JP2003304987A - Disposable toilet seat sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable well water-soluble toilet seat sheet, keeping the surface coming into contact with a toilet seat coated with an adhesive in order to prevent the disposable toilet seat sheet from slipping off from the toilet seat, which can be easily provided to a user and prevents the non-transferrable adhesive material layers on the sheets from adhering to each other even under a high temperature dry, or high humidity environmental state especially during storage prior to use, and the adhesive material layers from drying, losing the adhesion and separating from the toilet seat, facilitates the removal of a required number of sheets for use at the time of use, and prevents the adhesive or a part of the sheet adhered to the adhesive from remaining on the toilet seat after use, and the adhesive from oozing out. <P>SOLUTION: The rear surface of a water-soluble material sheet having an annular or a non-annular shape under a developed state is provided with the non-transferrable adhesive layer. The rear surfaces of the water-soluble material sheets are joined and superposed. In this case, the adhesive material layers provided on the rear surfaces being confronted with each other are provided at locations which do not directly come into contact with each other. At the locations corresponding to the adhesive material layers, the adhesive material layer having a release layer on the surface is provided for the disposable toilet seat sheet. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable toilet seat seat used in a toilet seat of a Western-style toilet.

[0002]

2. Description of the Related Art In recent years, with the widespread use of western-style toilets, toilet seats of western-style toilets have been widely used in hotels, hospitals, public facilities, homes and the like. These toilet seats are laid with thin paper sheets for the purpose of preventing them from directly touching the toilet seats used by other people or preventing the coldness of the toilet seats from being transmitted to the skin. . Such a toilet seat sheet is convenient and hygienic since it can be thrown away in water and then thrown away after use, and is commonly used in Western toilets of hotels and other public facilities that are used by many unspecified people. Among these, there is one in which an adhesive is applied to the contact surface with the toilet seat in order to prevent the seat from slipping off from the toilet seat (Actual Kaihei 7-2099).
No. 5). However, in practical use, the part of the sheet to which the adhesive is applied or the adhesive adheres to the toilet seat surface to increase the feeling of uncleanness, and when multiple sheets are polymerized and stored, the adhesive attaches each sheet and It was difficult to take out the sheet, and in some cases the sheet was broken.

In Japanese Utility Model Registration No. 3072468, a peeling portion is provided on the opposite side of the adhesive portion of each sheet in order to prevent the adhesion between the sheets, and a complicated device is used for mounting and holding a plurality of sheets. Proposed. However, when these are polymerized and stored, the adhesives stick to each other, which makes it difficult to take out the required one, and it is difficult to fold it compactly so that it can be carried easily. was there. Further, there is a disadvantage that the pressure sensitive adhesive exudes to the surface of the sheet and sticks to the user's skin. Also in terms of the material, there is a problem that if the thickness of the sheet is increased so that the attached sheet does not break and the adhesive does not exude, the water decomposability of the sheet decreases.

[0004]

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a disposable toilet seat sheet in which an adhesive is applied to the surface in contact with the toilet seat in order to prevent the toilet seat from coming off from the toilet seat. During storage before use, the non-transferable adhesive layers on the sheet do not stick to each other even under high-temperature drying or high-humidity environmental conditions, and the non-transferable adhesive layer is dry. The adhesive sheet does not come off from the toilet seat, and the necessary number of sheets can be easily removed before use, and the adhesive or part of the sheet attached to it does not remain on the toilet seat after use. Another object of the present invention is to provide a toilet seat sheet which does not exude and has good water decomposability.

[0005]

Means for Solving the Problems As a result of an ingenious research to solve the above-mentioned problems, the present inventor has found on the back surface of a sheet of a water-decomposable material that the surface of the sheet is spaced apart from the non-transferable adhesive layer. When a non-transferable pressure-sensitive adhesive layer having a release layer is provided and the back surfaces are put together and polymerized, adhesion with another water-decomposable sheet can be prevented during storage or carrying.

