Efficient manufacturing method of flattened bamboo laminated material

Abstract

The invention discloses an efficient manufacturing method of a flattened bamboo laminated material. Under the action of the high temperature steam with the temperature of 120-200 DEG C, the bamboo material is rapidly heated to the softening temperature, after softening, the bamboo material is pressurized progressively by a steam tank built-in press or an external press, and the bamboo material orarc-shaped bamboo material with saw seams is flattened, the flattened bamboo board with high hardness and wide width is used as a raw material, and after drying, finalization, fine planing, sizing, blank assembly and hot pressing, the flattened bamboo laminated material with various blank structures and sizes is obtained. By performing high temperature steam softening on the bamboo material and reducing the processes of bamboo material inner wall notching or nail tooth rolling, the mechanical properties of the flattened bamboo laminated material are improved, the sanding amount of the flattened bamboo board is reduced, and the utilization ratio of the bamboo material is increased. The bamboo material softening treatment at high temperature and the continuous flattening process can reduce the complexity of bamboo processing and improve the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of bamboo processing, and in particular relates to a high-efficiency manufacturing method of flattened bamboo glulam. Background technique [0002] Because of its unique growth characteristics, ecological functions and economic value, bamboo is recognized as a huge, green, renewable resource and energy pool, and has become the material of choice to replace wood resources. my country is the world's largest producer and exporter of bamboo products. Bamboo glulam products developed in recent years have the characteristics of fresh texture, natural color, flat and smooth, good toughness, high strength, and surface wear resistance, and are deeply loved by consumers. [0003] At present, the manufacturing process of bamboo glulam mainly consists of cutting bamboo, splitting it into multiple bamboo strips, rough planing (removing bamboo green and bamboo yellow layers), drying, fine planing, gluing, forming blanks, ...

AI Technical Summary

Problems solved by technology

There are a series of problems in this manufacturing method: the utilization rate of raw materials is low; the bamboo unit preparation process is complicated, it is difficult to realize continuous production, and the production efficiency is low; The glued interface is easily affected by environmental factors such as temperature and humidity. Glulam products will crack or deform due to environmental changes, which will affect product quality

However, the high-temperature softening process adopted is mainly to place the bamboo in a high-temperature tank, and then take the bamboo in the tank to flatten in the cold environment of the workshop, because the average temperature of the workshop is only 10-30°C, and the temperature of the bamboo is quickly cooled to 100°C. ℃, therefore, the temperature of bamboo is already lower than its own softening point temperature during actual flattening, and the mechanism of high-temperature softening of bamboo cannot be fully utilized.

And in the outdoor environment, the moisture of the bamboo is lost rapidly, which makes the bamboo harden, and the flattening effect cannot be significantly improved