JPH0617726U - Disposable diaper with an opening in the top sheet - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the adhesion of the disposable diaper opening to the skin. [Constitution] Liquid-permeable first upper surface sheet 2 of disposable diaper 1
A second top sheet 5 having a liquid diffusion resistance is provided on the above. Second
The top sheet 5 is provided with a rectangular opening portion 8 for receiving stool and a skin contact portion 20A having elasticity in the longitudinal direction of the diaper along the side edge 15 of the opening portion 8. When the diaper 1 is curved, the skin contact portion 20A is lifted from the second top sheet 5 to form a chevron-shaped rib that easily adheres to the skin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disposable diaper suitable for treating stool.

[0002]

[Prior art]

 Conventionally, in order to solve the problem that excreted feces spread between the wearer's skin and the first upper sheet of the diaper and create a discomfort, the second upper sheet having an opening in the buttocks is firstly provided. A diaper having a structure provided on a top sheet is known. In this structure, the stool is received through the opening and guided to the space between the first top sheet and the second top sheet, and the second top sheet separates the stool from the skin to achieve the intended purpose. ing.

[0003]

[Problems to be solved by the device]

 In order to receive stool in the open hole, it is desirable that the position of the open hole and the position of the anus be the same and that the periphery of the open hole is in close contact with the skin. If they are in close contact, stool will not leak laterally and spread between the skin and the sheet. However, it is generally difficult to closely adhere the second top sheet made of non-woven fabric or plastic sheet according to the ups and downs of the buttocks, and a gap is likely to be formed between the second top sheet and the skin. If the diaper slides down while wearing it, the gap will increase, and the amount of leakage will increase and the discomfort will increase. When the second upper surface sheet in which the elastic member is arranged at the peripheral edge of the opening is used, the adhesion is improved when the elastic member makes good contact with the skin, but it is generally difficult to make good contact.

In view of this, the present invention aims to solve the problem that stools easily leak from the gap with the skin by providing a stretchable rib-shaped skin contact portion on the periphery of the opening to facilitate close contact with the skin. ing.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the gist of the present invention is as follows.

The premise of the present invention is that the liquid-absorbent core is interposed between the liquid-permeable first upper sheet and the liquid-impermeable lower sheet, and the upper surface of the first upper sheet is A liquid diffusion resistant second top sheet is overlapped and both lengthwise end portions thereof are joined to the top sheet, and a long opening in the lengthwise direction is formed in the central region of the second top sheet. A disposable diaper in which first elastic members that contract in the lengthwise direction are arranged on both side edges of the opening.

Based on such a premise, the present invention has the following features.

A strip-shaped sheet having the same length as the opening is provided on the upper surface of the second top sheet, and one side edge of this sheet is joined to the opening side edge, and the other side edge is connected to the opening. Joined to the upper surface between a side edge and the outer edge of the second upper surface sheet. A second elastic member that contracts in the length direction of the strip-shaped sheet is arranged on the inner surface of the widthwise central portion where the strip-shaped sheets are not joined, so that a stretchable skin-contact portion is provided on the side edge of the opening. The feature is that it is formed.

In another configuration of the present invention, by making an I-shaped notch in the central region of the second top sheet, the opening and the skin contact portion, the flap obtained is folded back to the outside. Form.

[0010]

[Action]

 When the diaper configured as described above is bent inward in the longitudinal direction to have a shape when worn, the first elastic member contracts together with the second upper surface sheet, and elastic gathers are generated at the side edge of the opening. The second top sheet floats apart from the first top sheet to form a space for storing feces between the two sheets. At the same time, the skin contact portion contracts together with the second elastic member and rises above the second top sheet, forming a rib with a chevron cross section. The ribs are extensible and they make good pressure contact with the skin.

