Long fiber thermoplastic formed with recycled and renewable content
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United States of America Patent
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Nov 22, 2016
Grant Date -
Nov 20, 2014
app pub date -
Jan 7, 2013
filing date -
Jan 6, 2012
priority date (Note) -
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Abstract
A molding composition formulation is provided that includes polypropylene, glass fiber, and a polypropylene substitute including recycled sheet molding composition transfer film. The polypropylene substitute is present from 1 to 35 total weight percent also may include natural cellulosic fibers or powders. A process is provided by which the polypropylene substitute is mixed and homogenized and then mixed with polypropylene and additives, and thereafter glass fiber. A reduction in the amount of virgin polypropylene used is reduced compared to conventional thermoplastic glass fiber filled moldings.
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