JP2003265362A - Disposable toilet seat sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable toilet seat sheet which is coated with a tacky adhesive on a surface coming into contact with a toilet seat to prevent slip-off from the toilet seat, can be easily provided for a user, is easily removable out in use, prevents the tacky adhesive from oozing out without allowing the tacky adhesive or part of the sheet stuck thereto from remaining on the toilet seat and is soluble in water. <P>SOLUTION: The disposable toilet seat sheet comprises providing the rear surface of a water-soluble blank sheet 2 having an annular or non-annular shape in a developed state with a non-transfer stickable tacky adhesive layer 3 and further laminating and superposing a release band tape 4 on the tacky adhesive layer, then mating their rear surfaces one another and superposing such sheet and tape on each other. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION

[0002]

2. Description of the Related Art In recent years, Western toilets have become popular in public facilities and ordinary households. The feature of these Western-style toilets is that they are used by sitting on the toilet seat, but since the unspecified number of people use the toilet seat, the user is conscious of not wanting to touch the toilet seat directly. In addition, in cold climates, the toilet seat itself becomes cold, greatly impairing the comfort of the user. For this reason, sheets such as thin paper are laid as a countermeasure. Most of these sheets are almost disposable and can be poured directly into the water after use, so that they are simple and hygienic, and are therefore often used in hotels and public facilities. Some of these are designed to eliminate the inconvenience of the seat slipping off the toilet seat. (Japanese Utility Model Publication No. 7-2099). However, in practical use, the part to which the adhesive is applied and the adhesive remain on the toilet seat or the toilet bowl to increase the feeling of filth, and when the sheets are stacked and stored, it is difficult to take out one sheet at the time of use, and it can be folded compactly. Not suitable for specifications. There is also a phenomenon that the pressure sensitive adhesive exudes from the sheet and adheres to the user's skin. On the material side, the sheet attached to the toilet seat will not break and the adhesive will not ooze out, so increasing the thickness of the sheet itself will reduce the water decomposability function and cause problems after use. Exists as.

[0003]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a disposable toilet seat sheet provided with an adhesive on the surface in contact with the toilet seat in order to prevent the toilet seat from falling off, which can be easily provided to the user. Sheets do not stick to each other during storage before use, and when using, the required number of sheets can be easily removed, and after use, the adhesive or a part of the sheet attached to this can be the top of the toilet seat. The purpose of the present invention is to provide a toilet seat sheet that does not remain on the surface, does not exude the adhesive, and is highly water-degradable.

[0004]

