JPH11241299A - Wall paper and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare wall paper for which all kinds of materials can be selected as its base stock, creates original and rich atmosphere, can secure its long open time, can finish the joint parts in good outward appearance, causes no curling even when the paper is treated with glue, retains its toughness and emboss pattern, resultantly permits easy working operations. SOLUTION: The back face of a moisture-permeating base stock 1 is provided with a water-proof and moisture-proof layer such as a water-proof and moisture- proof adhesive, a water-proof and moisture-proof film, aluminum foil layer, and a lining material 3 is lined on the back face of this water-proof and moisture-proof layer. As a result, even when a glue is applied to the lining material 3, moisture in the glue does not penetrate into the base stock 1, because there is the water-proof and moisture-proof layer such as the water-proof and moisture-proof adhesive, the water-proof and moisture-proof film or aluminum foil layer between the base stock and the glue.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a wallpaper and a method for producing the wallpaper. Wallpaper is roughly classified into paper wallpaper and vinyl wallpaper according to the material of the base material on the surface. Paper Wallpaper 12
There are papers having a thickness of about 0 to 180 μ as a base material and a backing paper stuck to the back surface of the base material or paper alone. The vinyl wallpaper has a base material made of a non-water-permeable synthetic resin such as vinyl chloride, an acrylic resin, a polyolefin resin, and an ethylene vinyl acetate resin, and a backing paper is attached to a back surface of the base material. The present invention relates to a wallpaper having more excellent workability than a paper wallpaper or a vinyl wallpaper, and a method for producing the wallpaper.

[0002]

2. Description of the Related Art To apply a wallpaper such as a vinyl wallpaper or a paper wallpaper to a wall, glue is applied to the back surface of the wallpaper and then the wallpaper is attached to a wall such as a ceiling or an inner wall. The time that can be secured from the application of glue on the back of the wallpaper to the application of the wallpaper to the wall and the start of construction is called open time.
In addition, the sticking property when the wallpaper is attached to the wall is called tackiness, and the higher the tackiness, the more easily the wallpaper can be attached. Furthermore, in order to cover the entire wall with wallpaper, it is necessary to attach a plurality of wallpapers to the wall. The portion where the wallpaper and the wallpaper are adjacent is called a joint, and the appearance of this joint determines the quality of the wallpaper construction. For this reason, the joint portion is pressed against the wall with a roller or the like to finish the finish, thereby improving the appearance.

[0003] By the way, paper wallpaper has been around for a while,
There are several disadvantages, such as: First, when installing paper wallpaper on a wall, the moisture of the glue applied to the back surface is absorbed by the base material on the front surface, and the moisture absorbed by the base material is partially absorbed by the surface of the base material. It escapes and evaporates. Therefore, the glue dries quickly. As a result, at the site, even if the wallpaper is once coated with glue, it immediately dries out, and the work of applying and pasting glue, and applying and pasting glue must be repeated many times, resulting in poor workability. .

[0004] Second, paper is an aggregate of cellulose fibers, the orientation of which is usually portrait. Therefore, if the paper contains moisture, the fibers expand and the paper expands about 1% in the horizontal direction. As described above, the paper wallpaper has a base material on its surface, and thus expands in the horizontal direction when it contains moisture. For this reason, when the paper is glued to the paper wallpaper and applied to the wall, the paper wallpaper contains the moisture of the glue and is in a state of extending in the horizontal direction. Therefore,
At the time of construction, even when the joint portion is beautifully finished, when the paper wallpaper is dried, it shrinks in the horizontal direction, and as a result, adjacent paper wallpapers separate from each other, resulting in an aperture in the joint portion. .

Third, as described above, paper wallpaper expands and contracts due to water content. For this reason, if glue is applied to only one side of the paper wallpaper, a difference in the expansion and contraction rate occurs on the front and back sides, resulting in curling,
There is a problem that this curl becomes an obstacle in construction.

