Reinforced thermoplastics sheet and its manufacturing process
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United States of America Patent
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Apr 16, 1991
Grant Date -
N/A
app pub date -
Jul 22, 1988
filing date -
Jul 23, 1987
priority date (Note) -
Expired
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Abstract
Fiber reinforced thermoplastics sheet is produced by a wet method from (a) an aqueous dispersion of reinforcing fibers an dispersing agent; and (b) an aqueous dispersion of thermoplastics polymer powder and an ionic polymer additive of opposite charge to the fiber dispersion. The dispersions are mixed, a high molecular weight ionic polymer flocculating agent is added, of charge opposite to that of the mixture, and the resulting suspension is drained and dried to form the sheet.
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