Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1988-05-09
1990-03-20
Lorin, Hubert C.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
26421117, 264234, 264237, 264345, 264348, D01F 662
Patent
active
049099760
ABSTRACT:
The high speed melt spinning of synthetic polymer fibers is provided with on-line zone heating and cooling by which the strand emerging from the spinneret is initially cooled to an optimum temperature above the glass transition point of the polymer, the maintained near that temperature for a period of time to promote development of desirable fiber properties such as crystallization and crystal orientation, and then finally cooled below the solidification point for take up.
REFERENCES:
patent: 3946100 (1976-03-01), Davis et al.
patent: 4195051 (1980-03-01), Frankfort et al.
Chen Gao-Yuan
Cuculo John A.
Denton Jeffrey
Lin Chon-yie
Lundberg Ferdinand
Lorin Hubert C.
North Carolina State University
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