[0006] And, when the back surfaces are put together and polymerized,
When the water-decomposable material is developed, the non-transferable pressure-sensitive adhesive material is brought into face-to-face contact with the non-transferable pressure-sensitive adhesive material layer provided on the back surface and the non-transferable pressure-sensitive adhesive material layer having the release layer on the surface. Paying attention to the fact that the layer can be prevented from falling off, and when a thin sheet with good water disintegration is used as the water-decomposable material sheet, a device to increase the strength of the water-decomposable material sheet, from the adhesive layer The present invention has been completed by taking into consideration the non-transferable pressure-sensitive adhesive layer without resin bleeding, the non-transferable pressure-sensitive adhesive layer, and the roll storage method. That is, the present invention is: (1) A product obtained by providing a non-transferable pressure-sensitive adhesive layer on the back surface of a water-decomposable material sheet having an annular or non-annular shape in a developed state, and polymerizing the back surfaces together. The non-transferable adhesive material layer provided on the opposite back surface is provided at a position not in direct contact with each other, and the non-transferable adhesive layer having a release layer on the surface is provided at a position relative to the non-transferable adhesive material layer. 2. A disposable toilet seat sheet having an adhesive adhesive layer, and (2) a water-decomposable material sheet, which comprises rayon and paper fibers as main components, of which rayon content is 50% or more. The disposable toilet seat sheet according to claim 3, (3) the water-decomposable material sheet is a nonwoven fabric, and the disposable toilet seat sheet according to claim 1 (4) The non-transferable adhesive layer is a double-sided tape. Sheet, (5) double sided tape Disposable toilet seat according to claim 4 wherein the water-decomposable or water-soluble nonwoven fabric as a base material, (6) double-sided tape, disposable toilet seat according to claim 4, wherein a base material a water-soluble polymer film, (7)
The disposable toilet seat sheet according to claim 1, wherein the non-transferable pressure-sensitive adhesive layer having a release layer on the surface is a single-sided tape, and (8) the single-sided tape is based on a water-decomposable or water-soluble nonwoven fabric as a base material. Disposable disposable toilet seat sheet. (9) The single-sided tape has a water-soluble polymer film as a base material.
Disposable toilet seat sheet described in (10) Non-transferable adhesive having a non-transferable adhesive material layer and a release layer on the surface continuously or discontinuously in the longitudinal direction on one surface of a long water-decomposable material sheet A sheet provided with a material layer, wherein the disposable toilet seat sheet is characterized in that it is formed into a roll by providing perforations for cutting at regular intervals.
(11) A roll-wound pair of water-decomposable material sheets, which are polymerized with a non-transferable pressure-sensitive adhesive layer and a non-transferable pressure-sensitive adhesive layer that is a release layer on the surface being inside, The disposable toilet seat sheet according to claim 10, wherein the material layer is provided at a position where it directly contacts the non-transferable adhesive material layer having a release layer on the opposite surface.
(12) The disposable toilet seat sheet according to claim 10 or 11, wherein the water-decomposable material sheet contains rayon and paper fibers as main components, and the rayon content is 50% or more, and (13) the water-decomposable material sheet. Is a non-woven fabric, and the disposable toilet seat sheet according to claim 10 or 11,
4) The non-transferable pressure-sensitive adhesive layer is a double-sided tape.
Alternatively, the disposable toilet seat sheet according to claim 11, (15)
The double-sided tape has a water-decomposable non-woven fabric as a base material.
Disposable toilet seat sheet, (16) Double-sided tape,
The disposable toilet seat sheet according to claim 14, which uses a water-soluble polymer film as a base material, (17) The non-transferable adhesive material layer having a release layer on the surface is a single-sided film, and the disposable according to claim 10 or claim 11. Toilet seat, (18)
The one-sided film is based on a water-decomposable nonwoven fabric as a base material.
18. A disposable toilet seat sheet according to claim 17, wherein the single-sided film has a water-soluble polymer film as a base material.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The water-decomposable material sheet 2 used in the present invention is used in an annular or non-annular shape in a developed state. Here, the annular shape means a shape obtained by punching along the shape of the intended toilet seat 1, such as a rectangle, a circle, an ellipse, etc. Includes notches left along a portion of the inner circumference of the toilet seat so that the holes can be easily formed. Non-annular means that the seat is "U" -shaped, U-shaped, horseshoe-shaped, strip-shaped, or arc-shaped along the width of the toilet seat so as to cover a part or almost all of the shape of the toilet seat. What is cut and punched, and can be selected and used appropriately according to the purpose of use. Further, it may be supplied in a roll shape and cut into a required number of sheets before use so that it is easy to manufacture and use. At that time, perforations 7 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 has a non-transferable pressure-sensitive adhesive layer 3 on the back surface of the water-decomposable material sheet and a back surface of the water-decomposable material sheet, which is located at the facing position of the non-transferable pressure-sensitive adhesive layer. As described above, the non-transferable adhesive material layer 4 having a release layer on the surface is provided. The shapes of the non-transferable pressure-sensitive adhesive layer and the non-transferable pressure-sensitive adhesive layer having a release layer on the surface are not particularly limited, and for example, they can be provided in a linear or curved line shape or a sea-island-like island shape.

