Preparation method for novel low-density, low-cost and high-strength shaving board

Abstract

The invention relates to a preparation method for a novel low-density, low-cost and high-strength shaving board which comprises a surface layer, a shaving layer and a core layer. The preparation method comprises the following specific steps: (1) carrying out material preparation; (2) carrying out drying, specifically, drying wet shavings obtained in the step (1) until the water content of the shavings reaches 2-4% through condensed hot water at 95-98 DEG C; (3) carrying out sieving, specifically, sieving the shavings dried in the step (2) into surface shavings, core shavings and fine shavings; (4) carrying out glue mixing; (5) carrying out directional pavement; and (6) sequentially carrying out plate blank trimming, hot-pressing, edging and cross cutting, plate turning and cooling, and on-specification plate cutting to obtain the shaving board meeting requirements. According to the preparation method disclosed by the invention, Tongda electric power generating condensed water (at about 95 DEG C) is directly used as drying heat energy, a boiler has no need to be used, the utilization rate of the heat energy is increased by 30%, the drying heat energy cost of the plate is greatly lowered, a fire risk during the drying process is prevented, an industrial model of circular economy is achieved, low-carbon and environment-friendly production is realized, and the economic mode can adapt to the new normal of economic development actively.

Description

technical field [0001] The invention relates to a preparation method of a novel particle board with low density, low cost and high strength, and belongs to the technical field of construction industry. Background technique [0002] Timber products are indispensable means of production and subsistence in national construction and people's lives. They are widely used in various aspects such as industrial packaging, architectural decoration, furniture manufacturing, and national defense construction. my country is a country with scarce forest resources. The potential market for timber products is huge. Under the current situation that the supply of most commodities in our country is oversupplied, this kind of timber products are one of the few products that are seriously in short supply, and the contradiction between supply and demand will exist at present and in the future for a long period of time. The main reason for the prominent contradiction between the supply and demand ...

AI Technical Summary

Problems solved by technology

[0007] The pavement method of the existing particleboard is mostly air-flow paving, which is prone to large shavings on the board surface; the shavings of the existing particleboard are prepared by a ring-type flaking machine, and the shavings are in the form of granular and rod-shaped shavings; the shape of the existing particleboard is relatively large. Small, the core layer is rod-shaped shavings, the board is variable, the nail holding power is poor, the strength is low, and the amount of glue applied is large

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