Heating and drawing of synthetic filaments

Details Heating and drawing of synthetic filaments Heating and drawing of synthetic filaments

1978-01-25

1980-08-12

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Disparate treatment of article subsequent to working,...

Effecting temperature change

81493, 81512, 28240, 28246, 28271, 2642884, 2642905, 264346, B29C 2500, B29D 1702

Patent

active

042173230

ABSTRACT:
A method of providing a hot section in a continuously moving synthetic yarn comprises directing at least one jet of hot fluid obliquely across the moving yarn. The jet intersects the yarn at an obtuse angle to the approaching yarn. The method also produces drawn yarn by passing undrawn yarn into the jet and tensioning the yarn as it passes through the jet. Apparatus for performing the method includes a body member formed with a chamber formed with yarn entry and exit passages and a fluid ejecting nozzle. The body member may be additionally formed with a cavity opening from the chamber opposite the nozzle.

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