JPH025162B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing decorative veneers.

A plurality of material veneers are laminated and pressure-bonded using an adhesive to obtain a composite frit, and this composite frit is sliced in a direction intersecting the laminated surface, and the cut surface of each material veneer is made of natural wood. In a method for obtaining a laminated decorative veneer that resembles a wood grain pattern, the adhesive used for gluing the material veneers is colored in the color of summer wood in order to express the summer wood portion in the reproduced wood grain pattern. Then, the cut surface of this summer wood color adhesive layer can be used to express the summer wood part, or the surface of the material veneer can be printed with a summer wood color dye, and the cut surface of this summer wood color printed layer can be used to express the summer wood part. Conventionally, the method of expressing the part has been adopted.

However, in the case of laminated decorative veneer obtained by such a method, as shown in the longitudinal cross-sectional view in Fig. 1A, the dark colored layer 1a representing the summer wood is buried in the inner layer of the veneer. The part of the veneer that is exposed is reflected on the surface of the veneer 1 through the spring wood part 1b, which is expressed as a light colored or uncolored wood part, and the width of the summer wood part becomes wider as shown in the plan view in Figure B. However, it has the disadvantage of spoiling the natural feel of the reproduced wood grain pattern.

In order to solve this problem, as shown in the longitudinal cross-sectional view in Fig. 2A, spring wood is added between the dark colored layer 1'a representing the summer wood and the spring wood 1'B. Concealing layer 1'c made of a colored adhesive with low translucency, etc.
It is possible to interpose a method in which the concealing layer 1'c blocks the transmission of the dark colored layer 1'a from the inner layer portion of the veneer to the surface.

However, in the laminated decorative veneer 1' obtained in this way, the penetration of the dark colored layer 1'a from the inner layer of the veneer to the surface is completely suppressed.
The summerwood part will be expressed only by the cut surface of the dark colored layer 1'a exposed on the surface of the veneer, and the reproduced summerwood part will be narrow in width as shown in Figure 2B. This has the disadvantage that the transition area, which has a subtle change in color tone from the spring wood to the summer wood, which is seen in natural wood, is not clearly expressed, which significantly impairs the natural feel.

Therefore, an object of the present invention is to provide a method for manufacturing a decorative veneer that can easily reproduce a summer wood section with a rich natural feel.

One embodiment of the invention is shown in FIGS. 3A-I. That is, this decorative veneer manufacturing method is to obtain a laminated decorative veneer with a grain pattern expressed on the material surface through the following steps.

(1) Wood veneer 2 is treated with spring wood color dyeing bath (dye 1.0%)
The veneer 2' is dyed with spring wood color (Fig. 3A, B).

(2) A colored adhesive 4 colored in the spring wood color and having low translucency is applied to one side of the spring wood color-dyed veneer 2' (FIG. C).

(3) Separately, a summer color ink layer 6 and a transparent resin layer 7 are layered and coated in this order on one side of a release sheet 5 made of a polyester sheet, and a transfer sheet 8
(Figure D). The transparent resin layer 7 is made of cellulose nitrate, and the summer material color ink layer 6 is composed of three ink layers so that the color becomes lighter from the side of the release sheet 5 toward the upper layer.

(4) The laminated surface side of the transfer sheet 8 is adhered to the adhesive coated surface of the spring wood color dyed veneer 2' and pressed, the release sheet 8 is peeled off, and the spring wood color dyed veneer is finished. A transparent resin layer 7 and a summer material color ink layer 6 are transferred onto one side of the substrate 2' (the adhesive coated side with low translucency) (see E and F in the same figure).

(5) A plurality of pieces of the spring wood color-dyed veneer 2' that have been subjected to the transfer treatment are laminated with an adhesive so that the transfer-treated surfaces are aligned upward or downward, and a concave-convex mold 9 is formed.
Pressing and bonding is performed to obtain the concavo-convex assembly fritches 10 (G in the same figure).

(6) The obtained concavo-convex assembly fritsch 10 is sliced from a predetermined direction intersecting the laminated surface, so that the cut surface of the summer wood color ink layer 6 and the wood part dyed in the spring wood color alternate in a grain pattern. A laminated decorative veneer 11 with a grain pattern expressed on the surface of the material is obtained (H and I in the same figure).

