JPS5845930B2 - Manufacturing method of artificial decorative veneer - Google Patents

Description

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

Material veneers such as sliced veneers and rotary veneers obtained from logs are prone to cracks along the fiber direction at both ends corresponding to the wood ends, and therefore material veneers with such cracks are They were repaired by joining them with tape, hot melt, adhesive, etc.

However, paper tape and hot melt tend to peel off when wet, and when such modified veneers are dyed, they have the drawback of causing poor dyeing at the joints.

Furthermore, when bonding is performed using an adhesive, there is a drawback in that cracks are likely to occur near the bonded portion.

In particular, when veneers are bonded with paper tape, when these are laminated and bonded, poor adhesion can easily occur at the joints caused by the paper tape, and furthermore, the material veneers may be pressed after being laminated and bonded, resulting in deformed flitches. In the process of slicing this to obtain veneers, as mentioned above, in the veneer layers bonded and repaired with paper tape, the cracks will expand during the compression process using the uneven press, which will not only cause adhesion failure, but also In the veneer obtained by such flitch slicing, a layer with enlarged cracks appears, which increases the incidence of defective products and impairs yield.

Therefore, the purpose of this invention is to dye and bond.

Uneven dyeing due to processing such as deformed flitch processing.

To provide a method for manufacturing an artificial decorative veneer that prevents defects such as poor adhesion and grain, improves yield, and has a good natural feel.

A first embodiment of this invention will be described.

That is, as shown in Fig. 1, this artificial decorative veneer manufacturing method involves stitching together the butted portions of material veneer pieces 1 to 3 of different colors with thread 4 to form an integrated material veneer. Board 5
It is manufactured by forming a plurality of veneers 5 of this material by normal means, bonding and pressing them to form a flitch, and further slicing them.

Three to five veneer pieces can be sewn together, and the formed material veneer generally has a thickness of 350 to 700 rrtIrL.

There are no restrictions on the type of wood (applicable to all types of wood).

Sewing is done with an industrial □synth, but the sewing speed is 500
Needles/min - 6000 stitches/min is suitable, and the sewing types include single needle lockstitch, double needle lockstitch, zigzag stitch, pattern zigzag stitch, double chain stitch,
The stitch size is 1w71~20mm, including chain stitch and blind stitch.
is appropriate.

The sutures used for construction are nylon, polyester, cotton,
hemp.

Materials used for general fiber suturing, such as silk, can be used.

In addition, when performing a dyeing treatment, cotton and linen with good dyeability are suitable.

Also, the thread diameter can be applied in the range of 20μ to 1000μ, but preferably the thickness is 50μ to 500μ, #50 in Japanese symbol.
No. 1 to No. 100 are preferable.

Also, it is appropriate for the hands to be numbers 11 to 14 in Japanese symbols.

Further, the conditions for the material veneer suitable for such sewing are specific gravity: 0.2 to 0.9. Thickness: 0.2 to 3.0 m, and dyed veneer pieces can be used as the veneer pieces 1 to 3.

With this structure, according to this manufacturing method, the material veneer pieces 1 to 3 from which cracked parts and easily breakable parts have been removed can be formed to form the material veneer 5, which is better than the conventional method. This makes it possible to effectively utilize raw wood, and also to form a material veneer 5 without defective dyeing, defective adhesion, or openings, thereby improving yield.

Moreover, since the diameter of the sewing thread used in the construction is small (0.15 mm or less), it does not give any foreign body feeling and does not interfere with the natural feel of the manufactured decorative veneer.

Moreover, by making the colors of the veneer pieces 1 to 3 different from each other, the wood grain pattern of the decorative veneer manufactured by slicing from the uneven deformed flitch has dark colored areas as shown in Figure 2. X, intermediate color portion Y, and light color portion Z appear in each annual ring layer, and these shading and blurring are achieved at a boundary with a color difference ΔE of about 2), producing a decorative veneer with a multicolored feel that is close to natural. The Rukoto.

Such multicolor feeling makes it possible to produce color variations that are close to natural.

A second embodiment of this invention will be described.

That is, this method for producing artificially decorated veneer, regarding the mutual color difference between the material veneer pieces in the first embodiment,
This embodiment is characterized by the fact that the adjacent veneer pieces are made of different wood species, and the other configurations are the same as the first embodiment.

The veneer pieces of this material are rotary sliced or sliced from, for example, Labra wood, Antelimas wood, or Ayuse wood to form veneer pieces a, b, and c with a width of 20 mm to 200 m, and the adjacent mutually Sewing different tree species.

By dyeing such a material veneer 7, creating flitches with irregularities and slicing it, it is possible to obtain veneer pieces a to c that are different for each annual ring layer, as shown in Fig. 4. In the spring wood portion of the wood, the color and expression of the vessels vary depending on the tree species, and it is possible to obtain a natural feel that closely resembles natural precious woods such as quince, rose, and ebony.

Other effects are similar to those of the first embodiment.

