JPS582073B2 - Sanekakoumokuzainohiyoumenohifukusuruhouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of coating a synthetic resin sheet onto wood treated with wood.

There are already building materials in which a decorative sheet with a wood grain pattern printed on it is attached to the surface of the substrate, but the conventional ones are limited to the top surface and part of both sides of the substrate, where the surface to which it is attached is flat. It was easy to get caught.

However, some of the woods used as building materials do not only have flat surfaces.

For example, wood that has a concave part on one side and a convex part on the other side, such as a wood grained wood, can be combined with an adjacent grained wood of the same type, so ceiling boards and floor boards can be It is often used for wall coverings, etc.

If this processed wood is made of materials such as plywood, particle board, and plasterboard, it can be made at a very low cost, but it is weak against moisture and tends to warp and become misshapen, resulting in poor durability.

The present invention technically overcomes the difficulty in conventionally covering the above-mentioned wood with a resin sheet or decorative sheet, and produces wood with a wood finish that is inexpensive and does not cause distortion or deformation over a long period of time. This is what we provide.

That is, in the present invention, the processed wood is placed on a base having suction holes, a heated resin sheet is supplied from above, and the air between the base and the resin sheet is degassed through the suction holes. By doing this, the resin sheet covers at least the top and side surfaces of the wood grained wood, and in addition, molds with concave and convex shapes that match the shapes of both sides of the wood grained wood are used. The present invention is characterized in that the side surface of the grained wood is pressed by the method, and the surface of the grained wood can be coated by the present invention.

To explain in more detail below, the resin sheet used in the present invention is one that has a relatively low melting point or softens at a low temperature, such as an ethylene vinyl acetate copolymer film, a polychlorinated xenyl film, or a synthetic paper, and has good moldability. A suitable resin film is suitable.

Although it is naturally within the technical scope of the present invention to apply a wood grain pattern, a checkered pattern, etc. to the resin sheet by means such as printing, it is not necessary to apply a separate printed pattern depending on the use.

Naturally, it is also possible to apply the heat-sensitive and pressure-sensitive adhesive to the back surface of the resin sheet in order to increase the adhesion to wood, and then carry out the method of the present invention.

Further description will be made based on drawings showing embodiments.

That is, as shown in FIG. 1, a processed wood 4 is placed on a base 1 having a large number of suction holes 2 via a stand 3.

The stand 3 is provided to wrap the resin sheet 5 around the back surface of the processed wood 4.

There is a box-shaped member 6 that is open at the top below the part of the base 1 that has the suction hole 2, and a vacuum pipe 7 extends downward through the bottom plate of the box-shaped member 6. 17
The pipe 7' branches into a pipe 7' and a pipe 7', and is connected to a vacuum pump 8 and a hot air supply device 9, respectively.

On the other hand, a box-shaped holding frame 10 is attached to the upper part of the base 1 in a vertically movable manner by an air cylinder 11, and presses down the resin sheet 5 at the portion of the holding frame 10 that contacts the base 1.

A heater 12 is provided on the ceiling plate of the holding frame 10, and serves to heat the resin sheet 5.

Further, on the sides of the presser frame 10, there are pusher dies 14 and 15 attached to the frame 13.

The pusher die 14 is a convex die that matches the concave side surface of the processed wood 4, and the pusher die 15 is a concave die for the same reason.

Although the press molds 14 and 15 are shown in the figure as being able to be moved left and right using one type of air cylinder, they can be operated using other conventionally known means such as a cam type or a combination of a crank and a cylinder. It is also possible to move it left and right.

Next, to summarize the operations in the order of steps, the processed wood 4 is placed on the substrate 1, and then the resin sheet 5 is covered from above.

Next, the holding frame 10 is lowered, and the resin sheet 5 is held between the lower end of the holding frame 10 and the upper surface of the base 1.

Subsequently, the heating heater 12 is activated, and the hot air supply device 9 is activated to send hot air from below through the pipe 7 and the suction hole 2 to heat the resin sheet 5.

The heating temperature varies depending on the material of the resin sheet used, but is between 100 and 200°C.

When the vacuum pump is operated while heating the resin sheet 5, the air existing between the base 1 and the resin sheet 5 is exhausted, atmospheric pressure is applied from above, and the resin sheet 5 is partially heated. Since it is in a molten state, it will be in the state shown in Figure 1, and it will stick to the wood except for a part.

Since the processed wood 4 is placed on the stand 3, the resin sheet 5 wraps around the back side of the processed wood 4.

In such a state, when the press dies 14 and 15 are brought close to the wood grain 4 from the left and right sides, the resin sheet 5 is brought into close contact with the shape of both side surfaces of the wood wood 4.

After adhesion, the resin sheet 5 is cooled and taken out, and unnecessary parts of the resin sheet 5 are cut off to obtain a resin-coated wood surface coated with a resin.

This is shown in Figure 2.

Needless to say, if a resin sheet or a decorative sheet is further attached to the back surface 16 of this material, a tanned wood coated over the entire surface can be obtained.

Although the above embodiment shows an example in which the stand 3 is used, the present invention is not particularly limited to this, and the implementation of the present invention will not be hindered even if the processed wood is placed directly on the base.

As described above, according to the present invention, a resin coating or a printed resin sheet can be applied to the surface of wood treated with wood, and can be applied to plywood, plywood,
If the method of the present invention is applied to wood grains made of materials such as particle board and gypsum board, it can be made into a beautiful building material that prevents moisture and does not warp over a long period of time.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an example of an embodiment of the present invention,
FIG. 2 is a cross-sectional view showing an example of sane processed wood obtained by the present invention. 1... Base, 2... Suction hole, 3... Stand, 4...
Sane processed wood, 5... Resin sheet, 6... Box-shaped member, 7... Vacuum pipe, 8... Vacuum pump, 9
...Hot air supply device, 10... Holding frame, 11...
Air cylinder, 12... Heater, 13... Flame, 14, 15... Pressing die.

Claims (1)

[Claims] 1. Sand-processed wood is placed on a base having suction holes, a heated resin sheet is supplied from above, and the air between the base and the resin sheet is degassed through the suction holes. Covering at least the top and side parts of the wood with the resin sheet, and further pressing the side parts of the wood with concave and convex shapes that match the shapes of both sides of the wood. A method for coating the surface of Sanehada material.