System for polymer crystallization

Single-crystal – oriented-crystal – and epitaxy growth processes; – Apparatus – For crystallization from liquid or supercritical state

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

23295R, 117 4, 117204, C30B 3500

Patent

active

054109841

ABSTRACT:
A system for crystallization of polymers involving the use of a stationary housing with a rotor mounted for rotation within the housing. The rotor supports a plurality of spaced apart hollow discs and heated fluid is delivered to the interior of the discs. The polymer material to be treated is fed into the housing for heat exchange contact with the exterior surfaces of the discs. The rotation of the discs in addition serves as the propelling force for the material along the length of the housing at which point the material is discharged. The speed of rotation of the rotor is controlled to influence agitation and conveying of material in the housing to thereby control the crystallization reaction. A holdup mechanism which operates independently of the speed control is located adjacent the discharge location to contribute to the fixing of the residence time. The material inlet operation, discharge operation and residence control are such that the ratio of crystallized to uncrystallized material is maintained within desired limits, typically at about 4 to 1. The method and apparatus provides various other operating parameters and structural features which maximize the efficiency of the crystallization reaction.

REFERENCES:
patent: 2642342 (1953-06-01), Vahl
patent: 3393055 (1968-07-01), Stevenson
patent: 3844725 (1974-10-01), Nenicka
patent: 4161578 (1979-07-01), Herron
patent: 4223128 (1980-09-01), Halek et al.
patent: 4486395 (1984-12-01), Witte et al.
patent: 5230769 (1993-07-01), Jancic et al.
TorusDisc Dryer Article; Bepex Corporation; pp. 1-7.
Crystal Growth; 2nd ed.; Pamplin; pp. 56-57; (1980), Section 2.8(2.8.1).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

System for polymer crystallization does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for polymer crystallization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for polymer crystallization will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1130431

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.