Apparatus for forming films of constant thickness

Details Apparatus for forming films of constant thickness Apparatus for forming films of constant thickness

1984-05-01

1985-12-03

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366 90, 366301, B29B 110

Patent

active

045563241

ABSTRACT:
Counter-rotating intermeshing rotors are employed to generate films of viscous material to enhance processing. The rotors are configured that they trap viscous material in open-ended chambers defined by the rotor surfaces. As rotation proceeds the chambers decrease in volume and the material is expelled through the ends of the chambers as a film. Longitudinally adjacent rotors each have a different angular orientation about their centers of rotation to provide a sawtooth stepped helix to convey material longitudinally.

REFERENCES:
patent: 529837 (1894-11-01), Quimby
patent: 2502563 (1950-04-01), Goodchild
patent: 3734468 (1973-05-01), Cheng et al.
patent: 3927869 (1975-12-01), Hanslik
patent: 4040607 (1977-08-01), Ullrich
patent: 4131371 (1978-12-01), Tynan
patent: 4343929 (1982-08-01), Sugio et al.
patent: 4352568 (1982-10-01), Lohr et al.
patent: 4406601 (1983-09-01), Towner

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