Means for Solving the Problems As a result of intensive research to solve the above problems, the present invention provides a non-transferable pressure-sensitive adhesive layer on the back surface of a water-decomposable material sheet, and combines the back surfaces of the sheets together. By polymerizing, it is possible to prevent contact with other water-degradable material sheets for storage or carrying, and to polymerize the water-degradable material by polymerizing the release strip tape on the non-transferable adhesive layer provided on the opposite back surface. When it is deployed, it can be fully opened smoothly by the protection of the adhesive surface of the non-transferable adhesive material layer. In addition, as a water-decomposable material sheet, when a thin sheet having good water-decomposability is used, a device for increasing the strength of the water-decomposable material sheet, a non-transferable adhesive layer that prevents the adhesive from seeping out of the adhesive layer The present invention has been completed by taking into consideration the above-mentioned idea, the idea of the non-transferable adhesive material layer, and the idea of storing in a roll form. That is, the present invention provides (1) a non-transferable pressure-sensitive adhesive layer is provided on the back surface of a water-decomposable material sheet having an annular or non-annular shape in a developed state,
A disposable toilet seat sheet, characterized in that a release strip tape is polymerized on the non-transferable adhesive layer. (2) The disposable toilet seat sheet according to claim 1, wherein the water-decomposable material sheet contains rayon and paper fibers as main components, and the rayon content is 50% or more. (3) The disposable toilet seat sheet according to claim 1, wherein the water-decomposable material sheet is a non-woven fabric. (4) The disposable toilet seat sheet according to claim 1, wherein the non-transferable adhesive material layer is a double-sided tape. (5) The disposable toilet seat sheet according to claim 4, wherein the double-sided tape has a water-decomposable or water-soluble nonwoven fabric as a base material. (6) The disposable toilet seat sheet according to claim 4, wherein the double-sided tape has a water-soluble polymer film as a base material. (7) The disposable toilet seat sheet according to claim 1, wherein the release strip tape comprises a water-decomposable or water-soluble film as a base material. (8) The disposable toilet seat sheet according to claim 1, wherein the release strip tape comprises a water-decomposable or water-soluble nonwoven fabric as a base material. (9) The disposable toilet seat sheet according to claim 1, wherein the release strip tape is made of water-degradable or water-soluble paper as a base material. (10) The disposable toilet seat sheet according to claim 1, wherein the release strip tape is provided with a release layer on at least one surface. (11) A long water-decomposable material sheet, wherein a non-transferable pressure-sensitive adhesive layer is provided on one surface of the water-decomposable material sheet continuously or discontinuously in the longitudinal direction. A disposable toilet seat sheet, characterized in that a release band tape is polymerized on a material layer, and a perforation for cutting is provided at regular intervals to form a roll. (12) A roll-wound pair of long water-decomposable sheets polymerized inside a non-transferable pressure-sensitive adhesive layer,
The disposable toilet seat sheet according to claim 11, further comprising a release strip tape polymerized on the non-transferable adhesive material layer. (13) The disposable toilet seat sheet according to claim 11 or 12, wherein the water-decomposable material sheet mainly contains rayon and paper fibers, and the rayon content is 50% or more. (14) The water-decomposable material sheet is a non-woven fabric.
Alternatively, the disposable toilet seat sheet according to claim 12. (15) The non-transferable adhesive material layer is a double-sided tape.
The disposable toilet seat sheet according to claim 1 or claim 12. (16) The disposable toilet seat sheet according to claim 11 or 12, wherein the double-sided tape has a water-decomposable or water-soluble nonwoven fabric as a base material. (17) The disposable toilet seat sheet according to claim 11 or 12, wherein the double-sided tape comprises a water-soluble polymer film as a base material. (18) The disposable toilet seat sheet according to claim 11 or 12, wherein the release strip tape comprises a water-decomposable or water-soluble film as a base material. (19) The disposable toilet seat sheet according to claim 11 or 12, wherein the release strip tape comprises a water-decomposable or water-soluble nonwoven fabric as a base material. (20) The disposable toilet seat sheet according to claim 11 or 12, wherein the release strip tape comprises water-decomposable or water-soluble paper as a base material. (21) The disposable toilet seat sheet according to claim 11 or 12, wherein the release strip tape is provided with a release layer on at least one surface.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The water-decomposable material sheet used in the present invention is used in an expanded or annular shape in an annular or non-annular shape. The ring here refers to a sheet in which, for example, a rectangular, circular, or oval sheet is punched and processed along the shape of the intended toilet seat. Includes a notch, leaving a portion along the inner circumference of the toilet seat, so that a hole for it can be easily formed. Non-annular means that the seat has a horseshoe shape, a strip shape, or an arc shape with a "U" shape, a "U" shape, and a substantially U shape along the width of the toilet seat so as to cover a part or all of the shape of the toilet seat. What is cut and punched is used, and an appropriate one can be selected and used according to the purpose of use. At that time, perforations can be placed at appropriate positions so that a sheet piece having a required size or shape can be obtained. The toilet seat sheet of the present invention is configured by providing a non-transferable adhesive material layer on the back surface of the water-decomposable sheet. The shape of the non-transferable pressure-sensitive adhesive layer is not particularly limited, and the non-transferable pressure-sensitive adhesive layer may be provided in, for example, a linear curved line shape or an island shape having a sea-island pattern. INDUSTRIAL APPLICABILITY The present invention may be obtained by half-fold polymerizing one water-decomposable sheet or by polymerizing two water-decomposable material sheets, and a non-transferable pressure-sensitive adhesive layer provided on the opposite back surface is provided. For protection, the release strip tape is laminated and polymerized on the non-transferable adhesive layer, and the release strip tape has an effect that the non-transferable adhesive layer is not exposed when the sheet is in a polymerized state. Since the sheets do not adhere to each other due to the adhesive layer, they can be fully opened smoothly even when in use. INDUSTRIAL APPLICABILITY The toilet seat sheet of the present invention can be smoothly taken out one by one because the non-transferable adhesive material layer does not adhere to other sheets even when stored for mobile use, and the sheet in a polymerized state is opened at the time of use, and the release strip is The tape can be turned off and attached to the toilet seat smoothly.

