Device for cooling molten filaments in spinning apparatus

Details Device for cooling molten filaments in spinning apparatus Device for cooling molten filaments in spinning apparatus

1991-01-08

1992-12-22

Simmons, David A.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

Orifice for filaments or fibers

26421113, 26421114, 26421117, B29C 3506

Patent

active

051733102

ABSTRACT:
A device for cooling molten filaments in a spinning apparatus is improved by using a heating wire type heater in which a pitch of the heating wires surrounding the cooling apparatus is made closer in the upstream (top) region of the extruded filament than in the downstream (bottom) region. Through use of the device the temperature of the cooling air blown from the cooling apparatus for a plurality of molten filaments extruded from a die is controlled so that the cooling is made progressively stronger from the upstream side (i.e., top side) to the downstream side (i.e., bottom side).

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