Anti-soiling sheet

Abstract

To provide an anti-soiling sheet that can reduce body soiling caused by defecation of a diaper wearer, thereby decreasing the number of diaper-changing operations required by a caregiver and further contributing to the prevention of infectious diseases.SOLUTION: The anti-soiling sheet comprises: a base material having an inner surface on the body side of the diaper wearer and an outer surface on the opposite side; an adhesive layer laminated on all or part of the inner surface of the base material; a non-adhesive pickup portion formed on at least part of the periphery of the adhesive layer or the periphery of the base material; and a release paper covering the adhesive layer on the inner surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a stain-preventing sheet that prevents fecal staining of the body of a diaper wearer. [Background technology]

[0002] Disposable diapers are widely used as nursing care diapers. Disposable nursing care diapers are generally pants-type or wrap-around types. The feces excreted by a wearer of a disposable nursing care diaper are received inside the diaper on the wearer's body side, and all or most of the feces are retained between the wearer's body and the diaper. This retained feces soils the wearer's body, particularly the genitals and gluteal cleft. Furthermore, when changing a diaper after defecation, the caregiver's hands may become soiled by the feces retained inside the diaper. To solve this problem, technologies related to diapers that can be placed in contact with the wearer's gluteal cleft and that have a feces storage compartment or a feces storage bag inside the diaper to receive and store the feces are described, for example, in Patent Documents 1 and 2 listed below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6959470 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-29378 Summary of the Invention [Problem to be solved by the invention]

[0004] However, even when a feces storage section or feces collection bag is attached inside the diaper, the feces are not necessarily guided neatly into the storage section, etc., and the feces may also flow back from the storage section, etc., so it is not necessarily possible to sufficiently reduce fecal soiling of the diaper wearer's body.

[0005] The object of the present invention is to provide a stain-resistant sheet that reduces body soiling caused by feces excreted by the diaper wearer (hereinafter sometimes simply referred to as the "wearer"), reduces the amount of work required for the wearer's caregiver (hereinafter sometimes simply referred to as the "caregiver") to change the care diaper, and minimizes infectious diseases caused by bacteria and other contaminants in the wearer's genitals, etc. In other words, the object of the present invention is to provide a stain-resistant sheet that reduces fecal soiling of the wearer's genitals and buttocks, makes the diaper comfortable to use, easy to change, and is convenient in terms of hygiene, etc. [Means for solving the problem]

[0006] The present invention is a stain-preventing sheet that prevents fecal staining of the body of a diaper wearer, and is characterized by comprising a substrate having an inner surface facing the body and an outer surface opposite the inner surface, an adhesive layer laminated to all or part of the inner surface of the substrate, a non-adhesive pick-up portion formed around the adhesive layer or at least part of the periphery of the substrate, and a release paper covering the adhesive layer on the inner surface.

[0007] The present invention also provides a stain-preventing sheet having a urination hole or a defecation hole formed so as to penetrate the substrate and the adhesive layer from the inner surface to the outer surface.

[0008] The present invention further relates to a stain-preventing sheet, wherein the urination or defecation hole is formed by a linear cut, an aperture, or a combination of a linear cut and an aperture.

[0009] The present invention also provides a stain-preventing sheet in which the urine outlet hole is capable of allowing a urethra to pass therethrough.

[0010] The present invention relates to a stain-preventing sheet, wherein the substrate is a nonwoven fabric, a woven fabric, a knitted fabric, paper, a water-impermeable film or an elastomer film.

[0011] Another aspect of the present invention is a stain-preventing sheet having a feces-receiving bag on the outer surface of the defecation hole.

[0012] In yet another embodiment, the present invention provides a stain-preventing sheet in which a top sheet is further laminated on a part of the inner surface. [Effects of the Invention]

