Efficient production method of small-diameter-log composite wood

Abstract

The invention relates to an efficient production method of small-diameter-log composite wood. The efficient production method comprises the following technological steps of (a) small-diameter-log pretreatment, (b) saturated vapor heating and softening, (c) gluing and hot press molding, and (d) continuous plate blank heating curing and drying. The efficient production method has the beneficial effects that gluing is carried out on small diameter log obtained after high temperature saturated treatment while it is hot, then same-direction paving compression is carried out, the small diameter log can be heated and is easily extruded to be in a similar hexagon shape, gaps between the small diameter log will be filled, the small diameter log makes contact with each other and is glued into a whole, the small diameter log is manufactured into the composite wood with different cross sections according to needs, and the composite wood is fixed into a mold to be cured and dried through a high temperature tunnel kiln. According to the composite wood produced through the process, the small diameter log using rate is high, the production efficiency is high, quality is good, and material sources are sustainable.

Description

technical field [0001] The invention relates to a high-efficiency production method of small-diameter composite materials, which belongs to the technical field of wood-based panel manufacturing in the wood industry. Background technique [0002] Sub-small fuelwood refers to sub-grade logs whose material is inferior to the lowest grade of processed logs, but still has a certain use value; wooden sticks, wooden poles, short logs and fuelwood with a length of less than 2m or a diameter class of less than 8cm. These small-diameter materials cannot be effectively utilized and are burned as firewood. For this reason, how to use small-diameter materials through processing and reorganization to make better use of inferior materials is a problem for my country, which is short of forests and materials. Said it is especially necessary. [0003] Commonly used wood compression deformation fixation methods mainly include: heat treatment, steam treatment, cross-linking reaction, etc. Heat ...

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Problems solved by technology

[0005] Due to the lack of large-diameter log resources, large-diameter beams and columns are still in short supply. Scholars and manufacturers have explored how to combine small-diameter timber and branch timber into large-diameter timber, such as processing the end faces into trapezoidal timber. , regular hexagons, etc. to splice, there are special equipment required, and the processing is cumbersome, the straightness of logs is high, and the material utilization rate is low. The small-diameter timber after high-temperature saturation treatment is hot-glued, and then paved in the same direction. Pack it and compress it, so that the small-diameter wood with a round appearance will be easily extruded into a hexagonal shape due to heat to fill the gaps between each other. The small-diameter wood has mutual contact surfaces and is glued into a whole. It can be made into a Composite materials with various cross-sections such as square, round and rectangular, etc., are fixed in the mold and cured and dried in a high-temperature tunnel kiln to obtain small-diameter composite materials

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