In this way, the summer material color ink layer 6, the transparent resin layer 7
Using the transfer sheet 8 obtained by laminating and coating on the release sheet 5 in the following order, apply the transparent resin layer 7 to the surface of the springwood color-dyed veneer 2' via the colored adhesive 4 with low translucency. Since the summer wood color ink layer 6 is transferred, in the final laminated decorative veneer 11, a part of the summer wood color ink layer 6 that expresses the summer wood portion is buried in the inner layer of the veneer. is projected on the surface of the veneer through the transparent resin layer 7, while the colored adhesive layer 4 acts as a concealing layer to suppress the transmission of the summer wood colored ink layer 6 to the surface of the veneer, thereby controlling the summer wood portion to a predetermined area. It can be expanded to a width of 100 cm, allowing you to express summer wood with a rich natural feel.

Further, the summer material color ink layer 6 is formed on a release sheet 5
It is possible to create a multi-layered structure in which the color tone becomes lighter towards the top, making it possible to add subtle color changes to the summerwood area, and making it extremely easy to express transition areas. , it is possible to create a laminated decorative veneer with a more natural feel.

As described above, the method for manufacturing a decorative veneer of the present invention includes an adhesive application step of applying an adhesive with low translucency to one side of a material veneer for spring material, and a step of applying an adhesive with low translucency to one side of a release sheet in summer wood color. a transfer sheet forming step of obtaining a transfer sheet by laminating and coating an ink layer and a transparent resin layer in this order; and adhering the transparent resin layer side of the transfer sheet to the adhesive-coated surface of the spring material veneer; a transfer treatment step of transferring the transparent resin layer and the summer material color ink layer, and a step of transferring the plurality of the transferred spring material material veneers using an adhesive so that the transfer treated surfaces are aligned in a predetermined direction. Since the method includes a step of forming a fritch by laminating and press-bonding it to obtain a fritch, and a slicing step of slicing the fritch in a predetermined direction intersecting the laminated surface thereof, it is possible to easily create a summer wood part with a natural feel. It has the effect of being reproducible.

[Brief explanation of drawings]

Figures 1A and B are longitudinal sectional views and plan views of essential parts of conventional laminated decorative veneers, respectively, and Figures 2A and B are longitudinal sectional views of essential parts of other conventional laminated decorative veneers. 3A to 3I are process explanatory views showing one embodiment of the present invention, and FIG. 4 is a longitudinal cross-sectional view of the main parts of a decorative veneer assembly obtained by the process. 2...Wood material veneer, 2'...Spring wood color dyed veneer,
3...Spring wood color dyeing bath, 4...Colored adhesive, 5...
Release sheet, 6... Summer material color ink layer, 7... Transparent resin layer, 8... Transfer sheet, 9... Concave and convex mold, 10
...Irregular laminated fritsch, 11...Laminated decorative veneer.

Claims (1)

[Claims] 1. An adhesive application step of applying an adhesive with low translucency to one side of a veneer of material for spring material, and a layer of summer material color ink and a transparent resin layer on one side of a release sheet in that order. A transfer sheet forming step in which a transfer sheet is obtained by laminated coating; and a transfer sheet forming step in which the transparent resin layer side of the transfer sheet is adhered to the adhesive-coated surface of the spring material veneer to form the transparent resin layer and the summer material color. A transfer process of transferring the ink layer, and laminating and press-bonding a plurality of the transfer-treated spring material veneers using an adhesive so that the transfer-treated surfaces are aligned in a predetermined direction to form an assembled fritsch. A method for manufacturing a decorative veneer comprising: a step of forming a frit assembly to obtain a frit; and a slicing step of slicing the frit assembly in a predetermined direction intersecting a laminated surface thereof. 2. The decorative unit according to claim 1, wherein the summer material color ink layer of the transfer sheet is formed by laminating and coating a plurality of ink layers so that the color becomes lighter as the layers move upward from the release sheet side. Method of manufacturing the board.