JP7058831B2 - Manufacturing method of absorbent articles - Google Patents

Description

The present invention relates to, for example, a method for producing an absorbent article that can be used as incontinence pants, menstrual napkins, and the like.

As a conventional absorbent article, incontinence pants in which an absorbent pad and an impermeable sheet are sewn with a sewing thread when covering the absorbent pad with an impermeable sheet are known.

However, in the above-mentioned absorbent article, body fluid such as urine absorbed by the absorbent pad may leak from the sewn portion (needle hole portion) and wet the pants itself or the outer garment.

The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide a method for producing an absorbent article which is excellent in liquid leakage prevention effect and can also improve productivity.

In order to achieve the above object, the method for producing an absorbent article according to the present invention is carried out by welding each of the impermeable opening sheet, the absorbent pad and the impermeable non-opening sheet in contact with each other. The opening sheet is a method for manufacturing an absorbent article having an opening that exposes a portion excluding a peripheral portion of the absorption pad, which comprises a laminated body that is laminated in this order without sewing and is integrated. The absorption pad is configured by integrating a plurality of layers by quilting processing, and as a sewing line for this quilting processing, one central line extending in the longitudinal direction of the absorption pad and extending to the front end and the rear end thereof. The quilted sewing line is composed of the central line, the outer peripheral line extending along the outer peripheral edge of the absorbing pad, and the inner peripheral line extending inward along the outer peripheral line. Most of the central line is exposed from the opening and the outer peripheral line is not exposed (claim 1).

In the method for producing an absorbent article , an outer fabric covering the entire surface of the laminated body is arranged on the non-opening sheet side of the laminated body, and the laminated body and the outer fabric are together with a strip-shaped cloth sandwiching the outer edges of both. The outer edges of the absorbent pads may be sewn to each other over the entire circumference so that the absorbent pad itself does not form a sewn portion with other constituent members (claim 2 ).

INDUSTRIAL APPLICABILITY According to the present invention, a method for producing an absorbent article which is excellent in preventing liquid leakage and can improve productivity can be obtained.

That is, since the absorbent article of the invention according to each claim of the present application can prevent the sewn portion (needle hole portion) from being formed in or near the absorbent pad itself, such a sewn portion is formed. Compared to conventional absorbent articles, the effect of preventing liquid leakage is superior, and productivity can be improved by reducing the number of parts to be sewn.

It is an exploded perspective view schematically showing the structure of the absorbent article which concerns on one Embodiment of this invention. It is a top view which shows the structure of the absorbent article schematically. It is a bottom view which shows the structure of the absorbent article schematically. It is explanatory drawing which shows the structure of the absorption pad of the absorbent article schematically. It is explanatory drawing which shows the structure of the modification of the absorbent article roughly.

Embodiments of the present invention will be described below with reference to the drawings.

The absorbent articles shown in FIGS. 1 to 3 are sanitary napkins and, as shown in FIG. 1, have an oval (rounded rectangle: a shape consisting of two parallel lines of equal length and two semicircles). It has an impermeable opening sheet 2 having an opening 1, an oval-shaped absorbing pad 3 slightly larger than the opening 1, and an impermeable non-opening sheet 4. These members 2 to 4 are integrated without sewing by welding (thermocompression bonding) to form a laminated body, except for the peripheral portion of the absorption pad 3 (for example, a portion having a width of about 8 to 10 mm from the outer peripheral edge toward the center). The portion (central portion) is exposed from the opening 1. That is, in the laminated body, the opening sheet 2, the absorbing pad 3, and the non-opening sheet 4 are welded to each other at the portions in contact with each other. The welding conditions (temperature, pressurization time, etc.) may be appropriately set within a range in which each member 2 to 4 does not become hard and has necessary properties such as resistance to washing.

Here, the opening sheet 2 and the non-opening sheet 4 have the same shape, and for example, a shape obtained by cutting out a portion corresponding to the opening 1 from the non-opening sheet 4 is configured to have the shape of the opening sheet 2. .. In this example, semi-circular protruding portions 2a are provided on the left and right sides of the opening sheet 2, and semi-arc-shaped protruding portions 4a are provided on the left and right sides of the non-opening sheet 4. The impermeable sheets 2 and 4 may be configured so as to be weldable as described above, for example, a nylon base cloth or a polyester base cloth (both are examples of non-thermoplastic layers). ) With a thermoplastic resin film (an example of a thermoplastic layer) laminated can be used as the sheets 2 and 4.

On the non-opening sheet 4 side of the laminated body (members 2 to 4) formed as described above, the outer cloth 5 covering the entire surface thereof is arranged, and the laminated body and the outer cloth 5 have a strip shape sandwiching the outer edges of both. Together with the cloth 6, they are sewn together on the outer edge of the cloth 6 over the entire circumference (see FIGS. 2 and 3). The outer fabric 5 has substantially the same shape as the non-opening sheet 4.

