Molded styrene polymer articles from vacuum-formed or thermoform

Details Molded styrene polymer articles from vacuum-formed or thermoform Molded styrene polymer articles from vacuum-formed or thermoform

1976-05-05

1978-06-20

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264101, 264176R, B29C 2300

Patent

active

040962245

ABSTRACT:
Sheets produced by the extrusion of a mixture of about 85 - 95 percent by weight of polystyrene or semi-impact-resistant polystyrene and about 5 - 15 percent by weight of a diene-styrene block copolymer having the structure S-B-S wherein S represents the styrene structure and B represents the butadiene or isoprene structure are used for the manufacture of molded articles in the vacuum-forming or thermoforming method.

REFERENCES:
patent: 3709967 (1973-01-01), Held, Jr.
patent: 3853978 (1974-12-01), Horie et al.
patent: 3957940 (1976-05-01), Schubert et al.

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