The term "water-decomposable" as used in the present invention means that, when the sheet is put into water, the sheet disperses in water in a fibrous state or dissolves. The material of the water-decomposable material sheet of the present invention can be used without particular limitation as long as it has good water-decomposition performance and is easy to flow in a flush toilet. Especially thickness 10
A material sheet made of a viscose rayon fiber having a size of ˜100 μm or a mixture with a paper fiber containing 50% or more thereof can be preferably used. The viscose rayon fiber has the function of increasing the tear strength of the water-decomposable material sheet. The lower the content of viscose rayon fiber, the weaker the tear strength. In order to compensate for this, it is necessary to increase the thickness, and the water decomposability decreases. In order not to block the flow paths of flush toilets, water pipes, septic tanks, etc.,
The "easiness of loosening" specified in JIS P4501 is 10
It is desirable to select one within 0S, preferably 40 to 70S. If this value is too low, the tear strength will be too low to withstand use, and if it is too high, the water decomposability will be insufficient. If necessary, a material mixed with components such as a biodegradable resin can also be used. The pressure-sensitive adhesive used in the non-transferable pressure-sensitive adhesive layer used in the present invention can be used without particular limitation as long as it exhibits pressure-sensitive adhesiveness and can be fixed to the toilet seat. For example, acrylic or rubber adhesives can be used for this purpose. The non-transferable pressure-sensitive adhesive layer of the present invention is contained in the toilet seat sheet in a very small ratio as compared with the water-decomposable material sheet. Therefore, the non-transferable pressure-sensitive adhesive layer is not necessarily water-decomposable, but the toilet seat sheet of the present invention can be suitably used without blocking the flush toilet if the water-decomposable material sheet has water-decomposability. . However, it is further desirable that the non-transferable pressure-sensitive adhesive layer also be water-degradable (water-soluble). The non-transferable pressure-sensitive adhesive layer is particularly effective when the water-decomposable material sheet is thick and the water-decomposability is low.

The non-transferable water-decomposable pressure-sensitive adhesive used in the present invention is, for example, a water-soluble polymer such as polyvinyl alcohol, polyacrylamide, polyvinyl methyl ether, polyacrylic acid, or a water-soluble two or more of these. Water-soluble acrylic acid, 2-methoxyethyl acrylate, vinylpyrrolidone and other hydrophilic monomers are copolymerized with acrylic monomers such as 2-ethylhexyl acrylate, and polyalkylene glycol, etc. A composition obtained by adding a known general pressure-sensitive adhesive to the plasticizers and the water-degradable pressure-sensitive adhesives within a range that does not impair the water-degradability can be used.
Since the pressure-sensitive adhesive layer is rapidly hydrolyzed when it is poured into water together with the toilet seat sheet, it is desirable that the pressure-sensitive adhesive has a high solubility in water, and the solubility at room temperature is 0.01 g.
/ Ml or more is preferable. In addition, the pressure-sensitive adhesive is preferably a weak pressure-sensitive adhesive in consideration of the ease of removing it from the toilet seat after use. As an index of this adhesive strength, J. DOW-type ball tack test (20 ° C x 65% RH tilt angle 30
The maximum ball No. at a running distance of 100 mm). Is 1
A sheet having a value of 10 is desirable, and in combination with adding weight during use, the sheet can be sufficiently fixed to the toilet seat even with such weak tackiness. Further, as the non-transferable pressure-sensitive adhesive layer, a double-sided tape coated with a pressure-sensitive adhesive can be used instead of simply coating the pressure-sensitive adhesive. In this case, even if a thin sheet that is not water-decomposable is used as the base material of the double-sided adhesive tape, since the content in the toilet seat sheet is low, it can be used with almost no effect on the water-decomposability of the entire toilet seat sheet. . However, when a sheet having a large thickness and low water-decomposability is used as the water-decomposable material sheet, it is preferable that the non-transferable pressure-sensitive adhesive layer is also a non-transferable water-decomposable pressure-sensitive adhesive layer.

