JPH0524022U - Disposable diaper - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object to provide a disposable diaper which prevents leakage of urine and skin rash or rash. A first flap 4 made of a breathable waterproof sheet is formed along both longitudinal edges of the absorber 3, and the first flap 4 is provided inside the first flap 4 in parallel with the first flap 4 and in the absorber. The second flap 6 is formed on the upper surface sheet, and the elastic members 5 and 7 are provided at the ends of the first flap and the second flap so that the first flap and the second flap can be worn.
The flap is configured to project to the front side, the longitudinal edge of the first flap 4 is bent inward and fixed on the surface sheet, and the longitudinal edge of the second flap 6 is inward or outward. It is a disposable diaper that is folded and fixed on a surface sheet.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disposable diaper. More particularly, it relates to improved disposable diapers for leaks, rashes and rashes.

[0002]

[Prior Art]

 Conventionally, there is known a disposable diaper in which flaps, which are located on both side edges in the longitudinal direction of the diaper and have elastic elastic bodies at their ends, are folded back to the upper surface of the absorbent body (Japanese Patent Laid-Open No. 59-25741). , Pp. 63-148323).

[0003]

[Problems to be solved by the device]

 However, these diapers have drawbacks such as a single flap, which easily causes leakage of urine and feces, and a lack of breathability in the flap, which easily causes a rash and a rash. That is, in a conventional disposable diaper in which flaps having elastic elastic bodies at the ends located on both sides in the longitudinal direction of the diaper are folded back to the upper surface of the absorbent body, it is sufficient to prevent leakage, swelling and rashes. I didn't want it to have good performance. The present invention is intended to provide a disposable diaper in which such drawbacks are improved.

[0004]

[Means for Solving the Problems]

 The present inventors have made the present invention as a result of extensive studies in order to prevent the above problems, that is, leakage, blurring and rash. The present invention resides in that a double flap is provided and the base end portion of the inner second flap is located on the absorber as a means for significantly enhancing the leakproof effect. And again, the flaps are made breathable to prevent stuffiness and rashes.

The present invention has an absorber between a liquid-permeable top sheet and a liquid-impermeable back sheet, and forms a first flap along both longitudinal edges of the diaper, Further, a second flap is provided inside the first flap in parallel with the first flap along both side edges of the diaper, and a stretchable elastic body is provided at each end of the first flap and the second flap. In a diaper that is provided and is configured to project to the front side when worn, the first flap is made of a breathable waterproof sheet adhered to both longitudinal edges of the back sheet, and Both longitudinal end edges of the first flap are folded back onto the top sheet and fixed to the top sheet, and the base end portion of the second flap is located at the narrowest portion of both longitudinal end edges of the absorbent body. Place on a surface sheet 1 to 50 mm inside from the edge It is a disposable diaper characterized by that.

[0006]

【Example】

 Hereinafter, the present invention will be described in more detail with reference to the drawings.

The diaper of the present invention may be fixed with a known diaper cover, or may be fixed with a band, a tape, fixing pants, or the like.

FIG. 1 shows an exploded plan view of an embodiment of the diaper of the present invention, FIG. 2 is an enlarged sectional view taken along line XX ′ of FIG. 1, and FIG. 3 is a view taken along line YY ′ of FIG. An enlarged sectional view taken along line ZZ ′ is shown. 4 is a plane development view of an embodiment of the present invention different from that of FIG. 1, FIG. 5 is an enlarged sectional view taken along line XX 'of FIG. 4, and FIG. 6 is a view taken along line YY' of FIG. An enlarged sectional view taken along line ZZ 'is shown.

First, the present invention will be described with reference to FIGS. 1 to 3. The diaper of the present invention has a front sheet 1, a back sheet 2, and an absorber 3 between them. As the topsheet 1, a liquid-permeable nonwoven fabric, woven fabric, porous plastic film, or the like is used. The back sheet 2 is made of a liquid impermeable polyethylene film or the like. The absorber 3 is sandwiched between the front sheet 1 and the back sheet 2, and is made of cotton-like pulp, absorbent paper, a highly water-absorbent polymer substance, or the like. The shape of the absorber 3 may be rectangular or hourglass-shaped.

The first flap 4 is made of a breathable / water repellent non-woven fabric, which is continuously treated with a back sheet, and which has been subjected to a silicone treatment, a breathable / waterproof microporous film, and the like, and the top end is folded to form a loop shape. A stretchable elastic body 5 is fixed inside by a hot-melt adhesive 9 in a stretched state. Further, the first flap 4 is folded back on the absorbent body and fixed on the topsheet by the adhesive 10 in the vicinity of both longitudinal ends of the diaper (see FIG. 3). When the first flap 4 is worn, it rises upward due to the contraction of the stretchable elastic body 5, so that leakage of urine or feces can be physically prevented. The height of the first flap is suitably 10 to 100 mm, more preferably 20 to 60 mm. As the stretchable elastic body 5, natural thread rubber, synthetic thread rubber, urethane foam, urethane film or the like which is usually used in diapers for use is used.