[0011]

【Example】

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

1 and 2 are a plan view of the diaper 1 and a partial sectional view taken along line II-II thereof. In both figures, the diaper 1 is a liquid-permeable first upper surface sheet 2, a liquid-impermeable lower surface sheet 3, a liquid-absorbent core 4 interposed between these sheets 2 and 3, and a first upper surface sheet 2. And a liquid diffusion resistant second top sheet 5 located on the top surface of the. Here, the liquid diffusion resistance means that the second top sheet 5 has an appropriate water repellency so that the diffusion of body fluid on this sheet is suppressed to a required level. The lengthwise ends of the second topsheet 5 are joined to the first topsheet 2, and the sheet 5 is cut off in the central area of the sheet 5 to form a rectangular opening long in the lengthwise direction. A section 8 is provided. Elastic members 10 are provided on the left and right side edges 9 around the legs of the diaper 1, and elastic members 13 are provided on the end edge 11 on the rear body side so that the legs and waist can be stretched. One end of the tape fastener 14 is fixed to both side edges of the rear body.

In the second top sheet 5, the aperture 8 has a side edge 15 and an end edge 16, and a strip-shaped sheet 20 for skin contact is provided along the side edge 15. An inner edge 21 of the sheet 20 is joined to the side edge 15 of the opening with an adhesive 17A, and an outer edge 22 of the sheet 5 is provided between the side edge 15 and the side edge 9 of the second top sheet 5. It is bonded to the upper surface with an adhesive 17B. The center portion 23 in the width direction of the sheet 20 is not joined, and when it floats up from the second upper surface sheet 5, a hollow portion 24 is formed in the cross section in the width direction (see FIG. 2). The first and second thread rubbers 26, 28 are provided on the inner surface side of the sheet 20, and the first thread rubber 26 extends between both ends of the side edge 15 and is adjacent to the side edge 15, and the second upper surface sheet 5, or The sheet 5 and the sheet 20 are intermittently adhered with an adhesive 27. Further, the second thread rubber 28 extends in parallel with the first thread rubber 26, preferably its tensile stress is stronger than that of the first thread rubber 26, and is intermittently provided on the inner surface of the central portion 23 of the sheet 20 by the adhesive 29. Adhered to each other. Both ends 30 and 31 of the second rubber thread 28 are adhered to the vicinity of the edges of the sheet 20, but both ends 30 'and 31' extend from the edges of the sheet 20 as shown by the chain line in the figure, and The one-thread rubber 26 may be bonded and fixed to the second upper sheet 5 at a position closer to the end edges 11 and 12 of the diaper 1 than the both ends of the one-thread rubber 26. The sheet 20 to which the first and second thread rubbers 26, 28 are attached in this manner is the skin contact portion 20A.

FIG. 3 is a perspective view of the diaper 1 curved in the longitudinal direction. When the diaper 1 is further curved, it is in a state of being worn. When the diaper 1 bends, the first rubber thread 26 contracts together with the second upper surface sheet 5 to form the elastic gathers 35 at and around the side edge 15 of the opening portion, and at the same time, the second upper surface sheet 5 does not move. 1 Lift the sheet from the top sheet 2 and create a space between the two sheets to store stool. The second thread rubber 28 contracts together with the sheet 20 and lifts the sheet 20 from the second upper surface sheet 5. However, as shown in the drawing, both ends 30, 31 extend from the sheet 20 and both ends of the first thread rubber 26 are extended. At a higher position, the non-bonded portion 23 of the sheet 20 can be lifted particularly high from the second top sheet 5. Due to this lifting, the sheet 20 forms a rib-shaped skin contact portion 20A having a mountain shape in the width direction along the side edge 15 of the opening portion.

FIG. 4 is a partial cross-sectional view of the diaper 1 showing a sheet 20 and a skin contact portion 20A different from those in FIG. The sheet 20 in this figure is formed by folding a part of the second top sheet 5 outward at the side edge 15 of the opening. Such a sheet 20 has an I-shaped cut line, that is, a cut line in the longitudinal direction, as shown by a chain line, without cutting off a portion corresponding to the opening 8 in the second top sheet 5 of FIG. A second upper sheet 5 having score lines 41 and widthwise score lines 42 and 43 at both ends thereof is prepared, and a pair of U-shaped flaps made of the score lines 41, 42 and 43 is formed. It can be obtained by folding these flaps outward and joining the free edge generated by the score line 41 to the second upper surface sheet 5 as the outer edge 22. A first thread rubber 26 is attached in an expanded state to the inner surface of the inner edge 15 which is the folding line of these flaps, and the second thread rubber 28 is attached to the inner surface between the inner edge 15 and the outer edge 22. Are attached in an expanded state, and these flaps form the skin contact portion 20A.

