Highly foamed polypropylene product and an extrusion process for

Details Highly foamed polypropylene product and an extrusion process for Highly foamed polypropylene product and an extrusion process for

1982-05-19

1985-06-11

Anderson, Philip

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 53, 264DIG16, 521 79, B29D 2700

Patent

active

045229554

ABSTRACT:
A process for producing a highly expanded polypropylene foam which is uniform in viscosity during extrusion foaming, improved in melt strength and free from unevenness of surface by using a polypropylene resin having a specified melt tension.

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Van Raamsdonk, G. W., "Technological Aspects of Polypropylene Processing", in German Plastics Digest, part of Kunststoffe, vol. 51, (May 1961), pp. 10-14; 269-276.
Whittington's Dictionary of Plastics, by Lloyd R. Whittington, Stamford, Conn., Technomic, .COPYRGT.1968, pp. 179-181.
Brydson, J. A., Flow Properties of Polymer Melts, London, Iliffe Books, .COPYRGT.1970, pp. 160-166.

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