KR100467807B1 - Functional wall paper comprising photo catalyst - Google Patents

Abstract

The present invention relates to a functional wallpaper, and more particularly, in a multi-layer wallpaper, a functional wallpaper having a titanium dioxide photocatalyst in at least one layer and having excellent antibacterial function, organic substance decomposition function, and odor and odor removal function. It is about.

In order to achieve the above object, the present invention provides a functional wallpaper including a titanium dioxide photocatalyst having a size of 0.1 to 100 nm in any one or more layers of the wallpaper having a multilayer structure.

The functional wallpaper containing the ultrafine titanium dioxide photocatalyst of the present invention in one layer is excellent in antibacterial function, organic matter decomposition function, odor and odor removal function, which are inherent functions of the photocatalyst, beyond the simple wall finishing function of the conventional wallpaper.

Description

Functional wallpaper containing photocatalyst {FUNCTIONAL WALL PAPER COMPRISING PHOTO CATALYST}

The present invention relates to a functional wallpaper, and more particularly, in a multi-layered wallpaper, a titanium dioxide photocatalyst is contained in any one or more layers, thereby providing a functional wallpaper having excellent antibacterial function, organic matter decomposition function, and odor and odor removal function. It is about.

Wallpaper is a paper that protects the wall and is applied for decoration. Laminated wallpaper such as polyvinyl chloride, silk wallpaper, or foam wallpaper is used in recent years. Recently, not only the wall finishing function but also the stain resistance of the product surface, There is a great demand for functional wallpaper that can remove antimicrobial, odor and odor.

Conventional antimicrobial wallpaper is prepared by containing a conventional organic or inorganic antimicrobial agent in the base or processed paper, but the effect does not appear as the amount of the antimicrobial agent, and when using an organic antimicrobial agent has a low sustainability problem.

In order to compensate for this, manufacturers are manufacturing by coating or impregnating antimicrobial agents on the surface or the back side of the wallpaper like resin, but there are limitations in diversifying the exterior design of wallpaper with irregularities such as embossed patterns. There is a problem with limitations.

On the other hand, the technology using the antimicrobial properties of titanium dioxide photocatalyst is applied to the Korean Patent Application No. 1995-19715 by applying a photocatalyst material that contains antibacterial materials such as titanium dioxide and silver or copper to generate active oxygen to have sterilization and antibacterial function Antimicrobial products such as antimicrobial films, containers, sheets, and the like are disclosed, and Korean Patent Application No. 2000-76919 discloses a functional traditional paper for coating and manufacturing titanium dioxide calcined by heating to 400 to 500 ° C. .

In addition, in case of wallpaper, Korean Patent Application No. 1999-37009 discloses a wallpaper coated with titanium dioxide photocatalyst powder on its surface. In particular, titanium dioxide used for the antibacterial and deodorizing function is controlled to a micro level (micro level) to increase the catalyst surface area to increase the catalytic activity to exhibit antibacterial and deodorant properties, but there is a limit to the catalyst activation at the micro level, Because it is a scattering coating on the surface of the wallpaper, it can be applied only to general paper wallpaper, and since the scattering coating of titanium dioxide is not possible to coat a thin film of 0.01 to 0.02 ㎜, the design of the wallpaper is limited. There is a problem in that the wallpaper can not maintain the original appearance design when manufacturing.

In view of the problems of the prior art, an object of the present invention is to provide a functional wallpaper that can be manufactured using the conventional wallpaper manufacturing technology and construction technology as it is, but excellent in antibacterial function.

Another object of the present invention is to provide a functional wallpaper having excellent antibacterial, fouling resistance, and deodorizing function while being manufactured with various exterior designs inherent to the wallpaper.

Still another object of the present invention is to provide a polyvinyl chloride-based foam laminated wallpaper or laminated wallpaper which contains an activated titanium dioxide photocatalyst in any one layer and can exhibit antibacterial, fouling resistance, and deodorizing function.

1 is a cross-sectional view of a functional polyvinyl chloride wallpaper containing a titanium dioxide photocatalyst according to an embodiment of the present invention.

2 is a cross-sectional view of a functional polyvinyl chloride wallpaper containing a titanium dioxide photocatalyst according to another embodiment of the present invention.

3 is a cross-sectional view of a functional polyvinyl chloride wallpaper containing a titanium dioxide photocatalyst according to another embodiment of the present invention.

4 is a cross-sectional view of a functional laminated wallpaper containing a titanium dioxide photocatalyst according to another embodiment of the present invention.

