JP2743447B2 - Method for manufacturing veneered metal member - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for manufacturing a veneer-coated metal member in which a metal plate formed by stacking veneers made of natural wood is formed into a three-dimensional shape.

<Prior Art> Conventionally, as a method for manufacturing a wooden member having a three-dimensional shape, there are the following three methods.

(B) Method of cutting solid wood into a three-dimensional shape Although it has a high degree of freedom in shape and can produce members of various shapes, the use of solid wood is extremely expensive and heavy. This method was unsuitable for mass-produced products because of the large grain variation.

(B) Molded plywood method This is a method of manufacturing a member having a predetermined shape by laminating a veneer, a veneer serving as a base material, and, if necessary, a metal plate, and applying heat and pressure. However, it takes a relatively long time, and is not suitable for mass production.

(C) Three-dimensional laminating method This is a method of laminating a veneer on a surface of a base material such as a metal plate or wood formed in advance in a predetermined three-dimensional shape while pressing the veneer with a deformable sheet such as a rubber sheet. However, since the degree of freedom in the shape that can be laminated is low, and the lamination takes time, it has to be said that this method is inconvenient for mass production.

As an improvement over such a defect, there is a method in which a veneer obtained by slicing a natural tree is bonded to the surface of a moldable metal plate via an adhesive, and then formed into a three-dimensional shape by press molding.

However, a veneer obtained by slicing a natural tree generally differs in the thickness and the degree of back cracking due to the difference in suitability for slicing the veneer depending on the tree species and the production area.

The veneer is manufactured by slicing natural wood,
The thickness was 0.2 mm or more, which was not sufficient in terms of three-dimensional formability, and was limited to shallow shapes.

<Problems to be Solved by the Invention> The object of the present invention is to use a veneer-coated metal plate efficiently and
An object of the present invention is to provide a method of manufacturing a veneer-coated metal member stably and inexpensively.

<Means for Solving the Problems> The present invention is to laminate a veneer made of natural wood sliced to 0.2 to 1 mm on the surface of a metal plate via an adhesive, impregnate the resin composition, and then This is a method for manufacturing a veneer-coated metal member obtained by forming a three-dimensional shape of a veneer-coated metal plate whose surface is ground to a thickness of 0.15 mm or less.

Here, when the veneer is laminated on the surface of the metal plate via an adhesive, the support of the cloth, film, non-woven fabric or the like is bonded in advance to the back surface of the veneer so that the three-dimensional shape can be formed well. be able to. The veneer is sliced to 0.2 to 1 mm as described above.However, the thickness is not uniform depending on the tree species and the place of production. Grind the veneer attached to the siding belt of the belt sander,
The thickness of the veneer is processed to 0.15 mm or less, preferably 0.1 mm.

Then, after bonding the veneer to the metal plate and before grinding, the gap of the veneer is impregnated with the resin composition, so that the suitability for forming a three-dimensional shape thereafter is improved.

As the resin composition to be impregnated, a highly flexible grade of a solution type acrylic resin, an acrylic resin emulsion, an aqueous acrylic resin, a urethane elastomer resin, a polyester resin, an epoxy resin, or the like is used.

<Effect> The veneer is a slice of natural wood of 0.2 to 1 mm. Even if the veneer is of the same lot, the thickness of the veneer is not uniform depending on the tree species and production area. Therefore, when a veneer-plated metal plate bonded to a metal plate is formed into a three-dimensional shape, the veneer breaks, resulting in poor formability.

However, by laminating the veneer on a metal plate and then grinding it, the thickness can be reduced to a uniform thickness of 0.15 mm or less, and the back cracks at the time of veneer production can also be removed, so a more three-dimensional shape Has excellent molding suitability,
Deep molding and complicated molding are now possible.

Also, by impregnating the back surface of the veneer with a support such as a nonwoven fabric or a resin material having excellent flexibility in the veneer and the veneer, a metal plate having excellent three-dimensional moldability can be obtained.

<Example> First, the adhesive 2 (Cemedine G817) 100g / m ² was applied to the metal plate 1 on the surface of aluminum plate the surface of the thickness of 0.8mm as shown in FIG. 1 degreased, on the back surface A 0.2 mm thick rosewood veneer 4 lined with a nonwoven fabric support 3 was bonded and laminated to form a veneer-coated metal plate A.

Next, after the adhesive was dried, as shown in FIG. 2, the surface of the veneer plate 4 of the veneer-coated metal plate A was ground using a wide belt sander B equipped with a polishing belt having a particle size of AA180,
The thickness was set to 0.1 mm.

When the veneered metal plate was subjected to a bending process of 10R, a three-dimensional metal member was obtained without cracks in the veneer.

<Comparative Example> When the veneer-coated metal sheet before grinding in Example 1 was bent at 15R, cracks occurred in the veneer, and a three-dimensional metal member could not be obtained.

<Example 2> In Example 1, before grinding using the belt sander B, the same processing as in Example 1 was performed except that the void portion of the veneer was impregnated with a urethane elastomer resin and dried, and the thickness was 0.1 mm. A veneer-clad metal plate was obtained.

When this veneered metal plate was subjected to a 7R bending process, a three-dimensional metal member was obtained without cracks in the veneer.

<Example 3> In Example 2, grinding with a belt sander was performed.
Except that the thickness of the veneer was changed to 0.8 mm, the same processing as in Example 2 was performed to obtain a veneer-coated metal plate.

When this veneered metal plate was subjected to 5R bending, a three-dimensional metal member was obtained without cracks in the veneer.

<Effect of the Invention> According to the method of the present invention, even if the thickness of the veneer plate varies during manufacture, the surface of the veneer plate is ground after bonding to the metal plate, so that the thickness of the veneer plate can be accurately and uniformly set. , The formability of the three-dimensional shape is improved and stabilized.

In addition, even a tree species that cannot be sliced thinly can be processed to a constant thickness of 0.15 mm or less by grinding after bonding to a metal plate, thereby improving the formability of a three-dimensional shape.

Further, by impregnating the voids of the veneer with resin before grinding, it becomes difficult to produce fuzz at the time of grinding, so that a thin veneer can be ground and the workability is further improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are explanatory views showing the steps of manufacturing a veneered metal plate used for manufacturing a veneered metal member of the present invention. DESCRIPTION OF SYMBOLS 1 ... Metal plate, 2 ... Adhesive 3 ... Support, 4 ... Veneer A: Veneer metal plate, B ... Belt sander

Claims (1)

(57) [Claims] 1. After laminating a veneer made of natural wood sliced to 0.2 to 1 mm on the surface of a metal plate via an adhesive, impregnating with a resin composition, and then grinding the surface of the veneer to 0.15 mm or less A method for manufacturing a veneer-coated metal member obtained by forming a veneer-coated metal plate having a thickness of 3 mm into a three-dimensional shape.