JPS60257875A - Painted material and its preparation - Google Patents

Abstract

PURPOSE:To efficiently form a surface pattern having high design effect, by applying an electron beam curable paint to the surface of a substrate before covering the said substrate with an air blocking sheet having electron beam permeability. CONSTITUTION:At first, an electron beam curable paint is uniformly applied to the surface of a substrate by using a pinting apparatus such as a roll coater. Next, an electron beam permeable air blocking gloss sheet having a matte pattern part is allowed to cover the painted surface. Then electron beam with acceleration voltage of about 150-600kV and current capacity of about 25-300mA is irradiated from the sheet covered side and the electron beam curable paint is polymerized and cured over the entire layer within a short time to form a cured paint film. Thereafter, if the air blocking sheet is peeled off, a painted material having the cured paint film having matte and gloss pattern parts provided to the surface thereof in a composite state is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coating 41 in which a cured coating film of an electron beam curable coating material is formed on the entire surface of a substrate, in which a matte pattern portion and a glossy pattern portion are mixed, and a method for manufacturing the same.

Conventionally, this type of coating material has been manufactured as follows.

First, apply electron beam curing paint to the board17.
After covering the surface of the sheet with an arbitrary pattern that does not transmit electron beams, the surface is irradiated with electron beams to polymerize and harden the paint on other parts except for the pattern area, and finally, the pattern is applied. The sheet was peeled off, and the uncured parts of the substrate surface were washed away to form four parts that matched the pattern, creating the desired coating material.

However, such conventional coating materials still have the following problems.

(λ) Requires a pattern sheet that does not transmit electron beams to form the pattern. Then, the decorative sheet must be peeled off with uncured portions formed by irradiation with electron beams, which may stain the decorative surface during peeling, and furthermore, this decorative sheet cannot be reused.

(b) Uncured paint must be washed out, making the work complicated.

(c) A decorative board with a four-sided pattern on its surface.
, its gloss is uniform and its design quality is low.

(d) The coating film in the uncured part is weak.

The present invention aims to solve the problems of conventional decorative materials of this type as described above. That is, the present invention aims to provide a coating material with a higher design quality by applying an electron beam curing type paint to the surface of a substrate and then covering the substrate with an electron-transparent air-shielding sheet.

(Explanation of Examples) Examples of the present invention will be described below.

First, apply electron beam curing paint to the surface of the board using a roll coater.
Apply evenly using a coating device such as a flow coater.

Substrates include plywood, fiberboard, wood chip board, wood chip cement board, silica board, crow board, metal board, organic materials, inorganic materials, mixtures of organic and inorganic materials, composite boards, iron plates, aluminum plates, and stainless steel plates. Nato is used. It can also be applied to sheet materials such as paper, cloth, and synthetic resin sorting.

? u Electron beam curable paints include unsaturated polyester,
Polyester acrylate, epoxy acrylate yarn, polyether acrylate, urethane acrylate 1
- Resin coatings such as thread, polyol acrylate, melamine acrylate, etc. are used.

These paints are excited or ionized as a primary process by electron beam irradiation, generating radicals, and as a secondary process, the radicals diffuse into the reaction system and reach the final reaction product through chain transfer of the radicals, resulting in curing. A coating film is formed.

Next, a glossy electron beam transparent air shielding sheet having a matte pattern portion is applied to the surface coated with the electron beam curable paint.

As the air-shielding sheet, a synthetic resin sheet or film that does not shrink when exposed to electron beams, such as a polyester film, is used. The appropriate thickness is 150 μm or less; anything thicker than that has a problem with electron beam permeability. However, this problem can be solved by making the electron beam stronger, but it is not economical.

Generally, the air shielding sheet is glossy as a whole, and a glossy pattern is formed in any part of the sheet. However, on the contrary, the matte Hou-like part of the sheet, for example,
In some cases, a sandblasting method or a matte film is used, and it consists of a collection of fine J and C irregularities. In addition, Man]
・The film may be calendered and a transparent patterned sheet is applied so that the patterned side is on the paint layer side.

Next, from the surface side covered with the air shielding sheet? t
Accelerating voltage 150-600 K using f-ray irradiation device
V, a current capacity of about 25 to 300 mA, the electron beam is irradiated to polymerize and cure the electron beam-cured paint over the entire layer in a short time to form a cured coating film.

On the surface of the cured coating, a matte cured coating is formed on the matte pattern portion formed on the air shielding sheet, and a glossy cured coating is formed on the other portions.

For example, in the case of the sheet 1 having the matte pattern shown above, the matte pattern on the surface is transferred to the coating film portion, and a patterned matte cured coating film is formed.

Finally, after forming the cured coating film, the air-shielding sheet applied on the surface is peeled off.

In this way, a coating material having a cured coating film of an electron beam curable paint in which matte patterned areas and glossy patterned areas coexisted on the entire surface of the substrate was obtained.

(Actions and effects of the present invention) The effects of the present invention can be summarized as follows.

(a) The 1% erased pattern portion and the glossy pattern portion coexist, resulting in a surface pattern with an unprecedented high design quality.

For example, when viewed from the IE side, the pattern cannot be seen because they are the same color, but when viewed from the side, the pattern is visible, giving it a unique appearance.

(b) In the manufacturing method, the matte pattern part is
This sheet is applied to the coating layer 1 of the paint and is peeled off after the paint is completely cured. Unlike conventional methods, contamination of the coating film portion occurs during peeling, which is a problem.

However, the peeled sheet can be reused.

(c) Coating F) is completely cured, so it is easy to clean weak areas with patterns, and there is no need for washing out, making it easy to work with.

Claims (1)

[Scope of Claims] (++ A coating material characterized in that an electron beam-curable paint cured coating film is formed on the entire surface of a substrate, including a matte pattern portion and a glossy pattern portion of 4%. (2) ) Apply electric-r-ray curing paint to the entire surface of the board, and (
ξIn the cured state, the surface of the coating film is covered with a matte electron beam transparent air-shielding sheet having a matte pattern, and then an electron beam is irradiated to form the electron beam curing type paint. After polymerization and curing to form a cured coating film, the applied air-shielding sheet is peeled off, and a matte patterned part and a glossy J patterned part are mixed on the surface of the substrate (electron beam curing). A method for producing a coating material, characterized by forming a cured coating film of the coating material.