Document Type
Thesis
Date of Award
6-30-1990
Degree Name
Master of Science in Electrical Engineering - (M.S.)
Department
Electrical and Computer Engineering
First Advisor
Keith T. O'Brien
Second Advisor
R. S. Sodhi
Third Advisor
Anthony D. Rosato
Abstract
The objective of the thesis is the manufacture of thermoplastic bilobal and trilobal profiled pellets for the determination of the interparticulate co-efficient of friction exhibited by solid beds of such pellets. The enhancement of the interparticulate coefficient of friction is expected to lead to ameliorated solids conveying rates in plasticating extruders.
Predicting the product shape from a profile die is very difficult due to the elastic memory of plastics and the complex boundary conditions. Consequently the cost involved in experimenting with different profile dies is high. Therefore a standard die with several die inserts of varying cross-sections were used to manufacture the bilobal and trilobal shapes, at reasonable cost, and for a variety of materials.
After much "trial - and - error" and different "sizing" techniques, bilobal and trilobal pellets were manufactured for the materials tested, using a variety of dies under specific operating conditions.
This project is being performed in several parts:
1. The manufacture of the profiled pellets, which is the subject of this thesis.
2. Measuring the interparticulate coefficient of friction which is the subject of concurrent work (12).
3. Field trials using a full size extruder to determine if solids conveying is enhanced, which will be a future thesis.
Recommended Citation
Cherian, Oommen, "Improving solids conveying in plasticating extruders : an investigation into manufacturing processes and manufacturing systems for profiled thermoplastic pellets" (1990). Theses. 2646.
https://digitalcommons.njit.edu/theses/2646
