Apparatus for delivering molten polymer to an extrusion

Details Apparatus for delivering molten polymer to an extrusion Apparatus for delivering molten polymer to an extrusion

1989-12-08

1991-10-29

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With upstream screen or perforated plate for straining,...

425205, 425208, 4253823, B29C 4708

Patent

active

050611704

ABSTRACT:
A polymer metl delivery system includes a preheated hopper, a high clearance auger, a gear pump, and provisions for delivering heat to the polymer. The resin is melted and fed to the auger and pumped to the gear pump and further pump to an extrusion die. Heat is added to the polymers from the hopper and throughout its course to the outlet connection for the extrusion die. The preheated in the hopper includes heat conductive fins. The system is particularly suited for use in combination with a meltblowing die.

REFERENCES:
patent: 170761 (1875-12-01), Morand
patent: 1156096 (1915-10-01), Price
patent: 2253176 (1941-08-01), Graves
patent: 2278875 (1942-04-01), Graves
patent: 2295942 (1942-09-01), Fields
patent: 4329128 (1982-05-01), Forgues
patent: 4336213 (1982-06-01), Fox
patent: 4642040 (1987-02-01), Fox

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