5 is a cross-sectional view of a general polyvinyl chloride wallpaper.

FIG. 6 is a manufacturing process diagram of a functional polyvinyl chloride wallpaper (FIG. 1) containing a titanium dioxide photocatalyst which is an embodiment of the present invention.

7 is a manufacturing process diagram of a functional laminated wallpaper (FIG. 4) containing a titanium dioxide photocatalyst which is another embodiment of the present invention.

Description of the main symbols in the drawings

1: titanium dioxide photocatalyst 10: base paper

20: polyvinyl chloride foam layer 30: printing layer

40: surface treatment layer

50: functional layer containing titanium dioxide photocatalyst

60: upper layer 70: adhesive layer

In order to achieve the above object, the present invention provides a functional wallpaper including a titanium dioxide photocatalyst having a size of 0.1 to 100 nm in any one or more layers of the wallpaper having a multilayer structure.

Hereinafter, the present invention will be described in detail.

The titanium dioxide photocatalyst of 0.1 to 100 nm size used in the functional wallpaper of the present invention is dispersed in an active state in a very small size, so that it can decompose contaminants with strong oxidizing power. Particularly, the photocatalyst exhibits characteristics of photocatalyst due to its potential difference upon receiving light, and is superior to conventional micro-level titanium dioxide photocatalysts, and thus has excellent oxidation power and excellent durability. In addition, the oxidizing power of the titanium dioxide is due to the hydroxyl radical contacted, and since the oxidizing power such as ozone and chlorine has more than twice the oxidizing power, it is possible to oxidize and decompose many kinds of contaminants without being limited.

This ultrafine activated titanium dioxide photocatalyst has two characteristics of oxidative decomposition and superhydrophilicity. Due to the property of oxidative degradability, the wallpaper of the present invention is characterized in that the ultrafine titanium dioxide photocatalyst contained in the wallpaper layer easily generates hydroxyl radicals by light sources such as fluorescent lamps or sunlight, and thus, odors and odors in the indoor air of the housing space. Purifies indoor air by decomposing harmful components. In addition, due to the superhydrophilic nature, the wallpaper of the present invention is difficult to attach contaminants to the surface because the hydroxyl radical generated from the ultrafine titanium dioxide photocatalyst contained in the wallpaper layer imparts very good hydrophilicity to the surface of the wallpaper. Even if contaminants adhere, they can be easily washed and kept clean.

The ultra-fine particle titanium dioxide photocatalyst of the present invention can be imparted to any one layer of a multilayered wallpaper such as a conventional polyvinyl chloride-based laminated wallpaper or a laminated wallpaper to impart the above oxidative degradability and superhydrophilicity. In addition, since the specific surface area is contained in a state of very high ultrafine particles, there is no need to change the process of manufacturing a conventional wallpaper separately, the manufacturing workability is excellent, and the construction workability does not differ. In addition, since it is contained in the state of ultra-fine particles of the micro-level or less, embossed patterns and the like can also be produced as it is without changing the conventional wallpaper design.

For this purpose, the ultrafine titanium dioxide photocatalyst of the present invention is contained in any one of the following polyvinyl chloride-based foam laminated wallpaper, or laminated wallpaper. As for content of the ultrafine titanium dioxide contained in each layer, 1-10 weight part is preferable with respect to 100 weight part of solid content of each layer. If the content is less than 1 part by weight, the photocatalytic effect is insufficient. If the content is more than 10 parts by weight, the photocatalytic effect as much as the input amount is not exhibited.

Such wallpaper is made clear from the following example.

The first type is from above

Iii) a functional layer 50 containing a titanium dioxide photocatalyst 1;

Ii) surface treatment layer 40;

Iii) a printed layer 30;

Iii) a polyvinyl chloride foam layer 20; And

Paper (10)

It is a polyvinyl chloride (PVC) -based foam laminated wallpaper comprising a (Fig. 1).

The second type, from above

Iii) a surface treatment layer 40;

Ii) printed layer 30;

Iii) a polyvinyl chloride foam layer 20;

Iii) a sheet of paper 10; And

Iii) a functional layer 50 containing a titanium dioxide photocatalyst 1

It is a polyvinyl chloride-based foam laminated wallpaper comprising a (Fig. 2).

