How plywood is made

Abstract

The invention discloses a preparation method of plywood. The preparation method is characterized in that the preparation method comprises the following steps: a) a continuous plywood blank formed by a continuous transverse veneer band and continuous longitudinal veneer band assembly and an adhesive enters a preheating and pressurizing unit and is subjected to preheating and pressurizing treatment simultaneously; b) after the preheating and pressurizing treatment, the plywood blank enters a heating and pressurizing unit from the preheating and pressurizing unit and is subjected to heating and pressurizing treatment; and c) the plywood blank subjected to the heating and pressurizing treatment enters a cooling and pressurizing unit from the heating and pressurizing unit through the conveying of a steel band conveying unit, and is subjected to thickness-fixed forming. According to the preparation method of the plywood, the plywood blank is made into the finished plywood by one step, so that a production cycle is short and the plywood production efficiency is high; and the finished plywood produced after the plywood blank is subjected to the three stages, namely, the preheating and pressurizing treatment, the heating and pressurizing treatment and the cooling thickness-fixed forming is stable and reliable in quality and durable in use.

Description

technical field [0001] The invention relates to the technical field of biomass material manufacturing, in particular to a method for preparing plywood. Background technique [0002] At present, a large number of plywood enterprises in China have gradually revealed various problems such as small scale, simple machinery and equipment, backward technology, monotonous product types, and uneven quality. The production of plywood needs to go through multiple processes such as rotary cutting, cutting, repairing, drying, gluing, billet formation, and hot pressing. The continuous billet formation and hot pressing cannot be performed in the production process, which makes China and even the world rely heavily on the use of large quantities of Manpower, with the rise of raw material prices and rising labor costs, the profits of plywood companies are constantly being compressed. [0003] In the prior art, there have been some continuous paving and hot-pressing plywood preparation metho...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there have been some continuous paving and hot-pressing plywood preparation methods, but all of them need to use high-quality veneers that are rotary-cut from large-diameter logs, and the billet assembly technology is difficult, prone to core stacking, separation The phenomenon of seams is not conducive to the application background of the current global fast-growing forest as the main raw material

And the manufacturing cost of press in the prior art is too high, the speed of preparing plywood is slow, the quality of prepared plywood is poor etc. a series of problems

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