JPS60193688A - Manufacture of painted object with stereoscopic multicolor pattern - Google Patents

Abstract

PURPOSE:To manufacture a natural-looking and soft-feeling painted object by forming a coloring paint using a medium mainly composed of an organic solvent having a special solubility into a patterned coat with a special thickness, then building up another patterned coat of water coloring paint of different color which corresponds to the former patterned coat while it is undried and drying the latter patterned coat. CONSTITUTION:A coloring paint using a medium mainly composed of an organic solvent having more than 20wt% (at 20 deg.C) of water solubility is used to form a patterned coat 2 of less than 100mum wet thickness on a base 1 through printing such as gravure or flexographic printing. Next, a water coloring paint is printed through a silk screen correspondingly to a patterned coat, that is, on a patterned coat while the patterned coat is undried, thus building up another patterned coat 3. The appropriate coat thickness is approx. 100-500mum in terms of wet coat thickness. In this way, the external view is stereoscopic and further the coloring paint containing an organic solvent in the lower layer oozes out into the surface of the built-up patterned coat to form a multicolor pattern. This multicolor pattern formation is later dried into a finished coat.

Description

[Detailed Description of the Invention] This relates to a method for manufacturing a coated product. Conventionally, as a method for expressing a three-dimensional multicolored pattern, (a) As shown in the drawing, a multi-patterned coating film is printed by gravure or the like on a base material 1. 2 is formed, and after the patterned coating film 2 dries, screen printing is performed to form a patterned coating film 3 corresponding to the patterned coating film 2, thereby expressing a three-dimensional multicolored pattern. How to do it (% Kosho 50-14566)
(b) Forming a colored coating film on the concave portions or the entire surface of the base material having an uneven pattern, and after the colored coating film has dried, applying a colored coating film of a color different from the color of the colored coating film only on the convex portions. A typical method is known to express a three-dimensional multicolored pattern by forming a pattern.

However, conventional methods, such as method (a), have the advantage of being able to form three-dimensional multicolored patterns using simple means, but the boundaries between each color and each pattern are fixed, and each color and each pattern Even if you print the border with M oak, it lacks depth, and there are also differences in the height of the raised pattern and differences in surface condition (for example, whether it is grained or smooth). Conditions changed and skill was required to obtain the same appearance.

In addition, the method (mouth), like method (a), has clear boundaries between each color and pattern, lacks naturalness in depth, and cannot express soft points. This method has disadvantages such as being more complicated than method (a).

By the way, ceramics are known as a typical example of having multicolored patterns, and the multicolored patterns on their surfaces are fused patterns created by the oxidation-reduction reaction of various trace elements in a transparent glaze. Therefore, the multicolored pattern has no clear boundaries and has depth, giving it a natural and soft feel. Therefore, recently there has been a demand for painted objects such as flooring materials, wall materials, etc., which have such multicolored patterns and are three-dimensional.

Therefore, the inventors of the present invention developed a method to obtain such a natural and soft multicolored pattern, and filed a patent application (% Kosho 5).
7-45625) This method involves applying an undercoat paint to the concave portions of the uneven base material, removing the pools of paint, and then applying a topcoat paint of a different color than the undercoat paint over it. This method uses the convection phenomenon between both coatings to form a multicolored pattern.

However, this method has the disadvantage that if the base material is a flat plate, sufficient multi-colored patterns cannot be formed. Similar to method (a), a three-dimensional multicolored pattern can be formed using an hour wheel, and the resulting three-dimensional multicolored pattern has no clear boundaries, has depth, and has a natural and soft feel, just like ceramics. The present invention provides a method for manufacturing a coated article.

That is, the present invention provides a base material having a solubility in water of 20 times or more (20C
The colored paint using a medium mainly composed of an organic solvent is printed by gravure or flexible printing to form a patterned coating film with a wet film thickness of 100μ or less, and then tn'
tl'' While the patterned coating film is not dry, a water-based colored paint having a color different from the colored paint is screen-printed to form a raised patterned coating film corresponding to the patterned coating film, and then The present invention relates to a method for producing a painted object having a three-dimensional multicolored pattern, which comprises drying the paint film.

According to the method of the present invention, a bleed-in pattern with a tone is created on the surface layer of the raised pattern area, which could not be expressed by the conventional method, and this gives a sense of depth and depth to the color.

The formation of multicolored patterns through this kind of oozing.