For example, a tape or non-woven fabric obtained by cutting a water-decomposable sheet, particularly a non-woven fabric composed of water-soluble fibers, or a water-decomposable paper tape or a water-soluble polymer film is coated with a pressure-sensitive adhesive, particularly a water-soluble pressure-sensitive adhesive layer drug, and the tape is formed. The pressure-sensitive adhesive tape having the pressure-sensitive adhesive on both sides can be attached to the water-decomposable sheet to form the non-transferable water-decomposable pressure-sensitive adhesive layer on the back surface of the water-decomposable material sheet. One side of the adhesive tape strongly adheres to the water-decomposable sheet, and the adhesive sheet present on the other side of the adhesive tape allows the toilet seat sheet to be lightly adhered to the toilet seat. By using such an adhesive, the step of applying the adhesive layer and the release strip tape to the toilet seat sheet of the present invention can be simplified. If necessary, different types of adhesives may be used for the adhesive applied to one surface of the adhesive tape and the adhesive applied to the other surface. In this way, by making the tape containing the adhesive water-soluble or water-soluble, the adhesive tape does not dissolve in water or remain undissolved when the toilet seat sheet is put into water. As a preferred embodiment of the non-transferable pressure-sensitive adhesive layer of the present invention, a water-decomposable nonwoven fabric can be used as the base material of the double-sided tape. For example, a water-soluble film made of fibers such as polyvinyl alcohol, polyvinyl ether, polyvinylpyrrolidone, and polyacrylamide can also be used as the substrate. If necessary, an antibacterial agent, a fragrance, a coloring agent or the like can be added to the water-decomposable material sheet, pressure-sensitive adhesive or double-sided pressure-sensitive adhesive tape of the present invention.

As the base material of the release strip tape of the present invention used in the present invention, a film-like or non-woven material having water-decomposability and water-solubility is desirable. For example, water-soluble polymers such as polyvinyl alcohol, polyacrylamide, polyvinyl methyl ether, and polyacrylic acid, or those to which two or more kinds of water-soluble polymers are added, water-soluble acrylic acid, 2-methoxyethyl acrylate, Hydrophilic monomers such as vinylpyrrolidone,
It is also possible to use a composition (film-like or non-woven fabric-like) obtained by copolymerizing an acrylic monomer such as 2-ethylhexyl acrylate and adding a known general plasticizer to a water-decomposable substance such as polyalkylene glycol. . It can also be used as a natural pulp-based base material of the same quality as toilet paper. Further, with respect to the base material of the tape, embossing the surface that directly contacts the non-transferable pressure-sensitive adhesive layer has the effect of promoting releasability.

The release strip tape of the present invention used in the present invention can be provided with a release layer on at least one surface. For the release layer, silicone release agents, release inks and the like are generally known, but are not particularly limited.

Embodiments of the present invention will be described in more detail with reference to the drawings. 1 and 2 show an embodiment of the present invention, and are a plan view and a cross-sectional view of the water-decomposable material sheet 2 superposed with their back surfaces aligned at the position of the b line. In FIG. 1, the water-decomposable material sheet 2 is cut into an arc shape, a non-transferable adhesive material layer 3 is provided in a strip shape at an arbitrary position on the back surface, and a release strip tape 4 is laminated and polymerized. . FIG. 2 shows a mode in which the non-transferable adhesive material layer 3 is provided in a circular shape at an arbitrary position on the back surface. The release strip tape may be provided at a set position of the non-transferable adhesive material layer, but in the case of a positional relationship in which the non-transferable adhesive material layers overlap each other,
It can also be protected with a single strip of tape. FIGS. 3 and 4 show an embodiment of the present invention, and are a plan view and a cross-sectional view of the water-decomposable material sheet 2 superposed with their back surfaces aligned at the a line position. In FIG. 3, the water-decomposable material sheet 2 is cut into an annular shape, the non-transferable adhesive material layer 3 is provided in a band shape at an arbitrary position on the back surface, and the release band tape 4 is laminated and polymerized. FIG. 4 shows a mode in which the non-transferable adhesive material layer 3 is provided in a circular shape at an arbitrary position on the back surface. Also in these FIGS. 3 and 4, the release strip tape may be provided at a set position of the non-transferable adhesive material layer, or when the non-transferable adhesive material layers overlap each other,
It can also be protected with a single strip of tape. 5 and 6 show an embodiment in which the seat having the shape shown in FIGS. 1 and 2 is attached to the toilet seat. The seat cut in a non-annular shape makes it easy to arbitrarily adjust the mounting position to the front, back, left and right. Also, although not shown in the figure, as a device for the shape of the seat,
Since it can be cut into a strip shape, a "U" shape, or a "U" shape, the area and shape of the toilet seat can be freely set. In addition, by opening a hanging hole in a part of the sheet, a large number of sheets can be collectively hung and stored while being hung. Further, by providing a gripping room at the end of the sheet, the sheet can be easily peeled off after use. 7 and 8 show an embodiment in which the seat having the shape shown in FIGS. 3 and 4 is mounted on the toilet seat. The sheet cut into a ring shape can be taken out and discarded easily because the mounting work time is short. FIG. 9 shows an example in which the release band tape 4 is turned over from the non-transferable adhesive material layer 3. Although the peeling tape can be expected to have a peeling effect on the tape itself, a peeling layer can be provided on the surface in contact with the non-transferable pressure-sensitive adhesive layer for smoother peeling. The release layer is a commonly known release agent such as a silicone release agent and a release ink, and the effect can be expected sufficiently. FIG. 10 shows a long sheet 2 of water-degradable material.
A sheet in which the non-transferable adhesive material layer 3 is continuously provided in the longitudinal direction on one side of the sheet, and the release band tape 4 is laminated and polymerized, and the perforations m for cutting are provided at regular intervals. An example will be shown in which is formed into a roll. A is a front view,
It is an A'sectional view. Further, FIG. 11 shows a pair of long water-decomposable material sheets 2 in which a non-transferable adhesive material layer 3 is polymerized inside, and a release strip tape 4 is laminated and polymerized and cut at regular intervals. An embodiment is shown in which a perforation m is provided and is formed into a roll. B'is a front view, and B "is a cross-sectional view. Fig. 12 shows an embodiment in which one side of the long water-decomposable material sheet 2 is discontinuously provided in the lateral direction. , C ′ are cross-sectional views, which are not shown in the drawing, but the non-transferable adhesive material layer 3 can be provided in a slanted line shape, a curved line shape, and various graphic shapes with respect to the longitudinal direction. In Fig. 13, for example, two sheets can be torn off from the perforation m and laid one on each side of the toilet seat for use. In this embodiment, the adhesive layer 3 is provided discontinuously in the lateral direction, and the release strip tape 4 is laminated and polymerized.
D'and D "are cross-sectional views. Although not shown in the figure, the non-transferable adhesive material layer 3 is arranged in a direction perpendicular to the longitudinal direction, but is not limited to this. A pair of toilet seats can be cut at a time along the perforation m, which is convenient for use.

