JP2006009231A - Wallpaper having moisture permeability/water absorbency and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide wallpaper having excellent designability, permeating moisture in a room to the outside of the room, absorbing and releasing moisture, thereby having actions of regulating the fluctuation of humidity in the room and excellent water absorbency, slightly causing dew condensation, scarcely developing flaws, etc., in the surface not only during the use but also in a process ranging from the production to application and having abundant flexibility and rub resistance and to provide a method for producing the same. <P>SOLUTION: The wallpaper is provided with a wallpaper substrate layer, an inorganic particle layer and a fiber fabric layer. The wallpaper is obtained by the method comprising a step of coating one surface of the wallpaper substrate layer with a resin solution containing inorganic particles and a synthetic resin and forming the inorganic particle layer and a step of laminating a fiber fabric to the inorganic particle layer before solidifying the coated resin solution containing the inorganic particles and the synthetic resin and forming the fiber fabric layer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wallpaper having moisture permeability and water absorption and a method for producing the wallpaper. In particular, the present invention has an excellent design property, and has an action of adjusting fluctuations in indoor humidity by having moisture permeability that allows the moisture in the room to permeate and moisture absorption and desorption that sucks or exhales the moisture, The present invention relates to a wallpaper having excellent water absorption and little condensation. Further, the present invention relates to a wallpaper having high flexibility and abrasion resistance, and a method for producing the same, which is hardly scratched on the surface not only during use but also in the process from production to construction.

  Conventionally, wallpaper used as building interior materials can be manufactured at low cost, for example, mainly composed of natural building materials such as plaster, earth, wood, paper, and petroleum. In addition, what is called vinyl wallpaper based on vinyl chloride resin is also on the market.

  Natural building materials have been reconsidered as building materials for buildings in a wet and humid environment from the viewpoint of absorbing and releasing indoor moisture and preventing condensation in winter. Recently, environmentally friendly wallpaper using diatomaceous earth (mainly silicon dioxide), which is a powdery porous inorganic mineral that is considered to be capable of absorbing and releasing moisture and moisture, can also be seen.

By the way, a moisture absorbing / releasing wallpaper using EVA resin, natural diatomaceous earth, and a thermal expansion foaming agent is disclosed as a wallpaper that can absorb and release moisture and prevent condensation (Patent Document 1).
However, in this document, although the above wallpaper has moisture absorption / release properties, there is no description from the viewpoint of moisture permeability and water absorption in different dimensions, and there is no description about flexibility and abrasion resistance. .

In addition, as a wallpaper that can absorb and release moisture and prevent condensation and mold generation, a wallpaper with a shielding layer such as polyethylene resin between the moisture absorbing and releasing layer of diatomaceous earth and the wallpaper substrate is disclosed. (Patent Document 2).
However, in this document, although the above-mentioned wallpaper is said to have humidity control and condensation prevention, it has not been specifically verified, there is no description from the viewpoint of water absorption, and flexibility and abrasion resistance are not described. There is no description.

Furthermore, it is possible to prevent the occurrence of air permeability and mold, and as a flame retardant wallpaper, add diatomaceous earth to the wallpaper base material to achieve air permeability, and further use a flame retardant material for the wallpaper base material and backing paper. Is disclosed (Patent Document 3).
However, in this document, although the above-mentioned wallpaper is said to have air permeability, it has not been specifically verified, there is no description of the water absorption viewpoint, and there is no description of flexibility and abrasion resistance.
Furthermore, none of the wallpaper described in the above-mentioned Patent Documents 1 to 3 is satisfactory in terms of design, and improvement is desired.

JP 2001-336094 A JP 2002-154178 A JP 2003-055599 A

  In view of the problems of the prior art as described above, the present invention is excellent in design and has an effect of adjusting indoor humidity fluctuations by allowing indoor humidity to permeate outside, absorb moisture, and release moisture. It is an object to provide a wallpaper having high water absorption and low condensation. Further, it is an object of the present invention to provide a wallpaper and a method for producing the wallpaper which are not only scratched on the surface in the process from production to construction, but also have a high flexibility and abrasion resistance, not only during use.

