Reinforced thermoplastics sheet and its manufacturing process

Details Reinforced thermoplastics sheet and its manufacturing process Reinforced thermoplastics sheet and its manufacturing process

1988-07-22

1991-04-16

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523333, 523334, 524 35, 524322, 524494, C08K 700

Patent

active

050083066

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.

REFERENCES:
patent: 3201304 (1965-08-01), Munjat
patent: 3684545 (1972-09-01), Worral
patent: 3716449 (1973-02-01), Gatward
patent: 4194999 (1980-03-01), Hayashi et al.
patent: 4426470 (1984-01-01), Wessling

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