METHOD FOR PRODUCING A FOAMED POLYMER COMPOSITE BOARD FROM MIXED PLASTIC WASTE
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United States of America
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Feb 6, 2025
app pub date -
Oct 11, 2022
filing date -
Oct 11, 2022
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Abstract
In a method for producing a polymer composite board from plastic waste, in which the plastic waste is processed in an extruder in a melt-kneading step to form a melt, the melt is introduced into an injector and injected under pressure into a cavity of a closed mold by the injector, in order to form a board. The melt is formed from a free-flowing agglomerate and a blowing agent. The free-flowing agglomerate is produced from unsorted, mixed plastic waste, and the melt is introduced into the closed mold via an injection nozzle along an end side of the cavity, in which mold the melt is foamed and cooled to form a foamed core layer of the polymer composite board.
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