JPH0246844A - Manufacture of disposable diaper having besilient member mounted thereto - Google Patents

Abstract

PURPOSE:To simplify its manufacturing process and reduce its manufacturing cost, by disposing respective plural pieces of rubber yarn transversely within the reverse face region and longitudinally within the opposite side portions of the main body of a diaper and connecting them, and cutting them at the upper and lower ends of the main body of the diaper. CONSTITUTION:Each of disposable diapers comprises an absorbing pad 3 interposed between the outer face sheet 2 of a water impermeable (water proofing) sheet such as a synthetic resin P, E sheet, and the inner face sheet 1 of a water permeable sheet such as an unwoven cloth. Also, a mounting tape 4 is stuck over the reverse face region of the main body of each of the diapers while it is made to protrude from opposite sides of the body. Plural continuous pieces of rubber yarn 5, to which a reverse face portion resilient member A disposed transversely within the reverse face region, and side resilient members B disposed in the vicinity of the respective side portions of the absorbing pad 3 are stuck while they are interposed between the outer face sheet 2 and the inner face sheet 1, are disposed transversely within the reverse face region and approximately longitudinally within the other regions. The plural pieces of rubber yarn 5 are then stuck on the part above the outer face sheet 2 and the mounting tape 4, and then the inner face sheet 1 is stucked to the pieces, and thus the expendable diapers are continuously produced and they are cut from each other at a cutting line C-C.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method of manufacturing a disposable diaper equipped with an elastic member.

○Prior art and its problems In general disposable diapers, 0 to 1 parts of horizontal elastic members are attached to the back of the disposable diaper in order to make it fit tightly against the wearer's body and to prevent leakage of bodily fluids. A longitudinal elastic member is attached to the.

Polyurethane foam ribbon is generally used as the above-mentioned elastic member, but although it is easy to use in production processes and has a good feel, it is expensive and has the problem of increasing product cost.

By applying rubber thread, which is cheaper than the polyurethane foam and ribbon mentioned above, it is possible to reduce material costs, but it is extremely difficult to add the process of attaching the rubber thread to the production process of the diaper body. There are other problems, such as the difficulty and complexity of the equipment, and the need to take into account the issue of crotching.

OObject of the present invention The present invention aims to solve the above-mentioned problems in the prior art.
Elastic members are supplied along the manufacturing line of the diaper body (water-impermeable outer sheet, water-permeable inner sheet, etc. are supplied as a single band from an roller and cut into specified dimensions). In order to achieve this goal, rubber thread is continuously supplied instead of the conventional elastic member that is cut into predetermined dimensions and supplied, thereby simplifying the production process and reducing product costs.

OMeans for achieving the above object The second invention of the present application has a plurality of rubber threads arranged in the horizontal direction in the back area of the diaper main body, and the other parts are arranged in the longitudinal direction on both sides of the diaper main body. The back elastic member and the side elastic members, which are arranged in a continuous manner and cut at the upper and lower ends of the diaper main body to be attached to the diaper main body, are made of a plurality of continuous rubber threads.

In the second invention of the present application, in the first invention, the rubber thread disposed laterally in the back area of the diaper main body is extended to the mounting tape, and the mounting tape and the diaper main body are extended integrally.

○Example The following description will be made based on the embodiments shown in the drawings.

The first embodiment will be explained with reference to FIG. 1 showing a plan view of a disposable diaper exhibition space, and FIGS. 2 and 3 showing longitudinal cross-sectional views.

It is possible to construct a disposable diaper by interposing an absorbent pad 3 between an outer sheet 2 that is a non-water permeable (waterproof) sheet such as a synthetic resin P or E sheet and an inner sheet 1 that is a water permeable sheet such as a non-woven fabric. Same as conventional products. Furthermore, a mounting tape 4 is adhered to the back area of the diaper main body so as to protrude to both sides.

In the disposable diaper manufactured according to the present invention, the back elastic member A disposed laterally in the back region and the side elastic member B near the side of the absorbent pad 3 are connected to the outer sheet 2 and the inner sheet 1. A number of continuous rubber threads 5 are interposed and bonded between the rubber threads 5 in the transverse direction in the back region and in the elongated direction in other cases.

In addition, in carrying out the second invention of the present application, the adhesive tape 4
However, in implementing the first invention, the object of the invention is achieved by arranging the rubber thread 5 laterally only within the range of both sheets 1 and 2 in the back area. can do.

In the first embodiment shown in FIGS. 1 to 3, there are eight rubber threads in the back area where it contacts the user's waist, and four rubber threads in the side area around the thighs. Thread 5 is arranged to enhance the elasticity around the waist.

In the second embodiment shown in FIGS. 4 and 5, only a part of the waist area has elasticity, and the elastic member A of the back part has a rubber thread SC in the center part to save the rubber thread. There is.

In the third embodiment shown in FIGS. 6 and 7, the first
As in the embodiment, the back image elastic member A is made of eight rubber threads, but since each side is tilted independently in a symmetrical shape from the center, the mechanical device for attaching the rubber threads can be simplified.

In any of the first, second, and third embodiments, a plurality of (four) rubber threads 5 are attached to the outer sheet in a predetermined arrangement. By manufacturing a disposable diaper and cutting it along the cutting line C-C above the mounting tape 4 (or on the inner surface), attach the rubber thread 5.
is cut together with both sheets 1.2 to form a finished product.

O Effects of the Invention In this invention, the back elastic member and the side elastic member are formed using a plurality of continuous rubber threads, which makes it possible to reduce the material cost of the elastic member and to make the diaper body continuous. The manufacturing cost can be reduced by supplying the rubber thread along the production line and cutting it together with the outer sheet and the inner sheet to a predetermined size to produce a finished product.

The second invention of the present application extends the elastic member of the back part to the mounting tape, and by making the mounting tape stretch integrally with the diaper body, the reinforcement effect of the rubber thread allows the adhesive tape to stretch as in conventional products. can be prevented from being cut and separated from the diaper body.

[Brief explanation of the drawing]

FIG. 1 is a developed plan view of a disposable diaper showing a first embodiment of the present invention. FIG. 2 is a longitudinal sectional view taken along line S-S in FIG. 1. 311th! a is a vertical cross-sectional view taken along the 111!1Isz-sz line. FIG. 4 is a developed plan view similar to FIG. 1 showing the 11!2 embodiment of the present invention. FIG. 5 is a longitudinal sectional view similar to FIG. 2. FIG. 6 is a developed plan view similar to FIG. 1 showing a third embodiment of the present invention. FIG. 7 is a longitudinal sectional view similar to FIG. 2. 1...Inner sheet 2...Outer sheet 4...Attachment tape 5...Rubber thread A...Back elastic member B...Side elastic member

Claims (2)

[Claims] (1) A plurality of rubber threads are arranged horizontally in the back region of the diaper main body, and the other parts are arranged approximately vertically on both sides of the diaper main body so as to be continuous. A method for manufacturing a disposable diaper equipped with an elastic member, characterized in that the back elastic member and the side elastic member, which are cut at the lower end and attached to the diaper main body, are made of a plurality of continuous rubber threads. (2) A plurality of rubber threads are arranged in the horizontal direction by passing through the attachment tape from the back area of the diaper body, and the other parts are arranged in the longitudinal direction on both sides of the diaper body and are continuous. A disposable diaper equipped with an elastic member, characterized in that the back elastic member and the side elastic member, which are cut at the upper and lower ends of the diaper main body and attached to the diaper main body, are made of a plurality of continuous rubber threads. How to make diapers.