Method of and apparatus for producing a pipe of thermoplastic sy

Details Method of and apparatus for producing a pipe of thermoplastic sy Method of and apparatus for producing a pipe of thermoplastic sy

1989-10-16

1991-05-28

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

156161, 156162, 156188, 15624413, 264173, 264174, 2642092, 2642905, 264 407, 425114, 4253822, 4253823, 425463, 4251311, 4251335, B29C 4706

Patent

active

050193090

ABSTRACT:
Monofilament threads which are wound around a thermoplastic synethetic resin core tube to form one or more reinforcement coils are generated as they are wrapped around the core tube by liquid crystalline polymer material emerging from respective spinning nozzles which rotate around the core tube while a difference in speed is maintained between the speed at which the reinforcing plastic emerges from the nozzle and the monofilament thread is wound on the core tube to maintain a stretch in the monofilaments.

REFERENCES:
patent: 2398876 (1946-04-01), Bailey
patent: 2810424 (1957-10-01), Swartswelter et al.
patent: 2994104 (1961-08-01), Mittag
patent: 3015133 (1962-01-01), Nichols
patent: 3633629 (1972-01-01), Rider
patent: 3687765 (1972-08-01), MacLean et al.
patent: 3890181 (1975-06-01), Stent et al.
patent: 4112031 (1978-09-01), Gohlisch
patent: 4826423 (1989-05-01), Kemp et al.

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