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APPARATUS AND METHOD FOR LOW-DENSITY CELLULAR WOOD PLASTIC COMPOSITES
APPARATUS AND METHOD FOR LOW-DENSITY CELLULAR WOOD PLASTIC COMPOSITES
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机译:低密度细胞木质塑料复合材料的装置和方法
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摘要
An agent such as a blowing agent comprised of a chemical blowing agent or aphysical blowing agent, for example a gas, is added to wood, plastic material.A low-pressure C02 tank or an air compressor with a refrigerated air dryer isattached either at or after the vent zone of a standard twin-screw extruder toinsert the gas. During or after extrusion, the gas is dissolved in the wood-plastic melt material. The material expands which foams the wood-plasticmaterial reducing the density of the final product.
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