The third type is from above

Vi) a surface treatment layer 40 containing a titanium dioxide photocatalyst 1;

Ii) a printing layer 30 containing a titanium dioxide photocatalyst 1;

Iii) a polyvinyl chloride foam layer 20; And

Paper (10)

It is a polyvinyl chloride-based foam laminated wallpaper comprising a (Fig. 3).

The fourth type is from above

Vi) a surface treatment layer 40 containing a titanium dioxide photocatalyst 1;

Ii) printed layer 30;

V) upper layer 60;

V) an adhesive layer 70 containing a titanium dioxide photocatalyst 1; And

Paper (10)

It is a laminated wallpaper including a (Fig. 4).

The method for producing the polyvinyl chloride-based foam laminated wallpaper and the laminated wallpaper is as follows.

Basic method of manufacturing a polyvinyl chloride-based foam laminated wallpaper, as shown in Figure 6, first to form a polyvinyl chloride foam layer 20 on the base paper 10, then gelled and foamed and then cooled, the print layer thereon 30 is formed, and the surface treatment layer 40 is formed thereon, followed by drying. Then, the functional layer 50 is formed thereon, and then gelled and dried to prepare a laminated wallpaper. The manufactured wallpaper is then embossed and cooled to complete the final product.

Here, the laminated form of each layer from the base paper other than the basic manufacturing method is manufactured by changing the order according to the three types of the said foamed wallpaper, and in addition to said three types, at least one layer of each of the present invention It can contain a fine titanium dioxide photocatalyst.

Hereinafter, the respective layers of the polyvinyl chloride-based foam laminated wallpaper will be described in more detail.

The base paper 10 is a paper base paper typically used for foam wallpaper.

The polyvinyl chloride foam layer 20 is 100 parts by weight of a vinyl chloride resin having a polymerization degree of 500 to 1500

a) 65 to 75 parts by weight of dioctylphthalate as a primary plasticizer;

b) 1 to 5 parts by weight of azodicarbonamide as a blowing agent;

c) 1 to 4 parts by weight of the zinc compound which is a foam accelerator;

d) 0.1 to 3 parts by weight of a barium-zinc compound which is a foam stabilizer;

e) 6 to 8 parts by weight of titanium dioxide as a pigment; And

f) 50 to 60 parts by weight of calcium bicarbonate as filler

After coating a liquid composition comprising a 0.3 to 0.5 mm thickness and heated to gelation and foaming to form a polyvinyl chloride foam layer 20 is a solid composition. The viscosity of the liquid composition is preferably a sol state of 5000 ± 500 cps, the heating is preferably carried out for 20 to 40 seconds at a feed rate of 40 to 60 m / min at a temperature of 200 to 220 ℃.

In addition, the printing layer 30 may be printed on the polyvinyl chloride foam layer 20 by gravure printing, offset-printing, or screen printing to form the printing layer 30. will be.

In addition, the surface treatment layer 40 is formed by gravure coating or screen coating the acrylic copolymer composition.

In addition, the functional layer 50 containing the titanium dioxide photocatalyst 1 is a copolymer selected from two or more kinds of polyalkyl methacrylates, polyacrylates, vinyl chlorides, and vinyl acetates, each having a content of 1 to 99% by weight. 100 parts by weight of the composite, and 1 to 10 parts by weight of a titanium dioxide photocatalyst having a size of 0.01 to 100 nm, and when the layer is formed, it is coated by a method of gravure coating, air knife coating, sponge roll coating, or reverse roll coating. Heat and gel. In addition, the coating thickness is preferably 0.01 to 0.05 mm, heating is preferably carried out for 1 to 5 seconds at a temperature of 80 to 130 ℃ at a feed rate of 40 to 60 m / min.

In addition, in the embossing process, the laminated foam wallpaper is heated at 180 to 220 ° C. for 20 to 40 seconds, and then embossed and cooled to complete the final product.

Specifically, as shown in Fig. 7, the basic manufacturing method of the laminated wallpaper, the base paper, the base paper is released from the paper take-up roller is moved to the adhesive roller to apply the adhesive on the base paper 10, the adhesive layer 70 ). At this time, the adhesive layer 70 is added to the ultra-fine titanium dioxide photocatalyst (1) by about 1 to 10% by weight to an acrylic adhesive having a solid content of 40% by weight ± 5, viscosity 3000 cps ± 500 so that the dispersion is good. In addition, after the upper layer 60 is laminated on the adhesive layer 70, a printed layer 30 is formed and a functional layer 50 is formed thereon.

In addition, the upper limb of the upper layer may use the same one as the original paper, and other types may be used as necessary.