The absorption pad 3 shown in FIG. 4 has a six-layer structure in which the first layer L1 to the sixth layer L6 are laminated from the upper side (the side in contact with the background) to the lower side. Here, the first layer L1 is a polyester sheet (sheet made of polyester), the second layer L2 and the fifth layer L5 are polyester mesh (mesh knitted fabric made of polyester fiber), the third layer L3, the fourth layer L4 and the like. The sixth layer L6 is a non-woven fabric (for example, a non-woven fabric composed of polyester fibers or a non-woven fabric in which rayon fibers and acrylic fibers are mixed), and these six layers are integrated by a quilting process. The sewing line (sewing thread) 7 has a central line 7a extending in the center of the absorption pad 3 in the longitudinal direction, an outer peripheral line 7b extending along the outer peripheral edge of the absorption pad 3, and an inner side thereof along the outer peripheral line 7b. It is composed of an inner peripheral line 7c extending to.

As shown in FIG. 1, a cloth piece 8 is sewn on the protruding portion 2a of the opening sheet 2, and the cloth piece 8 is provided with a snap button 9. Further, a cloth piece 10 is sewn on the protruding portion 4a of the non-opening sheet 4, and the cloth piece 10 is provided with two snap buttons 11 corresponding to the snap buttons 9.

The absorbent article configured as described above is attached to the crotch part of the underwear so that the opening 1 faces inward, and the body fluid such as urine is absorbed by the absorption pad 3 exposed from the opening 1. Since it is possible to prevent the sewn portion (needle hole portion) from being formed in or near the absorbent pad 3 itself, the liquid leakage prevention effect is superior to that of the conventional absorbent article in which such a sewn portion is formed. The wearer can use it with peace of mind, and it can be washed and used repeatedly. Further, in the absorbent article of this example, the productivity can be improved by reducing the number of parts to be sewn together.

Further, as the quilted sewing line 7, only the central line 7a extends in the longitudinal direction of the absorption pad 3 and reaches the front end and the rear end thereof. It becomes difficult for the liquid or the like absorbed by the absorption pad 3 to leak out, and the liquid leakage prevention effect is enhanced in this respect as well.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be variously modified and implemented without departing from the gist of the present invention. For example, the following modification examples can be given.

In the above embodiment, the opening sheet 2, the absorption pad 3, and the non-opening sheet 4 are integrated by welding, but the present invention is not limited to this, and the opening sheet 2, the absorption pad 3, and the non-opening sheet 4 are integrated by, for example, adhesion using an adhesive (including adhesion). You may do it.

Further, in the above embodiment, an example in which the absorbent article is configured as a menstrual napkin is shown, but the present invention is not limited to this, and may be configured as, for example, incontinence pants. In this case, as shown in FIG. 5, a laminated body in which the opening sheet 2, the absorption pad 3 and the non-opening sheet 4 are integrated is provided on the inside (back side) of the front cloth 12 of the incontinence pants, and the opening sheet 2 is on the background side. It may be attached by sewing or the like so as to come to.

In the above embodiment, the absorbent pad 3 has a six-layer structure shown in FIG. 4, but the configuration of the absorbent pad 3 can be appropriately changed, for example, the thickness of the non-woven fabric of the third layer L3 and the fourth layer L4 can be changed. By increasing or decreasing or increasing or decreasing the number of non-woven fabrics used, it is possible to adjust the assumed absorption amount of body fluid.

Needless to say, the above-mentioned modifications may be combined as appropriate.

1 Opening 2 Opening sheet 2a Protruding part 3 Absorption pad 4 Non-opening sheet 4a Protruding part 5 Outer fabric 6 Strip-shaped cloth 7a Central line 7b Outer circumference line 7c Inner circumference line 8 Cloth piece 9 Snap button 10 Cloth piece 11 Snap button 12 Front cloth L1 1st layer L2 2nd layer L3 3rd layer L4 4th layer L5 5th layer L6 6th layer

Claims (2)

A non-sewn integrated laminate is provided in which the impermeable opening sheet, the absorbent pad and the impermeable non-opening sheet are laminated in this order by welding at the portion where the impermeable sheet is in contact with each other . The opening sheet is a method for manufacturing an absorbent article having an opening that exposes a portion other than the peripheral portion of the absorption pad.
The absorption pad is configured by integrating a plurality of layers by quilting processing, and as a sewing line for this quilting processing, only one central line extends in the longitudinal direction of the absorption pad and reaches the front end and the rear end thereof. And
The quilted sewing line is composed of the central line, an outer peripheral line extending along the outer peripheral edge of the absorption pad, and an inner peripheral line extending inward along the outer peripheral line, and the center line from the opening. A method for manufacturing an absorbent article in which most of the lines are exposed and the outer peripheral lines are not exposed . An outer fabric covering the entire surface of the laminated body is arranged on the non-opening sheet side of the laminated body, and the laminated body and the outer fabric are sewn together with a strip-shaped cloth sandwiching the outer edges of the laminated body over the entire circumference thereof. I'm wearing it
The method for manufacturing an absorbent article according to claim 1, wherein the absorbent pad itself does not form a sewn portion with other constituent members .

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