Veneering production process for artificial board

Abstract

The invention relates to a veneering production process for an artificial board. The process comprises the following steps of: (1) treating an artificial board base material and a figured veneer at constant temperature and humidity to adjust water content, so that the water content of the artificial board base material is 6 to 10 percent, the water content of the figured veneer is 8 to 12 percent, and water is uniformly distributed; (2) completely removing a compact hardened layer from the surface of the artificial board base material to avoid warpage deformation or cracking caused by stress unbalance or environmental change in the veneering process of the figured veneer; (3) attaching the figured veneer to the surface, from which the compact hardened layer is removed, of the artificial board base material to form a semi-finished veneered decoration plate; and (4) and curing the semi-finished veneered decoration plate. By the process, the defects of dry shrinkage, bending, deformation, panel cracking and the like after the figured veneer is attached to the artificial board base material are overcome, and the quality of the veneered decoration plate is obviously improved; and compared with the traditional veneering process, the process has the advantage that quality loss is reduced by over 60 percent.

Description

technical field [0001] The invention relates to the field of wood processing, in particular to a veneer production process for wood-based panels. Background technique [0002] As we all know, the base material of wood-based panel (such as particleboard or MDF) will produce a pre-cured layer (thickness 0.4-0.8mm) on the surface when the board is made, that is, a dense hardened layer. At present, the veneer production process of wood-based panels, that is, veneer decorative panels (referred to as veneers) formed by veneer veneers (also called veneers) on the base of wood-based panels, the conventional production process in this field is: first The dense hardened layer on the surface of the material can be simply sanded and sanded without destroying the surface structure of the substrate. Destroy the quality of the board and reduce the thickness of the board, which is not good for the performance of the board), the purpose is only to make the surface smooth and sand the roughn...

AI Technical Summary

Problems solved by technology

The veneer decorative board produced by this process has the following disadvantages: 1. Because the wood-based panel base material or veneer material is not subjected to a second moisture content balance treatment before hot pressing, the internal moisture content distribution is uneven , is susceptible to changes due to the influence of the environment during the hot pressing process. The change in moisture content causes the veneer to shrink and deform, and the slight dry shrinkage and wet expansion of the veneer on the surface of the veneer may also cause cracking of the paint film of the veneer veneer furniture, which seriously affects The decoration quality of the veneer reduces its use value; 2. Because the surface of the substrate is only sanded very thinly, there is still a dense hardened layer on the surface of the substrate, so it cannot eliminate the stress of the veneer during the pressing process

If the quality of the decorative panels cannot be controlled, it will inevitably affect the value and service life of the entire veneer furniture

However, the existing veneers produced by different processes have completely different warping and deformation conditions.