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Technology for producing wood-plastic vacuum chipboard

A production process and particle board technology, which is applied in the direction of wood processing equipment, manufacturing tools, and pretreatment of molding materials, can solve the problems of easily polluted heating steel plates, no specific plans, and low strength of the plates, so as to achieve environmental protection and solve The problem of sticking to the board and the effect of small secondary deformation

Inactive Publication Date: 2010-06-09
丹阳市广胜木业有限公司
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AI Technical Summary

Problems solved by technology

Although this method mentions the processing technology of wood-plastic panels, there is no specific plan. The traditional production methods of wood-plastic wood-based panels are all produced by flat presses, and the temperature of the core layer of wood-plastic panels is difficult to rise to the temperature of plastic. The melting point can only reach 100°C, resulting in very low strength of the board and a very long press time, and the wood-plastic board is easy to contaminate the heated steel plate during the pressing process, and a large amount of release agent is required

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0011] The production process of wood-plastic evacuated particleboard includes the following steps in sequence:

[0012] (1), crush waste wood chips or other non-woody plant fibers to 15×3×0.8MM, and dry them in a desiccator until the moisture content is 8%;

[0013] (2), crush waste plastics to 2mm, take 100 parts of waste wood chips and 20 parts of waste plastics, and mix them in a double-screw machine;

[0014] (3) The mixed material is sent to the vertical extrusion press through the air supply system, wherein the air supply wind speed is 30 m / s, the temperature of the surface layer and the core layer of the press is controlled at 230 ° C, and the pressure is controlled at 12Mpa. The impact frequency of the head is 60 times / min, and the plate output speed is 10mm / s. Under the action of extrusion pressure and high temperature, the die head in the press is driven by the crank mechanism and slides up and down on the upper part of the core column. When the feeding device work...

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Abstract

The invention relates to a production technique of using waste plastics and waste saw dusts or other non-woody plant fibers to produce wood-plastics evacuation particleboard which is formed after thewaste plastics and waste saw dusts being mixed by the twin-screw machine and being ventilated, heated, constant compressed into mould and cut. With the production technique of the invention, compressed by heating device in the core layer, the surface layer and core layer of the wood-plastics evacuation particleboard are controlled under the same temperature, so that the complete melting of the surface layer and the core layer is guaranteed; the problem on the sticking board is solved properly and the waterproof property is enhanced. The environmental protection can be achieved as no formaldehyde is released.

Description

technical field [0001] The invention relates to the production of artificial particle boards for waste plastics and waste wood chips or other non-woody plant fibers, in particular to the production process of producing wood-plastic evacuated particle boards with waste plastic powder and wood chips by hot pressing. Background technique [0002] The evacuated particleboards on the market are all made of wood as the main raw material. Because urea-formaldehyde resin is used as the binder, the formaldehyde content is high, and the products made contain a large amount of free formaldehyde, which is harmful to human health. Therefore people try hard to find the environmental protection new method that replaces urea-formaldehyde resin glue to produce evacuated particleboard always. In recent years, there have been many reports of wood-plastic materials at home and abroad. The Chinese invention patent application discloses a kind of "production of wood products and fiber products wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/18B27N1/02B27N3/04B27N3/28
Inventor 吴晓金
Owner 丹阳市广胜木业有限公司
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