[0013] The stain-preventing sheet of the present invention can minimize soiling of the genitals and buttocks caused by the diaper wearer's defecation and urination, thereby reducing the discomfort felt by the diaper wearer when wearing a diaper and the amount of work required for caregivers to change the diaper, thereby easing the mental and physical burden on the diaper wearer and caregiver. Furthermore, it reduces the risk of infection caused by germs in the genital area due to fecal soiling and simplifies the cleaning work of washing the genitals with hot water when changing a diaper, facilitating hygiene management in care businesses and helping to prevent infectious diseases. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a plan view of the stain-preventing sheet (A) of the present invention, showing the laminated structure of the sheet when a part of the release paper and adhesive layer has been peeled off and removed, respectively. [Figure 2] FIG. 1 is a plan view showing the stain-preventing sheet (A) of the present invention with the release paper completely peeled off. [Figure 3] FIG. 2 is a bottom view of the stain-preventing sheet (A) of the present invention. [Figure 4] FIG. 2 is a cross-sectional view of the stain-preventing sheet (A) of the present invention taken along line DD in FIG. [Figure 5] FIG. 1 is a plan view of the stain-preventing sheet (B) of the present invention, particularly showing an example in which the pickup portion is formed around the periphery of the substrate. [Figure 6] FIG. 2 is a plan view showing the stain-preventing sheet (B) of the present invention with the release paper completely peeled off. [Figure 7] FIG. 2 is a bottom view of the stain-preventing sheet (B) of the present invention. [Figure 8] FIG. 6 is a cross-sectional view of the stain-preventive sheet (B) of the present invention taken along line EE in FIG. [Figure 9] FIG. 2 is a plan view of the stain-preventing sheet (C) of the present invention. [Figure 10] FIG. 2 is a plan view showing the stain-preventing sheet (C) of the present invention with the release paper completely peeled off. [Figure 11] FIG. 2 is a bottom view of the stain-preventing sheet (C) of the present invention. [Figure 12] FIG. 10 is a cross-sectional view of the stain-preventive sheet (C) of the present invention taken along line FF in FIG. [Figure 13] 1A-1C show examples of embodiments of urination and defecation vents. [Figure 14] FIG. 1 is a diagram showing an example of wearing the stain-preventing sheet (A) of the present invention. [Figure 15] FIG. 2 is a diagram showing an example of wearing the stain-preventing sheet (B) or (C) of the present invention. [Figure 16] FIG. 2 is a diagram showing an example of wearing the stain-preventing sheet (B) or (C) of the present invention. [Figure 17] FIG. 2 is a diagram showing an example of wearing the stain-preventing sheet (B) or (C) of the present invention. [Figure 18] FIG. 1 is a perspective view showing a state in which a urination tube and a feces collection bag are attached to the urination hole (an example of a linear cut) and the defecation hole (an example of an open hole) of the stain-preventing sheet (B) of the present invention, respectively. [Figure 19] FIG. 19 is a cross-sectional view taken along line α-α in FIG. 18. [Figure 20] FIG. 19 is a cross-sectional view taken along the line β-β in FIG. 18. [Figure 21] FIG. 1 is a cross-sectional view showing a state in which a feces receiving bag is attached to the feces hole (an example of an open hole) of the stain-preventing sheet (B) of the present invention so as to be integrated with the substrate. [Figure 22] FIG. 1 is a cross-sectional view showing a state in which a urination tube is attached to a urination hole (an example of an open hole) of the stain-preventing sheet (B) of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described. It should be noted that these embodiments are merely examples shown for the sake of convenience in explanation, and the present invention is not limited to these examples in any sense.

[0016] FIG. 1 is a plan view of the stain-resistant sheet of the present invention (hereinafter sometimes simply referred to as "Type A"), showing the laminated structure of the sheet when a portion of the release paper and adhesive layer has been peeled off and removed, respectively, and FIG. 4 shows a cross section of such a laminated structure.

[0017] As shown in Figures 1, 2, 3 and 4, the stain-resistant sheet (Type A) of the present invention is composed of a substrate having an inner surface that comes into contact with the body of the diaper wearer and an outer surface on the opposite side, an adhesive layer laminated on all or part of the inner surface of the substrate, a non-adhesive pick-up portion formed around at least a part of the adhesive layer, and a release paper covering the adhesive layer on the inner surface.

[0018] The substrate in the present invention may be a nonwoven fabric, a woven fabric, a knitted fabric, paper, a non-water-permeable film, or an elastomer film, and among these, nonwoven fabric, woven fabric, knitted fabric, or an elastomer film having excellent stretchability is preferably used.

[0019] Natural and synthetic fibers can be used as materials for nonwoven, woven, or knitted fabrics, but it is better to use natural fibers that can be decomposed in nature. Naturally decomposable materials such as water-repellent treated paper and biodegradable plastics can also be used.

[0020] As the material for the non-permeable film, polyethylene, polypropylene, and other polymeric materials can be suitably used.

[0021] As the elastomer film, a sheet or film made of elastic natural or synthetic rubber can be used, and rubbers such as natural rubber latex, water-based or solvent-based polyurethane or polyisoprene, which are particularly excellent in elasticity, tensile strength, safety, etc., can be preferably used.

