A kind of production technology of veneer impregnated with melamine glue

Abstract

The invention discloses a production process for impregnating veneer with melamine glue, which comprises the following steps: A. cutting and trimming purchased veneer to obtain veneer raw materials; B. splicing veneer raw materials into rolls to obtain spliced ​​veneer; C. Glue treatment; the spliced ​​veneer is dipped twice to obtain a melamine glue-impregnated veneer; the total amount of glue applied to the spliced ​​veneer is 120-180% of the weight of the spliced ​​veneer. In the present invention, the veneer is soaked twice, and by controlling the glue components and dosage in the dipping pool, the amount of glue applied each time, the total amount of glue applied, and the two drying processes, the melamine is guaranteed The glue can be well attached to the surface of the veneer. After curing, the veneer has good wear resistance, waterproof and flame retardant properties, and has a good pressing effect, which can meet the requirements of the subsequent pressing; it can also reduce the cost of glue . It has the characteristics of improving production efficiency, improving product quality and simplifying the subsequent pressing process.

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.