In order to solve the above problems, the present invention provides (1) a wallpaper having a wallpaper substrate layer, an inorganic particle layer, and a fiber fabric layer as defined in claim 1.
The present invention further includes (2) the wallpaper according to claim 1, wherein the inorganic particle layer includes inorganic particles, and the inorganic particles include diatomaceous earth, and (3) the inorganic particle layer has a particle diameter of 1 to 70% or more. The wallpaper of Claim 1 or 2 containing the inorganic particle which is 100 micrometers, and a synthetic resin is provided.

The present invention is also (4) the content of the inorganic particles is 50 to 1000 g / ^{m 2,} wallpaper according to any of claims 1 to 3, (5) inorganic particle layer on one surface of the wallpaper substrate layer The wallpaper according to any one of claims 1 to 4, wherein the fiber fabric layer is provided on the inorganic particle layer, and (6) the fiber fabric used for the fiber fabric layer contains cellulosic fibers. The wallpaper according to any one of claims 1 to 5, (7) the wallpaper according to any one of claims 1 to 6, wherein the fiber fabric is a nonwoven fabric having a basis weight of 10 to 100 g / m ² , (8) The wallpaper according to any one of claims 1 to 7, which has a flame retardant-containing layer.

  Furthermore, the present invention provides (9) a step of applying a resin solution containing inorganic particles and a synthetic resin to one surface of a wallpaper base material layer to form an inorganic particle layer, and a resin solution containing the applied inorganic particles and a synthetic resin. Provided is a wallpaper manufacturing method including a step of forming a fiber fabric layer by laminating a fiber fabric on the inorganic particle layer before the cake becomes solid.

  ADVANTAGE OF THE INVENTION According to this invention, the wallpaper which is excellent in the designability which has the particle | grain feeling of a wallpaper surface, and the natural color shading can be obtained. Moreover, it is possible to obtain a wallpaper having a sand wall feeling and almost no problems such as falling sand. Furthermore, it has the function of adjusting the fluctuation of indoor humidity by having moisture permeability that allows moisture in the room to permeate and moisture absorption and desorption that can absorb and exhale moisture, and is excellent in water absorption. It is possible to provide a wallpaper with less condensation. Therefore, the wallpaper of the present invention is suitable as a building material for buildings in a wet and humid environment, and is also preferable from the viewpoint of preventing condensation in winter.

  Furthermore, since the wallpaper of the present invention has flexibility and abrasion resistance, not only during use, but also in the process from manufacturing to construction, skilled techniques are unnecessary, easy handling, scratches and scrapes, There is an advantage that cracks and the like are less likely to occur.

Next, a preferred embodiment of the present invention will be described in detail.
In the wallpaper of this embodiment, an inorganic particle layer is provided on one side of the wallpaper base material layer, and a fiber fabric layer is provided on the inorganic particle layer.

(Wallpaper base material layer)
Here, the wallpaper base material layer refers to a layer formed of the wallpaper base material. As a wallpaper base material, the basis weight (per square meter) generally used for wallpaper is 50 to 300 g of synthetic paper, Japanese paper, emulsion paper, noncombustible paper, flame retardant paper, and a plurality of types selected from them. And composite paper and biodegradable paper. In addition, examples of other substrates include sheet-like materials such as acrylic resin, polypropylene resin, polyethylene resin, polystyrene resin, polyurethane resin, silicone resin, polyester resin, and polytetrafluoroethylene (PTFE). If it can form the inorganic particle layer to contain, it will not specifically limit.

  Furthermore, it is preferable that the thickness of a wallpaper base material is 5-1000 micrometers. If the thickness is less than 5 μm, the substrate may be curled or difficult to manage during processing. On the other hand, if it exceeds 1000 μm, the flexibility may be lowered, which may hinder processing such as winding, and may be undesirable from the viewpoint of weight reduction.

