JPS6111378Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a decorative particle board having joints on both sides of the end.

There are various types of particle board, such as one layer, two layers, three layers, or multiple layers, but usually, as shown in Figure 1, the front and back layers are made up of a fine chip layer 1, and the core layer is made up of a coarse chip layer 2. It is common that This three-layer particle board has lower strength than one-layer or two-layer particle board or plywood, and has the disadvantage that the core layer in particular can break even with the slightest impact. For this reason, when particle board is used as a building material, special care must be taken in transportation, storage space, sawing, etc., and installation. In order to cover the chip layer 2, a veneer or a melamine board has been bonded by applying a highly viscous filler to an adhesive such as urea resin or vinyl acetate emulsion to the end surface.

Even if the end face of such a three-layer particle board is subjected to bonding or reciprocating processing for joining, the strength of the male part 3 where the coarse chip layer 2 is exposed is weak, and even in terms of strength after joining, the strength of the male part is weak during handling. However, it is prone to chipping even with the slightest impact, and its bending strength is about 1/2 that of plywood, making it unsuitable for practical use.

For this reason, decorative laminates with joint processing, that is, bonding processing such as bonjitsu or interlocking processing on both sides of the board, are limited to those whose substrate is made of plywood, hardboard, sawn wood, etc. that have uniform strength throughout. It is being

The object of the present invention is to provide a three-layer decorative particle board with joint processing that can be used in the same way as plywood or hardboard.

The present invention will be explained below based on the drawings.

Figures 1 and 2 show an embodiment of the present invention. Figure 1 shows the joint of the present invention up to a part of both end sides of the actual processing, and Figure 2 shows the joint of the invention up to the entire male surface of both end sides of the reciprocal processing. This is an example of processing.

Describing this idea in detail with reference to these figures,
The core layer is coarse chip layer 2 and fine chip layer 1, respectively.
A protruding male part 3 in which a coarse chip layer 2 is exposed is formed on one end side of the particle board. A female part 4 having a recess into which the male part 3 formed on one end side of another particle board to be joined is inserted and fitted is formed on the side surface of the other end. These side surfaces at both ends constitute a joint structure.

Further, from the upper surface of the board to the lower surface of the protruding part of the protruding male part 3 where the coarse chip layer 2 is exposed, and on the other hand to the upper back surface of the recessed part of the female part, a sheet of adhesive is applied via the adhesive layer 6. It is covered with a decorative sheet 5.

As the decorative sheet 5, commonly used decorative sheets such as paper, vinyl chloride film, polyethylene, polypropylene, and synthetic paper can be used.

The three-layer particle board and decorative sheet are bonded together using a commonly used adhesive. The adhesive may be applied to particle board. When bonding at room temperature, urea resin, vinyl acetate emulsion resin, ethylene-vinyl acetate copolymer adhesive, etc. are usually used as the adhesive, and when bonding is done by heating, hot melt adhesive is used, and the adhesive is applied directly to the end surface. However, in some cases, adhesive or urethane resin putty may be applied and dried, or after drying and polishing, adhesive may be applied again and the above decorative sheet is pasted. Sometimes. Also, the viscosity of the adhesive may be increased by adding a filler such as wheat flour or soybean flour to prevent the adhesive from being absorbed by the end surface.

Specifically, 3 pieces with a thickness of 15 mm, a length of 4 m, and a width of 15 cm.
A layered particle board was used as the substrate, and both sides of the board were subjected to a deformation process as shown in Fig. 2. On the other hand, a decorative sheet coated with 60 to 70 g/ ^m2 of a commonly used ethylene-vinyl acetate copolymer resin adhesive on the back side of a 0.05 mm thick vinyl chloride resin decorative film printed with a wood grain pattern was laminated onto the substrate. Then, a particle board with wrapped wood ends was obtained, in which the deformed edges on both sides were covered with a decorative sheet.

The wood edge-wrapped decorative particle board of the present invention has the following features: (1) Since the protrusions made of coarse chips are continuously covered with a decorative sheet, the protrusions will not chip during handling; The appearance is also beautiful.

(2) The joint can be fixed simply by driving a nail through the male protrusion, and since the coarse chip part is relatively porous, it is easier to drive nails into it than the fine chip part on the surface of the decorative board. Good sex.

(3) Decorative boards, which are cheaper than plywood and have excellent heat and sound insulation properties, can be used with the same ease of construction as plywood.

(4) The core layer, which is highly susceptible to the effects of moisture and moisture from the outside, is covered with a decorative sheet.
The effect of moisture on the decorative board can be reduced.

(5) When using particle board with a thickness of approximately 12 to 15 mm as a substrate, the decorative sheet is integrally covered on both sides of the substrate, so the decorative sheet prevents the substrate from bending to some extent during construction. can also be handled in the same way as plywood boards.

It has excellent effects not found in conventional particle board such as, and its low price further expands its use as a building material.

[Brief explanation of the drawing]

Both FIGS. 1 and 2 are cross-sectional views showing the joint structure of the decorative particle board wrapped around the wood ends of the present invention. 1: Fine chip layer of particle board, 2:
Coarse chip layer of particle board, 3: Male joint part, 4: Female joint part, 5: Decorative sheet, 6: Adhesive layer.

Claims (1)

[Scope of utility model registration request] A protruding male part 3 with a coarse chip layer 2 exposed on one end side of a three-layer particle board consisting of a fine chip layer 1 near the front and back layers and a coarse chip layer 2 as the core layer.
A joint process is performed on the side surface of the other end of the concave female part 4 into which the protruding male part 3 is inserted and fitted, and from the back surface of the protruding part of the male part 3 to the base surface, the upper back surface of the concave part of the female part 4 is formed. This decorative particle board is characterized by being covered with a continuous decorative sheet 5.