Modified fiber board production process

Abstract

The invention relates to a modified fiber board production process. The modified fiber board production process includes steps of chipping, digesting, hot grinding, preparation of modified fibers, drying, preparation of blank materials, cold pressing, hot pressing, saw cutting, sanding, thickness determination and the like. In the step of preparation of modified fibers, calcium powder is added into fibers and used for replacing part of wood fibers, the calcium powder is mixed with glue prior to being mixed with the fibers during filling so as to enable clearances of the fibers to be filled by mixture of the calcium powder and the glue, and accordingly physical and chemical performances of fiber boards are improved, and improvement of board density, reduction of wood consumption and improvement of elasticity modulus indexes and static bending strength of the boards are achieved while reduction of fiber board production cost and effective saving of wood resources are realized. Wood consumption is reduced by about 20% as compared with that of common fiber boards, and the modified fiber boards produced according to the process have the advantages of high strength, high nail holding ability, excellent bending resistance and high stability and flame retardance.

Description

technical field [0001] The invention belongs to the technical field of wood-based panel production, and relates to a production process of modified fiberboard. Background technique [0002] In today's social and economic development, the demand for wood and its products is increasing, making full use of resources such as artificial fast-growing commercial forests, forest cultivation and harvesting residues, and waste wood fibers in the process of production and construction, renovation and transformation to develop wood-based panels to replace Traditional solid wood products play an irreplaceable role in protecting natural forest resources, improving the ecological environment, and meeting the demand for wood products in economic development. With the rapid development of my country's economy and the continuous improvement of urbanization rate, there is a broad market space for fiberboard products with stable quality, high environmental protection level, meeting differentiat...

AI Technical Summary

Problems solved by technology

In the prior art, the commonly used fiberboards are degreased and peeled logs, crushed into wood fibers and then molded under high temperature and high pressure. Most of the existing fiberboards in the market are medium density boards and high density boards, and their density is higher than that of ordinary boards. Higher, the material of this kind of fiberboard is uniform, the surface is flat, and the decoration of the surface of the board is good, but the disadvantages are: the stability is poor, and the board is warped and deformed due to the difference in expansion force after moisture absorption, due to the strength of the fiberboard It is not high, and the nail holding power is poor. If the screw becomes loose after tightening, it is difficult to fix it again, which limits its scope of use to a certain extent.

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