JPS59187801A - 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]

Conventionally, in order to artificially express the wood grain pattern seen in natural wood species such as pine, multiple sheets of bleached and dyed veneer boards were laminated with adhesive and pressed together in a flat or uneven shape. A widely used method was to obtain a composite flitch, which was then sliced to create a wood grain pattern on the surface of the board.

At that time, in order to obtain a wood grain pattern in which the spring wood and summer wood parts repeat alternately, which is seen in ordinary natural wood species, different materials such as nonwoven fabric paper and plastic film were used as materials to express the summer wood part. Alternatively, thinly sliced veneers were used to express the summer wood.

However, the two ingredients have a drawback of poor slicing properties, and have not been widely used in practice. In addition, when using a veneer as a material, this veneer is dyed in advance in the color of the summer wood, but the uniformly dyed veneer has a color similar to that seen in the summer wood of natural tree species such as pine. It was not possible to fully express the density gradient, that is, a continuous change from a dark colored part to a light colored part, and as a result, it was inferior to the natural look and feel. [Objective of the Invention] This invention To provide a method for manufacturing a decorative veneer that expresses the full color density gradient that closely resembles a natural wood grain pattern. purpose.

l [Disclosure of the Invention] The method for producing a decorative veneer of the present invention includes the steps of: slicing all the primary flitches obtained by laminating and press-bonding a plurality of grained veneers with an adhesive; A step of applying a coloring agent to one side of the sliced veneer, and stacking the sliced veneer with the colorant-coated surfaces on top of each other through a spacer and steaming them in a water-filled atmosphere. a step of removing the steaming-dyed veneer, and a step of combining a plurality of the steam-dyed veneers with other material veneers and laminating and press-bonding them with an adhesive to obtain a secondary flitch; The method includes a step of slicing the secondary flitch to obtain a decorative veneer.

Figures 1(a) and 1(f) show the process of sub-ming dyed veneer according to the present invention.
5) As shown in F), multiple sheets of the material veneer 1 are laminated in the flat mold 2 via an adhesive, pressed and bonded to obtain a primary flitch 3, and this is sliced at a predetermined angle. Thickness 02
A sliced veneer 4 of ~12 μm is obtained ((A) to D) in the same figure. Next, after coating one side of the sliced veneer 4 with a dye solution using a roll coater 5, a pair of sliced veneers 4 are stacked with their dye solution coated surfaces on top of each other as shown in FIG. Load through all spacers 6,
This is steamed in steam at a temperature of 90 to 1500C to obtain a steam-dyed veneer.

By steaming the sliced veneer 4 coated with the dye solution on one side, the dye solution penetrates into the resulting steam-dyed veneer 7 in the thickness direction, as shown in FIG. However, a color density gradient is formed that sequentially changes from dark to light.

Such steam-dyed veneer 7-: As shown in the third section or D), it is overlapped with another dyed veneer 8 and bonded together to obtain a whole veneer 9, which is then shaped into a textured type. 10, laminated with adhesive and bonded by pressure to obtain secondary flitch]1,
This figure (D) is obtained by slicing this flitch J1 at a predetermined angle.
A decorative veneer J2 as shown in the figure can be obtained.

Obtained decorative veneer] 2 contains the steam-dyed veneer 7
A summer wood portion 13 corresponding to the above is formed, and this summer wood portion 13 has a blurred appearance that expresses a concentrated gradient of color, and is very similar to the Y-phase portion found in natural tree species such as pine. sense of nature,
The sliced veneer 4 in this invention, which has a natural feel, may be formed using veneers of materials having approximately the same moisture content, or may be formed by appropriately combining veneers of materials with different moisture contents. You may. When using veneers of materials with approximately the same moisture content, color unevenness is formed mainly in the thickness direction of the steam-dyed veneer 7 due to a color concentration gradient, but when veneers of materials with different moisture contents are combined, the thickness In addition to color unevenness in the width direction, color unevenness can be completely formed in the width direction or length direction due to the difference in penetration rate of the dye solution, giving a more natural look.

A decorative veneer with a natural feel can be obtained.

That is, the veneers made of materials having different moisture contents may be alternately combined with high moisture content veneers and low moisture content veneers, or all of them may be randomly combined for a certain shade. As shown in Part 4 or F), the primary flitch 3' obtained by combining high moisture content veneers and low moisture content veneers alternately and gluing them together is completely sliced and sliced veneers. 4 (thickness 0.2
~0.8 mm) f was obtained, which was steamed in the same manner as above (90 to 150°C for 30 minutes to 4 hours), further flinched with a flat mold 14, and sliced into a straight-grained pattern with uneven color. A decorative veneer 15 having the following properties is obtained.

