JP2002275429A - Method for forming marble pattern and the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for imparting excellent decorative patterns such as rift patterns, marble patterns and the like on all enameled wares and chinawares regardless of form and size, at a reduced cost and with simple work. SOLUTION: This method comprises spraying a compounded coating prepared by dispersing frit particles and/or inorganic pigment particles in a resin binder comprising a volatile solvent and a nonvolatile polymer on the surface of an enameled ware or a chinaware and then baking the coated product. Particulate stone patterns can be formed by adjusting the viscosity of the mixture by increasing the compounding amount of the polymer based on the solvent. Generally, by increasing the viscosity of the mixture or by making the distance between a spray gun and an object to be coated remote, cobweb patterns can be formed and, by decreasing the viscosity of the mixture or by making the distance between the spray gun and the object to be coated closer, dot patterns can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a pattern having excellent decorativeness, for example, a stone pattern, a marble pattern, etc., on the surface of an enameled product or a ceramic product. ).

[0002]

2. Description of the Related Art Conventionally, to apply a marble pattern or the like to an enameled product or a ceramic product, a method using a transfer paper, a method by screen printing, a method of applying a glaze, spraying, spraying, applying a pattern, etc. Various methods have been proposed or implemented. However, each method has advantages and disadvantages.

[0003] For example, the transfer paper method is the most common method, which has good decorativeness and reproducibility. It is difficult to apply to large products due to limitations.
The screen method, like the transfer paper method, has limitations on the size of the product, and also has problems in the cost and labor of the screen used. The method of applying a glaze, spraying, and applying a pattern using a sprayer has not been widely used due to complicated operations, lack of reproducibility, low adaptability to shapes, poor decorativeness, and the like.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a pattern having excellent decorativeness, such as a stone pattern or a marble pattern, at a low cost and with a simple operation. It is an object of the present invention to provide a method which can be applied to any enamel and porcelain regardless of shape, size and size.

[0005]

SUMMARY OF THE INVENTION A method for forming a marble pattern or the like according to the present invention is directed to a compound paint comprising frit particles and / or inorganic pigment particles dispersed in a resin binder comprising a volatile solvent and a non-volatile polymer. To
This method comprises spraying an enamel surface or a ceramic surface and then baking the coating.

According to the present invention, when a mixture of a volatile solvent and a non-volatile polymer is spray-coated on a substrate, the solvent in the mixture evaporates before the mixture reaches the substrate, and the polymer in the mixture is coated with the polymer. It utilizes the phenomenon of being applied to an object like a thread or a spider web.

By increasing the amount of the polymer in the solvent and changing the viscosity of the mixture to an appropriate value, a granular stone pattern can be formed. In general, by increasing the viscosity of the mixture, or by increasing the distance between the spray gun and the object to be coated, a web-like pattern can be formed, by decreasing the viscosity of the mixture,
Alternatively, a point-like pattern can be formed by reducing the distance between the spray gun and the object to be coated.

A compound paint is prepared by adding frit particles and inorganic pigment particles to a resin binder comprising a mixture of a volatile solvent and a non-volatile polymer. When this compound paint is spray-applied to an object to be coated, the solvent volatilizes as described above, and the remaining compound components, polymer, frit particles and inorganic pigment particles, are applied to the object to be coated in a thread, spider web, or granular form. You. The layer thickness of the pattern formed by spraying may be about 1 to 10 μm.

When the filamentous, spider web-like and granular residual compound components thus applied are calcined in the same manner as in the case of ordinary enameled products or ceramic products, the polymer becomes 50%.
Decomposed at a temperature around 0 ° C, frit particles and inorganic pigment particles remain on the coated surface, and are baked on the enamel surface or porcelain surface in the subsequent baking, and the filaments, spider webs and granules found in marbled products after baking Are obtained.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The volatile solvent used in the present invention is not limited as long as it dissolves a non-volatile polymer and has a low boiling point. For example, hexane, cyclohexane, butyl acetate, methyl methacrylate, benzene, toluene, ethyl acetate, or a mixture thereof is preferable. In particular, those containing 80% or more of methyl methacrylate are preferred.

