Study on the production technology of bamboo plywood for building formwork

Study on the production technology of bamboo plywood for building formwork

Abstract: bamboo plywood for building formwork is a bamboo wood-based panel made of bamboo by splitting, weaving, gluing and hot pressing. The moisture content of the semi-finished products used in the production shall be controlled at 5-8%. The adhesive shall be modified with p-type flexible agent and mixed with A-type buffer before painting. The amount of adhesive is 300-350g / cm 2 for both sides of the bamboo mat and 250-300g / m2 for both sides of the bamboo curtain. The hot pressing process adopts the three-stage type, namely, low pressure maintaining – high pressure maintaining – pressure reducing and pressure maintaining. The low pressure section is maintained for 1-2 min under the unit pressure of 5-10 kg / cm ~ 2, the high pressure section is maintained for 3-8 min under the unit pressure of 30-50 kg / cm ~ 2, and the pressure reducing section is maintained for 2-3 min under the unit pressure of 3-6 kg / cm ~ 2. The hot pressing temperature is about 130 ℃.

Key words: bamboo plywood production process

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