Scraper blades for extruder

Details Scraper blades for extruder Scraper blades for extruder

1997-10-16

1998-11-17

Nguyen, Khanh P

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

425200, 425209, 4253823, 366 79, 366 81, B29C 4738

Patent

active

058372954

ABSTRACT:
Angled scraper blades provided on the end of a screw shaft of an extruder provide thrust for propelling polymer toward the die opening of the extruder. The scraper blades help prevent trapping of polymer between the shaft and the die plate of the extruder, which trapping can lead to scorching, burning or break down of the polymer.

REFERENCES:
patent: 3605186 (1971-09-01), Wagner
patent: 4365946 (1982-12-01), Anders
patent: 4541982 (1985-09-01), Upmeier
patent: 4881886 (1989-11-01), Neuman
patent: 4958933 (1990-09-01), Zakich
patent: 5000900 (1991-03-01), Baumgartner
patent: 5129729 (1992-07-01), Geyer
patent: 5153009 (1992-10-01), Voigt
patent: 5158784 (1992-10-01), Semmekvot

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