Fourth, paper maintains its strength by hydrogen bonding between its constituent fibers. For this reason, if the paper contains water, the hydrogen bonds between the fibers are broken, and the strength of the paper is degraded. Therefore, the paper wallpaper after the paste is applied loses its stiffness, which is an obstacle in construction.

Fifth, paper wallpaper loses its stiffness due to water content. For this reason, when the paper wallpaper containing water is pressed by the roller, the emboss pattern is crushed.

On the other hand, when installing vinyl wallpaper on a wall,
Since the base material on the surface does not absorb moisture, the moisture of the glue absorbed by the backing paper is retained, and the glue is not easily dried. Therefore,
The open time of vinyl wallpaper is longer than the open time of paper wallpaper. Since vinyl wallpaper has a long open time, a large amount of wallpaper can be simultaneously glued and can be applied to all surfaces of a wall to be applied in a short time. In addition, the wallpaper can be glued at the factory, transported to the site, and immediately applied to the wall at the site. In this way, vinyl wallpaper, compared to paper wallpaper,
The workability is high because the open time is long. This vinyl wallpaper has emerged since the 1970s and now accounts for 90% of the market.

[0009] By the way, by changing the wallpaper, the image of the room where the wallpaper is pasted changes suddenly. If the pattern of the wallpaper is different, the comfort in the room is different even if the room is otherwise the same. For this reason, the user of the room selects wallpaper according to the purpose of use of the room. Consumer needs are diversifying, and there is a need for unique and rich wallpaper.

[0010]

However, while knowing that the needs of consumers are diversifying and that a unique wallpaper is required, the wallpaper can be obtained only by the pattern or embossed pattern on the surface. And could not be differentiated. That is, when the base material of the wallpaper is made of a material other than the non-water-permeable synthetic resin used for the base material of the vinyl wallpaper, the base material has the same moisture content as the paper wallpaper as in the case of the paper wallpaper. This is because, as in the case of the paper wallpaper, defects such as deterioration of workability are exhibited. For this reason, there is a problem that the material of the base material of the wallpaper is limited to paper and impermeable synthetic resin.

In view of such circumstances, the present invention can adopt various materials having a desired texture and texture as a material of a base material of a wallpaper, and can create a unique and rich atmosphere, and , Open time can be secured for a long time, joints can be finished well, and even if glue is applied, curling will not occur, and waist strength and embossed pattern will be maintained. The purpose is to provide a wallpaper that can be.

Another object of the present invention is to provide an opaque wallpaper which is easily peeled off during the re-placing work, and does not show through the dirt or the groundwork of the wall surface after the re-placing. A further object of the present invention is to provide a method for producing a wallpaper which is rich in design and flexible and easy to construct, no matter what material is used for the wallpaper.

[0013]

According to the first aspect of the present invention, there is provided a wallpaper having a moisture-permeable base material, a waterproof / moisture-proof layer provided on the back surface of the base material, and a backing layer provided on the back surface of the waterproof / moisture-proof layer. And characterized by the following. A second aspect of the present invention is the wallpaper according to the first aspect, wherein the base material is paper. The wallpaper according to claim 3 is the invention according to claim 1,
The waterproof and moisture-proof layer is a waterproof and moisture-proof adhesive. According to a fourth aspect of the present invention, in the first aspect of the invention, the waterproof and moisture-proof layer is a waterproof and moisture-proof film. According to a fifth aspect of the present invention, in the first aspect of the invention, the waterproof and moisture-proof layer is a thin film of aluminum. The wallpaper of claim 6 is claim 1
In the above invention, the basis weight of the backing layer is 40 to 60.
g / m ² . The wallpaper according to claim 7 is the invention according to claim 1, wherein the backing layer has a wet tensile strength (JIS P8135) of a dry tensile strength (JIS P8113).
It is not less than 5%. The wallpaper of claim 8 is
The invention according to claim 1, wherein the inner strength of the backing layer is weaker than the adhesive strength of the waterproof and moisture-proof layer and the adhesive strength of a construction paste used for sticking to a wall surface during construction. . A ninth aspect of the present invention is the wallpaper according to the first aspect, wherein the backing layer is colored with a dye, a colored application material, or the like. The method for producing a wallpaper according to claim 10, wherein the base material, the waterproof and moisture-proof layer, and the backing layer are laminated and joined,
It is characterized in that printing is performed on the surface of the base material layer, and then embossing is performed. The method for producing wallpaper according to claim 11 is characterized in that the base material is printed, then embossed, and then the base material, the waterproof and moisture-proof layer and the backing layer are laminated and joined.