(Inorganic particle layer)
The inorganic particle layer provided on one side of the wallpaper base material preferably contains inorganic particles, and more preferably contains inorganic diatomaceous earth. The inorganic particle layer preferably contains at least one synthetic resin selected from an acrylic resin, a polyester resin, a polyurethane resin, and a silicone resin as a binder.

As such inorganic particles, for example, zeolite-based, diatomaceous earth-based, or silica-based particles can be used. More specifically, diatomaceous earth, aluminum hydroxide, calcium carbonate, porous silica, fossilized coral, tourmaline and the like can be mentioned, regardless of whether porous or nonporous, but preferably from the viewpoint of moisture permeability and water absorption What is porous is good. In particular, a porous material such as quenched diatomaceous earth, zeolite supporting gold or silver, or porous silica is preferably used. In addition, diatomaceous earth and sand are also preferably used from the viewpoint of designability, and from the viewpoint of negative ion generation, mineral particles containing rare elements such as fossil coral, tourmaline and cesium are preferably used, and further antibacterial viewpoints Is preferably silver, copper, zeolite carrying silver, or the like. These inorganic particles may be used by mixing a plurality of them.
The diatomaceous earth may be, for example, a porous diatomaceous earth obtained by quenching diatomaceous earth that is used as a filter material in the liquor manufacturing process.

In the present invention, inorganic particles having a particle diameter of 70% or more and 1 to 100 μm are preferably used. When there are many things less than 1 micrometer, a specific surface area will increase and it will be necessary to increase the quantity of the synthetic resin as a binder. When the amount of the synthetic resin is increased, when porous inorganic particles are used, the pores are filled and the effect as porous inorganic particles may be lost. Further, the particles absorb a large amount of the solvent, and the drying time becomes longer, which causes a problem in the manufacturing process. Furthermore, powdering may occur during the production of a resin solution for producing an inorganic particle layer, which may make handling difficult.
Moreover, when there are many things exceeding 100 micrometers, sedimentation of an inorganic particle arises at the time of the resin solution manufacture for manufacturing an inorganic particle layer, or a stripe-like fault generate | occur | produces when providing an inorganic particle layer using a coating method There is.

The inorganic particle layer is preferably inorganic particles are contained in an amount of 50 to 1000 g / ^{m 2,} and even more preferably in an amount of 150 to 800 g / ^{m 2.} If it is less than 50 g / m ² , the water absorption may be insufficient, the design properties may be lowered, and the features of the present invention may not be utilized. Moreover, when it exceeds 1000 g / m < ² >, it is disadvantageous in cost, and as a result of the flexibility being impaired, the layer containing inorganic particles may crack. Further, the thickness of the inorganic particle layer is preferably 100 to 1000 μm.

Moreover, it is preferable that the compounding ratio of an inorganic particle and a synthetic resin is 5-100 mass parts in synthetic resin solid content with respect to 100 mass parts of inorganic particles. When the blending ratio of the synthetic resin is less than 5 parts by mass, the adhesion of the inorganic particles to the wallpaper base material is weakened, and the inorganic particles may fall off when handled as wallpaper. When the blending ratio of the synthetic resin exceeds 100 parts by mass, moisture permeability, moisture absorption / release properties, and water absorption may be lowered.
In addition to the above-described inorganic particles and synthetic resins as binders, the inorganic particle layer is not limited to organic materials and inorganic materials, and pigments for coloring to enhance the design by imparting any color to wallpaper. Moreover, you may add various additives, such as a deodorizing agent for providing functionality, an ultraviolet absorber, antioxidant, a crosslinking agent, a foaming agent, a thickener, and a flameproofing agent. Addition of a foaming agent is also preferable from the viewpoint of moisture permeability, water absorption, and design.

