Printed board with three-dimensional wood grain effect on patterned surface, and preparation method therefor

A method for generating a three-dimensional wood grain on a pattern surface, characterized in that it comprises the following steps:

• (1) allowing at least a portion of the surface of the pattern layer to be covered with a resin solution;
• (2) curing at least a portion of the resin solution on the surface of the pattern layer to form a wood grain base layer;
• (3) allowing at least a portion of the surface of the wood grain base layer to be covered with at least one layer of resin solution;
• (4) applying an embossing solution onto at least a portion of the surface of the resin solution on the surface of the wood grain base layer along the colored pattern, thereby forming an embossing layer from the embossing solution and/or at least a portion of the resin solution mixed with the embossing solution and/or at least a portion of the resin solution covered by the embossing solution;
• (5) curing the resin solution other than the embossing layer formed in the previous step;
• (6) a pretreatment step in which the embossing layer is impregnated with a pretreatment agent;
• (7) removing the embossing layer, thereby forming a 3D wood grain layer on the surface of the wood grain base layer.