Extrusion method and extruder used for obtaining phenolic resin

Details Extrusion method and extruder used for obtaining phenolic resin Extrusion method and extruder used for obtaining phenolic resin

1991-11-25

1993-04-20

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26421124, 264236, 264347, 425207, 4253791, 425380, 425381, 425467, B29C 4724

Patent

active

052040399

ABSTRACT:
An extrusion method for obtaining a long phenolic resin pipe having excellent heat resistance by using an extruder having a screw, a cylinder, a die and a mandrel, the mandrel being inserted into a through-hole formed in the screw along the screw axis and protruding into the die along the screw axis, the die satisfying the following formulas

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patent: 3317956 (1967-05-01), Lippens
patent: 3387331 (1968-06-01), Billings
patent: 3870451 (1975-03-01), Gokcen
patent: 4001368 (1977-01-01), Michizoe et al.
patent: 4240782 (1980-12-01), McPhee et al.
patent: 4797242 (1989-01-01), Fukuda et al.
patent: 4798696 (1989-01-01), Per
Plastics, vol. 25, No. 3, pp. 47-52 (1974).

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