(Fiber fabric layer)
The fiber fabric layer includes at least a fiber fabric. Examples of the fiber fabric include synthetic fibers such as polyester and nylon, regenerated fibers such as rayon and lyocell, semi-synthetic fibers such as acetate, and natural fibers such as cotton, silk, and hair. Moreover, as a form, any form, such as a woven fabric, a knitted fabric, and a nonwoven fabric, may be sufficient. It is also possible to use paper.
Cellulose fibers such as cotton, rayon and lyocell are preferably used from the viewpoints of water absorption and moisture absorption / release, and nonwoven fabrics using cellulose fibers are preferably used from the viewpoint of design. Further, these fiber fabrics may be flameproof or colored with dyes or pigments.

The fiber fabric has functions such as water absorption, moisture absorption / release properties, improved abrasion resistance, and prevention of cracking, but also has a great effect in terms of design.
In addition, a part of the synthetic resin and inorganic particles contained in the inorganic particle layer is impregnated into the fiber cloth provided on the inorganic particle layer, and further penetrates to the surface of the fiber cloth to be entirely or partially. The surface layer may be formed and may be a part of the components constituting the fiber fabric layer.

The nonwoven fabric using the cellulose-based fiber is preferably a nonwoven fabric having a basis weight of 5 to 1000 g / m ² and a thickness of 5 μm to 5000 μm. More preferably, the basis weight is 10 to 100 g / m ² . If the fabric weight and the thickness are in the above ranges, it is preferable because the protective layer has excellent abrasion resistance and excellent design properties while ensuring moisture permeability and flexibility.

The wallpaper described above is merely an embodiment, and the design can be changed as appropriate without departing from the gist of the present invention.
For example, a plurality of wallpaper base material layers, inorganic particle layers, and fiber fabric layers can be provided. Moreover, an adhesive layer can also be provided on the opposite surface of the wallpaper base material layer provided with the inorganic particle layer. If an adhesive layer is provided, it is not necessary to apply glue for attaching wallpaper on the construction site, and the construction can be simplified.

  Further, a flameproofing agent-containing layer can be further provided. The flameproof property can be imparted by using a wallpaper base material having flameproof performance, adding a flameproof agent to the inorganic particle layer, or using a fiber fabric having flameproof performance. It is more preferable to provide an agent-containing layer from the viewpoint of flameproof performance. The flameproofing agent-containing layer can be provided between the wallpaper base material layer and the inorganic particle layer or on the opposite surface of the wallpaper base material layer provided with the inorganic particle layer.

This flame retardant-containing layer contains halogen-based flame retardants containing bromine such as hexabromocyclododecane and non-halogen flame retardants such as phosphorus, nitrogen, metal salt, hydrated metal salt, and silicon. Examples thereof include a resin layer made of an acrylic resin, a urethane resin, a polyester resin, a polyamide resin, or the like. The amount of the flameproofing agent added to the resin is preferably 20 to 600 parts by weight, more preferably 100 to 200 parts by weight, based on 100 parts by weight of the resin solids.
Various additives including inorganic particles as described above may be added to the flameproofing agent-containing layer.

(Wallpaper manufacturing method)
Below, an example of the preferable manufacturing method of the wallpaper of this invention is demonstrated.
First, as the step of forming the inorganic particle layer, a resin solution for forming the inorganic particle layer is applied to one side of the wallpaper substrate that forms the wallpaper substrate layer. In order to form the inorganic particle layer, a resin solution containing inorganic particles and a synthetic resin as a binder is applied on the wallpaper substrate. As a coating method in this case, a coating method using a knife coater, a pipe coater, a comma coater, a gravure coater, spraying using a spray or the like, or an extrusion method using a T die or the like can be used.
From the viewpoint of controlling the inorganic particle layer, it is preferable to apply by a coating method using a knife coater, a pipe coater, a comma coater or the like.