More specifically, the embossing is to transfer the pattern of the upper forming roller to the lower forming roller made of paper, and then embossed by passing between the upper forming roller and the lower forming roller, and then drying with hot air at 100 to 150 ° C.

The present invention will be described in more detail with reference to the following examples and comparative examples. However, an Example is for illustrating this invention and is not limited only to these.

EXAMPLE

Example 1

(Formation of Polyvinyl Chloride Foam Layer 20)

65 to 75 parts by weight of a primary plasticizer, dioctylphthalate, 1 to 5 parts by weight of azodicarbonamide, a foaming agent, and 1 to 4 parts by weight of zinc compound, a foaming accelerator, on 100 parts by weight of a vinyl chloride resin having a polymerization degree of 500 to 1500 on a base paper. The liquid composition of the polyvinyl chloride foam layer containing 0.1 to 3 parts by weight of the barium-zinc compound as the foaming stabilizer, 6 to 8 parts by weight of the titanium dioxide as the pigment, and 50 to 60 parts by weight of the calcium bicarbonate as the filler was cut to a thickness of 0.3 mm. Coated. The gel was heated and gelled at a rate of 40 m / min at a temperature of 210 ° C. for 40 seconds, followed by foaming to form a polyvinyl chloride foam layer by cooling the liquid composition.

(Print layer 30 formed)

A predetermined pattern was printed on the polyvinyl chloride foam layer by gravure printing to form a printed layer.

(Surface Treatment Layer 40 Formation)

The surface treatment layer was formed on the printed layer by a gravure printing coating method.

(Functional layer 50 formation)

Titanium dioxide by adding 10 parts by weight of finely divided titanium dioxide photocatalyst at 0.01 to 100 nm to 100 parts by weight of a copolymer composite containing 50% by weight of poly alkyl methacrylate and 50% by weight of poly acrylate on the surface treatment layer. The composite composition including the photocatalyst was coated to a thickness of 0.02 mm by a gravure coating method and then gelled by heating to 130 ° C. at a speed of 40 m / min to form a functional layer.

(Preparation of Functional Polyvinyl Chloride Foam Laminated Wallpaper; Fig. 1)

A functional polyvinyl chloride foam laminated wallpaper prepared as described above, including a functional layer, a surface treatment layer, a printing layer, a polyvinyl chloride foam layer, and a base paper, is heated at 200 ° C. for 20 seconds, followed by an embossing process, and a cooling process. The functional polyvinyl chloride wallpaper containing the final titanium dioxide photocatalyst was prepared through.

Example 2

(Functional layer 50 formation)

Titanium dioxide photocatalyst was included by adding 10 parts by weight of finely divided titanium dioxide photocatalyst at 0.01 to 100 nm to a copolymer composite containing 50% by weight of polyalkyl methacrylate and 50% by weight of vinyl acetate on the lower back of the base paper. The composite composition was coated with a gravure coating method to a thickness of 0.02 mm and then gelled by heating to 130 ° C. at a speed of 40 m / min to form a functional layer.

(Formation of polyvinyl chloride foam layer 20)

65 to 75 parts by weight of a primary plasticizer, dioctylphthalate, 1 to 5 parts by weight of azodicarbonamide, a foaming agent, and a zinc compound as a foaming accelerator. 0.3 parts by weight of the polyvinyl chloride foam layer comprising 4 to 4 parts by weight, 0.1 to 3 parts by weight of a barium-zinc compound as a foam stabilizer, 6 to 8 parts by weight of titanium dioxide as a pigment, and 50 to 60 parts by weight of calcium bicarbonate as a filler. Knife coating to a thickness of mm. The gel was heated and gelled at a rate of 40 m / min at a temperature of 210 ° C. for 40 seconds, followed by foaming to form a polyvinyl chloride foam layer by cooling the liquid composition.

(Print layer 30 formed)

A predetermined pattern was printed on the polyvinyl chloride foam layer by gravure printing to form a printed layer.

(Surface Treatment Layer 40 Formation)

The surface treatment layer was formed on the printed layer by a gravure coating method.

(Preparation of functional polyvinyl chloride wallpaper; Fig. 2)

A functional polyvinyl chloride wallpaper prepared as above and including a surface treatment layer, a printing layer, a polyvinyl chloride foam layer, a base paper, and a functional layer is heated at 200 ° C. for 20 seconds and then embossed and cooled. A functional polyvinyl chloride wallpaper was prepared containing the final titanium dioxide photocatalyst.

