JPS599673B2 - Wall covering cloth and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wall covering cloth that does not easily fray at cut edges and does not shrink when applied to a wall, and has a surface that retains the feel of a woven fabric.

Conventional wall covering cloths include those made by pasting a paper backing onto a fabric that has not been treated to prevent fraying, and those which are further coated with a fray-preventing resin and cured.

The former has the disadvantage that the cut edges tend to fray, and even when it is pasted on a wall, it easily frays at seams and becomes noticeable, while the latter has the disadvantage of discoloration compared to before the anti-fray treatment. However, when it hardens, the surface becomes flat and loses the feel of a woven fabric, and furthermore, it shrinks when applied to a wall, making it easy to create gaps at seams.

The present invention was made as a result of repeated research on wall covering cloths that do not have the above-mentioned drawbacks.The present invention has been made as a result of repeated research on wall covering cloths that do not have the above-mentioned drawbacks. The back side is a wall covering cloth made by gluing paper to the back side of a fabric to which the resin is evenly adhered; A method of manufacturing a wall covering cloth, which is characterized by bonding paper.

In the wall cloth of the present invention, if the resin attached to the fabric is colored by adding a pigment or the like to the resin, the amount of colored portions appearing on the front surface is less than %, and the back surface is uniform. It is preferable to have an adhesion distribution in which the amount of adhesion is uniformly colored, and in particular, an adhesion state in which some colored areas with an area of 2710 or less appear on the surface is desirable, as it achieves both the effect of preventing fraying of the cut edge and the retention of the texture of the fabric on the surface. preferred from above.

If the appearance of the colored portion on the surface is greater than %, the texture of the fabric will be impaired.

In addition, the attached resin must be a foamed resin, in particular, the resin that has been expanded by incorporating air bubbles to a volume of 2 times or more and 5 times or less of the volume of the mixture that has been mechanically foamed using a stirrer etc. It is preferable that the texture of the fabric is not lost even if the amount of adhesion is large or even if the amount of adhesion on the surface is increased to a certain extent, and the effect of using mechanically foamed resin is further improved. What is important is that the tape does not shrink when attached to the wall, causing gaps at the joints, etc.

The reason why wall covering cloth shrinks when it is pasted on a wall is because the fabric is hardened by the anti-fraying resin and loses its elongation, resulting in an increase in shrinkage stress. When used, an anti-raveling effect can be obtained, and since the extensibility is not significantly lost, the shrinkage stress does not increase beyond the adhesive force with the wall (thus, the above-mentioned effect can be obtained).

In the case of mechanically foamed resin, the air bubbles are dense and it is easy to obtain the desired coating amount gradient from the front surface to the back surface of the fabric, as well as a sufficient fraying prevention effect. On the other hand, with chemical foaming using a foaming agent, the bubbles are coarse and the apparent volume is extremely large, and if the resin is deposited to the point where the fraying prevention effect is sufficient, more resin will be deposited on the surface, which is a desirable deposition amount gradient. Therefore, it is difficult to achieve both the anti-fraying effect and the texture of the fabric on the surface.

The paper is glued to the back of the fabric, which has been cured with an anti-fray resin, in order to make it easier to stick to the wall and to prevent it from peeling off, similar to conventional wall covering cloth.

In the present invention, hydrophobic resins such as acrylic resins, urethane resins, vinyl acetate resins, vinyl chloride resins, and melamine resins are used as resins that are attached to textiles to prevent fraying, and among them, acrylic resins that exhibit elastic properties are used. ,
Urethane resin is preferred.

The amount of resin adhered varies depending on the thread used and structure of the fabric, but it is usually 30? /rrl or more and 100S'/m or less, preferably 60? /m'' or more and 801/trl or less is an appropriate amount to retain the texture of the fabric on the surface and obtain a sufficient fraying prevention effect.

Here, the amount of adhesion is the amount of effective resin solid content; if it is too small, the anti-raveling effect will be weakened, and if it is too large, the amount of adhesion on the surface will increase and the texture of the fabric will be lost.

Known adhesives can be used to adhere paper to the cured back side of the fabric, but adhesives based on vinyl acetate resin are preferred in terms of cost and durability.