[0014]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view of the wallpaper of the first embodiment. As shown in FIG. 1, the wallpaper of the first embodiment includes a waterproof and moisture-proof adhesive 2 </ b> A on the back surface of a permeable base material 1.
Is applied, and the backing layer 3 is superimposed on and bonded to the waterproof and moisture-proof adhesive 2A. In addition, a thin film may be attached to the surface of the
A configuration in which flame-retardant paper is interposed between the waterproof and moisture-proof adhesive 2A and the waterproof and moisture-proof adhesive 2A may be employed.

The material of the base material 1 may not be a water-impermeable synthetic resin, but may be a moisture-permeable material such as paper, Japanese paper, non-woven fabric, cloth, leather or the like having desired texture and texture. Material can be adopted. The reason will be described later.

The waterproof and moisture-proof adhesive 2A may be a hot-melt type, solvent type or emulsion type waterproof adhesive. For example, various adhesives can be used as long as the adhesive is a waterproof and moisture-proof adhesive mainly composed of polyethylene, vinylidene chloride, acrylic, styrene acrylic, styrene-butadiene resin, vinyl acetate, ethylene vinyl acetate resin (ethylene vinyl alcohol resin), and the like. Can be adopted.

The backing layer 3 is a paper or other material having a basis weight of about 40 to 60 g / m ² . If the basis weight of the backing layer 3 is less than 40 g / m ² , the ability of the backing layer 3 to absorb the moisture of the glue becomes too small, and the expression of tackiness becomes slow,
Poor adhesion results. Conversely, when the basis weight of the backing layer 3 exceeds 60 g / m ² , the backing layer 3 absorbs the moisture of the glue, so that the open time is shortened, the difference in the expansion and contraction ratio occurs on the front and back surfaces, and curling and the like are caused. Obstacles in construction are likely to occur. Therefore,
When the basis weight of the backing layer 3 is 4 g / m ² to 60 g / m ² , the tackiness is maintained, the open time is not shortened, and there is no effect on the construction such as curling.

Further, the basis weight of the backing layer 3 is 40 to 60 g /
With m ² , in addition to the above effects, the backing layer 3 can have an appropriate wet strength, and this makes it difficult for the paper layer surface or the inside of the paper layer to be damaged. Can be realized.

The backing layer 3 may be made of not only paper made of natural plant fibers but also recycled paper such as rayon or synthetic paper made of synthetic fibers such as polyolefin and polyester. The material is not particularly limited as long as it is thin.

In order to manufacture the wallpaper of the first embodiment, a conventional method such as a melt extrusion method or a coater coating method may be used.
The waterproof and moisture-proof adhesive 2A applied to the entire back surface of the
The backing paper 3 is bonded to the substrate 1.

Next, the operation and effect of the wallpaper of the first embodiment will be described. In order to install the wallpaper of the first embodiment on the wall,
First, application glue is applied to the back surface of the backing layer 3 of the wallpaper of the first embodiment. Although this application glue contains moisture, since the base material 1 is waterproofed by the waterproof and moisture-proof adhesive 2A of the wallpaper of the first embodiment, there is an effect that the moisture of the application glue does not penetrate into the base material 1. For this reason, the open time of the wallpaper of the first embodiment is equal to or longer than the open time of the vinyl wallpaper, a large amount of wallpaper can be simultaneously glued, and short on all surfaces of the wall to be constructed. Can be constructed in time. Further, the wallpaper of the first embodiment can be glued to the wallpaper of the first embodiment at a factory and then transported to the site to immediately apply the wallpaper of the first embodiment to the wall at the site.
Further, the wallpaper of the first embodiment does not curl because the moisture of the applied glue does not penetrate into the base material 1 even if the applied glue is applied to the back surface of the backing layer 3. As a result, there is an effect that the construction work can be performed easily.

