Formation of artificial wood texture of deciduous diffuse vascular rocks due to laser perforation

Birch and aspen are the most common hardwoods in the Russian Federation. The disadvantages of these breeds include the pale color and featureless texture of the wood. One of the ways to refine such wood is to form an artificial texture. The artificial texture will provide an increase in the decorative properties of wood, which will expand the scope of its use, including for the production of finishing materials and interior items, which are subject to increased requirements in terms of aesthetic properties. In the presented work, the possibility of forming an artificial texture of birch and aspen wood due to its laser perforation followed by autoclave impregnation with a textile dye is investigated. The proposed method consists in laser-burning channels in wood according to a special scheme (depending on the texture design) through which local staining of wood occurs during autoclave impregnation. The texture is formed by alternating colored and unpainted areas over the entire thickness of the workpieces. In order to ensure the adjustable size of the local areas to be painted in wood, the paper examines the distribution features of the impregnation solution in laser-perforated wood. In the course of research, it was found that aspen wood, due to the different permeability of ripe wood and sapwood, is not suitable for controlled texture formation using the proposed technology. For birch wood, the possibility of controlled formation of artificial wood texture by laser perforation followed by its impregnation with textile dye has been confirmed. The dependences of the formation of the sizes of the colored zones adjacent to the laser perforations are obtained depending on the structural direction, pressure and duration of autoclave impregnation with the dye.

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