JPS6392403A - Decorative flitch and manufacture thereof - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to decorative plywood and a method for manufacturing the same.

[Background technology]

When attaching a thin decorative veneer such as a veneer that has undergone chemical treatment such as bleaching or coloring or a veneer that has been impregnated with a resin onto plywood, the adhesive usually contains coloring pigments, dyes, hiding pigments, etc. is added to prevent the color of the plywood from being reflected on the surface of the thin decorative veneer.

However, if the amount of pigments, dyes, etc. added to the adhesive is increased in order to increase the hiding effect, the colored adhesive will seep onto the surface of the veneer due to the liquid permeability of the veneer itself, resulting in a poor appearance. It has the disadvantage of becoming. On the other hand, if the amount added or the amount of adhesive applied is small, the color of the plywood surface will be reflected on the surface of the decorative veneer, and the color transfer prevention effect (concealing effect) will be lost.

[Purpose of the invention]

The purpose of this invention is to ensure that the color of the underlying plywood is decorative. Decorative plywood and △ that prevent color transfer to the surface of the veneer An object of the present invention is to provide a method for manufacturing the same.

[Disclosure of the invention]

The decorative plywood of the present invention is characterized in that a concealing layer, an adhesive layer, and a thin decorative veneer are laminated in this order on the plywood.

Therefore, according to the present invention, since the color of the plywood surface is prevented from being transferred to the surface by the concealing layer, color transfer to the surface of the decorative veneer is prevented, and it is also possible to prevent the color from being transferred to the surface of the decorative veneer. Since the adhesive does not contain a masking agent,
Even if the adhesive seeps onto the surface of the decorative veneer, it will not be noticeable and therefore the appearance can be prevented from being damaged.

The drawing is an explanatory diagram showing the decorative plywood according to the invention,
As shown in the figure, this decorative plywood is made by laminating, in this order, a concealing layer 2, adhesive layer 3, and a thin decorative veneer 4 on a plywood 1. It consists of

As the decorative plate 4, chemical treatments such as bleaching, coloring, acid treatment, alkali treatment, etc., or resin impregnation treatment (wp
(C treatment) wood decorative veneer.

Further, as the concealing layer 2, for example, a resin layer obtained by adding a concealing agent to a resin adhesive conventionally used for adhering decorative veneers to plywood can be used. Examples of the resin adhesive include polyhinyl acetate, polyurethane, and polyvinyl alcohol. As the masking agent added to the resin adhesive, a coloring agent (pigment or dye) can be used alone or in combination. The addition tail is 10 to 30 of the planning pigment for the amount of t,4>
%, colorant O~5% is appropriate. Further, instead of such a resin layer having hiding properties, a masking film or sheet may be used.

When a resin coating film is used as the hiding layer 2, a resin layer 6 agent that is the same as or different from the resin used for the hiding layer 2 can be used for the adhesive layer 3. In this case, it is preferable that the adhesive layer 3 is colorless and transparent in order to make the adhesive seeping from the surface of the decorative veneer 4 less noticeable.

When manufacturing the decorative plywood of this example, on the plywood 1,
After applying a resin containing a concealing agent and drying it semi-dry to form a concealing layer 2, a colorless and transparent adhesive is applied thereon, and a decorative inner board 4 is attached through this adhesive layer 3. Paste ζj
do.

In this way, since the resin containing the masking agent is applied and then the adhesive is applied after the main drying or drying, if the resin and adhesive mix together, the masking effect may be impaired or the masking agent may stain the surface. It is possible to reliably prevent it from coming out.

Is the coating amount of the concealing agent-containing resin 30 to 10 g/r+? The degree is appropriate. Also, the amount of adhesive applied is 80 to 200 g.
/m is appropriate.

The obtained decorative plywood can reduce the possibility that color variations on the plywood surface stand out on the surface and appear as color tone differences in the product.

Next, the decorative plywood of the present invention will be explained in detail with reference to Examples.

Example 1; 30 to 7 og of highly concealing resin on plywood
/= and semi-dried by blowing hot air at 100°C for 10 seconds. Next, apply a colorless adhesive of 80 to 200 on this top surface.
A decorative ready-made board (thickness 0.5 ***) which was coated at a rate of g/m and separately subjected to chemical treatment and WPC treatment was attached.

The resin and adhesive used were of the same material, and 1) 5-screening pigment (10-30%) and coloring agent (0-5%) were added as concealing agents.

The decorative plywood (wpclffi deck) obtained in this way has a colorless adhesive that oozes out onto the surface of the decorative veneer, but because it is colorless, the seepage is hardly noticeable, and the color of the plywood is not reflected. It was also completely blocked out, so there was no deterioration in the quality of the product.

Example 2: A decorative plywood was obtained in the same manner as in Example 1, except that a decorative veneer not subjected to the Wl)C treatment was used. At this time,
The difference in color tone (ΔE) between the plywood sheets used was about 12, while the difference in color tone between the products was reduced to 4, confirming that it is effective in preventing color differences.

[Effects of the Invention] According to the decorative plywood of the present invention, since the color of the plywood surface is prevented from being transferred to the surface by the concealing layer, color transfer to the surface of the decorative veneer is prevented and the decorative layer is prevented from being transferred to the surface. The adhesive used to bond the veneers does not contain concealing agents, so
Even if the adhesive seeps onto the surface of the decorative board, it will not be noticeable and therefore the appearance will be prevented from being damaged.

Further, according to the method for manufacturing decorative plywood of the present invention, since the adhesive is applied after the resin containing the hiding agent is applied and the adhesive is applied in a semi-dry or dry state, the resin and the adhesive mix together, impairing the hiding effect. can be reliably prevented.

[Brief explanation of the drawing]

The drawing is an explanatory diagram showing a decorative plywood according to the present invention. 1... Plywood, 2... Hiding layer, 3... Adhesive layer, 4
・・・Decorative veneer base plate 1 2 pieces 1

Claims (2)

[Claims] (1) A decorative plywood characterized by laminating a concealing layer, an adhesive layer, and a thin decorative veneer in this order on the plywood. (2) A resin containing a masking agent is applied onto the plywood, and after it is semi-dry or dried, a colorless transparent adhesive is applied on top of the resin, and a thin decorative veneer is pasted on the plywood. Method of manufacturing decorative plywood.