As described above, the method for manufacturing artificially decorated veneer of this invention is as follows:
Multiple veneer pieces of different colors are sewn together to form a single veneer of material, which is then laminated and pressed together, which eliminates dyeing defects and improves yield. do.

In particular, if the colors of the veneer pieces are different from each other, a multicolored effect can be realized, giving a more natural look.Also, if the colors are varied depending on the tree species, the expression of the vessels in the spring wood can be improved. It is possible to produce products that resemble natural wood in different shades.

Below are examples.

Example 1 (corresponding to the first embodiment): The veneer pieces A, B, and C formed as shown in the table above were sewn with DP11 or
A veneer was obtained by sewing with a sewing machine using a No. 14 needle.

Apply this with a urethane-modified adhesive in an amount of 100 to 12
A veneer with a rosewood pattern was produced by gluing, pressing, and slicing in a length of 097 m2.

As a result, a natural feeling with shading and shading was obtained as shown in Fig. 2.

Example 2 (corresponding to the second embodiment): The veneer materials were made of Labra wood, Antelimas wood, and Ayuse wood, each with a thickness of 1. Ommt width 100mm x length 250
0 mm and boiled for 3 hours at a bath ratio of 40 with a dyeing agent of 0.5% concentration (Suminor Milling Brown 3G (manufactured by Sumitomo Chemical Co., Ltd.) to form a veneer piece, and Gunze spun yarn (No. 50, C
Using a sewing machine, stitch 4 points in a zigzag manner using sewing machine thread (395) to make a 700x2500mm veneer, and then use Bond K.
U224 (manufactured by 7 Nishi) adhesive (application amount xoo, y/
i) Laminated and bonded, dyed veneer moisture content 70%, press pressure 1
0K'! ' / ca to create a concave-convex deformed flitch, and when sliced, it was possible to express a springwood part that closely resembles a natural Indian rose.

Example 3 (corresponding to the second embodiment): Slice the wood types Labra wood, Antelimas wood, Erima wood, and Ayus wood into board thicknesses of 1.0 mm or 0.75 mm, and
A veneer piece having a width of 0-200 mm and a length of 2500 mm was formed and manufactured under the conditions of Example 20.

The results were similar to Example 2.

Example 4 (corresponding to the second embodiment): The material veneer was the same as in Example 1, the dyeing agent was Sinafast Yellow 2RL0.5, the yarn was Gunze Spun yarn (No. 50, colorless), and other conditions were as follows. The same procedure as in Example 2 was carried out.

As a result, we were able to express spring wood that closely resembles natural teak.

Note that a flitch can also be created by sewing veneer pieces with different thicknesses as shown in FIG. 5 to create a natural look.

In other words, it is appropriate that the plate thickness difference is within 0.21rtm,
The amount of adhesive applied during lamination and pressing is changed between the thick veneer piece 2 and the thin veneer pieces 1 and 3 of the material veneers.

In this way, as shown in Fig. 6, a dark colored part (adhesive layer) A, an intermediate part (joint part) B, and a light colored part (material veneer layer) C are obtained for each annual ring layer based on the thickness difference, This creates a multicolored feel.

Furthermore, as shown in FIG. 7, the wood grain (curvature D) is obtained everywhere due to the step 6 at the butt portion of the veneer pieces 1 to 3, which further enhances the natural feel.

An example of this is shown below.

In other words, the width dimension is 200 mm, the plate thickness is 0, 8 trtm
2 pieces of veneer, width 300mm, thickness 1. 0 m veneer piece, width dimension 200 mm, plate thickness 0. 8 m of veneer pieces were sewn together using Gunzespun sewing thread with needle thread No. 50 and bobbin thread No. 80 with a DP No. 11 or No. 14 needle, and the resulting material veneer was dyed. .

After staining, 0. 130 for the 8 tran thick veneer piece part
~140g/m2 coating amount, 100~120~1.0mm thick veneer piece part. /? ? Adhesive was applied in an amount of 72 mm, laminated, pressed to form irregularities, and sliced.

As a result, a wood grain with shading and undulations as shown in Figures 3 and 4 was expressed.

[Brief explanation of drawings]

Fig. 1 is a plan view of a material veneer according to the first embodiment of this invention, Fig. 2 is a plan view of a decorative veneer manufactured from the material veneer, and Fig. 3 is a plan view of the material veneer according to the second embodiment. Figure 4 is a perspective view of the veneer, Figure 4 is a plan view of a decorative veneer manufactured from the material veneer, Figure 5 is a sectional view of the applied example material veneer, and Figures 6 and 7 are the material veneer. FIG. 2 is a plan view of a decorative veneer manufactured from a board. 1, 2.3... Material veneer piece, 4... Thread, 5... Material veneer.

Claims (1)

[Scope of Claims] 1. A plurality of veneer pieces of different colors are sewn together to form a single material veneer, and a plurality of tR layers and adhesives are applied to this material veneer to form a flitch. A method for producing artificial decorative veneer, which comprises slicing. 2. The method of manufacturing an artificial decorative veneer according to claim 1, wherein the plurality of veneer pieces have different colors due to different wood species.