[0012]

The disposable sheet of the present invention serves as a base material mainly composed of rayon having high tear strength, and a non-transferable water-decomposable pressure-sensitive adhesive layer is provided on the inner side when the sheet is polymerized or half-folded. At least one side of the non-transferable pressure-sensitive adhesive layer is protected by laminating a release strip tape provided with a release layer, and the required number of sheets can be easily taken out at the time of use. By making the non-transferable adhesive material layer a double-sided tape, it is possible to prevent the adhesive from seeping out. Further, since the sheet, the adhesive, and the release strip tape can be made of water-decomposable or water-soluble materials, they can be discarded under running water without any problem.

[Brief description of drawings]

FIG. 1 is a front view and a cross-sectional view of a mode before using the disposable toilet seat sheet of the present invention. (It is half-folded, cut into a non-circular shape, and the non-transferable adhesive material layer is in a band shape.)

FIG. 2 is a front view and a sectional view of a mode before using the disposable toilet seat sheet of the present invention. (It is half-folded, cut into a non-circular shape, and the non-transferable adhesive layer is circular.)

FIG. 3 is a front view and a cross-sectional view of a mode before using the disposable toilet seat sheet of the present invention. (It is half-folded and cut into a ring, and the non-adhesive layer is in the form of a strip.)

FIG. 4 is a front view and a cross-sectional view of a mode before using the disposable toilet seat sheet of the present invention. (It is half-folded and cut in an annular shape, and the non-adhesive layer is circular.)

FIG. 5 is a front view of a mode in which the disposable toilet seat sheet of the present invention is attached to the toilet seat. (It is half-folded, cut into a non-circular shape, and the non-transferable adhesive material layer is in a band shape.)

FIG. 6 is a front view of a mode in which the disposable toilet seat sheet of the present invention is attached to the toilet seat. (It is half-folded, cut into a non-circular shape, and the non-transferable adhesive layer is circular.)

FIG. 7 is a front view of a mode in which the disposable toilet seat sheet of the present invention is attached to the toilet seat. (It is half-folded and cut into an annular shape, and the non-transferable adhesive material layer is in a band shape.)

FIG. 8 is a front view of a mode in which the disposable toilet seat sheet of the present invention is attached to the toilet seat. (It is half-folded, cut in a ring, and the non-transferable adhesive layer is circular.)