Example 3

(Formation of Polyvinyl Chloride Foam Layer 20)

65 to 75 parts by weight of a primary plasticizer, dioctylphthalate, 1 to 5 parts by weight of azodicarbonamide, a foaming agent, and 1 to 4 parts by weight of zinc compound, a foaming accelerator, on 100 parts by weight of a vinyl chloride resin having a polymerization degree of 500 to 1500 on a base paper. The liquid composition of the polyvinyl chloride foam layer containing 0.1 to 3 parts by weight of the barium-zinc compound as the foaming stabilizer, 6 to 8 parts by weight of the titanium dioxide as the pigment, and 50 to 60 parts by weight of the calcium bicarbonate as the filler was cut to a thickness of 0.3 mm. Coated. The gel was heated and gelled at a rate of 40 m / min at a temperature of 210 ° C. for 40 seconds, followed by foaming to form a polyvinyl chloride foam layer by cooling the liquid composition.

(Formation of printing layer 30 containing titanium dioxide)

The print layer was formed by printing a pattern on the polyvinyl chloride foam layer by gravure printing. At this time, 1 to 10 parts by weight of finely ground titanium dioxide photocatalyst at 0.01 to 100 nm is added to the polyalkyl methacrylate, poly acrylate, vinyl chloride, and vinyl acetate copolymer composite in the form of a printed pattern at the upper limit of the printing layer. The composite composition containing a titanium dioxide photocatalyst was coated to a thickness of 0.02 mm, and then gelled by heating to 130 ° C. at a speed of 40 m / min to form a printed layer containing a titanium dioxide photocatalyst.

(Formation of Surface Treatment Layer 40 Containing Titanium Dioxide)

A composite composition containing a titanium dioxide photocatalyst (50 parts by weight of an oil based acrylic + 50 parts by weight of vinyl acetate) was formed on the print layer by gravure printing to form a surface treatment layer.

(Preparation of functional polyvinyl chloride wallpaper; FIG. 3)

The functional polyvinyl chloride wallpaper prepared as above and including the surface treatment layer, the printing layer, the polyvinyl chloride foam layer, and the base layer is heated at 200 ° C. for 20 seconds, then embossed, cooled, and finished. Functional polyvinyl chloride wallpaper containing a titanium dioxide photocatalyst was prepared.

Example 4

(Manufacture of laminated wallpaper; Fig. 4)

The paper is released from the take-up roller and moved to the adhesive roller. The adhesive layer is formed by applying an adhesive composition containing 10% by weight of titanium dioxide photocatalyst to an aqueous acrylic adhesive having a solid content of 40% ± and a viscosity of 3000 cps ± 500 on the base paper. I was.

Titanium dioxide photocatalyst 1 is laminated on the adhesive layer and a printed layer is formed on the upper layer, wherein 100 parts by weight of a copolymer composite containing 50% by weight of polyalkyl methacrylate and 50% by weight of poly acrylate is used. The composite composition including 10 to 10 parts by weight was coated to a thickness of 0.02 mm to form a functional layer 50.

The functional layer transfers the pattern of the upper forming roller to the lower forming roller made of paper, passes through the upper forming roller and the lower forming roller, and then embosses it, and then dryes it with hot air at 100 ° C. to form a functional laminated wallpaper containing titanium dioxide photocatalyst. Was prepared (FIG. 4).

Comparative Example 1

Except for the functional layer was carried out in the same manner as in Example 1 to prepare a general polyvinyl chloride foam wallpaper consisting of a surface treatment layer, a printing layer, a polyvinyl chloride foam layer, and a base paper (Fig. 5).

Using the functional polyvinyl chloride wallpaper containing the titanium dioxide photocatalyst prepared in Example 1 and the general polyvinyl chloride wallpaper prepared in Comparative Example 1 to measure the organic decomposition, antibacterial and deodorizing effect by the following method The results are shown in Table 1 below.

A) organic matter decomposition effect: in order to compare the photocatalytic effect of the product of Example 1 and Comparative Example 1 irradiated with 1 1 / ㎠ under the same conditions, the product of Example 1 and Comparative Example 1 buried iodine After about 4 hours, the mixture was washed with water to be uniformly contaminated, and then irradiated with 1 ㎽ / cm 2 of ultraviolet rays to visually determine the degree of discoloration. The greater the degree of discoloration of iodine tincture, the better the decomposition of organic matter.