The sliced veneer 4' has a high moisture content area 16 and a low moisture content area J7 as shown in FIG. Part 16
In this case, the dyeing solution penetrates well and is colored in a deep color, but in the low moisture content area 17, the permeability is poor and the dyeing solution is colored only in a light color, thereby making it possible to express color unevenness. In addition, Figure 4 (
Instead of a straight grain pattern like F), use another material veneer (thickness 1 to 3
A decorative veneer with a grain pattern with uneven coloring can also be obtained in the same manner by combining with the method.

Next, an example will be given and explained.

Example]: A primary flitch was obtained by laminating material veneers of Teva 0.8 rm and thickness using an adhesive and bonding by pressure, and this was sliced to obtain sliced veneers.

10% of dye (brown powder) on one side of this sliced veneer.
Total 100 y/t of related solution? The entire mold was applied on each coated surface and steamed at 100° C. for 2 hours. The obtained steam-dyed veneer was used as material I for expressing the pine wood part.
When I sliced the secondary flitch obtained by laminating multiple sheets of veneer, which is a material for expressing the pine spring wood, and bonding them by pressure, I found that the summer wood had changed from dark to light in color. :4. I was able to obtain a similar decorative veneer.

Example 2: An 80% solution of dye (dark yellow powder) was applied to one side of a sliced veneer obtained using a 0.5πm thick Agatis material veneer at 80 f; A decorative veneer closely resembling pine was obtained in the same manner as in Example 1, except for steaming for a period of time.

Example 3: Igem's two types of bleached material veneers (water content 5-25% and water content 30-80%)'! They were alternately laminated in a flat mold using an adhesive and bonded by pressure to obtain a primary flitch, which was then sliced to a total thickness of 0.2 to 0.8 mm to obtain a sliced veneer. A brown water-soluble coloring agent was applied to one side of the sliced veneer, and then the coated sides were overlapped and steamed. The obtained steam-stained veneers in the color of the pine and summer wood parts were laminated alternately with veneers of the material for the representation of the pine and spring wood parts using an adhesive, and were pressed and bonded in a concave-convex mold to obtain a secondary flitch.
This was sliced to obtain a decorative veneer with a pine-like grain pattern.

Example 4: The moisture content of a veneer of material dyed in a predetermined color was reduced to 3.
The primary flitch was adjusted to 0% and 80%, combined alternately, laminated with an adhesive, and pressed and bonded with a flat mold, and the resulting primary flitch was sliced into 0.8 mm thickness to obtain a sliced veneer. Ta. Dye solution 'fc100p on one side of this sliced veneer.
/m', and the entire coated surface was laid down and steamed at 110° C. for 2 hours. The obtained steam-dyed veneer and the material veneer are combined and pressed together in a flat mold to obtain a secondary flitch, which is then sliced so that the stripes are within the wood grain as shown in Figure 4 (F). A straight-grain decorative veneer with a buried feel was obtained. This decorative veneer closely resembled natural wood.

〔Effect of the invention〕

According to this invention, it is possible to express a color density gradient that closely resembles the grain pattern of natural wood species.

[Brief explanation of drawings]

Fig. 1 (5) to F) is an explanatory diagram of the process of obtaining a steam-dyed veneer according to the present invention, Fig. 2 is a perspective view of a steam-dyed veneer, and Fig. 3 (A) to I) FIG. 4 is an explanatory diagram of the process of obtaining a decorative veneer using teamed dyed veneers. FIG. 1... Material veneer, 3... Primary flitch, 4... Sliced veneer, 6... Spacer, 7... Steam dyed veneer, 8... Other material veneer, 11...Second flitch, ]2゜15...Decorative veneer 2nd to 1 ↓ (A) ,” / (C) (D)
Figure 3j °°' (F) 4th L! 4

Claims (3)

[Claims] (1) A step of slicing a primary flitch obtained by laminating and press-bonding a plurality of material veneers via an adhesive, and a step of applying a coloring agent to one side of the obtained sliced veneer, A step of stacking the sliced veneers with their colorant-coated surfaces mutually and stacking them via spacers and steaming them in water vapor to obtain steam-dyed veneers; A method for manufacturing a decorative veneer, comprising the steps of: obtaining a secondary flitch by laminating with a veneer using a combination adhesive; and slicing the secondary flitch to obtain a decorative veneer. (2) Manufacture of a decorative veneer according to claim (1), which is obtained by slicing a primary flitch obtained using a plurality of veneers made of a material veneer having substantially the same moisture content. Method. (3) The decoration according to claim (1), wherein the sliced veneer is obtained by slicing a primary flitch obtained by combining a material veneer with a high moisture content and a material veneer with a low moisture content. Method of manufacturing veneer.