Plastic article or earthenware shaping or treating: apparatus – Shaping orifice and downstream work contacting gaseous...
Patent
1978-04-04
1980-09-30
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Shaping orifice and downstream work contacting gaseous...
264176F, 264237, 4253822, 425462, B29C 2500
Patent
active
042252997
ABSTRACT:
Air quench extrusion apparatus and method are described for extruding yarn from polyolefin material. The yarn is first extruded downwards into a hot zone surrounded by a shroud, and then passes through a quenching zone across which cooling air, or gas, is moved to cool the yarn. Immediately adjacent the lower end of the quenching zone is disposed a denier control roll for pulling the yarn out of the quenching zone at a controlled rate causing the yarn to be drawn down in denier in the hot zone. The hot zone is small in volume relative to the quenching zone and contains quiescent air at a temperature close to that at which the material is extruded. The height of the apparatus from extrusion to the denier control roll is less than 10 feet, allowing the apparatus to be located in a single story building. At least two multi-filament yarns are simultaneously extruded into the hot zone which is rectangular in cross-section.
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patent: 4077752 (1978-03-01), Zahn
Hunter Edward B.
Kling-Tecs, Inc.
Nolte, Jr. Albert C.
Woo Jay H.
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