JPH0690979A - Liquid impermeable protection article - Google Patents

Abstract

PURPOSE: To obtain a protector providing high flexibility in the worn condition, preventing liquid leakage and giving comfortableness of wear for a long time, by pasting the inside of a liquidimpermeable elastic-body sheet with liquid permeable unwoven cloth at connection parts, continuously in one direction and discontinuously in the direction rectangular to the former. CONSTITUTION: A first part 11 with the shape covering the front of the loins of the body and a second part 12 with the shape covering the back of the loins of the body are obtained by cutting approximately rectangularly a complex sheet 1 in which a side of a liquid-impermeable sheet-type elastic body 2 is pasted with unwoven cloth 3, folding it double at the center of the longitudinal direction, and connecting both parts with each other at connecting parts 13 positioned on both sides of them. Moreover, between the unwoven cloth 3 and elastic-body sheet 2, a great number of slender channels 5 are formed. In this way, due to good ventilation and flexibility of the unwoven cloth 3 itself and channels 5, an excellent wearing feeling with adequate softness to the skin can be obtained. The outside elastic-body sheet 2 prevents liquid leakage and can be used for a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid-impermeable protective article in the form of pants, and more specifically, it is used as an absorbent article product such as a diaper or a sanitary article and its cover to leak body fluid to the outside. The present invention relates to a liquid-impermeable protective article for preventing adult, such as for adults, for women and for infants.

[0002]

2. Description of the Related Art When using diapers and sanitary products,
When body fluids that exceed the absorbent capacity of the absorbent product are excreted,
To avoid the risk of leaking some of your body fluids and soiling your clothes,
It is common to wear protective items such as pant-shaped covers or underwear composed of liquid-impermeable sheets.
Since such a protective article is required to have sufficient liquid impermeability, it is generally constructed by using a sheet of liquid impermeable synthetic resin or a sheet of cloth coated with synthetic resin.

[0003]

The liquid-impermeable sheet used for such a conventional liquid-impermeable protective article has sufficient performance in terms of liquid impermeability, but is poor in flexibility, Therefore, it is not possible to fit a complicated shape of the body when worn, and satisfactory liquid leakage prevention performance cannot be realized. Another drawback is that the conventional liquid-impermeable protective article has no breathability, so that it is unavoidable that the liquid-impermeable protective article becomes stuffy due to perspiration during wearing, which also causes a reduction in usability. Furthermore, it is desirable to dispose of such products after one-time use from the viewpoint of hygiene.
The liquid impermeable sheets used in conventional products are expensive and therefore difficult to dispose of.

It is an object of the present invention to provide a liquid-impermeable protective article which exhibits high flexibility in a worn state and, therefore, exhibits sufficient liquid leakage prevention performance and can be worn comfortably for a long time. Is.

[0005]

According to the present invention, in a liquid-impermeable protective article in the form of pants covering the waist of a body, the main body of which is composed of a composite sheet, wherein the composite sheet is elastic. Body sheet and a composite sheet made of a non-woven fabric laminated on at least one surface of the elastic body sheet, and between the elastic body sheet and the non-woven fabric, continuously in the first direction, and orthogonal thereto. Second
The non-woven fabric is bonded to the elastic sheet so as to have a predetermined clearance discontinuously in the direction of, and a large number of parallel channels extending in the first direction are formed. A featured liquid impermeable protective article is provided.

The main body of the liquid-impermeable protective article of the present invention is a composite body in which a liquid-impermeable elastic sheet and a liquid-permeable nonwoven fabric are joined together so as to form a large number of channels therebetween. It is composed of a body sheet, and liquid is prevented from leaking outside by being blocked by an outer liquid impermeable elastic sheet. In addition, the non-woven fabric located inside forms a passage of air between the inside of the channel and between the outer surface of the channel and the body surface of the wearer, and the ventilation performed through this passage effectively prevents stuffiness and keeps it for a long time. Can be worn comfortably.

Further in accordance with the present invention there is provided a liquid impermeable protective article in which the aforementioned body in the form of pants is provided with absorbing means for absorbing body fluids. As absorption means,
It may be an absorbent product such as a normal diaper, sanitary napkin or incontinence pad.

According to another aspect of the invention, the composite sheet forming the body in the form of pants has, in at least part of the body, an absorbent material seated in the channel.

As the absorbent to be seated in the channel, a hydrophilic material such as wood pulp or cotton, or a synthetic fiber material such as polypropylene or polyester, which is subjected to an appropriate hydrophilic treatment to impart hydrophilicity, is used. I can, but
Desirably, the so-called S. cerevisiae, which has the ability to absorb several tens of times its own weight of water or aqueous liquids. A. P. (SuperA
bsorbent polymer) is used.

