JPH0436042B2 - - Google Patents

Description

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

Conventionally, in order to reproduce the wood grain pattern of the spring wood and summer wood parts of natural boards on decorative veneers, bleached material veneers are dyed in the spring wood color to obtain spring wood color-dyed veneers. A sheet-like dissimilar material such as paper or non-woven fabric is dyed in a summer wood color to obtain a summer wood color sheet member, and these spring wood color dyed veneers and a summer wood color sheet member are adhered via a colorless adhesive. A composite veneer is obtained, and a plurality of composite veneers are laminated and pressure-bonded using an adhesive so that the summer wood-colored sheet-like members are aligned in a predetermined direction to obtain a composite frit. The decorative veneer 1 shown in FIG.
As shown in the figure, the cut surface of the spring wood color dyed veneer 2 represents the spring wood portion 2a, and the cut surface of the summer wood color sheet-like member 3 represents the summer wood portion 3a. 4 is a colorless adhesive that is interposed between the spring wood color dyed veneer 2 and the summer wood color sheet-like member 3 when forming the composite veneer.

However, the above method had the following drawbacks.

(1) In order to obtain the summer wood-colored sheet member 3, a sheet-like different material such as paper or nonwoven fabric must be dyed in the summer wood color, which requires dyeing labor and makes manufacturing complicated.

(2) The density difference in the transition area 5 from the spring wood area 2a to the summer wood area 3a is too pronounced, and the natural feel of the wood grain pattern is impaired.

(3) The dye cost for dyeing the sheet member 3 in summer wood color is expensive.

(4) Since the summer wood-colored sheet member 3 is not profitable unless it is produced in large quantities, it is difficult to change the color quickly even if it becomes necessary.

Therefore, an object of the present invention is to provide a method for producing a decorative veneer that can easily and inexpensively produce a decorative veneer with a natural-looking wood grain pattern, and also allows the color of the summer wood portion to be easily changed. That's true.

The outline of this invention will be explained using FIGS. 3 to 5. That is, the method for manufacturing this decorative veneer involves decolorizing the raw material veneer 6 shown in FIG. 3a, or dyeing it in the spring wood color with a staining solution 7 as shown in FIG. 3b, and then dyeing it as shown in FIG. 3c. A veneer 8 for spring wood is obtained. Next, a pigment-permeable sheet-like member 10 such as paper or nonwoven fabric is adhered to the spring material veneer 8 via a summer material color pigment-containing adhesive 9 to form a composite veneer 11.
get. Further, the sheet-like member 10 is such that the summer wood color pigment penetrates in the thickness direction at a substantially uniform concentration. In this case, when the sheet-like member 10 is pasted on the spring wood veneer 8, the summer wood color pigment in the adhesive 9 penetrates into the sheet-like member 10 in the thickness direction at a substantially uniform concentration, and the same The summer wood color pigment also penetrates into the surface layer of the spring wood veneer 8 with a gentle concentration gradient such that the concentration gradually becomes lighter toward the inside of the veneer. Thereafter, as shown in FIG. 3d, a plurality of composite veneers 11 are laminated with an adhesive so that the sheet-like members 10 are aligned in a predetermined direction, and the mold 1
2, the assembled fritches 13 are obtained by pressure bonding.
Finally, as shown in FIG. 3e, this assembled fritch 13 is sliced with a knife 14 in a predetermined direction intersecting the laminated surface thereof, thereby obtaining a decorative veneer 15 shown in FIG. 4. As shown in FIG. 5, the decorative veneer 15 thus formed has a dark-colored summer wood portion 10a expressed by the cut surface of the sheet-like member 10, and a cut surface of the surface layer portion of the spring wood veneer 8. A transition part 8a from the summer wood part to the spring wood part is expressed, and a spring wood part 8b is expressed by the cut surface of the spring wood veneer 8 other than the transition part 8a.

As a result of this configuration, the following effects occur.

(1) When bonding the sheet-like member 10 onto the spring wood veneer 8 via the adhesive 9 to form the composite veneer 11, the adhesive 9 should contain a summer wood color pigment in advance. The sheet-like member 10 can be colored in the color of summer wood, and there is no need to dye the sheet-like member 10 made of paper, non-woven fabric, etc. in the color of summer wood. Manufacture of the veneer 15 becomes easy.

(2) Between the summer wood part 10a and the spring wood part 8b of the decorative veneer 15, there is a transition part 8a where the color density gradually becomes lighter from the summer wood part 10a toward the spring wood part 8b. It is possible to reproduce wood grain patterns with an extremely natural feel.

(3) The cost of the summer wood color pigment added to the adhesive 9 when forming the composite veneer 11 is cheaper than the cost of conventional dyes used to dye paper, non-woven fabrics, etc. in the summer wood color. The cost is also low.

(4) Even if it becomes necessary to change the color of the summer wood portion 10a, it can be easily done by simply changing the composition of the summer wood color pigment added to the adhesive 9.

Next, one embodiment of the present invention will be described. In other words, spring wood veneer 8 (width 600 mm,
rayon non-woven fabric 10 (width and length are the same as the spring wood veneer 8) with a length of 400 mm and a thickness of 1.0 mm) and a summer wood color pigment-containing adhesive 9 (application amount 1.0~
1.1 g/m ² ) and pressed at a pressing pressure of 30 kg/cm ² to obtain a composite veneer 11. A plurality of these composite veneers 11 are laminated with adhesive and pressed together under a press pressure of 18 kg/cm ² to form a composite frit 1.
3 was obtained, and this was sliced to obtain a decorative veneer 15. In the formed decorative veneer 15, the cut surface of the nonwoven fabric 10 expresses a dark-colored summer wood portion 10a, and the cut surface of the surface layer of the spring wood veneer 8 expresses a transition portion 8a from the summer wood portion to the spring wood portion. The spring wood portion 8b was expressed by the cut surface of the spring wood veneer 8 other than the transition portion 8a, making it possible to reproduce a wood grain pattern with an extremely natural feel.

As described above, according to the method for manufacturing a decorative veneer of the present invention, by using a pigment-permeable sheet-like member, a certain width can be secured in the summer material part, and the permeability of the spring material veneer can be ensured. A transition area where the color density gradually becomes lighter can be expressed, and a decorative veneer with a natural-looking wood grain pattern can be easily and inexpensively produced. Also,
An effect is that the color of the summer wood part can be easily changed using adhesive.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional decorative veneer, Fig. 2 is a sectional view thereof, Fig. 3 is an explanatory diagram of a manufacturing method showing an outline of the present invention, and Fig. 4 is a plan view of a decorative veneer obtained by the method. 5 is a sectional view taken along the line V-V in FIG. 4. 8... Veneer for spring material, 9... Adhesive, 10... Sheet-like member, 11... Composite veneer, 13... Laminated fritsch, 15... Decorative veneer.

Claims (1)

[Claims] 1 A pigment-permeable sheet-like member in which the summer wood color pigment permeates in a substantially uniform concentration in the thickness direction is attached onto a veneer for spring wood via an adhesive containing the summer wood color pigment, thereby producing the summer wood color pigment. A composite veneer forming process in which a composite veneer is obtained by infiltrating the entire sheet-like member and the surface layer of the spring veneer, and a process of forming a plurality of these composite veneers so that the sheet-like members are aligned in a predetermined direction. A method for producing a decorative veneer, comprising: a step of forming a frit assembly by laminating and press-bonding it with an adhesive to obtain a frit assembly; and a slicing step of slicing the frit assembly from a predetermined direction intersecting the laminated surface thereof.