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Scrivener Publishing
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Beverly, MA 01915-6106
Publishers at Scrivener
Martin Scrivener ([email protected])
Phillip Carmical ([email protected])
Plastics Process Analysis, Instrumentation, and Control
Johannes Karl Fink
Montanuniversität Leoben, Austria
Copyright © 2021 by Scrivener Publishing LLC. All rights reserved.
Co-published by John Wiley & Sons, Inc., Hoboken, New Jersey, and Scrivener Publishing LLC, Salem, Massachusetts.
Published simultaneously in Canada
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Preface
This book focuses on plastics process analysis, instrumentation, and control. Here, the subject of process analysis, instrumentation and control for modern manufacturing in the plastics industry are detailed.
Process analysis is the starting point since plastics processing is different from processing of metals, ceramics, and other materials. Plastics materials show unique behavior in terms of heat transfer, fluid flow, viscoelastic behavior, and a dependence of the previous time, temperature and shear history which determines how the material responds during processing and its end use. Many of the manufacturing processes are continuous or cyclical in nature. The systems are flow systems in which the process variables, such as time, temperature, position, melt and hydraulic pressure, must be controlled to achieve a satisfactory product which is typically specified by critical dimensions and physical properties which vary with the processing conditions. Instrumentation has to be selected so that it survives the harsh manufacturing environment of high pressures, temperatures and shear rates, and yet it has to have a fast response to measure the process dynamics. Many times the measurements have to be in a non-contact mode so as not to disturb the melt or the finished product. Plastics resins are reactive systems. The resins will degrade if the process conditions are not controlled. Analysis of the process allows one to strategize how to minimize degradation and optimize end-use properties.
The main goal of the book is to cover the field of automatic process control and instrumentation for plastics processing and also the new topics of statistical process control and process monitoring, which are required to document good manufacturing practices.
The