The present invention is directed to the case where one water-decomposable material sheet is half-fold polymerized or two water-decomposable material sheets are stacked with the non-transferable pressure-sensitive adhesive layer inside so that they are opposite to each other. Since the non-transferable pressure-sensitive adhesive layer provided above and the non-transferable pressure-sensitive adhesive material layer having a release layer on the surface are provided at positions where they are in surface contact with each other, the water-decomposable material sheets should adhere to each other. In addition, since the water-decomposable material sheet is polymerized so that it does not come into contact with each other when the polymerized state of the water-degradable material sheet is used, the non-transferable adhesive material layers firmly adhere to each other The material layer does not separate from the water-decomposable material sheet.

When the non-transferable pressure-sensitive adhesive layers are superposed and polymerized, when peeled off, the non-transferable pressure-sensitive adhesive layers on both sides are firmly adhered to each other and one of the non-transferable pressure-sensitive adhesive layers is adhered. Although the other non-transferable adhesive material layer migrates to the material layer and falls off, the toilet seat sheet of the present invention has the adhesive material layer that does not adhere to another toilet seat sheet when the toilet seat sheet is stored and carried. It is possible to smoothly take out the toilet seat sheets one by one, smoothly deploy them, and attach them to the toilet seat.

The term "water-decomposability" as used in the present invention means that when a sheet is placed in water, the sheet disperses in water in a fibrous state.
Or it means to dissolve. As the material of the water-decomposable material sheet of the present invention, any sheet can be used without particular limitation as long as it has good water-decomposability and is easy to flow in a flush toilet. In particular, a material sheet made of a mixture of viscose rayon fiber having a thickness of 10 to 100 μm or paper fiber containing 50% or more can be preferably used.

The viscose rayon fiber has the function of increasing the tear strength of the water-decomposable material sheet. When the content of the viscose rayon fiber becomes low, it is necessary to increase the thickness in order to compensate for the weakening of the tear strength.
Water degradability is reduced. In order not to obstruct the flow paths of flush toilets, water pipes, septic tanks, etc., JIS P 4501
It is desirable to select one having a "easiness of loosening" within 100 s, preferably 40 to 70 s, as defined in Section 2.
If this value is too low, the tear strength is too low to withstand use, and if it is too high, the water decomposability becomes 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 layers 3 and 4 used in the present invention is not particularly limited as long as it exhibits pressure-sensitive adhesiveness and can be fixed to the toilet seat. You can For example, acrylic and 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 water-decomposable 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 polymer of two or more of these. Copolymer with water-soluble acrylic acid, 2-methoxyethyl acrylate, polyvinylpyrrolidone, etc., and an acrylic monomer such as 2-ethylhexyl acrylate,
It is possible to use a composition in which a known general pressure-sensitive adhesive is added to a plasticizer such as polyalkylene glycol and a water-degradable pressure-sensitive adhesive thereof in a range that does not impair the water-degradability. When the adhesive is flushed with the toilet seat sheet,
Since the pressure-sensitive adhesive layer is rapidly hydrolyzed, it is desirable that it has a high solubility in water, and the solubility at room temperature is 0.
It is preferably 01 g / ml or more.

Further, the pressure-sensitive adhesive of the non-transferable pressure-sensitive adhesive layer of the toilet seat sheet of the present invention has an adhesive force to the toilet seat sheet material in consideration of the ease of removing it from the toilet seat after use, and A non-transferable material for the upper surface of the toilet seat can be used without particular limitation. Here, non-transferability means that no adhesive remains on the toilet seat when the toilet seat sheet is removed from the toilet seat after use.

Further, the adhesive is preferably weakly adhesive in consideration of the convenience 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 degrees, running distance 10
It is desirable that the maximum ball No. has a value of 1 to 10 at 0 mm), and in combination with the addition of weight during use, the seat can be sufficiently fixed to the toilet seat even with such weak tackiness. Further, as the non-transferable pressure-sensitive adhesive layer, instead of simply coating the pressure-sensitive adhesive, a double-sided or single-sided pressure-sensitive adhesive tape coated with the pressure-sensitive adhesive can be used. In this case, even if a thin sheet that is not water-decomposable is used as the base material for the double-sided or single-sided adhesive tape, the content in the toilet seat sheet is low, so use it without affecting the water-decomposability of the entire toilet seat sheet. Comes out. 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 a non-woven fabric obtained by cutting a water-decomposable sheet, particularly a non-woven fabric composed of water-soluble fibers, or a water-degradable paper tape or a water-soluble polymer film as an adhesive,
In particular, a water-soluble adhesive is applied, and an adhesive tape having an adhesive on both sides or one side of the tape is attached to a water-decomposable sheet to form a non-transferable water-decomposable adhesive layer on the back surface of the water-decomposable material sheet. Can be formed. One side of the adhesive tape strongly adheres to the water-degradable sheet, and the toilet seat sheet can be lightly adhered to the toilet seat with the adhesive present on the other side of the adhesive tape.