Therefore, the material of the substrate 1 may be a water-permeable or moisture-permeable material, and a wide variety of materials can be used. That is, various materials such as Japanese paper, nonwoven fabric, cloth, and leather can be adopted as the material of the base material 1. Therefore, the base material 1 of the wallpaper of the first embodiment can have not only the surface pattern and the embossed pattern but also the original fun of the material. As a result, there is an effect that a unique and rich atmosphere can be created.

Next, the wallpaper of the second embodiment will be described.
In the wallpaper of the second embodiment, a waterproof and moisture-proof film 2B is adhered to the back of a moisture-permeable base material 1, and a backing layer 3 is adhered to the back of the waterproof and moisture-proof film 2B. Second
The base material 1 and the backing layer 3 of the wallpaper of the embodiment are the same as those of the first embodiment.
A material substantially the same as the base material 1 and the backing layer 3 in the wallpaper of the embodiment may be used. It should be noted that a thin film may be attached to the surface of the base material 1 to prevent contamination, or a flame-retardant paper may be interposed between the base material 1 and the waterproof and moisture-proof film 2B.

The waterproof and moisture-proof film 2B is made of polyethylene,
Polypropylene, polyester, polyamide, acrylic, vinylidene chloride, ethylene vinyl acetate resin (ethylene vinyl alcohol resin), vinyl acetate, styrene, styrene-butadiene resin, moisture-proof cellophane Various films can be adopted.

In order to manufacture the wallpaper of the second embodiment, first, a waterproof and moisture-proof film 2B is laminated on the back surface of the base material 1, and the backing layer 3 is laminated on the back surface of the waterproof and moisture-proof film 2B.
The waterproof and moisture-proof film 2B and the backing layer 3 are laminated in this order. Then, the base material 1 and the waterproof / moisture-proof film 2B and the waterproof / moisture-proof film 2B and the backing layer 3 may be simultaneously bonded by dry lamination, wet lamination, heat bonding, or the like.

In the wallpaper of the second embodiment, the base material 1 is waterproofed by the waterproof and moisture-proof film 2B as in the case of the wallpaper of the first embodiment, even if the application paste is applied to the back surface of the backing layer 3. The effect that the moisture of the application glue does not penetrate into the base material 1 is exerted. For this reason, the open time of the wallpaper of the second embodiment is equal to or longer than the open time of the vinyl wallpaper, so that a large amount of wallpaper can be simultaneously glued, and short on all surfaces of the wall to be constructed. Can be constructed in time. Further, the wallpaper of the second embodiment can be glued to the wallpaper at the factory and then transported to the site so that the wallpaper of the second embodiment can be immediately applied to the wall at the site. Further, the wallpaper of the second embodiment does not curl because the moisture of the glue does not penetrate into the base material 1 even if the glue is applied to the back surface of the backing layer 3, and the waist strength and the emboss pattern are maintained. As a result, there is an effect that the construction work can be performed easily.

Therefore, the material of the substrate 1 may be a water-permeable or moisture-permeable material, and a wide variety of materials can be used. That is, various materials such as Japanese paper, nonwoven fabric, cloth, and leather can be adopted as the material of the base material 1. Therefore, the base material 1 of the wallpaper of the second embodiment can have not only the surface pattern and the embossed pattern but also the original fun of the material. As a result, a unique and rich atmosphere can be created.

Next, the wallpaper of the third embodiment will be described.
The wallpaper of the third embodiment is a wallpaper in which an aluminum thin film 2C is attached to the back surface of a moisture-permeable base material 1, and the aluminum thin film 2C is attached. The base material 1 and the backing layer 3 of the third embodiment may be made of substantially the same material as the base material 1 and the backing layer 3 of the wallpaper of the first and second embodiments. In addition, a thin film is stuck on the surface of the substrate 1 to prevent contamination. A configuration in which flame retardant paper is interposed between the base material 1 and the aluminum 2C may be employed.

