Process and apparatus for extruding plastic foams through a fluo

Details Process and apparatus for extruding plastic foams through a fluo Process and apparatus for extruding plastic foams through a fluo

1980-09-22

1982-04-13

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 53, 264338, 425461, 425DIG55, 425DIG115, B29D 2700, B29C 104

Patent

active

043247482

ABSTRACT:
In a method for producing a plastic foam of a desired expanded dimension which is constituted by extruding a melt of a thermoplastic synthetic resin containing a blowing agent through a die of an extruder and passing the extrudate through a shaping device located outwardly of the extruder and secured to the discharge end of the extruder while expanding and solidifying the molten mass so that it fills the shaping device; the improvement wherein at least a part of that area of the inside surface of the shaping device with which the expanded resin makes contact is formed of a plate of a fluorocarbon resin, said plate being secured to the inside surface of the shaping device by fitting portions, said fitting portions having a sufficient space for absorbing an increase in the volume of the fluorocarbon resin plate at the temperature of extrusion molding; and an apparatus for use in the above described process.

REFERENCES:
patent: 519801 (1894-05-01), Wallace
patent: 1240019 (1917-09-01), Board
patent: 2403476 (1946-07-01), Berry et al.
patent: 2740157 (1956-04-01), McCurdy et al.
patent: 2747222 (1956-05-01), Koch et al.
patent: 3033008 (1962-05-01), Davis
patent: 3111714 (1963-11-01), Branscom
patent: 3127457 (1964-03-01), Di Pinto
patent: 3446884 (1969-05-01), Miller et al.
patent: 3874981 (1975-04-01), Hayashi et al.
patent: 3897528 (1975-07-01), Suh
patent: 3920876 (1975-11-01), Albert et al.
patent: 3954929 (1976-05-01), Hoenke
patent: 4017576 (1977-04-01), Freed et al.

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