Method for making environment-friendly type composite vegetation high and medium density fiber board

Abstract

This invention discloses one environmental protection vegetation compound high school density fiberboard manufacture method. This method use straw stalk processing smashing,grinding paste, defibering, exerts urea resin rubber,preparation straw stalk executes the rubber textile fiber;then uses lumber grinding paste,defibering, exerts the urea resin rubber, preparation lumber executes rubber textile fiber, executes lumber rubber textile fiber and straw stalk executes rubber textile fiber according to the proportion mix; Executes rubber textile fiber paving to take shape, the thermo-compression becomes the high school density cellulose board; Is spatial airtight the element board through the center falls the aldehyde processing room, this processing room separated in two parts; falls aldehyde processing room to pass over the ammonia, causes the element board two sides to have the pressure difference, ammonia penetrates element board under the pressure difference function, the adjustment falls aldehyde processing room controlled variable, may prepare the E1 / E0 level environmental protection high and middle density fiberboard through the physical chemistry function. This invention reduced lumber consumption, protected the environment, and reduced the production cost, this product formaldehyde content has been low, guarantee product environmental protection target.

Description

technical field [0001] The invention belongs to the technical field of wood-based panels and composite materials, and relates to a method for manufacturing an environment-friendly grass-wood composite high- and high-density fiberboard. Background technique [0002] my country lacks forest resources and the supply of timber is tight. Especially after the national implementation of the natural forest protection project, timber logging is banned in 18 provinces, municipalities and autonomous regions across the country. Many wood-based panel companies are facing the threat of stopping production and changing production due to the shortage of raw materials, and urgently need to find alternative raw materials. On the other hand, my country is rich in crop straw resources, and the annual production of wheat straw and rice straw is as high as 400 million tons. A large amount of agricultural straw has not been rationally utilized for a long time. Except for a very small amount as live...

AI Technical Summary

Problems solved by technology

If wheat straw or rice straw is used as raw material to manufacture medium and high density fiberboards, it involves fiber manufacturing process issues.