Efficient production method for cold-pressed recombined bamboo timber

Abstract

The invention provides an efficient production method for cold-pressed recombined bamboo timber. The efficient production method comprises the following technological steps that 1, bamboo splits are dipped in modified low-temperature curing phenol glue; 2, charging and steam-injection for pre-heating are conducted; 3, die pressing is conducted; 4, slabs are heated and cured in a tunnel kiln. The efficient production method has the beneficial effects that that the manufactured cold-pressed recombined bamboo timber can shorten heating time, and the hot pressing efficiency of the recombined bamboo timber is greatly improved; besides, the density of the recombined bamboo timber is lowered by over 10%, and the internal stress of the recombined bamboo timber is lowered; the release time of the internal stress is shortened or release of the internal stress is not needed; during cold pressing, the pressure is only three fourths of conventional pressure, and wire skipping, cracking and other defects of finished products will be reduced; and the quality of the cold-pressed recombined bamboo timber is improved, and therefore the cold-pressed recombined bamboo timber can better meet market demands.

Description

technical field [0001] The invention relates to a high-efficiency production method of cold-pressed recombined bamboo, which belongs to the technical field of wood-based panel manufacturing in the wood industry. Background technique [0002] Recombined bamboo (also known as bamboo recombined wood, heavy bamboo) is a new type of bamboo wood-based panel for structure and decoration that has been improved and enhanced on the basis of bamboo laminates. The main production process of recombined bamboo is to remove the bamboo green layer from the bamboo, and then planing the bamboo yellow, rolling and sewing to make special bamboo strips or bamboo bundles with gaps through them, dipping in glue, drying, and cold pressing to shape- Heat curing or hot pressing machine hot pressing molding, the produced density is 1.0g / cm 3 And above the bamboo heavy timber. The so-called cold forming-heat curing method means that the rolled and seamed bamboo strips after dipping are molded in a st...

AI Technical Summary

Problems solved by technology

This method requires more than 10 hours of thermal curing in a high-temperature tunnel kiln. It has the advantages of fast molding speed, low investment, and large output. Large, long heat curing time, long stress release time after mold unloading (stacked for more than 15 days), uneven moisture content of the board, prone to defects such as wire jumping and cracking during use, although the market demand is large, but high quality The production of cold-pressed recombined bamboo has not yet found a good production method