Manufacture of plastics products

Details Manufacture of plastics products Manufacture of plastics products

1979-09-10

1981-10-06

Hall, James R.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Plural, intermittent pressure applying

264126, B27J 500

Patent

active

042935156

ABSTRACT:
Manufacturing plastics products from a raw material containing at least 50% by weight reclaimed synthetic thermoplastics material by conveying a mat of the raw material through an oven to heat the material to the softening point thereof, and compressing the softened mat downstream of the oven between three rollers arranged generally one above the other to define a first nip between the upper and middle lower rollers and a second nip or passage between the middle and lower rollers, wherein the middle and lower rollers are of substantially greater diameter than the upper roller.

REFERENCES:
patent: 3874962 (1975-04-01), Gersbeck et al.
patent: 4005162 (1977-01-01), Bucking
patent: 4097640 (1978-06-01), Curry et al.

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