The key point is the printing system in which a colored paint is printed using a medium mainly composed of an organic solvent with a water solubility of 20 weight, and then a water-based colored paint is printed using a medium mainly composed of water.

In addition, in a printing system consisting of a combination of printed colored paints using a medium mainly based on an organic solvent or a combination of printed water-based colored paints, if the lower layer coating amount is larger than the upper layer coating amount, a smudge-like appearance may occur. A multicolored pattern can be obtained, but if the coating amount of the lower layer is small, the lower layer paint is difficult to appear on the surface of the upper layer coating, and therefore a sufficient multicolored pattern cannot be obtained.

In addition, in a printing system that prints a water-based colored paint and then prints a colored paint using a medium mainly composed of organic solvents, the lower layer paint has a higher specific gravity and a higher surface tension than the upper layer paint. The lower layer paint tends to become trapped under the upper layer paint film, making it difficult to obtain a sufficiently colorful pattern, and the drying of the lower layer paint film tends to be delayed.

In contrast to these printing systems, according to the method of the present invention, the lower layer paint, which is a colored paint using a medium mainly composed of the organic solvent, is different from the upper layer paint, which is a water-based paint, due to the difference in the medium. Due to its low specific gravity and low surface tension, the lower layer paint easily bleeds onto the upper layer paint film during convection between the two layers.
Therefore, a colorful pattern with a natural and soft feel can be obtained.

The lower layer colored paint used in the present invention uses a medium mainly composed of an organic solvent having a solubility in water of 20% by weight. Hereinafter, such colored paint t' will be referred to as organic solvent-containing colored paint I. The organic solvent is preferably used in an amount of about 50% by weight or more in the medium of the colored paint containing the organic solvent.

Methyl alcohol is an organic solvent.

Ethyl alcohol, isoglobil alcohol, 5eC-
butyl alcohol, tar-ethyl alcohol, n-7
``Lower alcohols such as polyal alcohol: Ether alcohols such as N engineering alcohol monoethyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl alcohol: diethylene glycol diethyl ether, dioxane, acetic acid diethylene glycol monoethyl ether Ethers: methyl acetate, cellotul diacetate, etc. esters: acetone,
Examples include ketones such as methyl ethyl ketone and methoxymethyl pentanone, and mixtures of two or more of these organic solvents. It is also possible to use a small amount of water, but if it is excessive, it will be difficult to obtain a multicolored pattern if the amount applied is small, so it should be avoided to use water in large quantities.

Furthermore, if an organic solvent with low solubility in water is used, the organic solvent-containing colored paint, which is the lower layer paint, will be trapped in the lower part of the upper layer paint film and become hollow], and therefore a multicolored pattern cannot be obtained. Use should be avoided.

In addition to the above-mentioned organic solvent, the organic solvent-containing colored paint can be made from ordinary synthetic resins, coloring pigments and/or dyes, and additives such as extender pigments, thickeners, antifoaming agents, dispersants, surface conditioners, etc. as necessary. Therefore, commonly used organic solvent-containing colored paints can be used as they are. Note that if a water-soluble synthetic resin such as a water-soluble acrylic resin, melamine resin, alkyd resin, or polyamide resin is used as the synthetic resin, it will be easier to form a multicolored pattern, so use such a water-soluble synthetic resin. is preferred.

The water-based colored paint used in the present invention is commonly used. These include water-soluble resin paints using water as a medium, and water-dispersible paints such as hydrosil paints and emulsion paints, but those with a viscosity of 100 to 500 poise (Lyon viscometer) are suitable because they are screen printed.

Examples of the synthetic AT resin used in water-soluble resin paints include water-soluble cellulose derivatives, polyvinyl alcohol, melamine-polyester resin systems, phenol-polyester resin systems, and melamine-7 acrylic resin systems. Styrene is also used as a synthetic resin for water-dispersed paints.
! Tadiene resin system.

Examples include styrene-acrylic resin, acrylic resin, and epoxy resin. Furthermore, a combination type of both can also be used.

Although water alone may be used as the medium, some water-soluble organic solvents may also be used in combination for the purpose of improving film-forming properties.

The water-based colored paint consists of other layer color pigments and/or dyes, as well as an L6 extender pigment, various additives, etc., and can be used as is.

In the present invention, since the entire multicolored pattern is formed by bleeding, it is desirable that the organic solvent-containing colored paint and the water-based colored paint have affinity and compatibility with each other.