As the resin solution containing the synthetic resin as the inorganic particles and the binder, the blending ratio of the inorganic particles, the synthetic resin, and the solvent is 5 to 100 parts by mass of the synthetic resin solid content with respect to 100 parts by mass of the inorganic particles. The amount is preferably 1000 parts by mass. If the blending ratio of the solvent is less than 5 parts by mass, the fluidity of the resin solution is poor, and if it exceeds 1000 parts by mass, problems such as sedimentation and drying of the added particles may occur. .
As a synthetic resin to be used, various types such as an emulsion type and a dispersion type such as an aqueous type and a solvent type can be used. Therefore, as a solvent used at this time, water, a carbon number of 1 to 3 is used. Aliphatic lower alcohols, dimethylformamide, methyl ethyl ketone, toluene and the like can be mentioned, and these solvents can be used alone or in combination. From the viewpoint of building materials, it is preferable to use water as a solvent without using a volatile organic solvent as much as possible.

  In addition, when using a hot melt type resin as a synthetic resin, it is not necessary to mix | blend a solvent. Furthermore, if it is within the above-mentioned range, a resin solution having a different amount of inorganic particles or a different amount of solvent is used, and in order to laminate two or more inorganic particle layers containing inorganic particles, a resin is applied by a coating method or the like. The application of the solution may be repeated several times.

Next, as a fiber cloth layer forming step, the fiber cloth is laminated on the resin solution before the resin solution for forming the inorganic particle layer is solidified. At this time, a part of the resin solution for forming the inorganic particle layer is infiltrated and impregnated into the fiber gaps of the laminated fiber cloth, and the natural texture of the color is caused by the unevenness of the impregnation of the fiber cloth together with the texture of the inorganic particles. Appears and new designs are developed. Furthermore, when the inorganic particles and a part of the synthetic resin are permeated to the entire surface or a part of the surface of the fiber fabric to form a surface layer, a wallpaper having a design with a different image can be obtained.
In particular, it is preferable to use a cellulose-based non-woven fabric because a product having excellent design properties, water absorption, moisture absorption / release properties, touch feeling when touched, and the like can be obtained.
Further, since the fiber fabric is impregnated with the synthetic resin contained in the inorganic particle layer, the abrasion strength is improved, and the peel strength of the fiber fabric is also improved when handled as wallpaper.

  After laminating the fiber fabric, depending on the type of resin, when using a water-based resin, drying at a temperature of about 140 ° C., or in the case of a hot melt resin, cooling to below the melting point, etc. The resin liquid for forming the inorganic particle layer is solidified to form the inorganic particle layer and the fiber fabric layer.

In the case of forming the flameproofing agent layer, when the flameproofing layer is formed using a resin solution containing the flameproofing agent, the coating method is used in the same manner as the formation of the inorganic particle layer. It is possible to apply a resin solution containing a flameproofing agent on the wallpaper base material layer and then immediately dry to form a flameproofing agent layer. The drying at this time can be performed at a temperature of about 140 ° C.
Further, the resin solution containing the flameproofing agent is preferably adjusted to have a resin solution viscosity of 3000 to 50000 cps, more preferably 5000 to 30000 cps, in order to prevent sedimentation of the flameproofing agent in the resin solution. As a method for increasing the viscosity, it is possible to adjust the blending ratio of the solvent or adjust the viscosity with a known thickener.

  Since the wallpaper of the present invention has a fiber fabric layer on the inorganic particle layer and has a fiber fabric on or near the surface of the wallpaper, it has excellent design properties, flexibility and abrasion resistance. Of course, no skill is required in the process from manufacturing to construction, the handling is simple, and scratches, scrapes, cracks, and the like are not likely to occur. Furthermore, in the wallpaper base material, by providing the pressure-sensitive adhesive layer on the opposite side of the wallpaper base material layer provided with the inorganic particle layer, it becomes rich in enforceability and processability as wallpaper, so that a preferable form can be obtained. Needless to say, it can be done.

  The present invention will be further described below using examples. The performance evaluation used in these examples was based on the method described below.

