Apparatus for producing melt-spun filaments

Details Apparatus for producing melt-spun filaments Apparatus for producing melt-spun filaments

1980-06-30

1981-09-08

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

264129, 264176F, 425 94, 4253822, B29C 2500

Patent

active

042882079

ABSTRACT:
Disclosed is a melt-spinning process of the type wherein molten polymer is extruded downwardly through a filter pack and through an annular array of holes of a spinneret to form a circularly arranged group of filaments. Quench gas is delivered downwardly through said pack and spinneret coaxially relative to said row of holes and then redirected and discharged outwardly through the group of filaments. A finish substance is sprayed onto the filaments, and the filaments are gathered and redirected at a guide. The finish spraying comprises the steps of conducting the finish substance through the pack and through the spinneret internally of the flow of quench gas, and discharging the finish substance outwardly from within the group of filaments at a level below the discharge of quench gas.

REFERENCES:
patent: 3135811 (1964-06-01), Barnett et al.
patent: 3628931 (1971-12-01), Russell
patent: 3969462 (1976-07-01), Stofan
patent: 4038357 (1977-07-01), Boyes et al.
patent: 4204828 (1980-05-01), Peckinpaugh et al.
"Quench Duct Filament Oiling", Chemie Faseru/Textilindustrie, Oct. 1979, pp. 838-842.

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