problems]

 The points that this device uses as means for solving the above problems are as follows.

In the present invention, a disposable body fluid absorbent wearer having a top sheet, a back sheet, an absorbent core interposed between the two sheets, and elastic members attached along the circumference of the waist and the circumference of the legs, respectively. Goods are the premise.

Under such a premise, the top sheet is a breathable liquid-permeable sheet, and the back sheet is made of a breathable sheet and a liquid-impermeable sheet bonded to the inner surface thereof, and the top sheet and the back sheet are superposed on each other. In the combined state, the edge of the liquid-impermeable sheet is located inward of the edge of the top sheet, and the elastic member around the waist is located between the edges of the top sheet and the liquid-impermeable sheet that face each other. It is a feature of this invention that the elastic member is sandwiched between the top sheet and the breathable sheet.

[0008]

[Action]

 In the bodily fluid-absorbent wearing article configured as described above, the waist elastic member is sandwiched between the breathable liquid-permeable top sheet and the breathable sheet constituting the back sheet, and the wearing article is close to the elastic member. Become breathable.

When there are a plurality of waist elastic members, and at least one of them is sandwiched between the top sheet and the liquid-impermeable sheet that constitutes the back sheet, the elastic members contract and the longitudinal direction occurs around the waist. The gather easily extends to the backsheet portion where the rigidity is relatively high due to the presence of the liquid impermeable sheet.

[0010]

【Example】

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

FIG. 1 is a perspective view of a disposable pants-type diaper 1 which is an example of the wearing article. The diaper 1 has a pair of left and right leg openings 2 and a waist opening 3, and each of the openings 2 and 3 has a leg elastic member 4 and a waist elastic member 5. Gathering occurs at the periphery of each opening as 5 contracts. At the left and right edges of the diaper 1, there is a seal line 9 formed by welding a front body 10 and a rear body 11 which will be described later.

FIG. 2 is a developed perspective view showing the constituent members of the diaper 1, which is cut open along the left and right seal lines 9, expanded in the front-rear direction, and then disassembled in the thickness direction. The diaper 1 is composed of a top sheet 6, a back sheet 7, and an absorbent core 8 interposed between the two sheets 6, 7, and the top and back sheets 6, 7 have a front body 10 and a rear body 10 in the longitudinal direction. The body 11 and the crotch portion 12 interposed between the two body portions 10 and 11 are provided, and the left and right sides of the crotch portion 12 have recessed portions 13 for forming the leg openings 2. The top sheet 6 is made of a breathable liquid-permeable sheet having edges 15a and 15b, and the back sheet 7 has the same shape and size as the top sheet 6 and has a breathable sheet 7a having edges 16a and 16b. From the liquid impermeable sheet 7b which is intermittently joined to the inner surface of the permeable sheet 7a and has the same shape in the width direction but has a dimension between the edges 17a, 17b shorter than the dimension between the edges 16a, 16b. Become. On the inner surface of the breathable sheet 7a, two ribbon-like waist elastic members 5 (in the width direction) extending in the width direction are provided between the opposing edges 16a and 17a and between the edges 16b and 17b. 5a, 5b) are attached in an expanded state, and one waist elastic member 5 (5c) is in an expanded state on the inner surface of the liquid-impermeable sheet 7b along each edge 17a, 17b. It is attached. Further, two elastic members 14 are attached in a stretched state along each recess 13. The breathable sheet 7a and the liquid-impervious sheet 7b are intermittently joined by a hot-melt adhesive 18 (see FIG. 3), and the absorbent core 8 is composed of at least the top sheet 6 and the liquid-impervious sheet 7b. It is intermittently bonded to one of the inner surfaces. The top and back sheets 6 and 7 are integrally joined by intermittently joining them on the outer periphery of the absorbent core 8. The integrated body is formed by folding the front and back bodies 10, 11 with the top sheet 6 inside. The diapers 1 of FIG. It should be noted that such joining can be performed when the top and back sheets 6, 7 contain the heat-fusible fiber, and instead of the joining, a technique of bonding or stitching can be appropriately used.