Aluminum 2C has a thickness of about 20 μm.
About aluminum foil. The aluminum thin film 2C may be not only an aluminum foil but also a film in which vaporized aluminum is deposited on the back surface of the substrate 1 or on the surface of the backing layer 3.

In order to manufacture the wallpaper of the third embodiment, first, a waterproof and moisture-proof film 2C is overlaid on the back surface of the base material 1, and the backing layer 3 is overlaid on the back surface of the waterproof and moisture-proof film 2C.
The waterproof and moisture-proof film 2C and the backing layer 3 are laminated in this order. Then, the base material 1 and the waterproof and moisture-proof film 2C and the waterproof and moisture-proof film 2C and the backing layer 3 may be simultaneously bonded by dry lamination, wet lamination, heat bonding, or the like.

In the wallpaper of the third embodiment, the base material 1 is waterproofed by the waterproof and moisture-proof film 2C as in the case of the wallpaper of the first embodiment, even if the application paste is applied to the back surface of the backing layer 3. The effect that the moisture of the application glue does not penetrate into the base material 1 is exerted. For this reason, the open time of the wallpaper of the third embodiment is equal to or longer than the open time of the vinyl wallpaper, and a large amount of wallpaper can be simultaneously glued, and short on all surfaces of the wall to be constructed. Can be constructed in time. Further, the wallpaper of the third embodiment can be glued to the wallpaper of the third embodiment at a factory and then transported to the site, where the wallpaper of the third embodiment can be immediately applied to the wall at the site. Further, the wallpaper of the third embodiment does not curl because the moisture of the application glue does not penetrate into the base material 1 even when the application glue is applied to the back surface of the backing layer 3, and the waist strength and the emboss pattern are reduced. As a result, there is an effect that the construction work can be performed easily.

Therefore, the material of the substrate 1 may be a water-permeable or moisture-permeable material, and a wide variety of materials can be used. That is, various materials such as Japanese paper, nonwoven fabric, cloth, and leather can be adopted as the material of the base material 1. Therefore, the base material 1 of the wallpaper according to the third embodiment can have not only the surface pattern and the embossed pattern but also the original fun of the material. As a result, a unique and rich atmosphere can be created.

In the wallpaper of the present invention, the backing layer 3 has a wet tensile strength (JIS P8135) and a dry tensile strength (JIS P8135).
8113) is preferably 25% or more. This is based on the following reasons. In order to improve the open time, a waterproof and moisture-proof layer was provided in the present invention.However, if the only factors that determine the open time are permeation of the moisture of the application glue into the base material layer and drying of the moisture from the base material layer surface Further, the present inventors have further found that the wet tensile strength of the backing layer 3 is also present. That is, if the wet tensile strength (strength when wetted with water) of the backing layer 3 is weak, the construction glue is applied to the back surface and the glue surfaces are stacked and stored.
During the open time (that is, during the open time), the strength of the backing layer 3 is greatly reduced due to the presence of water, and the paper layer is damaged on the surface or inside of the backing layer 3, so that the open time cannot be obtained. Therefore, in the present invention, a wet paper strength enhancer such as polyamide epichlorohydrin resin, melamine resin, urea resin, dialdehyde starch, and polyethyleneimine was used to maintain the strength of the backing layer 3 when containing water. As a result, the wallpaper of the present invention was able to achieve an unprecedented long open time in combination with the presence of the waterproof and moisture-proof layer 2.

