JPH0811879B2 - Wallpaper with little bleeding and method for producing the wallpaper - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wallpaper for building interior. More specifically, it relates to a wallpaper having a laminated structure in which a decorative covering material and a backing paper are laminated.

[0002]

2. Description of the Related Art Among wallpaper, a wallpaper made of a porous material such as a fiber woven fabric or Japanese paper as a decoration material for the front surface is used as a water-based adhesive due to the water content in the adhesive used for attaching it to a wall. Even after being dried, there was a drawback that the water-soluble matter exudes from the wall body to the surface of the wall covering material with water as a medium by the respiration of water between the room and the wall body, thereby forming dirt on the wall surface.

[0003]

For the purpose of remedying this drawback, for example, a method of plasticizing a backing paper and laminating it with a cover material (Japanese Patent Laid-Open No. 61-215792), or a cover material and a backing paper. A cloth with an impermeable film sandwiched between and adhered (Japanese Utility Model Publication No. 64-7300)
and so on.

However, in these manufacturing methods, the surface covering material and the backing paper are not simply laminated with an adhesive, but are laminated.
Still another step is required. An object of the present invention is to develop a wallpaper with a simple construction method and less bleeding, and a method for producing the wallpaper.

[0005]

The inventors of the present invention have studied the prevention of the movement of water through the wallpaper and the simplification of the process, and as a result, the laminated adhesion of the covering material 1 and the backing paper 2 and the non-adhesiveness of water. As a method of simultaneously forming the permeable layer, a method of dispersing and adhering the wax 4 in the adhesive 3 was invented, and the result was obtained that this method was simple and effective.

Waxes are known to give water repellency in the processing of paper. For example, waxes are water repellent in P589 to 590 of the latest paper processing manual (August 1988, issued by Tech Times Co., Ltd.). Various waxes have been introduced as agents. It is well known that the surface coated with wax repels water, but has a negative effect on adhesion.

However, according to the experiments conducted by the present inventors, it has been found that even if wax is mixed in the adhesive, it does not adversely affect the adhesion while preventing the permeation of water. The wax used here is a natural or synthetic wax which is solid at room temperature and is preferably dispersed in water, but paraffin wax, polyethylene wax and the like can be mentioned.

As the adhesive, a vinyl acetate emulsion, an acrylic ester emulsion, or a copolymer emulsion of these or an emulsion emulsion copolymer of ethylene and styrene can be used. For example, the paraffin wax 4 and the adhesive 3 can be mixed by ordinary mechanical dispersion when the wax is dispersed in water. Such water-dispersed waxes are commercially available. When starting from a solid wax, it is dispersed in water using a dispersant such as stearate before use.

The mixing ratio of the adhesive 3 and the wax 3 is appropriately 1 to 10% by weight of the wax, preferably 3 to 5% in terms of solid content. If it is less than 1%, the effect is small, and if it exceeds 10%, a negative effect is likely to occur due to adhesiveness and the like.

[0010]

[Function] The wallpaper and the backing material of the wallpaper formed by bonding the backing paper with the surface covering material made of fiber woven fabric or Japanese paper,
Paraffin wax dispersed in the water-based adhesive is dispersed on the entire surface of the wallpaper because the wax is included in the water-based adhesive for adhesion, and water penetration is impeded, and the adhesion between the two is adversely affected. In other words, it was possible to prevent the diffusion of pollutants and obtain a wallpaper with little bleeding on the surface.

[0011]

Example 1 Adhesive, vinyl acetate emulsion XB-3
An aqueous dispersion of paraffin wax (solid content 30%) was dispersed in 270 (manufactured by Toa Paint Co., Ltd., solid content 30%) at a solid content ratio of 3.5% with the adhesive as shown in Table 1.

