Production process of melamine glue dipped veneer

Abstract

The invention discloses a production process of a melamine glue dipped veneer, which comprises the following steps of: A, cutting and trimming purchased veneers to obtain a veneer raw material; B, splicing the veneer raw material into a roll to obtain a spliced veneer; C, carrying out dipping treatment, namely carrying out gum dipping treatment on the spliced veneer twice to obtain a melamine gumdipped veneer, wherein the total gluing amount of the spliced veneer is 120-180% of the weight of the spliced veneer. According to the invention, the veneer is subjected to gum dipping treatment twice, the components and the use amount of glue in a glue dipping pool during each glue dipping, the gluing amount and the total gluing amount of each time, and two drying processes are controlled, so that the melamine glue can be well attached to the surface of the veneer, the cured veneer has good wear resistance and waterproof and flame-retardant properties and also has a good pressing and pastingeffect, the requirement of subsequent pressing and pasting can be met, and the glue cost can also be reduced. The production process has the characteristics that the production efficiency can be improved, the product quality is improved and the subsequent pressing process is simplified.

Description

technical field [0001] The invention relates to a veneer production process, in particular to a production process for impregnating veneer with melamine glue. Background technique [0002] With the decrease of forest resources, the demand for panels is rising sharply. In order to meet the market demand, vinyl panels have begun to appear on the market. In order to make the surface of vinyl panels have good aesthetics, vinyl panels A layer of surface bonding material is adhered to the surface of the board, which is convenient for consumers to choose and purchase. Surface bonding materials currently have three bonding methods: PVC color film + wear-resistant, wood sheet and melamine impregnated paper. Wooden sheet has strong texture and good visual aesthetics, but its wear resistance is very poor. To improve its wear resistance, it must go through various painting processes, which are complicated, and its flame retardancy and waterproof performance are extremely poor. Melamin...

AI Technical Summary

Problems solved by technology

Wooden sheet has strong texture and good visual aesthetics, but its wear resistance is very poor. To improve its wear resistance, it must go through various painting processes, which are complicated, and its flame retardancy and waterproof performance are extremely poor.

Melamine-impregnated paper can achieve strong wear resistance after curing and molding, but its texture and visual aesthetics are poor, and because the surface of substrates such as Polaroid boards and vinyl material boards is relatively smooth, traditional melamine-impregnated paper cannot Forming directly with vinyl materials by direct pressing requires multi-process secondary molding, and the production continuity and mass production capacity are poor; in order to obtain strong texture, good visual appearance, good wear resistance and waterproof performance As a surface-bonded material with flame-retardant properties, researchers began to study combining melamine glue and veneer to obtain melamine glue-impregnated veneer

However, the existing melamine impregnation process is mainly aimed at paper materials. When it is used to impregnate veneer, on the one hand, because the veneer is separate, it cannot be impregnated continuously, resulting in extremely low production efficiency; on the other hand, the final product obtained The quality of melamine-impregnated veneer is poor, and its wear resistance, waterproof and flame-retardant properties cannot meet the needs of use; moreover, when melamine-impregnated veneer is bonded to vinyl substrates, multiple pressings are required, which cannot be formed at one time, resulting in more troublesome pressing process

Therefore, the existing technology has the problems of low production efficiency, poor product quality and complicated follow-up pressing process.