The backing layer 3 in the wallpaper of the present invention preferably has an internal strength lower than the adhesive strength of the waterproof and moisture-proof layer 2 and the adhesive strength of the applied glue. However, the above-mentioned wet tensile strength must be satisfied. As described above, the internal strength is relatively determined by the relationship between the adhesive strength of the waterproof and moisture-proof layer 2 and the adhesive strength of the applied glue, and thus cannot be limited as an absolute value. The above internal strength is required for the following reason. The wallpaper is used on a regular basis. Here, a problem that arises during the replacement work is whether the wallpaper is easily peelable, and is generally called “peeling peeling”. In other words, the old wallpaper is peeled off from the wall before the new wallpaper is applied.At that time, if the wallpaper breaks down irregularly, some parts remain on the wall, and some parts are completely peeled off, the back is bumpy. And the unevenness will remain when a new wallpaper is set up.
In the present invention, by setting the internal strength of the backing layer 3 to be weaker than the adhesive strength of the waterproof and moisture-proof layer also having an adhesive function and the adhesive strength of the construction glue used for attaching to the wall surface during construction, In addition, delamination was intentionally caused inside the backing layer 3, and one thin skin of the backing layer 3 remained on the wall side, so that the peeled wall surface could be made flat. For this reason, wallpaper replacement can be performed neatly.

It is preferable that the backing layer 3 in the wallpaper of the present invention is colored by adding a dye or a colored pigment to reduce the transmittance of light so as to have a hiding property. The reason is as follows. In other words, as a requirement of the wallpaper, even if the wall surface is dirty or the old wallpaper remains at the time of re-placing, it is necessary to have a concealment property in which the base can not be seen from the surface after the new wallpaper is put. . Usually, in the conventional vinyl chloride wallpaper or the like, the backing layer 3 is provided with such a concealing property by adding a filler having a large refractive index such as aluminum hydroxide, titanium oxide, clay, and talc.
The addition of fillers reduces the strength of the wallpaper. Therefore,
In the present invention, in order to prevent a decrease in open time resulting from a decrease in strength due to the filler, no filler is used at all,
The backing layer 3 was colored with a dye or a colored pigment. As a result, the backing layer 3 of the present invention was able to reduce the light transmittance and achieve the concealing property. As described above, since no filler is used, a longer open time can be realized.

In the present invention, by selecting a production method according to the properties of the substrate 1, it is possible to obtain a wallpaper having a rich design and a flexible and easy-to-construct wallpaper. In the present invention, roughly two different manufacturing methods are proposed. That is, in the first manufacturing method, as shown in FIG. 4A, the substrate 1, the waterproof / moisture-proof layer 2 and the backing layer 3 are laminated and bonded, and then printed on the surface of the substrate layer 1, and then, as shown in FIG. As shown in (2), embossing is performed on the entire wallpaper. In the second manufacturing method, as shown in FIG. 5 (A), printing is performed on the base material 1, followed by embossing, and thereafter, as shown in FIG. The backing layer 3 is laminated and joined. The first manufacturing method is used when it is desired to use a soft material for the substrate 1. In this case, since the base material 1 is soft, even if the entire wallpaper is deeply embossed,
No embossing collapse occurs. Therefore, an expressive and flexible wallpaper that is easy to construct can be obtained. The second manufacturing method includes the steps of:
Used when you want to use a hard material. in this case,
The base material 1 can be deeply embossed to provide an expressive design, and the embossing can be prevented by the hardness of the base material 1 during lamination. The material 1 and the waterproof / moisture-proof layer 2 are adhered to each other by point bonding of concave and convex concave portions by embossing (see FIG. 5 (B)). You can get a wallpaper with a certain. The invention of claim 1 has an effect that a fixed open time can be ensured even if any material is used, and various materials can be used as the base material of the wallpaper. In addition, as described above, by selecting a manufacturing process in accordance with the properties of the base material 1, it is possible to obtain a wallpaper having a rich design and a flexible and easy-to-install material regardless of the material used. It is.