FIG. 3 is an end view taken along line XX of FIG. 1 and shows the details of the edge portion of the diaper 1. In the figure, two elastic members 5a and 5b are sandwiched between the top sheet 6 and the breathable sheet 7a, and one elastic member 5c is sandwiched between the top sheet 6 and the liquid impermeable sheet 7b. ing. These sandwiched elastic members 5a, 5b, 5c may be joined to either one of the sheets, and for example, one of the sheets sandwiching the hot melt adhesive 18 or a ribbon-shaped sheet. If the elastic member is intermittently applied to one surface, such joining can be achieved. When the edge portions are configured in this manner, the portion A where the top sheet 6 and the breathable sheet 7a, which are both breathable, are joined to each other inside and outside the diaper 1 except for the portion where the elastic members 5a and 5b are joined. The diaper 1 has an effect of preventing stuffiness. Further, a portion B located inward of the portion A is a portion where the top sheet 6, the breathable sheet 7a and the liquid impermeable sheet 7b overlap each other, and the breathability is poorer than that of the portion A. Although it is highly rigid and prevents the gathers in the vertical direction due to the contraction of the elastic members 5a and 5b from extending downward in the figure, by disposing the elastic member 5c, the gathers can be extended inward. It can be postponed. The diaper 1 having the gathers extending from the portion A to the portion B not only fits well around the waist and is comfortable to wear, but also has a loose fit around the waist and improves the appearance. The configuration of the edge portion is common to the front and rear bodies 10 and 11, but may be applied to only one of the bodies 10 and 11.

FIG. 4 is an end view similar to FIG. 3, but showing a different embodiment. In the figure, the breathable sheet 7a of the back sheet 7 has a long dimension between the edges 16a and 16b and extends from the edges 15a and 15b of the top sheet 6 by a length C, and the extending portion C is the top. It is folded over the sheet 6 and joined intermittently with a hot melt adhesive 18. If this is done, the breathability of the part A will be somewhat impaired, but on the other hand, the waist edge of the diaper 1 will be smooth because the edges of the topsheet 6 and backsheet 7 are not exposed, There is no fear that the edges of these sheets will irritate the soft skin of infants. In order to obtain such an effect, the top sheet 6 may be formed so as to extend from the air permeable sheet 7a, and the extending portion may be folded over the breathable sheet 7a.

Although the elastic member 5c is sandwiched between the top sheet 6 and the liquid impermeable sheet 7b in FIGS. 3 and 4, it is sandwiched between the breathable sheet 7a and the liquid impermeable sheet 7b. Alternatively, the elastic member 5c may be omitted to implement the present invention.

In the present invention, a non-woven fabric or a perforated plastic film can be used for the top sheet 6, and a plastic film or a rubber sheet can be used for the liquid impermeable sheet 7b of the back sheet 7. The breathable sheet 7a of the back sheet may be made of the same material as that of the top sheet 6, or may be a breathable liquid-impermeable sheet. An elastic material may be appropriately used for these sheets 6, 7a, 7b to improve the fit when worn. For the absorbent core 8, crushed pulp or a mixture of crushed pulp and a super absorbent polymer can be used. For joining various materials, in addition to adhesives and adhesives including hot melt adhesives, techniques such as heat welding and stitching can be used.

[0017]

[Effect of device]

 In this invention, since the region around the waist elastic member is provided with air permeability, the effect of preventing stuffiness when wearing a diaper can be obtained in the vicinity of the member.

[Brief description of drawings]

FIG. 1 is a perspective view of a pants-type diaper.

FIG. 2 is a perspective view in which a pants-type diaper is developed in the front-rear direction and exploded in the thickness direction.

FIG. 3 is an end view taken along line XX of FIG.

FIG. 4 is an end view similar to FIG. 3 illustrating an embodiment of the present invention.

[Explanation of symbols]

 1 Wearable article (diaper) 4 Leg elastic members 5, 5a, 5b, 5c Waist elastic members 6 Top sheet 7 Back sheet 7a Breathable sheet 7b Liquid impermeable sheet 15a, 15b Edge 16a, 16b Edge 17a, 17b Edge

Claims (1)

[Scope of utility model registration request] 1. A disposable body fluid absorbent wearing article having a top sheet, a back sheet, an absorbent core interposed between these sheets, and elastic members attached around the waist and legs, respectively. The top sheet is a breathable liquid-permeable sheet, and the back sheet is composed of a breathable sheet and a liquid-impermeable sheet bonded to its inner surface, and the liquid-impermeable sheet in a state in which the top sheet and the back sheet are superposed on each other. The edge of the permeable sheet is located inward of the edge of the top sheet, and the elastic member around the waist is between the edges of the top sheet and the liquid impermeable sheet that face each other, and The wearing article, wherein a member is sandwiched between the top sheet and the breathable sheet.