Crop straw wood-based panel and production method thereof

Abstract

The invention discloses a production method of crop straw artificial board, which comprises 1) cutting the straw into grass sections with a length of 20-40 mm, and the moisture content of the grass sections is 12-20%; A pulverizer of 5-10 mm pulverizes the grass section, and the particle size of the pulverized fiber conforms to a normal distribution, the value range of μ is 0.2-1.0 mm, and the value range of σ is 0.2-0.6 mm; 3) use a sieve Sub-equipment sieves the pulverized fiber into coarse material and fine material, and the mass ratio of the coarse material to the fine material is 1~2:1~2; 4) Dry the coarse material and the fine material respectively, and the coarse material The moisture content is controlled at 8-14%, and the moisture content of the fine material is controlled at 10-14%. The method ensures that the sieved crop straw wood-based panel surface and core layer raw materials meet different shape distribution requirements, that is, there is no coarse shavings in the surface layer and no too fine fibers in the core layer.

Description

technical field [0001] The invention relates to the field of artificial board manufacturing, in particular to a crop straw artificial board and a production method thereof. Background technique [0002] Crop straw is a valuable renewable resource, and the annual output of crop straw in my country is about 700 million tons. However, due to the influence of consumption concepts and lifestyles for a long time, my country's rural straw resources are completely in a state of high consumption, high pollution, and low output. A considerable part of crop straws are discarded or burned, and have not been rationally developed and utilized. Making full use of straw, a renewable resource, is undoubtedly one of the effective ways to solve the shortage of resources. The use of crop straws to make wood-based panels is one of the projects that is indeed feasible and has already been industrialized. [0003] However, the status quo of the straw-based panel industry is not optimistic. The bo...

AI Technical Summary

Problems solved by technology

However, the particle size distribution of the hammer crushed by the hammer crusher is relatively wide, and it does not meet the different requirements of the surface core layer on the fiber fineness.

Even if the surface and core layers are divided and crushed separately, such as the surface layer, there will still be some coarse materials appearing on the surface of the board, which will affect the decorative application of the board

At the same time, there is almost no fine material in the core layer, and the specific surface of the fine material is large, which will consume a lot of adhesive

Moreover, the fine screen increases the difficulty of crushing, especially when the moisture content of the straw cannot be guaranteed, resulting in low output and frequent equipment failures, which seriously restricts the production capacity of the crop straw wood-based panel production line

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