Next, in the method for manufacturing wall covering cloth of the present invention, the knife bed method of coating with resin involves placing a doctor knife facing an elastic bed, and compressing the fabric between the tip of the doctor knife and the bed surface. Pass the fabric between the two in such a way that it is received by the doctor.
This is a method in which a paste-like resin liquid is applied and coated onto the fabric on the fabric entry side of the knife.

By adopting such a method, the resin is well rubbed into the inside of the fabric, and since the fabric surface that is in contact with the bed surface is pressed and sealed by the elastic bed surface, the resin does not adhere. This makes it possible to easily obtain the preferable resin coating amount gradient mentioned above.

Natural rubber on a hard base surface for an elastic bed.
A sponge made of synthetic rubber, synthetic resin, etc. is preferably used.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 1 is a cross-sectional view schematically showing the structure of the wall covering cloth of the present invention, in which there is little mechanically foamed resin 3 on the surface of the fabric, which is made up of warp yarns 1 and weft yarns 2, to prevent fraying, and inside. Gradually, more and more particles are attached to the back surface, and on the back side, it is attached all over the surface.

Due to the adhesion of such resin, the surface of the fabric retains its texture while the back surface is hardened.

A paper 5 is attached to the back side of this fabric using an adhesive 4.

FIG. 2 is a schematic side view showing an example of the manufacturing method of the present invention, in which the fabric 6 is squeezed between the tip of a doctor knife I and an elastic bed with a sponge 8 attached thereto. The resin liquid 3', which has been mechanically foamed, is coated from the side facing the doctor knife.

10 is a bed base having a hard base surface.

The coated fabric is baked by passing through a heating device 9, and then an adhesive solution 4' is applied to the coated surface of the resin solution 3', and then a paper 5 is applied to the coated surface.
is pasted to obtain wall covering cloth 12.

In the figure, 11 is a guide roller, 13 is a doctor knife for applying adhesive liquid, 14 is a coating bed, 15 is a presser, and 16 is a heating device for solidifying the adhesive.

The manufacturing method of the present invention is not limited to the embodiment shown in the drawings, and the process of applying an anti-raveling resin and the process of gluing paper may be separated, or the method of applying adhesive in the process of gluing paper may be changed to another method. It is also possible to use a known method, use a roller instead of a presser, or use a presser to heat the adhesive to solidify it.

Next, embodiments of the present invention will be described.

Example: Fabric weight 3 using design yarn of rayon spun yarn as warp and weft
A wall covering cloth was made using a plain woven fabric of 00P/mj in the same manner as shown in the second figure.

In that case, the resin liquid 3' is an acrylic emulsion (active ingredient: 100 parts, 45%), ammonium stearate, 8 parts, CMC (
Using a mixture of 10 parts (5% aqueous solution) and foaming it to 3 times the original amount using a stirrer, the amount of the resin liquid adhered after coating was 200? /m.

The baking conditions were 150°C for 2 minutes, and the surface of the fabric after baking had about 20% of the resin adhesion area, giving it a texture similar to that of dough, while the back surface was hardened with appropriate elasticity due to the resin adhesion on the entire surface. there were.

Further, as the paper adhesive, a 40% solution of the active ingredient of vinyl acetate emulsion was used.

The surface of the resulting wall covering cloth has a fabric texture and is excellent to the touch, and the cut edges do not easily fray, making it easy to handle. Excellent results were obtained in that there was no bulge caused by this, and no gaps caused by shrinkage.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view schematically showing the structure of the wall covering cloth of the present invention, and FIG. 2 is a schematic side view showing an example of the manufacturing method of the present invention. 1: warp, 2: weft, 3: resin, 4: adhesive, 5: paper,
6: Fabric, 7.13: Doctor knife, 8: Sponge, 9, 16: Heating device, 10: Bed base, 11: Guide roller, 12: Wall covering cloth, 14: Coating bed,
15: Pretzer.

Claims (1)

[Scope of Claims] 1. Paper is adhered to the back side of the fabric, where more resin is attached to the back side than the front side, and the front side retains the texture of the fabric, and the back side is coated with the resin uniformly. A wall covering cloth made of 2. A method for producing a wall covering cloth, which comprises coating one side of the fabric with resin using a knife bed method, baking it, and then bonding paper to the one side.