In addition, if the water-based colored paint that mainly forms the upper layer paint film completely hides the lower layer paint film, then it may just bleed into the lower layer paint, or it may have a transparency close to that of color clear. However, the effect of the present invention can be further enhanced by adjusting the layer so that the underlayer paint oozes out and becomes a deep colored layer.

Base materials used in the present invention include:) Plastic: Inorganic materials such as cement and gypsum: Plywood, Hard Zade, No.9-
Examples include, but are not limited to, cellulose materials such as chiculdate and paper; plates, sheets, molded building materials, and decorative items made of materials such as metals. Further, it may be coated with a base treatment such as Nolymer coating, or coated with a colored paint, if necessary.

Next, a method for manufacturing a coated article according to the present invention will be explained.

First, the organic solvent-containing colored paint is printed in a pattern on a base material by means of gravure printing, Fi7 printing, or the like. (This corresponds to 2iC in the figure.) The appropriate film thickness is 100 μm or less in wet film thickness, preferably about 5 to 50 μm. In addition, if the wet film thickness is too thick, when screen printing is performed on it, the water-based colored paint will be difficult to transfer, and the paint film will easily come off, so it should be avoided.

Next, while the patterned coating film is not dry, a water-based colored paint is screen printed corresponding to the patterned coating film, that is, on the patterned coating film, to form a raised patterned coating on the patterned coating film. (This corresponds to 6 in the figure.) The appropriate wet film thickness is 100 to 500 μm. In this way, a t-shaped appearance is obtained, and the organic solvent-containing colored paint in the lower layer is raised to form a patterned coating. A multicolored pattern is formed on the surface and then dried to form a film. Drying conditions depend on the type of paint, etc.

The pattern formed in this way may be dried by constant Y crystal drying, or by hot air drying, infrared drying, etc. after performing setting, preheating, etc. as necessary. The method of the present invention can easily apply a clear paint or a color clear paint to the paint film to give it more gloss, or to give the surface wear resistance. A three-dimensional multicolored pattern is formed, and the three-dimensional pattern obtained does not have sharp boundaries, and a painted object with depth and depth can be obtained, similar to ceramics.

The present invention will be explained below using examples. In addition, in the example “
"part" and "qb" are shown on a weight 1 basis.

Example 1 <Organic solvent-containing colored paint> Water-soluble acrylic resin solution --- 25 parts (medium:
Mixture consisting of 6:5 of ethylene glycol monobutyl ether and water: Non-volatile content: 45%) Iron oxide rust free dispersion pigment paste... 5 parts (medium:
Water: non-volatile content 60 yen) Ethylene glycol monoethyl ether... 50
Part water IIIIIIllll...e...
...0. 20 parts water-based colored paint>... (viscosity 300 poise/20°C) acrylic resin emulsion e
...... 35 parts (non-volatile content 5Oqb, minimum film forming temperature 20°C) Glass beads ・■...l... 35 parts (
Particle size 60μ or less) Titanium oxide white easily dispersible pigment paste 4 parts (medium: water; non-volatile content 601% Water 11. Meeting 25
Thickener ・・・・・・・・・・・・・・・000・01
On a slate board coated with a gray acrylic resin enamel coating, the organic solvent-containing colored paint was printed with a dotted pattern (wet film thickness 30 μm) by gravure printing, and then immediately paired with the printed dotted pattern. The above water-based colored paint was screen printed on a 30 mesh screen with a tile pattern (wet film: 4500 μm). At this time, the rust-colored dotted pattern on the lower layer was completely hidden by the white tile pattern, but a rust-colored dotted pattern gradually oozed out onto the surface of the white tile pattern.6 This was then dried at room temperature.

