Identify the following polymer processing techniques as either: (i) Continuous (able to operate for very long periods of time as long as enough polymer is supplied), (ii) Batch or semi-continuous (able to make one material at a time, or possibly operate in a cyclic
Identify the following polymer processing techniques as either: (i) Continuous (able to operate for very long periods of time as long as enough polymer is supplied), (ii) Batch or semi-continuous (able to make one material at a time, or possibly operate in a cyclic
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:17.5. Identify the following polymer processing techniques as either:
(i) Continuous (able to operate for very long periods of time as long as enough polymer is supplied),
(ii) Batch or semi-continuous (able to make one material at a time, or possibly operate in a cyclic
or
fashion for a long time with small breaks between processing)
THERMAL EXTRUSION
CASTING TO FORM A THERMOSET POLYMER
BLOW MOLDING
MELT SPINNING OF FIBERS
THERMOFORMING
- INJECTION MOLDING
- BLOW EXTRUSION
- CALENDERING
- COMPOUNDING
- ROTATIONAL MOLDING
17.6. You work at a plant that makes poly(ethylene terephthalate), PET, bottles using blow molding, but the
production line is having a problem with lots of rejected bottles, which must be ground up and
recycled. The rejected bottles sometimes have holes in the threaded part at the top of the bottle
(where the screw-cap goes), or this part is often too thin and not rigid enough for the screw cap to fit
snugly.
A. Give a likely explanation of what is causing the problem.
B. Suggest two changes to the process that will help resolve this problem.
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