JPS60132758A - Manufacture of decorative board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a decorative board using a wood material as a base material and adhering a decorative board to the surface thereof. ′ □ The wood material that serves as the Tsutomi base material may have various color irregularities due to individual differences in the wood used as the raw material, growth defects such as tar streaks, discoloration caused by microorganisms such as blue discoloration, and chemical discoloration such as iron contamination. It is common for this to occur. When decorative materials are adhered to such wooden substrates using adhesives that become transparent after curing, these color irregularities may be seen through the decorative surface, and the overall color tone may vary depending on the loft of the wooden substrate. Problems such as this are occurring. This tendency is particularly noticeable when the decorative material is thin or highly transparent.

For this reason, a method has been adopted in which the color unevenness is concealed by adding a concealing agent or coloring agent such as a pigment or dye to the adhesive, thereby making the final color tone uniform.

However, when using hardwood thin veneers such as zelkova as a decorative material, the adhesive material seeps out from the conduit part of the decorative veneer or the split part of the veneer during adhesion. In addition, when highly transparent decorative materials such as synthetic resin-infused veneers are used, there may be moxibustion points in appearance, such as spots due to poor dispersion of pigments that can be seen through the decorative materials. i is likely to occur. Furthermore, there is a risk that uneven penetration of the adhesive into the wood base material and roll marks of the spray goo may cause new uneven color tones.

Therefore, in order to eliminate the above disadvantages, this invention prevents color unevenness without adding colorants such as pigments or dyes to the adhesive.
To provide a method for manufacturing a decorative board that unifies the color tone.

An embodiment of the present invention will be described below with reference to the drawings.
First, the coloring agent (1) toned to the desired color tone is mixed, and the colored material (1) is mixed to create various color irregularities.

An adhesive (3) that becomes transparent or translucent after being applied to the surface of the resulting wood base material (2) using a coloring machine such as a sponge roll coater and dried, and then cured using a coating machine such as a roll spreader. is applied, and the decorative material (4) is adhered.

Further, in this invention, a colorant is continuously applied using a sponge roll coater or the like, and then an adhesive is applied using a roll spreader or the like to adhere the decorative material.

Because of this, it has the advantage of being easily adaptable to the conventional manufacturing process for decorative materials, which is a series of continuous processes, without sacrificing productivity. In particular, when a coloring agent containing thinner or the like as a solvent is used, the drying time is extremely fast even at room temperature, so there is no reduction in workability.

Furthermore, bleaching the surface of the wood base material with a bleaching agent prior to coloring is more effective for uniformly coloring J-.

(Example 1) On the surface of Kapor plywood which has uneven color tone, 2 g/square meter of oil-based stain toned to the zelkova color was applied, and after air drying, α
-Apply 15g/square of olefin adhesive to a thickness of Q
, a 3mm zelkova veneer was heated at a temperature of 115°C and a pressure of 3 kg/
cm x time and 1 minute.

The thus obtained zelkova veneer-covered decorative board showed no contamination in the conduit section, and had a uniform finished color tone with no noticeable color unevenness of the base plywood.

(Comparative Example 1) 15 g/square meter of an α-olefin adhesive toned to a zelkova color with titanium oxide and water-based dye was applied to the surface of Kapor plywood, which had an uneven color tone, to a thickness of 0. "3m
A zelkova veneer of size m was bonded □ under the same conditions ξ□ as in the above example.

Although the resulting zelkova veneer decorative board was able to prevent the color unevenness of Kapor plywood, the colored and opaque coloring agent seeped out from the conduit portion and caused contamination on the surface.

(Example 2) Is there a difference in color tone? The surface of Kapor plywood has a reddish-brown tone,
Apply 2g of colored water-based filter per square meter, and after drying, apply epoxy acrylic adhesive pJ! Hemlock veneer coated with 5g/square, thickness ρ, 6mQ synthetic resin injection treatment, temperature 14.0℃ x pressure 8K 71g/cA
Glued in X hours and 8 minutes. ,1 In this way, the content of the hemlock veneer treated with resin injection was made translucent! The tray became a uniform dark reddish-brown color and a deep pine-like appearance was obtained. , 1 (Comparison example 2).

2. On the surface of Kapor plywood, which has a long life in color. Eboki wood colored reddish-brown by fermented iritan and pigments? Apply 15g/square meter of adhesive to the acrylic, thickness 0.6+m
An example of a rice hemlock veneer treated with a synthetic resin of m, 2 raw beatings! Glued with a cow. ,.

The thus obtained synthetic tree leg thinning treated rice] Nga veneer has white spots due to concealment due to penetration of the adhesive into the entire base material, unevenness, and poor dispersion of titanium liquefied. It was visible through the surface and deteriorated the appearance.

As explained above, this invention has the effect of preventing color unevenness and unifying the finished color tone by adhering a decorative material to a pre-colored wooden base material via an adhesive that becomes transparent or translucent after curing. .

[Brief explanation of drawings]

Figure 1 is a sectional view of the decorative board ψ manufactured by the conventional example, and Figure 2
The figure is a sectional view showing an embodiment of the present invention. , . 1... Coloring agent, 2... Wooden base material, 3... Transparent or translucent adhesive, 4... Makeup, material, 5... Base layer. 1. Patent applicant Juken Sangyo Co., Ltd.

Claims (1)

[Claims] In a decorative board in which a decorative material is adhered to the surface of a wooden base material, the surface of the wooden base material is colored with a coloring agent or a bleaching agent in advance to a desired color tone, and after curing, it becomes transparent or semi-transparent. A method for manufacturing a decorative board, which comprises bonding the decorative board through a transparent adhesive.