JPS61146882A - Decorative sheet - Google Patents

Abstract

PURPOSE:To obtain a decorative sheet having a brightly produced latent pattern, by applying thermoplastic synthetic resin compositions having different colors and/or presence of a foaming agent in a pattern to a sheetlike material, and removing physically the film surface of the above-mentioned resin compositions. CONSTITUTION:A decorative sheet obtained by applying thermoplastic synthetic resin compositions, having different colors and/or amount and presence of a foaming agent, and consisting essentially of polyvinyl chloride, etc. to a sheetlike material, e.g. paper or woven or knitted fabric, in the form of a pattern by the screen coating method, expanding the resultant sheet under heating to give a foam sheet consisting of the above-mentioned compositions having different colors and/or expansion densities, and removing the surface of the composition films by a means of slicing or buffing, etc., to produce brightly the latent pattern. The pattern obtained by the above-mentioned method is very clear without disappearing even by abrasion.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a decorative sheet, and more particularly to a decorative sheet in which a pattern is revealed by removing at least a portion of the surface by physical means such as cutting or slicing. BACKGROUND ART Suede-like sheets have conventionally been produced by removing the surface of a porous thermoplastic synthetic resin sheet by a method such as nodding or slicing to reveal a porous layer, and are used for clothing, binding, and interior rings. The suede-like sheet is flexible and has a good feel, making it indispensable for the above-mentioned uses, but because it is monochromatic or has uniform pores, it is monotonous and lacks attractiveness. As a means to overcome the above-mentioned drawbacks, it is possible and actually practiced to pattern the surface using gravure, a screen, etc. However, when printing on a porous material, it is difficult for printing ink to be applied due to the surface characteristics of the porous material, and the interface between colors becomes unclear, resulting in a blurred pattern. In addition, the printing ink penetrates, resulting in a hard texture and poor flexibility and texture. To avoid hardening of the texture, one option is to use a more flexible printing ink vehicle, but this leaves a sticky surface. There are also other problems, such as the printing ink being worn away during use and the pattern disappearing.

An object of the present invention is to provide a novel decorative sheet with an extremely clear pattern and which does not disappear even when worn.

As a result of intensive research in order to achieve the above object, the inventors of the present invention discovered that thermoplastic synthetic resin compositions with different colors and/or foaming densities are hidden in a pattern inside a sheet material in advance. discovered that when the surface was removed by physical means, a very clear pattern appeared at the interface, which led to the completion of the present invention. That is, the present invention provides a decorative sheet in which at least a portion of the surface is physically removed to reveal a latent pattern, and the thermoplastic synthetic resin composition portion in which the pattern differs in color and/or foam density. This is a decorative sheet specially designed to be made up of In the present invention, non-foamed compositions are also included in the thermoplastic synthetic resin compositions having different foam densities.

The decorative sheet of the present invention is usually one in which a pattern made of a thermoplastic synthetic resin composition is provided on a base material such as paper, textile, nonwoven fabric, film, etc., but the pattern is created by removing at least a part of the surface. After being taken out, the base material may be removed by slicing or the like.

The pattern of the present invention includes at least two parts having different colors and/or foaming densities, but there may be as many parts as possible.

The thermoplastic synthetic resin composition constituting the pattern of the decorative sheet of the present invention is preferably porous. The porous material makes the sheet flexible and gives it a good feel, and improves the grinding and slicing properties when removing the top surface.

Further, it is desirable that the main components of each thermoplastic synthetic resin composition constituting the pattern be the same type of resin. When they are of the same type, the adhesion between each group of acid materials is good and the pattern is continuous.

The thermoplastic synthetic resin composition constituting the pattern of the decorative sheet of the present invention includes vinyl chloride polymer, vinyl chloride, ♂yl acetate copolymer, ethylene, vinyl acetate copolymer, acrylate ester polymer, diethylene, Polypropylene, polyurethane, synthetic TM.

