JP3087445B2 - Wood-based moldings and their manufacturing methods - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden molded article used as a wooden flooring or wall material, and has a beautiful appearance.
In addition, its manufacture is made easy.

[0002]

2. Description of the Related Art As a conventional wooden flooring, the one shown in FIG. 8 is known. This is a plywood, particle board or fiber board with a thickness of 5-20
A decorative plywood 4 in which a decorative veneer 2 having a thickness of 0.2 to 0.5 mm is bonded to a veneer plywood 3 having a thickness of 0.5 to 1.0 mm on a base plate 1 having a thickness of 0.5 mm. A groove 5 having substantially the same depth as that of FIG. 1 is formed by grinding along the longitudinal direction. The appearance of the wooden flooring material is similar to that obtained by joining several narrow floorboards in the width direction, and has the advantage of reducing the labor required for on-site construction.

[0003]

However, in this wooden flooring material, since the grooves 5 are formed by grinding the decorative plywood 4, a long manufacturing process is required, and the decorative veneer 2 is cut off. Since the ground surface of the veneer plywood 3 is exposed on the inner surface of the groove 5, the appearance is impaired, and there are inconveniences such as generation of grinding dust.

[0004] The present invention has been made in view of the above circumstances, and a wood-based molding material which has a beautiful appearance, in which the inner wall surface of the groove is also covered with a decorative surface, and which can be easily manufactured. It is another object of the present invention to provide a method for producing this wood-based molding.

[0005]

According to the present invention, there is provided a wood-based molding material comprising: a core material made of particle board or plywood;
An intermediate material formed by applying a binder to the wood fiber and solidifying, being laminated on one surface of the core material, and having a groove formed on a surface opposite to the surface on which the core material is laminated; Laminated on the surface where the material grooves are formed, no gaps on the inner surface of the grooves
And veneer veneers.

The thickness of the core material is 5 to 20 mm, the thickness of the intermediate material is 0.5 to 2 mm, and the thickness of the decorative veneer is 0.2 to 0.5 mm.
Preferably, the depth of the groove is approximately equal to the thickness of the intermediate material.

[0007] In the method for producing a wood-based molding material, a decorative veneer is placed on the inner surface of a mold having a ridge, and a binder is applied to wood fiber as an intermediate material on the upper surface of the veneer. A solution to the problem is to dispose the stacked body, and further arrange a particle board or plywood as a core material thereon, and pressurize and heat the entire contents thereof.

[0008] As the decorative veneer, a decorative veneer which has been subjected to a resin impregnation treatment to increase its flexibility may be used.

[0009]

According to the present invention, the wood-based molding material and the manufacturing method thereof according to the present invention have the above-mentioned structure, and the decorative veneer, the intermediate material, and the core material are sequentially laminated and integrated. A groove is formed.

[0010] Further, the method for producing the above-mentioned wood-based molding material is as follows: a veneer, a uncured intermediate material aggregate, a core, and a mold having a ridge having a transverse cross-sectional shape that does not extend toward the inner bottom surface. After laminating the materials, pressurizing and heating, and releasing the mold, a wood-based molded material can be obtained immediately.

[0011]

1 and 2 show one embodiment of a wood-based molded material according to the present invention. In the drawings, reference numeral 11 denotes a core material. The core material 11 is a rectangular parallelepiped made of particle board or plywood. On one surface of the core material 11, a plate-like intermediate material 12 obtained by applying a binder to wood fibers and solidifying the mixture is integrally laminated. A phenol resin or the like is mainly used as the binder.

A large number of grooves 13 having a V-shaped cross section are formed in the intermediate member 12 in parallel with each other. Groove 13
The groove may be a U-shaped groove or a U-shaped groove as long as it is not widened toward the back as shown in the cross section in FIGS. 3 and 4, but a V-shaped groove as shown in FIG. explain.

[0013] The surface 14 of the groove 13 of the V-shaped intermediate members 12 are formed has been covered by a decorative veneer 15, the decorative veneer 15, gap to the inner surface 13a of the groove 13
The decorative groove 16 is formed by covering the veneer veneer 15 in close contact .

The depth of the groove 13 is substantially the same as the thickness of the intermediate member 12, so that the depths of the decorative groove 16 and the groove 13 are substantially the same.