[0037]

Next, an embodiment of the wallpaper of the present invention will be described. [Example 1] A paper having a basis weight of 120 g / m ² was used as a substrate 1, and a waterproof and moisture-proof adhesive 2A containing a mixture of acrylic and wax was applied to the back surface of the substrate 1 at a basis weight of 10 g / m ^2. Example 1 has a backing layer 3 of paper having a basis weight of 60 g / m ² attached to the back surface of the waterproof and moisture-proof adhesive 2A. [Example 2] A paper having a basis weight of 100 g / m ² was used as a substrate 1, and a 20 μm ethylene vinyl acetate film was adhered to the surface of the substrate 1 to prevent dirt. Has a thickness of 2
A waterproof and moisture-proof film 2B of 0 μ low-density polyethylene is adhered, and the basis weight of the waterproof and moisture-proof film 2B is 50
Example 2 has a backing layer 3 of paper of g / m ² adhered thereto. [Example 3] Japanese paper having a basis weight of 120 g / m ² was used as a base material 1, a 20 μm aluminum thin film 2C was attached to the back surface of the base material 1, and 40 g / m ² paper was applied to the back surface of the aluminum 2C. Example 3 was prepared by attaching the backing layer 3 of Example 1.

Comparative Example 1 A paper having a basis weight of 100 g / m ² was used as a substrate 1
The surface of the substrate 1 has a thickness of 20 μm to prevent contamination.
Comparative Example 1 is a paper wallpaper in which an ethylene vinyl acetate film is applied and a flame retardant paper of 80 g / m ² is stuck on the back surface of the base material. [Comparative Example 2] A vinyl wallpaper having a thickness of 150 µm as a substrate 1 and flame retardant paper 80 g / m ² stuck to the back surface of the substrate is referred to as Comparative Example 2.

(Evaluation method) Under an environment of room temperature of 20 ° C. and humidity of 65%, the back surface of each of Examples 1, 2, and 3 and Comparative Examples 1 and 2 was coated with a starch-based adhesive diluted with 100% water at 50 g / m 2. ² After application, make contact with the application side inside and fold and leave. With each lapse of time, the adhesion of the material and the breaking state of the material were measured. The results are shown in the following table.

[0040] 1 hour 8 hours 16 hours 24 hours 48 hours Example 1 ○ ○ ○ ○ △ Example 2 ○ ○ ○ ○ ○ Example 3 ○ ○ ○ ○ ○ Comparative Example 1 △ × × × × Comparative Example 2 ○ ○ ・ △ ×  (Note) ○: No adhesion, no material change △: 50% adhesion, material destruction ×: 100% adhesion, material destruction

As is clear from the table, in Example 1, even after 24 hours had passed, the bonding between the materials and the material destruction due to the bonding did not occur, and the bonding started to break from around 48 hours. In both Example 2 and Example 3, no adhesion or material destruction occurred even after 48 hours. On the other hand, in Comparative Example 1 (paper wallpaper), 50% or more adhesion and material destruction occurred after 1 hour, and 100% adhesion after 8 hours.
Material destruction has occurred. In Comparative Example 2 (vinyl wallpaper), 2
After 4 hours, 50% adhesion and material destruction occurred. In Examples 1 to 3, although paper or Japanese paper is used as the base material 1,
These are only examples, besides these materials, non-woven fabric,
Various materials having desired texture and texture, such as cloth and leather, can be adopted.

[0042]

