Plastic article or earthenware shaping or treating: apparatus – Shaping orifice and downstream work contacting gaseous... – Orifice for filaments or fibers
Patent
1988-10-24
1989-06-27
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Shaping orifice and downstream work contacting gaseous...
Orifice for filaments or fibers
264103, 2641761, 26421122, 26421123, 425145, 4253822, D01D 106
Patent
active
048425036
ABSTRACT:
An apparatus for spinning includes a polymer inlet zone and a spinneret assembly. A first metering pump for pumping a first set of molten polymer streams of equal flow rate to the polymer inlet zone and a second metering pump for pumping a second set of two molten polymer streams of equal flow rate to the polymer inlet zone are provided. The second pump having twice the capacity of the first pump. The spinneret assembly comprises a pair of spinnerets interchangeably locatable in the spinning pack. One of the spinnerets is adapted to combine the first set of streams to produce three ends of filaments and the other of the spinnerets is adapted to combine each of the first streams with a respective one of the second streams to provide two ends of filaments.
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E. I. Du Pont de Nemours and Company
Nguyen Khank
Woo Jay H.
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