Production of foamed polymer

Details Production of foamed polymer Production of foamed polymer

1980-07-14

1982-10-05

Anderson, Philip E.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 455, 264 461, 2642102, 264237, 425 71, 425378R, 425817C, 521 51, 521 98, 521918, B29D 2700

Patent

active

043528937

ABSTRACT:
Polymer foam is extruded as a tube or sheet into a cooling liquid which is maintained at a temperature up to about 85.degree. C. Either one or both surfaces of the polymer are cooled as the extrudate emerging from the die orifice passes through the liquid. Styrenic polymer foam extrudate produced by such a method exhibits excellent puncture resistance and tensile properties.

REFERENCES:
patent: 3121132 (1964-02-01), Del Bene
patent: 3121760 (1964-02-01), Kline
patent: 3372215 (1968-03-01), Muirhead et al.
patent: 3864444 (1975-02-01), Johnson
patent: 4009976 (1977-03-01), Johnson
patent: 4098941 (1978-07-01), Johnson
Bernhardt, Ernest C., Edt. "Processing of Thermoplastic Materials", New York, Reinhold, .COPYRGT.1959, pp. 214-216.

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