Evaluation of moisture permeability: Determined from JIS L-1099 A-1 method (calcium chloride method).
Evaluation of water absorption: It was determined from JIS L-1907 (drop method).
Thickness: Determined from an electron micrograph of the sample cross section.
Abrasion scuff resistance evaluation: evaluated by surface scratches caused by construction brushes.
JIS A6921 dry 25 times, wet 5 times

Evaluation of dew condensation A 500 ml beaker containing 500 ml of warm water of 40 ° C. is covered with wallpaper from the upper side of the beaker so that the room side of the wallpaper is on the beaker side, and fixed with rubber bands. This beaker is left in a thermo-hygrostat under conditions of 10 ° C. and 60% RH for 1 hour. The amount of water droplets adhering to the wallpaper after 1 hour was measured to determine the amount of condensation, and the unit was converted to g / m ² / hr.
How to determine the amount of dew condensation W1: Mass (g) after leaving the beaker covered with wallpaper (10 ° C, 60% RH) for 1 hour, removing the sample from the beaker so that the dew condensation does not fall
W2: Mass of wallpaper (g) after W1 is measured and then condensed water is absorbed using filter paper
S: Area of beaker mouth (m ² )
Condensation amount (g / m ² / hr) = (W1−W2) ÷ S

Evaluation of moisture absorption / release properties The sample was allowed to stand in an oven at 20 ° C., 65% RH, 30 ° C. and 90% RH for 24 hours, and then the mass was measured. In addition, drying was performed at 105 degreeC for 1 hour.
Moisture absorption rate (%) = [(weight after moisture absorption−weight after drying) / weight after drying] × 100
Then, from the moisture absorption rate (respectively MR1 and MR2) under the conditions of 20 ° C., 65% RH and 30 ° C., 90% RH measured above,
Moisture absorption / release difference (%) = MR2-MR1
Asked. It can be seen that the greater the moisture absorption / release difference, the better the moisture absorption / release properties.

Example 1
Use a comma coater to form an inorganic particle layer on one side of a wall paper emulsion paper with a basis weight (per square cubic meter) of 110 g and a thickness of 200 μm as a wallpaper base material. Water-based acrylic resin (solid content 10%) A resin solution containing 80 parts, 40 parts of water, and 100 parts of inorganic particles (Swan Co., Ltd .: Diatom Stone) having a particle size of 70% or more of 3 to 80 μm was coated (application).

Next, before the resin solution applied by coating is hardened, a non-woven cotton fabric (weighing 30 g / m ² , thickness 100 μm) is laminated as a fiber fabric on the resin solution coated at 60 ° C. at 60 ° C. After preliminary drying for 2 seconds, drying was performed at 150 ° C. for 5 minutes to obtain a wallpaper having a wallpaper substrate layer, an inorganic particle layer, and a fiber fabric layer. Although the obtained wallpaper has almost no inorganic particles on the surface of the fiber fabric, it has a sand wall feeling as an appearance over the nonwoven fabric, and it has a natural shade as a whole and is excellent in design. there were. The evaluation is described in Table 1.

Example 2
A wallpaper was obtained by the same formulation and the same process as in Example 1 except that inorganic particles having a particle diameter of 70% or more exceeding 100 μm were used instead of the fine particles used in Example 1. The evaluation is described in Table 1.
Although the obtained wallpaper had almost no inorganic particles on the surface of the fiber fabric, it had a unique design feeling over the fiber fabric, and an overall natural shade was felt.

Example 3
Instead of the fine particles used in Example 1, a wallpaper was obtained by the same formulation and the same process except that a resin solution containing 20 parts of inorganic particles having a particle diameter of 3 to 80 μm of 70% or more was used. The evaluation is described in Table 1.