[0022] The outer peripheral contour shape of the substrate is rectangular, which is most readily available and suitable for production because it generates minimal waste during production. However, various shapes may be used as needed, such as a gourd-like shape with a constricted central portion, to conform to the shape of the wearer's body, such as the genitals or buttocks, to facilitate adhesive fixation during use, to prevent the adhesive portion from peeling off, or to improve the fit when worn, as long as the object of the present invention can be achieved.

[0023] The size of the base material is approximately 200 mm in length and 200 mm in width for Type A, and approximately 300 mm in length and 200 mm in width for Types B and C, but this can be changed as appropriate taking into account the wearer's physique, etc.

[0024] The adhesive layer of the present invention is formed by laminating an adhesive on a substrate, and is laminated on all or part of the inner surface of the substrate.

[0025] Examples of adhesives include, but are not limited to, urethane gel, rubber-based adhesives, acrylic-based adhesives, silicone-based adhesives, and hydrocolloids.

[0026] The release paper (3) covers the surface of the adhesive surface (2) when the stain-preventing sheet of the present invention is stored, and serves to prevent deterioration of the adhesive part and adhesion of stains, and is peeled off and stuck to the wearer's body when in use.

[0027] The pick-up part (4) is not coated with adhesive, and when peeling off the adhesive layer from the wearer's body after use, the stain-preventing sheet of the present invention can be easily removed by pinching and pulling this pick-up part (4). In other words, if the adhesive layer (2) that has adhered to the wearer's body is peeled off directly with the fingertips or nails, there is a risk of injuring the wearer's skin, but the pick-up part (4) prevents such inconvenience.

[0028] The pickup portion (4) must have a predetermined width and thickness. The width should be about 2 mm to about 10 mm, and preferably about 3 mm to about 5 mm. The thickness should be as thin as possible so that the wearer does not feel uncomfortable when wearing it. The shape of the pickup portion (4) may be a single continuous portion or multiple discontinuous portions, and the width may be constant or variable. It is important to install it in a way that makes it as easy as possible to peel off the used stain-preventing sheet.

[0029] The pickup portion (4) is a non-adhesive member or portion formed around the adhesive layer or at least part of the base material. Figures 2 and 10 show examples in which multiple pickup portions are formed around the adhesive layer, and Figure 6 shows an example in which multiple pickup portions are formed around the base material.

[0030] When forming a pickup portion around the adhesive layer, the pickup portion can be formed by not applying adhesive to the portion where the pickup portion is to be formed, or by attaching a small non-adhesive member to the adhesive layer in the portion where the pickup portion is to be formed.

[0031] Furthermore, when forming a pickup portion around the periphery of the base material, it can be formed relatively easily by, for example, forming a portion to be picked up around the periphery of the base material in advance and then applying adhesive to avoid that portion. Alternatively, it can be formed by fixing at least one small member to be picked up around the periphery of the base material by adhesion or fusion bonding.

[0032] The pickup section 4 is made of a flexible material. Examples of flexible materials for the pickup section 4 include paper, rubber, and sponge materials, as well as resin materials. Paper materials that have a certain degree of flexibility and water resistance are suitable. Examples of rubber materials include silicone rubber, chloroprene rubber, urethane rubber, and ethylene ethylene propylene rubber. Examples of sponge materials include cellulose sponge, polyurethane sponge, and melamine sponge. Examples of the resin materials include silicone resin, polyurethane resin, and soft vinyl chloride resin.

[0033] 5 and 8 show a plan view and a cross-sectional view, respectively, of a stain-preventing sheet according to a different embodiment of the present invention (hereinafter, sometimes simply referred to as "Type B").

[0034] As shown in Figures 5, 6, 7 and 8, the stain-resistant sheet (Type B) of the present invention is the stain-resistant sheet (Type A) of the present invention, which further has a urination hole or a defecation hole formed so as to penetrate through the substrate and the adhesive layer from the inner surface to the outer surface.

[0035] Furthermore, FIGS. 9 and 12 show a plan view and a cross-sectional view, respectively, of a stain-preventing sheet according to still another embodiment of the present invention (hereinafter, sometimes simply referred to as "Type C").

[0036] As shown in Figures 9, 10, 11 and 12, the stain-preventing sheet (type C) of the present invention is configured such that the stain-preventing sheet (type B) of the present invention further includes a top sheet around the urination hole.

[0037] Here, the top sheet (7) is intended to hygienically protect the genitals, etc., of the wearer, particularly when the wearer is a woman, reduce the risk of infection, and improve the comfort of using the stain-preventing sheet. That is, it prevents the adhesive surface of the stain-preventing sheet from coming into direct contact with the particularly delicate genitals, etc., and improves the comfort of using the sheet for the wearer by making the part that comes into direct contact with the skin hypoallergenic or water-permeable to ensure a dry state. Therefore, the stain-preventing sheet (Type A) of the present invention may also be configured to include a top sheet in the part that comes into contact with the genitals, etc., of the wearer.