B) antimicrobial effect: in order to compare the photocatalytic effect of the product of Example 1 and Comparative Example 1 irradiated with ultraviolet light of 1 ㎽ / ㎠ under the same conditions, and then inoculated the product of Example 1 and Comparative Example 1 to the test bacteria After a certain amount of the inoculum was adhered between the specimen and the specimen, the cultured bacteria were extracted, and the number of bacteria present in the extract was measured by pressure adhesion method comparing the bacterial reduction rate.

-Number of bacteria used disclosure: E. coli

Incubation: After incubation for 24 hours at 25 ℃

Specimen: 10 × 10 cm, N number = 3 pairs

C) Deodorizing effect: In order to compare the photocatalytic effect of the product of Example 1 and Comparative Example 1 irradiated with ultraviolet light of 1 ㎽ / ㎠ under the same conditions, the product of Example 1 and Comparative Example 1 KICM-FIR- It was measured using ammonia gas according to 1004.

division Example 1 Comparative Example 1 Degradation Effect of Organic Matter (Decolorization of Iodine Tincture) Almost bleach A little discoloration Antibacterial test (bacteria reduction rate) 90% 15% Deodorization rate after 300 minutes (%) 50% 30%

Through Table 1, it was confirmed that the functional polyvinyl chloride wallpaper of Example 1 containing a titanium dioxide photocatalyst has an excellent effect than the general polyvinyl chloride wallpaper of Comparative Example 1 in organic matter decomposition function, antibacterial function, and deodorizing effect Could.

Comparative Example 2

Table 1 shows the results of testing Example 1 and Comparative Example 2 with the same test conditions and items mentioned above in wallpaper containing titanium dioxide at a micron level.

division Example 1 Comparative Example 2 Degradation Effect of Organic Matter (Decolorization of Iodine Tincture) Almost bleach A little discoloration Antibacterial test (bacteria reduction rate) 90% 16% Deodorization rate after 300 minutes (%) 50% 32%

Through Table 2, the polyvinyl chloride wallpaper containing the titanium dioxide of the micron level of Comparative Example 2 in the functional polyvinyl chloride wallpaper of Example 1 containing a titanium dioxide photocatalyst in organic matter decomposition function, antibacterial function and deodorizing effect It can be confirmed that there is a better effect, and the unique design pattern of the wallpaper surface was somewhat cloudy, and the design expression was limited.

The functional wallpaper containing the titanium dioxide photocatalyst of the present invention has a very beneficial effect on human health by having an antibacterial function, organic matter decomposition function, odor and odor removal function, which are inherent functions of the photocatalyst, from the simple wall finishing function of the conventional wallpaper.

In addition, the functional wallpaper containing the titanium dioxide photocatalyst of the present invention increases the specific surface area by adding a titanium dioxide photocatalyst having a particle size of several nanometers (nm), and maximizes the catalytic activity, and the unique appearance design of the wallpaper by a thin film coating printing method. The effect can be maintained as it is.

Claims (6)

A wallpaper having a multi-layered structure, comprising a titanium dioxide photocatalyst having a size of 0.1 to 100 nm in one or more layers in an amount of 1 to 10 parts by weight based on 100 parts by weight of solids in the layer. delete The method of claim 1, The wallpaper from above Iii) a functional layer containing a titanium dioxide photocatalyst; Ii) a surface treatment layer; Iii) a printed layer; Iii) a polyvinyl chloride foam layer; And Iii) original paper Wallpaper which is a polyvinyl chloride-based foam laminated wallpaper comprising a. The method of claim 1, The wallpaper from above Iii) a surface treatment layer; Ii) a printed layer; Iii) a polyvinyl chloride foam layer; Iii) original paper; And Iii) a functional layer containing a titanium dioxide photocatalyst Wallpaper which is a polyvinyl chloride-based foam laminated wallpaper comprising a. The method of claim 1, The wallpaper from above Iii) a surface treatment layer containing a titanium dioxide photocatalyst; Ii) a printing layer containing a titanium dioxide photocatalyst; Iii) a polyvinyl chloride foam layer; And Iii) original paper Wallpaper which is a polyvinyl chloride-based foam laminated wallpaper comprising a. The method of claim 1, The wallpaper from above Iii) a functional layer containing a titanium dioxide photocatalyst; Ii) a printed layer; Iii) an upper layer; Iii) an adhesive layer containing a titanium dioxide photocatalyst; And Iii) original paper Wallpaper that is a laminated wallpaper comprising a.