JPS5818203A - Manufacture of artificial decorative veneer - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] The present invention relates to a method for manufacturing artificially decorated veneers, and more specifically, it relates to an adhesive used in making artificially decorated veneers. Defects can be prevented,
We aim to contribute to the development of this industry by providing a general method for manufacturing artificial decorative veneers with excellent slicability.

Conventionally, this type of artificial decorative veneer was obtained by laminating a large number of material veneers with a moisture-curing urethane resin adhesive interposed between them, and then pressing them together to create an artificial flitch. After that, it was an omniscient technique to cut the flitch into thin slices.

However, in the conventional manufacturing method described above, if the surface roughness of the veneer used is poor, it is difficult to apply the adhesive evenly evenly with a small amount, resulting in poor adhesion in the resulting artificial flitch. It had some easy problems. On the other hand, if you apply a large amount of adhesive to prevent defects, the thickness of the adhesive layer will increase, and the hardness of the adhesive will be high, resulting in a difference in hardness between the wood part and the adhesive layer. becomes larger,
As a result, the slicability of the artificial veneer becomes poor when slicing the artificial veneer, and the resulting artificial decorative veneer suffers from slicing defects, such as slicing marks and missing parts. The present invention has been made for the purpose of eliminating all such drawbacks in the conventional method for manufacturing artificially decorated veneers, and is extremely novel and extremely useful.

Hereinafter, the method for manufacturing the artificially decorated veneer of the present invention will be described in detail.

In the present invention, logs of White Seraya wood, Rapula wood, Agatis wood, and Aius wood are rotary cut or sliced to an appropriate size Kl! Thickness obtained by cutting Q, 5
A material veneer with a length of m/-1 to 2.0 m is immersed in a decolorizing solution as needed to perform a decolorizing treatment, and then dyed to the same color or approximately the same color as the desired natural wood color. In order to dye, the veneer is immersed in a dyeing solution or applied with a dyeing solution for dyeing, and then the material veneer is introduced during the drying process and dried to a moisture content of 309G to 70G. Next, a moisture-curable urethane resin adhesive KMEK or PCl or a mixture of MEK and THF with a small amount of vinyl chloride resin monomer is added, and vinyl chloride resin powder is added to adjust the viscosity of the adhesive. Coating is applied to one side, and a large number of sheets are laminated, and then a pair of presses are applied from above and below, each having a concave and convex shape with a male relation to
The adhesive is cured and an artificial flitch with a convex and concave shape is created by pressing the flitch down.Then, the flitch is sliced into thin pieces of 0.2 bumps/+11 to Q, 5111/ll to create a wood grain pattern. It is possible to obtain an artificially decorated veneer that appears.

In the present invention, when using an agathis material veneer with a moisture content of 30 to 60 m, the blending ratio of the adhesive is, for example, MEK5 to 100 parts by weight of the moisture-curing urethane resin adhesive. Parts by weight, vinyl chloride resin powder 5
%, or a mixture of 1 to 5 parts of vinyl chloride resin monomer, 50 parts of MEK, and 50 parts of THK, or 5 parts of vinyl chloride resin powder per 100 parts by weight of the moisture-curing urethane resin adhesive. In this case, approximately 10,017 Nl is suitable as the application amount.Also, when using a veneer made of Aius material whose moisture content is controlled to between 40 and 70, the compounding ratio of the adhesive is, for example, a moisture-curing adhesive. pc for 100 parts by weight of urethane resin adhesive
ut parts by weight, vinyl chloride resin powder theoretical parts by weight, and in this case approximately 1101/d is suitable for the coating amount.Also, when providing an ink transfer layer on one side of the material veneer Apply the adhesive with the mixing ratio as in the above example to one side of the material veneer at a coating amount of 40 f/d to 5 ot 7 tyt,
On top of that, an ink transfer layer is placed FtA, and the adhesive is applied on the other side of the material veneer at a coating amount of 1001/ld to 1191/ld.
1w1 'ea cloth 0 The manufacturing method of the artificial decorative veneer of the present invention is constructed as described above, and the hardness of the 4 adhesive layer does not increase by increasing the amount of adhesive applied and the slicability is good. The condition can be maintained, and the vinyl chloride resin powder mixed to adjust the viscosity of the adhesive forms a film on the surface of the veneer material, preventing the adhesive from seeping into the veneer material. It has the effect of reducing the amount of agent applied and sharply finishing the wood grain pattern of the resulting artificially decorated veneer. Since vinyl chloride resin makes the adhesive cloudy, it is preferable to mix pigments or dyes into the adhesive if necessary.

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Claims (1)

[Claims] (1) A manufacturing method in which a large number of material veneers are laminated with bonded steel interposed between them and pressed together to create an artificial flitch, and then the artificial flitch is sliced into thin pieces to obtain an artificial decorative veneer. , urethane resin adhesive KME
K or PCl or a small amount of vinyl chloride resin monomer and M
A method for manufacturing artificially decorated veneers, which is characterized by adding a mixture of EK and TI (F), adjusting the viscosity with a powder of vinyl chloride resin, and using a large adhesive.