Anti-cracking reconsolidated bamboo manufacturing method

Abstract

The invention discloses an anti-cracking reconsolidated bamboo manufacturing method, which mainly comprises the steps of bamboo chip preparation, specifically, longitudinally splitting bamboo, and removing inner joints to form bamboo chips; ultrahigh-pressure treatment, specifically, conducting ultrahigh-pressure treatment on the bamboo chips by using a plasticizer as a pressure transmission medium, wherein the ultrahigh pressure is 200-400Mpa; softening treatment, specifically, placing the bamboo chips in a weak alkaline solution for softening treatment; rolling and splitting, specifically, rolling and flattening the bamboo chips in the radial direction, splitting the bamboo chips in the thickness direction, and then defibering and splitting the bamboo chips to form sheet-shaped bamboo bundles; gum dipping treatment, specifically, drying the sheet-shaped bamboo bundles, and then placing the sheet-shaped bamboo bundles in a vacuum high-pressure environment to be soaked in resin gum for10-30s; drying and balancing: specifically, drying the sheet-shaped bamboo bundles, and then placing the sheet-shaped bamboo bundles in a balancing kiln for moisture content balancing, wherein the balancing time is 7-15 days; and hot-pressing curing, specifically, preparing the sheet-shaped bamboo bundles into reconsolidated bamboo plates, stacking and heavily pressing the reconsolidated bamboo plates, aging for 7-10 days at the room temperature, and then conducting subsequent processing. The reconsolidated bamboo plates manufactured through the method can be effectively prevented from cracking, and the material cost is low.

Description

technical field [0001] The invention relates to the field of bamboo processing, and more specifically, relates to a crack-resistant recombined bamboo manufacturing method. Background technique [0002] Recombined bamboo uses moso bamboo as raw material, with a utilization rate of more than 90%, which is more than twice the raw material utilization rate of traditional bamboo processing and production methods, and the density can reach 1.2g / cm 3 It is more than 1.6 times that of ordinary bamboo and wood flooring, with high hardness, high strength, impact resistance and other advantages. The dry shrinkage and wet expansion of bamboo is mainly due to the hygroscopicity of bamboo. Under certain temperature and humidity conditions, the hydroxyl groups in bamboo cell cellulose and hemicellulose will absorb water molecules in the air. When there is little water vapor in the air, the water will flow into the air. Drying shrinkage is formed macroscopically in medium evaporation, and ...

AI Technical Summary

Problems solved by technology

Compared with the traditional recombined bamboo processing technology, this method is relatively limited by raw materials, and the requirements for raw materials are relatively high, thus increasing the manufacturing cost.

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