The use of such an adhesive tape not only simplifies the step of applying an adhesive material layer to the toilet seat sheet of the present invention, but also makes it possible to apply the adhesive material directly to the water-decomposable material sheet on the opposite side of the sheet. It is possible to effectively prevent the pressure sensitive adhesive from seeping out to the surface. The prevention of sticking to the user's skin and the prevention of sticking between the sheets when the sheets are polymerized can be achieved at the same time. If necessary, different kinds 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, when the toilet seat sheet is put into water by making the tape containing the adhesive water-soluble or water-soluble, the adhesive tape is not insoluble in water or does not remain without being water-decomposed. .

As a preferred embodiment of the non-transferable pressure-sensitive adhesive layer of the present invention, a water-decomposable non-woven fabric can be used as the base material of the double-sided or single-sided tape. For example, a water-soluble nonwoven fabric made of fibers such as polyvinyl alcohol, polyvinyl ether, polyvinylpyrrolidone, and polyacrylamide can be preferably used. Water-soluble films made of these materials can also be used as the substrate. If necessary, an antibacterial agent, a fragrance, a coloring agent, etc. can be added to the water-decomposable material sheet, pressure-sensitive adhesive, double-sided or single-sided pressure-sensitive adhesive tape of the present invention.

Embodiments of the present invention will be described in more detail with reference to the drawings. 1 to 4 are plan views of some examples showing a state in which a non-adhesive water-decomposable sheet showing an embodiment of the present invention is attached to a toilet seat. 1 is a toilet seat, 2 is a disposable toilet seat sheet made of the water-decomposable material sheet of the present invention, 3 is a non-transferable adhesive layer, and 4 is a non-transferable adhesive layer having a release layer on the surface. FIG. 1 shows an annular toilet seat sheet, and FIGS. 2, 3, and 4 show examples of non-annular toilet seat sheets. FIG. 3 shows an example of a shape in which the left and right sides of the toilet seat are connected, and when the back surface is turned inward along the a-a axis and is turned back, the opposite surfaces 3 and. It is provided at a position where 4 and 4 overlap. In Fig. 2, a pair of left and right sheets are used, and when the surfaces of 3 and 4 are stacked inside, or
As shown in FIG. 5, when facing halfway along the b-b axis, they face each other 3
And 4 are provided at overlapping positions.

FIG. 4 shows an example in which 3 and 4 are provided on the inner sides of the opposite surfaces of a pair of strip-shaped sheets and these are expanded and used.

FIG. 6 shows the water-decomposable material sheet 2 of FIG.
This is an example of half-folding along the b-axis, making a hole 6 at a portion close to one end thereof, and suspending the hole 6 in a suspending tool f provided on a wall of a toilet or the like for use. The holes 6 may be provided with perforations 7 so that they can be easily torn off during use.

Alternatively, as shown in FIG. 7, a projection 5 may be provided at one end of the water-decomposable material sheet 2 and a hole 6 may be formed in this. Further, FIG. 8 is an example in which the water-decomposable material sheet 2 of FIG. 5 is folded in half along the b-b axis, polymerized and packed in a box to facilitate portability. The above merely shows some examples of the mode of use of the present invention and is in no way limiting.

In FIG. 9, a non-transferable adhesive material layer 3 is vertically continuous on one surface of a water-decomposable material sheet 2, and a non-transferable adhesive material layer 4 having release paper on the front surface is vertically provided on the back surface. A front view of an example of a disposable toilet seat sheet, characterized in that it is a sheet continuously provided in a predetermined direction and is provided with cutting perforations 7 at regular intervals and is formed into a roll. FIG. 9-A is a cross-sectional view thereof.

FIG. 10 shows an example in which the non-transferable adhesive material layer 3 and the non-transferable adhesive material layer 4 having a release paper on the back surface are discontinuously provided in the lateral direction. 10-A is the front view and 10-B is the side view. In this example, the non-transferable adhesive material layers 3 and 4 are provided at right angles to the lateral direction, but diagonal lines, curved lines, and various figures can be used. For example, two pieces are torn from the perforations 6 and laid one on each side of the toilet seat for use.