The superabsorbent used in the present invention may be directly used in the form of particles, but in this case, the nonwoven fabric forming the wall of the channel should have a high filter function for preventing the particles from falling off. Will be needed. Therefore, the more preferable form of the super absorber is as follows. That is, a sheet obtained by cutting a sheet-like material obtained by compositing superabsorbent particles with wood pulp or a fiber web into an appropriate width, or a fibrous superabsorbent (for example, commercially available from Toyobo Co., Ltd.) There is a fiber bundle consisting of the product name "Lanceir"). Further, it is a web surface-coated with a superabsorbent obtained by impregnating a fibrous web with a monomer and then polymerizing and crosslinking the same, for example, a compressed composite made by Warehauser Co., which is slit into a band shape.

The volume of the absorbent material increases by absorbing the liquid. In particular, the superabsorbent has a significantly large difference in volume before and after absorbing the liquid. Therefore, if an absorber with a cross-sectional area that occupies most or all of the cross-section of the space inside the channel is arranged, the channel will expand in the cross-section direction by the amount of expansion of the superabsorber after absorption. However, since this expansion is absorbed mainly by the expansion of the elastic sheet, there is no problem. However, if the expansion during absorption is significant, such as in a superabsorbent, or if such dimensional changes are not desired, the cross-sectional area of the absorbent should not exceed the cross-sectional area of the channel during expansion. It is desirable to set to. Further, by arranging such a free space, the water swelling power of the absorber is not obstructed, so that the absorbent power of the absorber can be fully exerted.

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

[0013]

1 is a perspective view showing an example of a pants-type liquid-impermeable protective article constructed according to the present invention, and FIG. 2 is a sectional view taken along the line A--A of FIG. In the figure, the liquid impermeable protective article comprises a main body 10 consisting of a first portion 11 shaped to cover the front of the waist of the body and a second portion 12 shaped to cover the rear of the waist of the body. The first and second portions 11 and 12 are formed by cutting a composite sheet 1 described below into a substantially rectangular shape, and doubly folded at the central portion in the lengthwise direction. It is formed by connecting to.

As shown in detail in FIG. 3, the composite sheet 1 constituting the first and second portions 11 and 12 has a nonwoven fabric 3 laminated on one surface of a liquid-impermeable sheet-like elastic body 2. The structure is such that the connection between the two is regarded as a connection line 4 extending parallel to each other at a predetermined interval. Then, between the two adjacent connecting lines 4 and 4, the non-woven fabric 3
Is wider than the width of the elastic sheet 2, and as a result, a large number of channels 5 extending in parallel directions are formed between the elastic sheet 2 and the nonwoven fabric 3. Then, the composite sheet 1 has the desired first and second portions 1
The non-woven fabric 3 is cut according to the shapes and dimensions of 1, 12
Are connected to each other so that they are inside.

In the liquid-impermeable protective article 10 having such a structure, it is the non-woven fabric 3 positioned inside that comes into contact with the body when worn, and a large number of non-woven fabrics 3 and the elastic sheet 2 are provided between them. Elongated channels 5 are formed. Therefore, the breathability and flexibility of the non-woven fabric 3 itself and the channel 5 give an excellent feeling of use due to good touch. Further, the elastic sheet 2 located outside
Since it is liquid impermeable, it can effectively prevent liquid from leaking to the outside.

In the example of FIG. 1, the first and second parts 1
The main body 10 made of 1, 1 is single-layered at all parts thereof, but as shown in FIGS. 4 and 5, a similar composite sheet is provided at the upper end of each of the first and second parts 11, 12. A strip-shaped reinforcing member 14 obtained by cutting 1 into an appropriate width can be stacked to form a double structure. In this case, the strength of this part increases and the elastic contraction force also increases, and it will not break even if it is carelessly handled during wearing,
In addition, stability on the waist during wearing is improved. Body 1
The 0 and the reinforcing member 14 can be easily joined by using thermocompression bonding or a hot melt adhesive. This stiffening structure makes the body 10 longer than desired,
It can also be formed by folding back the upper end.

As shown in FIGS. 6 and 7, the main body 1
In the portion corresponding to the crotch portion of 0, the reinforcing member 15 cut into a shape corresponding to this portion may be overlapped to form a double structure. Alternatively, as shown in FIGS. 8 and 9, the reinforcing members 14a and 14b may be attached only to the two portions of the main body 10 located around the leg holes. In any case, since the leg hole portion to which a large tensile force is applied at the time of attachment / detachment is doubled, the damage at this portion is effectively prevented.