[0038] Examples of materials for the top sheet (7) include nonwoven fabric, woven fabric, mesh sheet, paper, and plastic film with liquid-permeable holes formed therein.

[0039] The fibers for forming the nonwoven or woven fabric of the top sheet material are preferably hydrophilic fibers or hydrophobic fibers whose surfaces have been made hydrophilic by surface treatment with a surfactant.

[0040] Examples of materials for forming the fibers of the nonwoven or woven topsheet material include polyolefin, polyester, nylon, cellulose, rayon, and cotton. Examples of polyolefin include polypropylene and polyethylene. Examples of polyester include polyethylene terephthalate and polybutylene terephthalate.

[0041] FIG. 14 shows an example of wearing the stain-preventing sheet (type A) of the present invention. The stain-preventing sheet (Type A) of the present invention prevents body soiling caused by feces of a diaper wearer by pressing the adhesive layer against and covering the genitals, particularly the female genitals, and the surrounding area. Its configuration and method of use are simpler than those of the stain-preventing sheets Types B and C of the present invention. It has the distinct feature of not covering the anus or the surrounding intergluteal cleft of the diaper wearer.

[0042] 15, 16 and 17 show examples of wearing the stain-preventing sheet (Type B or Type C) of the present invention. The sheet is used by pressing and attaching the adhesive layer to the genitals, anus and surrounding areas so that the urination opening and defecation opening are in contact with the genitals and anus, respectively.

[0043] The stain-preventing sheets of types B and C of the present invention have either a urination hole or a defecation hole, or both, so that the wearer can urinate and defecate inside the diaper. Urine excreted from the wearer's body is absorbed by the diaper's water absorption system, and excreted feces are contained and retained in the inner space of the diaper. In such cases, by pressing and adhering the adhesive layer to and covering the genitals, such as the genitals and surrounding area, and the anus and surrounding intergluteal cleft, fecal soiling of the genitals and intergluteal cleft can be prevented or reduced.

[0044] FIG. 13 shows specific examples of linear incisions, perforations, and a combination of both when forming a urination hole and a defecation hole. The linear cuts may be cross-shaped, X-shaped, or a combination of these with multiple diagonal or transverse lines. The shape of the apertures may be circular, elliptical or polygonal.

[0045] In the case of linear incisions, X-shape, radial linear incisions based on X-shape, cross-shape, or multiple cross-shape linear incisions based on X-shape are used. Among these, X-shape, which does not have vertical incisions, is particularly preferable in order to reduce the spread of bowel movements to the buttocks, genitals, and surrounding areas.

[0046] In the case of linear incisions, if a sharp or right-angled tip occurs at the center of the incision, causing pain to the skin or mucous membranes of the diaper wearer, this can be improved by cutting and removing such tip so that it becomes circular or polygonal. That is, in this case, the linear cuts and the perforations are combined, which can improve the user's comfort and make defecation easier.

[0047] The size of the defecation hole should be determined taking into account the maximum diameter of an adult's stool (approximately 35 mm). The same applies when considering the defecation hole as an opening. If the base material is stretchable, it may be smaller than the maximum diameter of the adult stool. It is desirable that the diameter be as small as possible to reduce the spread of stool to the anus and its surroundings. Specifically, it is preferable that the diameter of the opening is approximately 30 mm or less.

[0048] If an opening is provided in the center of the defecation hole, the area around the wearer's anus will become slightly soiled with feces when the anti-fouling sheet is replaced. This necessitates measures such as wiping off the soiled area or washing it with hot water. However, similar measures are required even when no such opening is provided, so this is not a major inconvenience. Furthermore, since the wearer's body becomes significantly soiled with feces when the anti-fouling sheet is not worn compared to when it is worn, the work of wiping off and washing with hot water is greatly reduced. As a result, hygiene management becomes easier.

[0049] The main role of the defecation hole is to guide feces into the diaper when the wearer defecates, but it also has the important function of preventing feces that have already been released onto the outer surface of the stain-prevention sheet from returning, thereby preventing the wearer's genitals and buttocks from becoming soiled with feces and providing hygienic protection.

[0050] For this purpose, an adhesive layer is provided on the inner surface of the defecation hole, and by attaching the defecation hole so that it abuts against the anus with this adhesive layer, the defecation hole can follow the movement of the anus during defecation, opening when defecation occurs, and returning to its original closed state following the movement of the anus once defecation is complete.