FIG. 9 is a perspective view of the embodiment of the disposable toilet seat sheet of the present invention in which the release strip tape is peeled from the non-transferable adhesive material layer.

FIG. 10 is a front view and a cross-sectional view of an aspect of the present invention when the disposable toilet seat sheet has a long length specification.

FIG. 11 is a lengthy disposable toilet seat sheet of the present invention;
It is a front view and a sectional view of a mode at the time of one pair specification.

FIG. 12 is a front view and a cross-sectional view of an aspect of the disposable toilet seat sheet long specification of the present invention in a lateral direction of a non-transferable adhesive material layer.

FIG. 13 is a lengthy disposable toilet seat sheet of the present invention;
It is a front view and a sectional view of a mode at the time of one pair, non-transferable adhesive material layer lateral direction specification.

[Explanation of symbols]

1 toilet seat 2 Water-degradable material sheet 3 Non-transferable adhesive layer 4 peeling tape perforation

Claims (21)

[Claims] 1. A non-transferable pressure-sensitive adhesive layer is provided on the back surface of a water-decomposable material sheet having an annular or non-annular shape in a developed state, and a release strip tape is polymerized on the non-transferable pressure-sensitive adhesive layer. Disposable toilet seat sheet characterized by being 2. The disposable toilet seat sheet according to claim 1, wherein the water-decomposable material sheet mainly contains rayon and paper fibers, and the rayon content is 50% or more. 3. The disposable toilet seat sheet according to claim 1, wherein the water-decomposable material sheet is a non-woven fabric. 4. The disposable toilet seat sheet according to claim 1, wherein the non-transferable adhesive material layer is a double-sided tape. 5. The disposable toilet seat sheet according to claim 4, wherein the double-sided tape has a water-decomposable or water-soluble nonwoven fabric as a base material. 6. The disposable toilet seat sheet according to claim 4, wherein the double-sided tape has a water-soluble polymer film as a base material. 7. The disposable toilet seat sheet according to claim 1, wherein the release strip tape comprises a water-decomposable or water-soluble film as a base material. 8. The disposable toilet seat sheet according to claim 1, wherein the release strip tape comprises a water-decomposable or water-soluble nonwoven fabric as a base material. 9. The disposable toilet seat sheet according to claim 1, wherein the release strip tape is made of water-degradable or water-soluble paper as a base material. 10. The disposable toilet seat sheet according to claim 1, wherein the release strip tape is provided with a release layer on at least one surface. 11. A long sheet of water-decomposable material, wherein a non-transferable pressure-sensitive adhesive layer is provided on one surface of the water-decomposable material sheet continuously or discontinuously in the longitudinal direction. Disposable toilet seat sheet, characterized in that it is formed by polymerizing a release strip tape on a pressure-sensitive adhesive material layer and forming perforations for cutting at regular intervals in a roll. 12. A release band tape in which a pair of long water-decomposable sheets wound in a roll are polymerized inside a non-transferable pressure-sensitive adhesive layer, and the non-transferable pressure-sensitive adhesive layer is further peeled off. The disposable toilet seat sheet according to claim 11, wherein the sheet is polymerized. 13. The disposable toilet seat sheet according to claim 11 or 12, wherein the water-decomposable material sheet contains rayon and paper fibers as main components, and the rayon content is 50% or more. 14. The disposable toilet seat sheet according to claim 11, wherein the water-decomposable material sheet is a non-woven fabric. 15. The disposable toilet seat sheet according to claim 11 or 12, wherein the non-transferable adhesive material layer is a double-sided tape. 16. The disposable toilet seat sheet according to claim 11 or 12, wherein the double-sided tape has a water-decomposable or water-soluble nonwoven fabric as a base material. 17. The disposable toilet seat sheet according to claim 11 or 12, wherein the double-sided tape has a water-soluble polymer film as a base material. 18. The disposable toilet seat sheet according to claim 11 or 12, wherein the release strip tape comprises a water-decomposable or water-soluble film as a base material. 19. The disposable toilet seat sheet according to claim 11 or 12, wherein the release strip tape comprises a water-decomposable or water-soluble nonwoven fabric as a base material. . 20. The disposable toilet seat sheet according to claim 11, wherein the release strip tape is made of water-degradable or water-soluble paper as a base material. 21. The disposable toilet seat sheet according to claim 11 or 12, wherein the release strip tape is provided with a release layer on at least one surface.