[0027]

INDUSTRIAL APPLICABILITY The disposable sheet of the present invention has a non-transferable pressure-sensitive adhesive layer having a release layer on the surface opposite to the non-transferable pressure-sensitive adhesive layer when polymerized or half-folded. Even if the humidity is high or it is in a dry state, the sheets do not stick to each other or lose the adhesiveness during storage before use, and the
The number required for use can be easily removed.

By using rayon as the main component of the water-decomposable material sheet, a disposable toilet seat sheet having good water-decomposability and high tear strength can be obtained.

By using a double-sided tape or a single-sided tape as the non-transferable pressure-sensitive adhesive layer, the pressure-sensitive adhesive does not seep out to the surface on the opposite side of the toilet seat sheet, and gives the user discomfort during use. You can get a toilet seat without the problem.

[Brief description of drawings]

FIG. 1 is a plan view showing a usage example of a toilet seat sheet of the present invention.

FIG. 2 is a plan view showing a usage example of the toilet seat sheet of the present invention.

FIG. 3 is a plan view showing a usage example of the toilet seat sheet of the present invention.

FIG. 4 is a plan view showing a usage example of a toilet seat sheet according to the present invention.

FIG. 5 is a plan development view showing one embodiment of the toilet seat sheet of the present invention.

FIG. 6 is a side view showing a storage state of the toilet seat sheet of the present invention.

FIG. 7 is a plan view showing a structure of an end portion of the toilet seat of the present invention.

FIG. 8 is a plan view showing a usage example of the toilet seat sheet of the present invention.

FIG. 9 is a front view (9-1) and a sectional view (9-2) showing another aspect of the toilet seat of the present invention.

FIG. 10 is a front view (10-1) and a sectional view (10-2) showing another aspect of the toilet seat of the present invention.

[Explanation of symbols]

1 toilet seat 2 Water-degradable material sheet 3 Non-transferable adhesive layer 4 Non-transferable adhesive material layer having a release layer on the surface 5 protrusions 6 holes 7 perforations

Claims (19)

[Claims] 1. A water-decomposable material sheet having an annular or non-annular shape in a developed state, wherein a non-transferable pressure-sensitive adhesive layer is provided on the back surface of the water-degradable material sheet. The non-transferable adhesive material layer provided on the opposite back surface,
A disposable toilet seat sheet, which is provided at positions that do not come into direct contact with each other, and is provided with a non-transferable adhesive material layer having a release layer on the surface at a position relative to the non-transferable adhesive material 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 non-transferable adhesive layer having a release layer on the surface is a single-sided tape. 8. The disposable toilet seat sheet according to claim 7, wherein the single-sided tape comprises a water-decomposable or water-soluble nonwoven fabric as a base material. 9. The disposable sheet according to claim 7, wherein the single-sided tape is based on a water-soluble polymer film. 10. A non-transferable pressure-sensitive adhesive layer having a non-transferable pressure-sensitive adhesive layer and a release layer on the surface is provided on one surface of a long water-decomposable material sheet continuously or discontinuously in the longitudinal direction. A disposable toilet seat sheet, characterized in that the sheet is provided with cutting perforations at regular intervals and is formed into a roll. 11. A pair of water-decomposable material sheets wound in a roll and polymerized with a non-transferable pressure-sensitive adhesive layer and a non-transferable pressure-sensitive adhesive layer which is a release layer on the surface being inside. The disposable toilet seat sheet according to claim 10, wherein the adhesive layer is provided so as to be in a position where it directly contacts the non-adhesive layer having a release layer on the opposite surface. 12. The disposable toilet seat sheet according to claim 10, wherein the water-decomposable material sheet contains rayon and paper fibers as main components, and the rayon content is 50% or more. 13. The disposable toilet seat sheet according to claim 10, wherein the water-decomposable material sheet is a non-woven fabric. 14. The disposable toilet seat sheet according to claim 10, wherein the non-transferable adhesive material layer is a double-sided tape. 15. The disposable toilet seat sheet according to claim 14, wherein the double-sided tape uses a water-decomposable nonwoven fabric as a base material. 16. The disposable toilet seat sheet according to claim 14, wherein the double-sided tape comprises a water-soluble polymer film as a base material. 17. The disposable toilet seat sheet according to claim 10, wherein the non-transferable adhesive material layer having a release layer on the surface is a single-sided film. 18. The disposable toilet seat sheet according to claim 17, wherein the single-sided film is made of a water-decomposable non-woven fabric as a base material. 19. The disposable toilet seat sheet according to claim 17, wherein the single-sided film comprises a water-soluble polymer film as a base material.