Tectona grandis color change treatment method

Abstract

The invention provides a Tectona grandis color change treatment method, which comprises a surface wet treatment step and an ultraviolet irradiation step, and further comprises a heating treatment stepset before the ultraviolet irradiation step, wherein the heating mode in the heating treatment step comprises one or a combination comprising two selected from infrared irradiation heating, convection heating and contact heating so as to heat a Tectona grandis billet material. According to the present invention, by additionally setting the heating treatment step before the ultraviolet irradiationstep, the generation of dark cracks on the surface, end cracks and surface burrs on the surface can be effectively avoided, black gold textures are formed or deepened on the surface of the Tectona grandis billet material, the moisture content of the Tectona grandis billet material is uniform after color changing treatment, and the curing time is shortened, such that the quality and the quality grade of the Tectona grandis billet material are guaranteed while the Tectona grandis color change treatment production efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of physical modification treatment methods for wood materials, in particular to a treatment method for physical discoloration of teak wood. Background technique [0002] Teak is a high-quality raw material for making solid wood flooring. It has the advantages of corrosion resistance, wear resistance, beautiful patterns, elegant and durable colors, and good stability. Sun-dried teak veneer is an indispensable part of teak floor processing. Its function is to oxidize the teak veneer through ultraviolet radiation in sunlight, so that the color of the teak veneer changes from brown to golden yellow, with luster and uniform color. And deepen the black gold texture. In the prior art, the teak floor blanks that have been finished with short-side tongue-and-groove making and short-side paint-sealing are tiled outdoors and exposed to the sun for 10 to 15 days (depending on the weather conditions). The sur...

AI Technical Summary

Problems solved by technology

In the prior art, the teak floor blanks that have been finished with short-side tongue-and-groove making and short-side paint-sealing are tiled outdoors and exposed to the sun for 10 to 15 days (depending on the weather conditions). Spray water or chemicals on the surface of the teak wood board, and then undergo about 30 days of natural health preservation to complete the treatment of the sun-dried teak wood. The whole process takes about 40 to 45 days

[0003] The traditional sun-dried teak process has the following problems: the processing time of 40 days to 45 days is too long, which increases the inventory pressure of the material, and basically depends on the natural weather, and the labor intensity of the workers is high; on the other hand, the sun-dried plain board The surface is the surface treated with paint, long-term outdoor sun exposure, surface scratches will occur, and repeated water spraying and sun exposure will cause the blank to deform, and the completed tongue and groove is difficult to assemble.

Surface cracking is a kind of defect that is not easy to be found in the previous process, but it is not allowed to exist. It will appear in the surface painting process, and the teak blank needs to be sanded to remove the paint and then be modified (the surface is cracked) Sand removal, reducing the thickness of the plate), affecting production efficiency and material yield

At the same time, the moisture content of the teak blanks treated by this method is uneven (the deviation of the moisture content in the board is large), and a relatively long treatment time is still required to make the moisture content of the teak blanks uniform. Therefore, the treatment less efficient

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