JPS59165602A - Manufacture of decorative veneer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 〔Technical field〕 This invention relates to a method for manufacturing decorative veneers.

[Background technology]

(1) Conventional decorative veneers have been manufactured by slicing flitches obtained by laminating a plurality of dyed veneers with an adhesive and bonding them by pressure. For this reason, it was extremely difficult to express on the board the variation in color seen in natural rose wood or the tartness seen in pine wood.

[Purpose of the invention]

This invention creates a natural look that expresses color variation and subtlety.
The purpose is to provide a method for manufacturing a decorative veneer with a rich natural feel.

[Disclosure of the invention]

The method for manufacturing a decorative veneer of the present invention includes the steps of laminating and press-bonding a plurality of material veneers to obtain a primary flitch;
Next, a step of slicing the flitch from a predetermined direction to obtain a sliced veneer, a step of applying a dye to one side of the sliced veneer, and a step of steaming the sliced veneer coated with the dye to obtain a steam-dyed veneer. the steam-dyed veneer alone or in combination with other material veneers is laminated via an adhesive and pressure bonded to obtain a secondary flitch (QX); The method includes a step of slicing from.

The outline of this invention will be explained based on FIG. 1(3) or Il. That is, a rotary or sliced veneer is bleached and dyed as necessary and dried, and an adhesive 2 is applied to the raw material veneer 1 using a roll coater 3.
Laminate and press-bond inside (Fig. 1 (Al or C))
. The obtained primary flitch 5 is sliced to a thickness of 0.1 to 1 m+ from the loading surface in the width direction or the longitudinal direction, preferably at an angle, to obtain sliced veneers 6. This sliced veneer is passed through a roll coater 7 as shown in Fig. 1 (El), coated with highly concentrated dye 8 on one side, and then placed in a steam chamber 9 shown in Fig. 1 (Fl) at 80 to 150°C. Steaming is carried out in steam for 15 minutes to 2 hours.The obtained steam-dyed veneer 10 is pasted onto the raw material veneer 1 to form a composite.This composite veneer 1.10 is placed inside the uneven mold 11. A secondary flitch 12 is obtained by laminating and press-bonding with an adhesive, and a decorative veneer 13 is obtained by slicing this from a predetermined direction.

By applying highly concentrated dye 8 on one side of the sliced veneer 6 and steaming it, as shown in FIG.
The dye 8 becomes difficult to penetrate around the adhesive layer 14 in the sliced veneer 6, resulting in color unevenness, and the steam-dyed veneer 10 is dyed darkly on the dye-applied side and lightly dyed on the opposite side. Ru. Therefore, the decorative veneer 13 obtained by using the steam-dyed veneer 10 tends to have color variations, and can easily express the resinous feel of pine or the like. The degree of dyeing can be appropriately determined depending on the amount of dye 8 applied, steam temperature, and steaming time.

Incidentally, in order to obtain the primary flitch 5, the flat mold 4 was made into 7 flitches, but a concavo-convex mold may also be used.

Further, the combination of the steam-dyed veneer 10 and the raw material veneer 1 (see FIG. You may also obtain

Next, the present invention will be explained in detail by giving examples.

Example 1: After decolorizing a Tepa veneer (1.0+on thickness), it was made into a composite flitch to obtain a primary flitch, which was then sliced at an angle of 1/100 in the width direction to obtain sliced veneers with a thickness of 0.5 mm. I got it. A water-soluble dark brown dye was applied to one side of this sliced veneer using a roll coater at 6.5.3 t/rr? (
Apply at 6f/shaku2) and then steam for 1 hour at a temperature of 95°C. The obtained steam-dyed veneer was made into an assembled flitch to obtain a secondary flitch, which was then sliced to obtain a decorative veneer. The decorative veneer had a pine-like glow.

Actual example 2: After decolorizing Aius veneer (0.8wn thickness),
The assembly was made into a 7-thick piece to obtain a primary flitch, which was sliced in the longitudinal direction at an angle of 1t2/100 to obtain a sliced veneer with a thickness of 1.0 slices. Dye 87.12 f/r? was applied to one side of this sliced veneer in the same manner as in Example 1. It was applied using a CsV scale 2) and then steamed for 2 hours at a temperature of 100°C. A decorative veneer expressing the color variation of rosewood was obtained in the same manner as in the actual example below.

Next, we made a decorative veneer expressing a concentrated three-dimensional conduit (5) Explain how to proceed.

Conventionally, in order to express a concentrated three-dimensional conduit, a veneer made of a material such as frilled wood, which has a large conduit diameter and high conduit density, and a material veneer of the color of spring wood, which has no conduit, are combined to form a 7-rich structure. The veneers were then sliced, but cracks were likely to occur because the expansion and contraction rates of the two veneers differed greatly due to changes in moisture content.

Therefore, as shown in FIGS. 3 (to) to IF), after coloring the material veneer 15 for expressing the concentrated three-dimensional conduit part (pore area),
Polyethylene glycol methacrylate 16 (hereinafter referred to as P
The material is impregnated with EGMA (referred to as EGMA), hardened, and combined with a spring material veneer 17 colored in the color of the spring material, and then formed into an assembled flitch using a concavo-convex mold 18. Next, the obtained flitch 19 was sliced (indicated by a dashed line) to obtain a decorative veneer 21 having a concentrated three-dimensional conduit portion 20.

In this way, the expansion and contraction of the material veneer 15 for expressing the concentrated three-dimensional conduit, whose expansion and contraction rate due to changes in moisture content is larger than that of the spring material veneer 17, is reduced by the impregnated and hardened PEGMA, thereby preventing cracks, etc. (6) It is possible. Therefore, by using this method, a wood grain pattern having concentrated three-dimensional conduits such as Keyaki 9, Nara, etc. can be manufactured easily and with high productivity.

Reference example: Agatis 1° Omm Corotary lace veneer zelkova veneer dyed in the spring wood color tone is designated as A. Elima 0
．． A 6cm thick rotary lace veneer was dyed in the zelkova color, impregnated with 5% by weight of BPOO added to PEGMA, and heated at 90°C for 10 minutes. A
, B on A3 sheets, 81 sheets and A4 sheets. By slicing the flitch obtained by laminating and press-bonding 81 pieces of flitch in a concave-convex mold using an adhesive, a sliced veneer with concentrated three-dimensional conduits that closely resembles natural zelkova can be obtained. ,
No cracking occurred even after drying.

[Brief explanation of drawings]

FIG. 1 is a process explanatory diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the penetration of dye into a sliced veneer, and FIG. 3 is a process explanatory diagram for expressing a concentrated three-dimensional conduit. 1...Material veneer, 2...Adhesive, 5...Primary flitch, 6...Sliced veneer, 8...Dye, 9...
Steam room, 1°...Steam dyed veneer, 12...
Secondary flitch, 13... Decorative veneer 7

Claims (1)

[Claims] A step of laminating a plurality of material veneers via an adhesive and press-bonding them to obtain a primary flitch, a step of slicing the primary flitch from a predetermined direction to obtain a sliced veneer, and a step of obtaining a sliced veneer, and the sliced veneer. a step of applying a dye to one side of the veneer, a step of steaming the sliced veneer coated with the dye to obtain a steam-dyed veneer, and adhering the steam-dyed veneer alone or in combination with veneers of other materials. A method for manufacturing a decorative veneer, comprising the steps of: obtaining a secondary flitch by laminating and press-bonding via an agent; and slicing the secondary flitch from a predetermined direction.