The reinforcement of the crotch portion or the leg hole portion may be used together with the reinforcement of the waist portion shown in FIG.

FIG. 10 illustrates a liquid impermeable protective article 20 according to another embodiment of the present invention. In the liquid impermeable protective article 20 of this example, the first portion 11 and the second portion 12 are joined by the joining portion 13 and the folded portion 14 is formed at the upper end portion thereof, as in the case shown in FIG. It has a main body 10 of structure and an absorber 21 attached to the crotch portion.
The absorber 21 may be in the form of, for example, a normal diaper or a sanitary napkin, and is fixed at a predetermined position by means of adhesive bonding or hot melt.

Since the general absorbent body as described above has rigidity itself and therefore does not have the elasticity and flexibility unlike the composite sheet, it can be used in the main body of the product of the present invention comprising the composite sheet. When the absorber having such rigidity is attached, expansion and contraction of the attached portion will be hindered. In order to avoid such inconvenience, it is desirable to adopt a mounting structure as shown in FIGS. 11 and 12, for example. That is, the absorbent body 21 shown in FIG. 11 is composed of an absorbent material 22 and a liquid-permeable cover 23 that wraps the absorbent material, and the adhesive is provided only in the narrow strip-shaped joint portion 24 that extends over substantially the entire length in the widthwise central portion. Alternatively, it is bonded to the nonwoven fabric side of the composite sheet 1 by means of hot melt or the like. According to such a configuration, the composite sheet is less restrained by the binding of the absorbent body 21, and the absorbent body 21 exists independently of the stretching motion of the composite sheet. It adapts to dimensional changes due to deformation or absorption of liquid, and since it does not shift from the predetermined position, it prevents leakage more completely and at the same time gives a very comfortable feeling.

Alternatively, as shown in FIG. 12, the absorber 21
As the top sheet, which has a liquid-permeable top sheet 25 that covers the upper surface and the side surface of the absorbent material 22 and a back sheet 26 that covers the lower surface of the absorbent material 22, is used. 25 and the extending portions of the back sheet 26 are bent in a U-shape below the absorber 21, and are joined to the composite sheet 1 by means such as adhesion or hot melt at a belt-like joining portion 27 located at the tip thereof. It can also have a structure. In this configuration, the absorber 21 and the composite sheet are more partially bonded, so that the absorber 21 is in a state of being lifted from the composite sheet, and the movement of the absorber 21 and the composite sheet. The movement becomes more independent, and the leak-proof property equal to or higher than that in the case of FIG. 10 and the comfortable feeling can be obtained.

FIG. 13 shows a liquid impermeable protective article 30 according to another embodiment, which is designed to further improve the effect of the present invention. In this example, as the composite sheet 1,
As shown in FIG. 14, a channel 5 formed between an elastic sheet 2 and a non-woven fabric 3 with an absorber 6 seated therein is used. The absorber material does not need to be provided on the entire composite sheet 1, and may be provided only on the crotch portion that may come into contact with body fluid, as shown in FIG. This absorber 6
Absorbs the body fluid that has permeated the non-woven fabric 3 and flowed into the channel 5, so that it is not necessary to provide a separate absorber. As the absorbent material 6, an absorbent material that is generally used in diapers and sanitary napkins can be used in a string shape, but the most suitable absorbent material is a powder-shaped, rod-shaped or string-shaped super absorbent material. is there. Whatever absorbent material is used, its cross-sectional area is preferably smaller than that of the channel 5 in order to absorb the expansion of the volume due to the absorption of liquid.

In each of the embodiments shown in FIGS. 1 to 14, the main body is formed with a notch serving as a leg hole at the center of both side edges of one substantially rectangular composite sheet 1.
Although the main body 10 is formed by bending it in the center and joining it at both side edges, as shown in FIG. 15, the main body 10 cuts the first portion 11 and the second portion 12 separately to join the both side edges. It can be configured by joining the portions 13 and the joining portion 15 at the lower end.

