Melt spinning apparatus

Details Melt spinning apparatus Melt spinning apparatus

1988-09-09

1989-07-25

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

Orifice for filaments or fibers

26421114, 4253782, D01D 508

Patent

active

048508365

ABSTRACT:
A melt spinning apparatus particularly applicable to a multifilament spinning for pitch based carbon fibers. The melt spinning apparatus is provided in which a flow uniforming member is attached to a central part on a spinning side of a spinneret having circularly or concentrically arranged nozzles, the flow uniforming member having a sectional diameter at least 3 mm smaller than the diameter of the innermost row of nozzles and a length not smaller than 2 cm. The apparatus is provided with a cooling means as an outer peripheral portion below a spinning pack having an annular blowing port for blowing a cooling gas toward the spun filaments. A gap is provided between the spinning pack and the cooling means and is sealed with a heat insulator.

REFERENCES:
patent: 3299469 (1967-01-01), Charlton
patent: 3508296 (1970-04-01), Ono
patent: 3672801 (1972-06-01), Caldwell et al.
patent: 3824050 (1974-07-01), Balk
patent: 4259048 (1981-03-01), Miani
patent: 4424927 (1984-01-01), Cardell
patent: 4436688 (1984-03-01), Koschinek et al.
patent: 4529368 (1985-07-01), Makansi

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