The second flaps 6 are installed on both side edges of the inner diaper of the first flap 4. The second flap 6 is made of a breathable non-woven fabric or the like. In the embodiment shown in FIGS. 1 to 3, the second flap 6 may be formed by bending both side edge portions of the topsheet 1 so as to wrap the stretchable elastic body 7 inside, or alternatively, FIGS. Like the diaper of the embodiment different from the former shown in FIG. 6, the stretchable elastic body 7 may be wrapped inside with a nonwoven fabric which is a member different from the topsheet 1. The stretchable elastic body 7 wrapped inside is fixed in a stretched state by a hot melt adhesive 9.

The second flap 6 is installed along the longitudinal direction of the diaper, and its base end portion 8 is fixed by a hot melt adhesive 11 on the surface sheet on the inner side of both side edge portions of the absorbent body. In addition, it is appropriate that the fixed position of the base end portion 8 be within 1 to 50 mm from the narrowest part of both side edge portions in the longitudinal direction of the absorbent body. If the position is less than 1 mm, a urine pool is likely to be formed, and if it exceeds 50 mm, the urine absorption area is narrowed, and conversely, it tends to leak.

Further, the second flap 6 is laid down in the outer or inner direction of the diaper at both longitudinal ends of the diaper, and is fixed to the surface sheet with the hot melt adhesive 10. 1 to 3 are embodiments in which the second flap is laid down in the outer direction of the diaper at both longitudinal ends of the diaper, and FIGS. 4 to 6 are examples in which the second flap is laid down in the inner direction of the diaper. . As a method for fixing the base end portion and both end portions in the longitudinal direction, there are a method using a hot melt adhesive, a heat seal welding method, an ultrasonic welding method, and the like, or a combination thereof.

The second flap 6 is preferably water-repellent in order to enhance the leakproof effect. The stretchable elastic body 7 may be the same as that of the first flap 4. Since the second flap 6 stands up due to the contraction of the stretchable elastic body 7 when worn, it can physically prevent leakage of urine and feces, and its base end is located on the absorber. Since it is difficult to form a pool of urine, the leak prevention effect can be further enhanced. The height of the second flap 6 is preferably 5 to 60 mm, more preferably 20 to 50 mm.

[0015]

[Effect of the device]

 According to the present invention, since it is a double flap and the base end of the inner flap is located on the absorber, leakage of urine and feces can be reliably prevented, and the flap is breathable. It is possible to provide a disposable diaper that does not cause rashes or rashes.

[Brief description of drawings]

FIG. 1 is an exploded plan view showing an embodiment of a diaper of the present invention.

FIG. 2 is a sectional view taken along line XX ′ in FIG.

FIG. 3 is a cross-sectional view taken along line YY ′ and line ZZ ′ of FIG.

FIG. 4 is an exploded plan view showing an embodiment of a diaper of the present invention different from that of FIG.

5 is a cross-sectional view taken along line XX ′ of FIG.

6 is a cross-sectional view taken along line YY 'and line ZZ' of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Top sheet, 2 ... Back sheet, 3 ... Absorber, 4 ... First flap, 5 ... Stretchable elastic body, 6 ... Second flap, 7
... Stretchable elastic body, 8 ... Base end portion, 9, 10, 11 ... Hot melt adhesive

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takuya Yamaguchi Inventor Takuya 1-10-6 Shinonome, Koto-ku, Tokyo Oji Paper Co., Ltd. Research Center

Claims (2)

[Scope of utility model registration request] 1. An absorbent body (3) is provided between a liquid-permeable top sheet (1) and a liquid-impermeable back sheet (2), and the absorbent body (3) is provided along both longitudinal edges of the diaper. A first flap (4) is formed, and a second flap is provided inside the first flap along both side edges of the diaper in parallel with the first flap, and each of the first flap and the second flap is provided. In a disposable diaper that has elastic elastic bodies at its ends and is configured to project to the front side when worn, the first flap is made of a breathable waterproof sheet adhered to both longitudinal edges of the back sheet. Further, both longitudinal end edges of the first flap are folded back onto the top sheet and fixed to the top sheet, and further, the base end portion of the second flap is the narrowest of both longitudinal end edges of the absorbent body. 1 to 50m from the end of the part
m A disposable diaper characterized by being placed on the inner surface sheet. 2. The disposable diaper according to claim 1, wherein the second flap is formed of a topsheet.