According to the wallpaper of the first aspect, various materials having desired texture and texture can be adopted as the material of the base material of the wallpaper, and a unique and rich atmosphere can be created. And the open time can be ensured for a long time.The joint can be finished with good appearance.Even if glue is applied, curling does not occur and the waist strength and emboss pattern are maintained. It can be carried out. According to the wallpaper of claim 2, various materials having a desired texture and texture can be adopted as the material of the base material of the wallpaper, and a unique and rich atmosphere can be created, and the wallpaper can be opened. You can secure a long time, you can finish the joint part well and it will not curl even if you apply glue,
The waist strength and the emboss pattern are maintained, and as a result, the construction work can be performed easily. According to the wallpaper of claim 3, various materials having desired texture and texture can be adopted as the material of the base material of the wallpaper, and a unique and rich atmosphere can be created, and the wallpaper can be opened. A long time can be secured, the joint portion can be finished well, and even if glue is applied, curling does not occur, and waist strength and an emboss pattern are maintained. As a result, construction work can be performed easily. According to the wallpaper of claim 4, various materials having a desired texture and texture can be adopted as the material of the base material of the wallpaper, and a unique and rich atmosphere can be created, and the wallpaper can be opened. A long time can be secured, the joint portion can be finished well, and even if glue is applied, curling does not occur, and waist strength and an emboss pattern are maintained. As a result, construction work can be performed easily. According to the wallpaper of claim 5, various materials having desired texture and texture can be adopted as the material of the base material of the wallpaper, and a unique and rich atmosphere can be created, and the wallpaper can be opened. You can secure a long time, you can finish the joint part well and it will not curl even if you apply glue,
The waist strength and the emboss pattern are maintained, and as a result, the construction work can be performed easily. According to the sixth aspect of the invention, the tackiness is maintained, no trouble such as curling occurs, and the wet tensile strength is sufficient, so that the open time can be extended. According to the seventh aspect of the present invention, the backing layer has sufficient strength when containing water and does not break the paper layer, so that a longer open time can be realized. Claim 8
According to the invention of (1), when the wallpaper is peeled off from the wall surface when replacing the wallpaper, one thin skin of the backing layer remains clean, so that the wall surface after the peeling becomes flat. For this reason, the wallpaper to be laid next is finely finished. According to the ninth aspect of the present invention, it is possible to conceal dirt on the wall surface before replacing the wallpaper or the color on the old wall surface, etc. In addition, since no filler is used, the strength of the paper layer does not decrease and the open time can be extended. it can. According to the tenth aspect of the invention, even when a soft material is used for the base material, the embossing is not broken and the construction can be performed flexibly, so that an expressive wallpaper can be obtained. According to the eleventh aspect of the invention, even when a hard material is used for the base material, the concave portions of the base material generated by embossing are point-bonded to the backing layer, so that flexibility can be provided as a whole. For this reason, flexible wallpaper can be obtained even if the base material itself is hard.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a wallpaper according to a first embodiment.

FIG. 2 is a schematic cross-sectional view of a wallpaper according to a second embodiment.

FIG. 3 is a schematic sectional view of a wallpaper according to a third embodiment.

FIG. 4 is an explanatory diagram of a first method for producing wallpaper according to the present invention.

FIG. 5 is an explanatory diagram of a second method for producing wallpaper according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material 2A Waterproof moistureproof adhesive 2B Waterproof moistureproof film 3C Aluminum thin film 3 Backing layer

Claims (11)

[Claims] 1. A wallpaper comprising a moisture-permeable base material, a waterproof / moisture-proof layer provided on the back surface of the base material, and a backing layer provided on the back surface of the waterproof / moisture-proof layer. 2. The wallpaper according to claim 1, wherein said base material is paper. 3. The wallpaper according to claim 1, wherein the waterproof and moisture-proof layer is a waterproof and moisture-proof adhesive. 4. The wallpaper according to claim 1, wherein said waterproof and moisture-proof layer is a waterproof and moisture-proof film. 5. The wallpaper according to claim 1, wherein said waterproof and moisture-proof layer is a thin film of aluminum. 6. The wallpaper according to claim 1, wherein the backing layer has a basis weight of 40 to 60 g / m ² . 7. The backing layer has a wet tensile strength (JIS P8135).
) Is at least 25% of the dry tensile strength (JIS P8113). 8. The backing layer according to claim 1, wherein the inner strength of the backing layer is weaker than the adhesive strength of the waterproof / moistureproof layer and the adhesive strength of the glue used for sticking to the wall surface during construction.
The described wallpaper. 9. The wallpaper according to claim 1, wherein said backing layer is colored with a dye or a colored application. 10. A method for producing wallpaper, comprising: laminating and joining the base material, the waterproof and moisture-proof layer, and the backing layer, printing the surface of the base material layer, and then performing embossing. 11. A method for producing wallpaper, comprising printing on the substrate, embossing the substrate, and then laminating and bonding the substrate, the waterproof and moisture-proof layer, and the backing layer.