[0051] The size of the urination hole may be smaller than the minimum opening diameter of the defecation hole, and there are no particular restrictions on size or shape as long as urine can smoothly move from the inner surface of the stain-preventing sheet to the inside of the diaper on the outer surface. Also, the urination hole may be installed in one place or multiple holes may be installed in different separate places.

[0052] In the stain-preventing sheet type B or type C of the present invention, the urination hole (5) can be used as a hole for inserting a urination tube (8) or a urination catheter, if necessary.

[0053] When the urination hole (5) is a linear cut, it is advisable to push the urination tube (8) and other parts from the inner surface where the adhesive layer (2) of the stain-preventing sheet is located to the outer surface as shown in Figure 20, so that the part of the urination tube (8) that comes into contact with the body is not contaminated with adhesive or the like.

[0054] In addition, when the urination hole (5) is an opening, the diameter of the opening can be adjusted to the diameter of the urination tube (8) or the like, as shown in FIG.

[0055] In the stain-preventing sheet type B or type C of the present invention, a feces receiving bag (9) can be attached to the defecation hole as needed.

[0056] Materials that can be used to construct the feces collection bag (9) include, but are not limited to, paper, natural and synthetic fibers or their water-repellent finishes, plastics, biodegradable plastics, and elastomers. Elastomer films, which have excellent elasticity, are particularly suitable for comfort to the wearer and to reduce discomfort during use. Such elastomer films can be made from natural or synthetic rubber in the form of a sheet or film, and rubbers such as natural rubber latex, water-based or solvent-based polyurethane, or polyisoprene, which have excellent elasticity, tensile strength, and safety, are particularly suitable.

[0057] Possible methods for attaching the feces collection bag (9) include separately preparing a bag body having a feces collection bag fixing piece (9a) as shown in Figure 19, pushing the bag portion from the inner surface of the stain-prevention sheet to the outer surface, and finally adhesively fixing the feces collection bag fixing piece (9a) to the adhesive layer around the opening of the defecation hole (6), or adhesively fixing the feces collection bag (9) to the base material (1) as shown in Figure 21, or using a product in which the feces collection bag (9) and base material (1) are molded as one unit.

[0058] As described above, the stain-preventing sheet of the present invention hygienically protects the wearer's private parts, such as the genitals, and helps prevent infectious diseases caused by fecal soiling. It also simplifies the work of wiping off fecal soiling and washing with hot water when changing a diaper, thereby reducing the number of procedures required for diaper changing. [Explanation of symbols]

[0059] sign A. Stain prevention sheet B. Stain-preventing sheet with urination and defecation holes C. Stain-proof sheet with urination and defecation holes and top sheet 1 Base material 2 Adhesive layer 3 Release paper 4 Pickup section 5 Urinary hole 6 Defecation hole 7 Topsheet 8 Urinary tube 9 Stool Bag 9a bag fixing piece 10 anus h, i, j, m, n Linear cut k, l Combination of linear cuts and holes o Open hole DD shows the cross-sectional arrow direction of Figure 1. EE shows the cross-sectional arrow direction of Figure 5. FF shows the cross-sectional arrow direction of Figure 9. α-α indicates the cross-sectional arrow direction of FIG. β-β shows the cross-sectional arrow direction of FIG.

Claims

1. A stain-preventing sheet that prevents fecal soiling of the body of a diaper wearer, characterized in that it comprises a substrate having an inner surface facing the body and an outer surface opposite the inner surface, an adhesive layer laminated to all or part of the inner surface of the substrate, a non-adhesive pick-up portion formed around the adhesive layer or at least part of the periphery of the substrate, and a release paper covering the adhesive layer on the inner surface.

2. 2. The stain-preventing sheet according to claim 1, further comprising a urination hole or a defecation hole formed so as to penetrate the substrate and the adhesive layer from the inner surface to the outer surface.

3. 3. The stain-preventing sheet according to claim 2, wherein the urination or defecation hole is formed by a linear cut, an aperture, or a combination of a linear cut and an aperture.

4. 4. The stain-preventing sheet according to claim 1, 2 or 3, wherein the substrate is a nonwoven fabric, a woven fabric, a knitted fabric, paper, a water-impermeable film or an elastomer film.

5. 4. The stain-preventing sheet according to claim 2, wherein the urine outlet hole is capable of receiving a urinary duct.

6. 4. The stain-preventing sheet according to claim 2, further comprising a feces-receiving bag on the outer surface of the defecation hole.

7. 4. The stain-preventing sheet according to claim 1, wherein a top sheet is further laminated on a part of the inner surface.

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