JPS61169202A - Aggregate wood - 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 [Technical Field] The present invention relates to laminated wood treated with WPC.

[Background technology]

Wood is a light and strong material that has hygroscopic and heat insulating properties, and is soft to the touch, so it is used in a wide range of applications such as building materials, furniture, and structural materials. However, since wood has drawbacks such as curling and rotting, various improvement methods have been proposed and put into practical use. One of the most effective of these is the resin impregnation method (WPC). WPC dramatically improves the dimensional stability and antiseptic properties of wood. However, by impregnating it with resin, the original characteristics of wood, such as its woody feel and moisture absorption properties, are lost, so its use is restricted except for some building materials. Met.

Another improvement method is the method of laminating wood. This is a method that takes into account the warp and direction of the wood, and assembles each piece of wood with adhesive so that the warp and warp of each piece of wood is offset. Although it has the advantage of improved stability, it has the disadvantage of not improving antiseptic properties.

[Purpose of the invention]

An object of the present invention is to provide a laminated wood with improved dimensional stability and antiseptic properties while retaining the original wood feel of the wood.

[Disclosure of the invention]

The laminated wood of the present invention includes a plurality of resin-treated wood pieces with the non-resin-impregnated side facing outward and the resin-impregnated side facing inside, and an adhesive layer in which these wood pieces are laminated and bonded with the resin-impregnated side. It is.

As described above, according to the present invention, the surface of the resin-treated wood pieces to be laminated and bonded is made into a non-resin-impregnated surface, so the wood has a woody feel, and the inner surface of the wood pieces is made into a resin-impregnated surface. Dimensional stability and antiseptic properties can be imparted by the effect of impregnation treatment.

FIG. 1 shows an example of the method for producing laminated wood according to the present invention. As shown in the figure (A), as a first step, a small square piece of wood 1 is impregnated with resin by a vacuum pressure method, and then the resin is cured by heating, radiation irradiation, etc. to form a resin-impregnated layer 2. At this time, the type and size of the wood are not particularly limited, and various types of wood can be used depending on the purpose. Similarly, the conditions for resin injection, the type of resin, the amount of resin impregnated, the curing conditions, etc. are not limited, and may be used depending on the application.

In this way, a small square piece of wood 1 processed with WPC is impregnated with resin only on the periphery and not in the center. In this state, the cutting line A shown in Figure (5)
A small square piece of wood 1 is cut into two along its fiber direction to obtain a resin-treated wood piece 3.

Next, as shown in the same figure (R), in the second step of VC2, the resin-treated wood pieces 3 are assembled with the non-resin-impregnated surface 3a outside and the resin-impregnated surface 3b inside. and glue them together. At this time, the 40 types of adhesive layers, the amount of coating, molding temperature, pressure, etc. are not particularly limited. The assembly may be assembled as shown in FIG. Furthermore, the third
As shown in the figure, four small wood pieces 5 may be obtained by cutting one small wood lumber l in a cross shape, and the pieces may be assembled and bonded together using an adhesive layer 4 with the resin-impregnated surface 5b facing inside.

In addition, wood generally has a sapwood part and a heartwood part, and the sapwood part has good permeability to chemicals, but has poor dimensional stability and antiseptic properties, while the heartwood part has poor dimensional stability. Although it has good antiseptic properties, it has poor permeability to drugs, etc. Therefore, when wood is impregnated with resin, the sapwood part of the wood is impregnated with the resin, and the heartwood part is not impregnated with the resin. Therefore, when assembled as shown in Figures 1 to 3, the characteristics of the sapwood and heartwood and the advantages of resin impregnation are well balanced, the surface has a woody feel due to the heartwood, and the interior has a woody texture. The wPc processing on the material improves the dimensional stability and antiseptic properties, making it possible to make the physical properties uniform.

Next, an example will be given and explained.

Example: A small square piece of Japanese pine (40 x 40 x 1800 gm) was impregnated with a commercially available polyester resin using a vacuum pressure method and heated to obtain a WPC small square piece of Japanese pine wood. This was cut into two pieces in the fiber direction to obtain wood pieces measuring 20 x 40 x 1800 m+. The resin-impregnated surfaces were glued together with a vinyl urethane adhesive to obtain a modified wood.

Compared to the original Japanese pine, this material had a wood texture that was almost the same in appearance and had greatly improved dimensional stability and antiseptic properties. and hold E-
It also has the effect of improving dimensional stability and antiseptic properties.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of the method for producing laminated wood of this invention, FIG. 2 is an explanatory diagram of another laminated timber of this invention, and FIG.
The figure is an explanatory view showing another method of manufacturing laminated wood according to the present invention.

Claims (1)

[Claims] A laminated wood comprising a plurality of resin-treated wood pieces with the non-resin-impregnated side facing outward and the resin-impregnated side facing inside, and an adhesive layer in which these wood pieces are bonded together with the resin-impregnated side.