Method for making cellular articles

Details Method for making cellular articles Method for making cellular articles

1973-08-09

1976-04-06

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

156167, 156181, 156244, 264 461, 264 463, 264 465, 264 94, 264 95, 264 96, 264167, 264177R, 264210R, 425 72R, 425382R, 428 71, 428159, 428304, B29C 2300, B29D 2702, B29F 306

Patent

active

039490319

ABSTRACT:
A method for making a cellular article in which at least some of a plurality of extruded, generally parallel streams of strand-forming organic, thermoplastic, polymeric material are periodically expanded to provide bulbous portions along the lengths thereof, with such bulbous portions contacting and bonding with adjacent streams during their expansion, after which the streams are set to provide an integral article.

REFERENCES:
patent: 1394270 (1921-10-01), Brandenberger
patent: 1780330 (1930-11-01), Blair
patent: 2149425 (1939-03-01), Draemann
patent: 2363051 (1944-11-01), Dosmann
patent: 2437884 (1948-03-01), Maynard
patent: 2455509 (1948-12-01), Luaces
patent: 2834045 (1958-05-01), Davies
patent: 2866256 (1958-12-01), Matlin
patent: 3121130 (1964-02-01), Wiley et al.
patent: 3180910 (1965-04-01), Buhmann
patent: 3372920 (1968-03-01), Corbett et al.
patent: 3709970 (1973-01-01), Hemker

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