Process for the manufacture of insulated winding wires through e

Details Process for the manufacture of insulated winding wires through e Process for the manufacture of insulated winding wires through e

1982-01-04

1983-09-27

Derrington, James H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Layered, stratified traversely of length, or multiphase...

174110A, 174110D, 174110PM, 428386, B29F 310

Patent

active

044068514

ABSTRACT:
An extrusion process for the manufacture of insulated winding wires. Part crystalline thermoplastic polycondensates with crystallite melting points above 170.degree. C., preferably above 250.degree. C., are extruded. Polyethylene terephthalate is the polycondensate of choice. These are filled with 5-15% by weight titanium dioxide. The result is the avoidance of fissure formation.

REFERENCES:
patent: 2889304 (1959-06-01), Sheffer et al.
patent: 3893642 (1975-07-01), Van Vlaenderen
patent: 4145474 (1979-03-01), Kertscher et al.
Modern Plastics Encyclopedia 1968, Sep. 1967, vol. 45, No. 1A, p. 454.
Seymour; Raymond B., Additives for Plastics, vol. 2, New York, 1978, Academic Press, p. 114.
Bjorksten et al., Polyesters and Their Applications, Reinhold Pub. Corp., New York, 1956, p. 95.

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