[0011] The non-volatile polymer is not limited as long as it is soluble in a volatile solvent. For example, homopolymers of (meth) acrylates such as polystyrene, polyethylene, polyvinyl acetate, and methyl methacrylate;
Copolymers of (meth) acrylic acid esters with α, β-ethylenically unsaturated compounds, polyfunctional (meth) acrylic acid esters and the like can be mentioned. Particularly, a polymer containing 80% or more of a methyl methacrylate unit is preferable.

The molecular weight of the non-volatile polymer is preferably 1
10,000 to 5 million.

The mixing ratio between the volatile solvent and the non-volatile polymer varies depending on the molecular weight of the polymer, but is preferably 85 to 50% by weight of the solvent and 15 to 50% by weight of the polymer.

Frit particles added to the resin binder,
The inorganic pigment particles may be general-purpose products used in enamel products and ceramic products. The amount of the frit particles is preferably 5 to 5 parts by weight based on 95 to 50 parts by weight of the resin binder.
0 parts by weight. Inorganic pigments are used to impart a coloring effect, and their amount is preferably not more than 20% by weight in the compound paint.

[0015] Fillers, defoamers, leveling improvers, viscosity modifiers and the like can be added to the compound paint as in the case of ordinary paints.

Next, the present invention will be described specifically with reference to examples.

Example 1 A methacrylic acid methyl ester polymer (molecular weight: 100,000) was added to 75 parts by weight of methacrylic acid methyl ester monomer.
The resin binder A was prepared by dissolving parts by weight. To 85 parts by weight of resin binder A, 15 parts by weight of titanium milk frit powder (average particle size: 10 μm) for enamel was mixed,
Compound paint A was prepared.

The compound paint A was applied on a test steel plate baked with enamel using a spray gun. The paint A adhered in a spider web shape by spraying. When the object to be coated was baked under the usual baking conditions of enamel, a white spider-like, thread-like and spot-like marble pattern was obtained as shown in the photograph of FIG.

When the distance between the gun and the object to be coated was reduced, the sprayed pattern changed from a spider web to a thread and a spot.

Comparative Example 1 Gray enamel glaze was applied on a black test plate on which enamel was previously baked in a spot-like manner by squeezing the spray air of a spray gun. When the coated object was dried and baked, a spot pattern of ash was obtained on a black background as shown in the photograph of FIG.

[Brief description of the drawings]

FIG. 1 is a photograph showing a steel plate having a marble pattern obtained in Example 1.

FIG. 2 is a photograph showing a steel sheet having a spotted ash pattern on a black background obtained in Comparative Example 1.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C23D 13/00 C23D 13/00 B (72) Inventor Naotochi Iwata 591 Yokouchi, Komaki City, Aichi Prefecture Nippon Fellowe Co., Ltd. Inside the Komaki Plant (72) Inventor Toshihei Hamada 2-1-27 Oyodo-kita, Kita-ku, Osaka F-term in Japan Ferro Corporation (reference) 4J038 CB021 CC031 CF021 CG141 CG151 CH031 HA486 JA02 JA05 KA06 KA08 NA01 PA19 PC03

Claims (3)

[Claims] 1. A compound paint obtained by dispersing frit particles and / or inorganic pigment particles in a resin binder comprising a volatile solvent and a non-volatile polymer, is sprayed on an enamel surface or a ceramic surface, A method of forming a marble pattern or the like, characterized by baking. 2. An enameled product or ceramic product having a marble pattern or the like, obtained by the method according to claim 1. 3. A paint used in a method for forming a marble pattern or the like on an enamel surface or a ceramic surface, wherein frit particles and / or pigment particles are dispersed in a resin binder composed of a volatile solvent and a non-volatile polymer. Compound paint