Natural TM and mixtures thereof can be used, and pigments, fillers, plasticizers, heat stabilizers, flame retardants, anti-aging agents, etc. can be used depending on the purpose.
Blending blowing agents, thickeners, UV inhibitors, grindability improvers, etc.@ The method of making thermoplastic synthetic resin into porous bodies in the present invention includes, for example, azosicazenamide, oxybisbenzenesulfonylhydride 2 A method of mixing a foaming agent into a thermoplastic synthetic resin composition and heating it, a method of mixing and heating microcapsules that foam when heated, a method of mechanically mixing air into a liquid thermoplastic synthetic resin composition and directly solidifying it. etc. Further, the foaming density of the composition can be controlled by adjusting the amount of foaming agent, the amount of microcapsules, the amount of air mixed in, etc.

The method of applying the thermoplastic synthetic resin composition in the present invention in a pattern can be carried out by any known method such as screen coating, gravure coating, doctor coating, roll coating, spray coating, etc., alone or in combination.

Seat table for revealing latent patterns in the present invention [
The removal can be carried out using a knife machine or a knife machine.

The present invention will be explained in detail below based on examples.

Paint composition table example/Flower pattern part is painted with paint A on wallpaper backing paper (basis weight toyβ)
, the printing machine that printed the floral pattern with the nototsuku parts made of paint B was a rotary screen and the screen roll was 2
A 00μ thick film cylinder roll was used, and the resulting coating film had a thickness of about 100μ.

The above printed sheet was heated to 200°C in a gear oven to a thickness of 0. A foam sheet of r fl was obtained. Next, this foam sheet was knurled using a knuffing device to remove the foam surface. FIG. 1 is a schematic cross-sectional view of the finished product according to this embodiment, and the pattern is composed of a beige highly foamed floral pattern part and a white floral pattern pack part with the same density as the floral pattern part.

Example 1 Paint A was printed in a floral pattern using a rotary screen on wallpaper backing paper with a basis weight of rOf/-, and after pre-gelling, paint C was applied to the entire surface using a doctor knife.

Note that a 200μ thick film cylinder roll was used as the screen roll. The thickness of the coating film obtained was approximately /jOμ.

The sheet obtained as described above was heated and foamed in a gear oven to a temperature of 20"0.
A foam sheet having a thickness of JLLLI+ was obtained.

Next, the surface of the foamed sheet was ground using a nof processing device.

As a result, as shown in Fig. 2, a beige and highly foamed flower peduncle part of the flower peduncle stands out from the shading part j of the same color and low foamed flower pedicel, resulting in a similar floral pattern.

Example 3 A floral pattern was printed on a backing paper for wallpaper with a basis weight of 10 gr/-, with the floral pattern part being coated with paint and the rack part being coated with paint A. A 200μ thick film cylinder roll was used as the screen roll, and the thickness of the resulting coating film was about 100μ.

The above printed sheet was heated to 200° C. in a gear oven to obtain a foamed sheet in which the notock part of Paint A was approximately O, rytx, and the flower pattern part of Paint A was approximately 0.1 Njll.

Next, the foamed sheet was subjected to a notch processing, and the surface of the notched portions made of paint A was removed.

As a result, as shown in the schematic cross-sectional view of FIG. 3, a unique pattern was created in which the white non-foamed floral pattern part 7 was submerged into the beige highly foamed floral pattern part B.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of the foam sheet obtained in Example 1, FIG. 2 is a schematic sectional view of the foam sheet obtained in Example 2, and FIG. 3 is a schematic sectional view of the foam sheet obtained in Example 3. It is a schematic cross-sectional view. l... Flower pattern part (foamed), 2... Flower pattern part (foamed), 3... Base, ≠... Flower pattern part (
High foaming),! ...flower pattern nototsuku part (medium foaming),
6... Flower pattern part (foamed), 7... Flower pattern part (non-foamed). Figure 1 Figure 8 Figure 8

Claims (1)

[Scope of Claims] 1. A decorative sheet formed by physically removing at least a portion of the surface to reveal a latent pattern, in which the pattern has a different color and/or foaming density. A decorative sheet comprising a resin composition part. 2. The decorative sheet according to claim 1, wherein the main components of the thermoplastic synthetic resin composition portions constituting the pattern are made of the same type of resin. 3. The decorative sheet according to claims 1 and 2, wherein at least one of the thermoplastic synthetic resin composition parts is a porous body. 4. The decorative sheet according to claims 1, 2 and 3, wherein the thermoplastic synthetic resin composition is mainly composed of polyvinyl chloride.