Dewatering and drying of EP(D)M

Details Dewatering and drying of EP(D)M Dewatering and drying of EP(D)M

1996-12-23

1998-03-24

Bennett, Henry

Drying and gas or vapor contact with solids

Process

Mechanical liquid removal

F26B 504

Patent

active

057299110

ABSTRACT:
A process for continuous dewatering/drying of EP(D)M rubber is disclosed. The process comprises continuously charging wet EP(D)M crumb into a single screw extruder having particular structural features and conveying the wet crumb through the length of the extruder under conditions sufficient to expel water, increase the pressure across the die plate of the extruder and heat the crumb. The dried crumb thus extruded is characterized in that it contains less than 1% water. The single screw extruder suitable for the process comprises an inlet or feeding end, an expeller section which contains cage bars, an expander section having a solid shell cover positioned immediately downstream from the expeller section, a die plate and a screw having a constant pitch and a, preferably gradually, decreasing channel depth.

REFERENCES:
patent: 3067462 (1962-12-01), Kullgreen
patent: 3230865 (1966-01-01), Hibbel et al.
patent: 4185057 (1980-01-01), Rossiter et al.
patent: 4508592 (1985-04-01), Kowalski
T. Sakai et al in Epxerimental Study on Dewatering and Devolatilizing Operations Using Intermeshed Twin Screw Extruders, Intern. Polymer Processing VIII (1993) 3, (month unavailable) p. 218.

Affiliated with

Also associated with

Rating

Dewatering and drying of EP(D)M does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dewatering and drying of EP(D)M, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dewatering and drying of EP(D)M will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2280628