Comparative Example 1
A wallpaper was obtained by the same process and formulation as in Example 1 except that the cotton nonwoven fabric was not laminated in Example 1. The evaluation is described in Table 1.
Although the obtained wallpaper has inorganic particles on the surface of the fiber fabric, there is no change in design as in the case where the conventional diatomaceous earth is directly applied to the wall, and there is no overall natural shade. It was. In addition, the inorganic particle layer dropped off and cracked during construction.

Example 4
As the wallpaper substrate, untwisted paper having a thickness of 20 μm and a basis weight of 120 g / m ² was used. In order to form an inorganic particle layer on one side of the wallpaper base material, the following resin solution was prepared.
Resin solution for inorganic particle layer Quenched diatomaceous earth (inorganic particles) 50 parts by mass Silver supported zeolite (inorganic particles) 5 parts by mass Fossil coral (inorganic particles) 35 parts by mass Orange pigment (inorganic particles) (solid content 50%) 10 parts by mass Part (70% or more of the particle diameter of the inorganic particles is 1 to 100 μm)
Polyurethane resin (solid content 50%) 80 parts by weight Water 150 parts by weight

The resin solution for the inorganic particle layer was applied onto a wallpaper substrate using a knife coater.
Next, before the resin solution hardens, it is laminated on the resin solution coated with a lyocell non-woven fabric (weighing 30 g / m ² , thickness 100 μm), dried at 140 ° C. for 3 minutes, and then heat treated at 150 ° C. for 1 minute. The wallpaper having a wallpaper base material layer, an inorganic particle layer, and a fiber fabric layer was obtained. Although the obtained wallpaper had almost no inorganic particles on the surface of the fiber fabric, it had a sand wall feeling over the non-woven fabric and an overall natural tone, and was excellent in design. The evaluation is shown in Table 2.

Comparative Example 2
The evaluation is shown in Table 2 for a commercially available wallpaper (LY-6418 vendor: Lilykara) using diatomaceous earth.
Regarding the design properties, it was a texture of diatomaceous earth only, there was no design properties as in the present invention, and no overall natural shade was felt.

  The present invention has an unprecedented design and has the function of adjusting fluctuations in indoor humidity by permeating and absorbing and releasing moisture in the room, has excellent water absorption, and dew condensation. It is possible to provide a small amount of wallpaper, which has moisture permeability and moisture absorption / release properties, and is also excellent in water absorption, so it is suitable as a building material for buildings in a wet and humid environment, and also from the viewpoint of preventing condensation in winter Also, since it has flexibility and abrasion resistance, it does not require skilled skills in the process from manufacturing to construction, not to mention use, it is easy to handle, scratches, scrapes, cracks, etc. Therefore, the present invention is very useful industrially.

Claims (9)

  A wallpaper having a wallpaper substrate layer, an inorganic particle layer, and a fiber fabric layer.   The wallpaper according to claim 1, wherein the inorganic particle layer includes inorganic particles, and the inorganic particles include diatomaceous earth.   The wallpaper of Claim 1 or 2 in which an inorganic particle layer contains the inorganic particle whose 70% or more of particle diameters are 1-100 micrometers, and a synthetic resin. The wallpaper in any one of Claims 1-3 whose content of an inorganic particle is 50-1000 g / m < ² >.   The wallpaper according to any one of claims 1 to 4, wherein an inorganic particle layer is provided on one side of the wallpaper base material layer, and a fiber fabric layer is provided on the inorganic particle layer.   The wallpaper in any one of Claims 1-5 in which the fiber fabric used for a fiber fabric layer contains a cellulosic fiber. The wallpaper in any one of Claims 1-6 whose fiber fabric is a nonwoven fabric of 10-10 g / m < ² > of fabric weights.   Furthermore, the wallpaper in any one of Claims 1-7 which has a flameproofing agent content layer.   Applying a resin solution containing inorganic particles and synthetic resin to one side of the wallpaper base material layer to form an inorganic particle layer, and before applying the resin solution containing inorganic particles and synthetic resin to the inorganic particle layer, A method for producing wallpaper comprising a step of laminating fiber fabrics to form a fiber fabric layer.