Undercut feed section screw

Details Undercut feed section screw Undercut feed section screw

1974-07-05

1976-04-13

Aegerter, Richard E.

Plastic article or earthenware shaping or treating: apparatus

Projection

259 10, 425208, B29B 110

Patent

active

039499731

ABSTRACT:
A screw for injection molding of synthetic resinous material having a tendency to abrade and score the injection molding apparatus is provided along a substantial length of the feed section with a substantially undercut screw flight. An average particle of synthetic resinous feed stock material may pass between the undercut screw flights and a cooperating barrel without squashing. The undercut screw flights are effective to provide a controlled feed pressure for the particulate material entering the downstream portion of the screw.

REFERENCES:
patent: 3115674 (1963-12-01), Schrenk et al.
patent: 3149377 (1964-09-01), Morse
patent: 3300811 (1967-01-01), Berger
patent: 3496603 (1970-02-01), Listner et al.
patent: 3535737 (1970-10-01), Hendry
patent: 3752449 (1973-08-01), Schwab et al.
patent: 3825235 (1974-07-01), Schwertfeger et al.
patent: 3850415 (1974-11-01), Hansen

Affiliated with

Also associated with

Rating

Undercut feed section screw does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Undercut feed section screw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Undercut feed section screw will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-748287