The finished painted board has gray joints, a white tile pattern with a soft bottom, and rust-colored dots that ooze out.
It had an appearance very similar to the mother flannel of Shino ware tiles, which have a defoaming machine to remove insects from ceramic firing.Example 2 <Yellow paint containing organic solvent> Water-soluble melamine resin solution... ... 40 parts (medium: Ingropyl alcohol: non-volatile content 80 qb) Phthalocyanine blue w Manki dispersion pigment base mm*
***a*ama@*m*mamma 1st part (media:
water: non-volatile content: 65 t) sec -f Chyl alcohol ・・・・・・ 50 parts (red paint containing organic solvent) In place of the above pigment paste, monoazo red easily dispersible pigment paste (vehicle: water: non-volatile content: 35 t) ) is used (Yellow paint containing organic solvent) Instead of the above pigment paste, Soryozo yellow easily dispersible pigment paste (medium: water: non-volatile content 65) is used (Water-based colored paint)... (viscosity 250) Poise/2
0 C) Water-soluble alkyd resin solution...
40 parts (medium: water; non-volatile content: 60 g) Water-soluble melamine resin solution 20 parts (
Medium: inopropyl alcohol; non-volatile content: 80%) Titanium oxide white easily dispersible pigment paste...10 parts (medium:
Water: non-volatile content 60) Water self...Φ・pleasure...---war...2
Part 6 No. 9 Radruenesulfonic acid ・@1...2
Part thickener・・・・・・・・・・・・・・・Fist・・
... On plywood coated with a two-part gray primer, a floral pattern was gravure printed with the above five colors of organic solvent-containing paint to a wet film thickness of 50 μm, and then immediately corresponding to the floral pattern printing, The above water-based colored paint is screen printed on a 30-mesh screen with a tile pattern (wet film 11
300μ) At that time, the floral pattern was completely hidden by the white tile pattern, but blue and red gradually appeared on the surface of the white tile pattern.

It oozed with yellow floral patterns.

After setting for 5 minutes, it was dried with hot air at 80C for 20 minutes.

Next, the entire surface was coated with clear paint for 5 minutes using a roll coater (30P/m2), and dried with hot air at 80 DEG C. for 10 minutes.

The finished painted board has gray joints, a semi-gloss bottom, a white tile surface layer, a W, red, and yellow floral pattern oozes out, and the painting looks very similar to the mother flannel of glazed tiles. there were.

Comparative Example 1 <Water-based colored paint> Acrylic resin emulsion 22.5
parts (non-volatile content: 50 parts, minimum melting temperature: 20C) Iron oxide rust easily dispersed pigment paste... 5 parts (medium: water: non-volatile content: 60 parts) Water **mmmmmm**mmamemaa*maaea
a 72.5 parts <Colored paint containing organic solvent>... (viscosity 300 poise/2QC) water-soluble acrylic resin solution...
39 parts (medium: mixture of 6:5 of ethylene glycol monobutyl ether and water: non-volatile content: 45 yen) Titanium oxide white easily dispersible pigment paste... 4 parts (medium: water: 14:3) Part 6) Ethylene glycol monoethyl ether...16 parts Thickener...... Age......--...
The process was carried out under the same conditions as in Example 1, except that the water-based colored paint was used for the 6-part gravure printing and the organic solvent-containing colored paint was used for the screen printing. However, there were no dark dots on the surface of the white tile pattern. It didn't appear at all.

Comparative Example 2 5e, a component of the organic solvent-containing colored paint of Example 2
Printing was carried out under exactly the same conditions as in Example 2, except that 25 parts of c-butyl alcohol was replaced with tM of t-4 nobutyl alcohol, and the solubility in water was set to less than 20 tM. However, no floral pattern appeared on the white tile pattern surface.

Comparative Example 3 In Example 2, the gravure printing of the floral pattern was performed twice at the same time to obtain a wet film thickness of 110μ, and subsequent screen printing was performed in the same manner, resulting in poor transfer.

[Brief explanation of drawings]

The figure shows a conventional painted object with a three-dimensional multicolored pattern. In the figure, 1 indicates a base material, 2 indicates a coating film formed by gravure printing, and 3 indicates a coating film formed by screen printing.

Claims (1)

[Claims] il+ A medium mainly composed of an organic solvent having a solubility in water of 20% by weight (at 20°C) on a substrate? The colored paint used is printed by gravure or flexography to form a patterned coating film with a wet film thickness of 10 μm or less.
Next, while the patterned coating film is not dry, a water-based colored paint having a color different from the colored paint is applied by screen printing to form a raised patterned coating film corresponding to the patterned coating film, and then the coating is applied. A method for producing a painted object having a three-dimensional multicolored pattern, which comprises drying a film. (2) A painted product having a three-dimensional multicolored pattern as set forth in paragraph (1) of the patent claim, characterized in that the synthetic resin that is the phosphoric acid component of the colored paint using the above medium is a water-soluble synthetic resin. Production method.