In the diaper 1, the outer peripheries of the first upper surface sheet 2 and the lower surface sheet 3 are closely bonded, and the outer periphery of the second upper surface sheet 5 is closely bonded to the first upper surface sheet 2. There is. For these joining and other joining in this embodiment, an adhesive such as a hot melt adhesive or a technique of heat-sealing a plastic sheet can be used. Nonwoven fabric or perforated plastic sheet can be used for the first upper surface sheet 2, plastic sheet for the lower surface sheet 3, and nonwoven cloth having required water repellency for the second upper surface sheet 5. As the liquid-absorbent core 4, a shaped product made of a mixture of crushed pulp and superabsorbent polymer can be used.

[0017]

[Effect of device]

 When the diaper configured as described above is worn and curved in the longitudinal direction, the peripheral edge of the opening portion of the second upper surface sheet floats up from the first upper surface sheet to form a space for storing stool and its side edge. A rib-shaped skin contact part with elastic gathers is formed. Since the side of the skin contact part is inclined like a chevron, it functions as a hopper and makes it easy to receive stool. The skin contact part prevents the peaks of the chevron ribs from being pressed well against the skin to form a gap with the skin, and even when the diaper is slightly slipped down, the prevention effect can be obtained. Since this rib extends in the longitudinal direction of the diaper, it is particularly effective in preventing the outflow of the stool in the width direction.

[Brief description of drawings]

FIG. 1 is a plan view of a diaper according to the present invention.

FIG. 2 is a partial sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view of the diaper in a curved state.

FIG. 4 is a partial cross-sectional view of a diaper showing a skin-contacting sheet of a mode different from that of FIG.

[Explanation of symbols]

 1 Diaper 2 1st upper surface sheet 3 Lower surface sheet 4 Liquid absorbing core 5 2nd upper surface sheet 8 Opening part 9 Side edge 11 End edge 15 Opening part side edge 16 Opening part edge 20 Strip-shaped sheet 20A Skin contact part 21 Inner edge 22 Outer edge 23 Non-joint portion 26 First elastic member (thread rubber) 28 Second elastic member 41, 42, 43 Cut line

Claims (2)

[Scope of utility model registration request] 1. A liquid diffusion resistant second top sheet with a liquid-absorbent core interposed between a liquid-permeable first top sheet and a liquid-impermeable bottom sheet. Are overlapped with each other and both lengthwise end portions thereof are joined to the upper surface, and a long opening portion is formed in the central region of the second upper surface sheet in the lengthwise direction, and the length portions are formed at both side edges of the opening portion. In a disposable diaper in which a first elastic member that contracts in the vertical direction is arranged, a strip-shaped sheet having the same length as the opening is provided on the upper surface of the second top sheet, and one side edge of the strip-shaped sheet is provided. A width that is joined to the side edge of the opening portion and the other side edge is joined to the upper surface between the side edge of the opening portion and the outer edge of the second upper surface sheet, and is not joined to the strip-shaped sheet. By arranging a second elastic member that contracts in the longitudinal direction on the inner surface of the central part in the direction, The elastic diaper part is formed on the side edge of the opening part, and the diaper is characterized in that. 2. The opening portion is formed by making an I-shaped cut in the central region of the second top sheet and folding back the flaps on both sides generated by the cut to the outside.
These flaps have the outer edges of these flaps defined by the second
The first elastic member is disposed on the inner surface of at least the inner edge that is the folding line of these flaps, and is joined to the upper surface of the upper sheet. The diaper according to claim 1, wherein the skin contact portion is formed by arranging the contracting second elastic member.