Since the decorative veneer is tightly covered along the surface of the intermediate member 12 in which the groove 13 is formed and the inner surface of the groove 13, the wooden veneer covers the entire surface. The appearance is excellent.

In order to manufacture the above-mentioned molding material, as shown in FIG. 6, a decorative veneer is provided on an inner bottom surface 17 of a mold 19 in which a plurality of inverted V-shaped ridges 18 are formed in parallel on an inner bottom surface 17. 15,
Intermediate material aggregate 20 obtained by applying a binder to wood fiber,
The core material 11 made of one of a particle board and a plywood is sequentially stacked and filled, and the whole of the filling is heated and pressed. The above-mentioned aggregate is obtained by applying a binder to the wood fiber and keeping it as it is without applying pressure.

By this operation, as shown in FIG. 7, the above-mentioned filling material is compressed and solidified, and a wood-based molding having a decorative groove 16 formed by the ridge 18 is easily formed. This molding material is easily released from the mold because the ridge 18 has an inverted V-shape that does not spread in the tip direction.

When the decorative veneer is pre-impregnated with a resin, the decorative veneer 16 to be formed has a good followability to the ridges 18 during molding, and the decorative groove 16 to be formed becomes beautiful.

The molding conditions of the filling by the mold differ depending on the thickness of the product, the binder applied, and the like. For example, when the product thickness is 15 mm, the specific gravity is 0.65 by treatment at 140 to 150 ° C. for 10 minutes. ~ 0.75 products are obtained.

[0020]

As described above, in the wood-based molded material and the method for producing the same according to the present invention, wood-based fibers are used, so that small pieces of wood can be used as a raw material, and the production of wood for environmental protection is achieved. Can be dealt with even if high quality plywood can no longer be obtained in the future. In addition, since the product can be obtained by one molding, there are advantages that the process is short, no manual operation is required, and a product having excellent appearance can be obtained at low cost.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a wood-based molding according to the present invention.

FIG. 2 is a perspective view of the molding material of FIG.

FIG. 3 is a diagram showing a portion A in FIG. 1 when a groove is U-shaped.

FIG. 4 is a view showing a portion A in FIG. 1 in a case where the groove is U-shaped.

FIG. 5 is an enlarged view of a portion A in FIG. 1;

FIG. 6 is a longitudinal sectional view showing a state in which a mold is sequentially filled with a decorative veneer, an intermediate material assembly, and a core material.

FIG. 7 is a view showing a state in which the filler of FIG. 6 is heated and pressed to form a wood-based molded material.

FIG. 8 is a perspective view of a conventional laminate obtained by grinding grooves on a decorative veneer surface of the laminate.

[Explanation of symbols]

11: core material, 12: intermediate material, 13: groove, 13a: groove inner surface, 14: surface on which groove is formed, 15: decorative veneer, 1
6 ... decorative groove, 17 ... inner bottom surface, 18 ... ridge, 19 ... mold,
20: Intermediate material assembly

Continuation of front page (56) References JP-A-56-8202 (JP, A) JP-A-3-10803 (JP, A) JP-A-2-299834 (JP, A) JP-B-48-38132 (JP) , B1) Japanese Patent Application No. 2-55029 (Japanese Utility Model Application No. 4-13303) Microfilm (JP, U) photographing the contents of the specification and drawings attached to the application form (58) Fields surveyed (Int. . ^7, DB name) B27M 3/00 B27D 5/00 B27N 3/04 B32B 21/02

Claims (2)

(57) [Claims] And 1. A particle board or consisting plywood <br/> core material, it was solidified binder is applied to the wood fibers, laminated on one surface of the core material, and is laminated with the core material An intermediate material having a groove formed on a surface opposite to the surface; and an intermediate material having a groove formed on the surface of the intermediate material having the groove formed therein .
A wooden molding material comprising a decorative veneer bonded to a surface without any gap . 2. A decorative veneer is disposed on an inner surface of a mold having a ridge, and an integrated body obtained by applying a binder to wood fiber as an intermediate material is disposed on an upper surface of the decorative veneer. A method for producing a wood-based molded material, wherein a particle board or a plywood serving as a core material is disposed thereon, and the entire content thereof is heated under pressure.