Laying device and method of manufacturing fiberboard by utilizing sanding powder to replace precured layer

Abstract

The invention relates to a laying device of manufacturing a fiberboard by utilizing sanding powder to replace a precured layer. The laying device comprises a fiber feeding and conveying device and a laying and forming device, wherein the laying and forming device is arranged below the fiber feeding and conveying device. The laying and forming device comprises a fiber laying head and a board blankconveying device, wherein the board blank conveying device is arranged below the fiber laying head. Sanding powder laying devices are arranged above the board blank conveying device, and each sandingpowder laying device comprises a shell. The upper end of each shell is sealed, and the lower end of each shell is opened. A dust collection cavity and a sanding powder blanking cavity are formed in each shell in parallel in a separated mode, the lower end of each dust collection cavity is opened, and the lower end of each sanding powder blanking cavity is opened. The invention further relates to amethod of manufacturing the fiberboard by utilizing the laying device. The method comprises the steps of fiber preparation, adhesive application of fibers, layered laying of the dried fibers and sanding powder, pre-pressing operation, hot pressing operation and rough board treatment. By the adoption of the laying device and the method, due to the fact that laying of the sanding powder is conducted as laying of the fibers is conducted under the condition that the fiberboard production technology is unchanged, the requirement of the board for the physical performance is met, the production efficiency is improved, the raw material consumption of laying of the dried fibers is substantially reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to a paving device and a preparation method of a composite board, more particularly to a paving device and a method for preparing a fiber board by using sanding powder instead of a pre-cured layer. Background technique [0002] Fiberboard is a kind of man-made board made of wood fiber or other plant fiber as the main raw material, prepared by fiber, applied with adhesive, paved and shaped after the fiber is dried, and then hot-pressed. Classified by bulk density, fiberboard can be divided into high-density fiberboard, medium-density fiberboard, and low-density fiberboard. Due to the uniform material of fiberboard, it is widely used in the processing of furniture, floors, beds, wall panels, packaging boxes, ceilings, etc. Existing fiberboard sanding powder is mainly used as a low value-added product, generally as the main raw material of boiler fuel and incense core. [0003] In the production process of MDF, the sanding process ...

AI Technical Summary

Problems solved by technology

Taking the existing conventional 18mm thick fiberboard production as an example, the amount of double-sided sanding and sanding accounts for (0.9÷18)×100%=5%. For a production line with an annual output of 200,000 cubic meters, the annual raw material consumption of the sanding process The quantity is 200,000×5%=10,000 cubic meters of finished boards, which brings huge losses to the production enterprises

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