[0012]

[Table 1] Apply a wax adhesive to the backing paper with a roll coater at about 80 g / m ² and laminate it with the cloth on the decorative surface.
Drum dry dried. Then, the halogen-based flame retardant was further immersed in a 1: 1 diluted solution with water for 2 minutes, taken out, dried at room temperature for 24 hours, dried with an iron at 120 ° C for 2 minutes, and then subjected to the dye penetration test. And

Dye Liquid Penetration Test The flame-retardant laminated product is left in a thermostatic chamber at 20 ° C. for 24 hours, and at 35 ° C. for 2 weeks, and then at 20 ° C.
The test piece was left for 24 hours. Keep the test piece horizontal with the backing paper side up and drop 0.1 ml of red ink on it.
After 30 minutes, 30 minutes, 45 minutes, and 60 minutes, the ink bleeding condition on the decorative cloth surface was observed.

[0014]

[Table 2] As can be seen from Table 1, the effect of adding paraffin wax is remarkable.

[0015]

Example 2 Ethylene Vinyl Acetate Emulsion Adhesive XC = 1964 (manufactured by Toa Paint Co., Ltd., solid content 45%) Paraffin wax emulsion (solid content 30%) was mixed and dispersed at the solid content ratio shown below to bond with wax. Using the agent, two kinds of cloth and two kinds of backing paper were combined and laminated, and a dye solution penetration test was performed.

[0016]

[Table 3] The laminated product was immersed in a halogen-based flame-retardant treatment liquid (thinned with the same weight of water) for 2 minutes, left for 24 hours, and dried by applying an iron at a temperature of about 20 ° C. for 30 seconds.

Dye Liquid Penetration Test A flame-retarded test piece was held horizontally with the backing paper side facing up, 0.1 ml of red ink was dropped, and the state after 24 hours was observed. If the mixing ratio of the wax is increased, the water-resistant adhesive strength tends to decrease, and the mixing ratio of the wax is preferably up to 5%.

[0018]

[Table 4]

From the above results, it is considered that the addition amount of the paraffin wax emulsion is about 1% to the solid content of the adhesive, but 3 to 5% is appropriate. Water-Resistant Adhesion Regarding the water-resistant adhesion that becomes a problem when cutting on-site construction, after laminating the above laminated test piece to a plywood with a size of 80 × 130 mm with a modified vinyl acetate resin adhesive, 2
It was left to dry for 4 hours or more, and a cross cut was added. Next, this test piece was wetted with water, and after 30 seconds and 60 seconds, the cross-cut end was peeled by hand, and the peeling condition was observed.

The peeling conditions and evaluation criteria were as follows.

[Table 5] If the wax mixing ratio is increased, the water-resistant adhesive strength tends to decrease, and it is appropriate that the wax mixing ratio is up to about 5%.

[0021]

EFFECTS OF THE INVENTION The wall surface produced by the method of the present invention and having the wallpaper laminated with the adhesive containing paraffin wax does not cause stain stains even after several years.
It is in very good condition. In addition, the wallpaper of the present invention maintains good workability for a long time in the on-site pasting work, does not generate stains or stains after the construction, and keeps a good condition after 3 to 4 years.

[Brief description of drawings]

FIG. 1 is a perspective view of a wallpaper according to the present invention.

FIG. 2 is an explanatory diagram of its operation.

[Explanation of symbols]

 1 Surface material made of fiber fabric, Japanese paper, etc. 2 Backing paper 3 Water-based adhesive 4 Wax

Claims (3)

[Claims] 1. A wallpaper with less bleeding, which is obtained by bonding a surface material made of fiber woven fabric, Japanese paper, etc. and a backing paper on the back surface thereof with a water-based adhesive containing wax. 2. A method for producing wallpaper with less bleeding, characterized in that, in a wallpaper formed by laminating a surface material and a backing paper, wax is included in an aqueous adhesive to bond the surface material and the backing paper. 3. The method for producing wallpaper as claimed in claim 1, wherein the mixing ratio of the adhesive and the wax is 1 to 10% by weight based on the solid content of the wax.