Further, in each of the above-mentioned embodiments, the connecting portion for connecting the first portion 11 and the second portion 12 to each other is a suitable connecting means, for example, heat, with the nonwoven fabrics 3 located inside facing each other. Although it may be joined by a seal, adhesion with a hot melt adhesive, or the like, FIG.
As shown in FIG. 1, the composite sheet 1 is folded back at an appropriate length at a portion corresponding to the joint portion, preferably at a length equal to the width of the joint portion to form a folded portion 1a.
It is desirable to join along the bond line at a. In this case, the non-woven fabric 2 folded back in a U shape is located at the tip of each joint, and compared to the case where the cut end of the elastic sheet 2 projects at this portion, the skin and other When touching the clothes, the feeling or slippage is improved and a good wearing feeling is obtained. Further, the joining of the composite sheets 1 in the joining portions 13 and 15 may be performed along two joining lines that are parallel to each other as shown in FIG. 16, but in FIGS. The pattern may be as shown in FIG. In particular, since the discontinuous patterns shown in FIGS. 17B to 17N have smaller bond strength than the continuous line pattern,
It is particularly suitable for products such as diaper covers, where it is desired to tear body 10 apart to remove it from the wearer.

[0025]

As described above, in the liquid impermeable protective article of the present invention, the liquid impermeable elastic sheet is provided with the liquid impermeable nonwoven fabric on the inner surface thereof continuously in one direction. Discontinuously in a direction substantially orthogonal to, is bonded at the bonding portion, thereby, between the nonwoven fabric and the elastic sheet, since it is composed of a composite sheet having a plurality of channels extending parallel to each other, While surely preventing body fluid from leaking to the outside, it is possible to give a comfortable feeling based on good touch and breathability. It is also possible to provide an absorber at a predetermined position, and a single article can perform the two functions of the absorber and the protective article.

Moreover, since the composite sheet is extremely flexible, it can be folded compactly and is convenient to carry even if an absorber is provided. Moreover, since the overall cost is low, it can be disposable.

[Brief description of drawings]

FIG. 1 is a perspective view showing a liquid-impermeable protective article according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a partial perspective view of a composite sheet used in the liquid impermeable protective article of FIG.

FIG. 4 is a perspective view of a liquid impermeable protective article according to a second embodiment of the present invention.

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is a front view of a liquid impermeable protective article according to a third embodiment of the present invention.

7 is a sectional view taken along the line CC of FIG.

FIG. 8 is a front view of a liquid impermeable protective article according to a fourth embodiment of the present invention.

9 is a cross-sectional view taken along the line DD of FIG.

FIG. 10 is a sectional view of a liquid impermeable protective article according to a fifth embodiment of the present invention.

11 is a cross-sectional view showing an absorbent body and its mounting portion in the liquid-impermeable protective article of FIG.

12 is a cross-sectional view showing another absorbent body and its mounting portion in the liquid-impermeable protective article of FIG.

FIG. 13 is a cross-sectional view of a liquid impermeable protective article according to a sixth embodiment of the present invention.

14 is an enlarged cross-sectional view of a part of FIG.

FIG. 15 is a perspective view showing a liquid impermeable protective article according to a seventh embodiment of the present invention.

FIG. 16 is a cross-sectional view showing a preferred form of a joint portion of the liquid-impermeable protective article of the present invention.

FIG. 17 is an explanatory view showing an adhesive pattern applied to the joint portion of the liquid-impermeable protective article of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 sheet-like absorber 2 elastic body 3 non-woven fabric 4 bonding line 5 channel 6 absorber 10 20,20 30 main body 11 1st part 12 2nd part 13,15 joining part 14 reinforcing member 21 absorber 22 absorber 23 cover 24 joining part 25 top sheet 26 back sheet 27 joining part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location A61F 13/72 7729-4C A61F 13/16 360

Claims (5)

[Claims] 1. A liquid-impermeable protective article in the form of pants covering a waist of a body, the main body of which is composed of a composite sheet, the composite sheet being an elastic sheet, and at least the elastic sheet. It is composed of a composite sheet made of non-woven fabric laminated on one surface, and between the elastic sheet and the non-woven fabric is continuous in the first direction and discontinuous in the second direction orthogonal thereto. The liquid impermeable, wherein the non-woven fabric is bonded to the elastic sheet so as to have a predetermined clearance, and a large number of parallel channels extending in the first direction are formed. Protective supplies. 2. The liquid-impermeable protective article according to claim 1, wherein the composite sheet is doubled at at least one part of the waist, crotch or leg hole periphery of the main body. 3. The liquid-impermeable protective article according to claim 1, wherein an absorbent body is attached to the inside of the main body. 4. The liquid-impermeable protective article according to claim 1, wherein an absorbent material is arranged on at least a part of the channel. 5. The liquid-impermeable protective article according to claim 1, wherein the absorbent material contains a superabsorbent.