Extruder Principles and Operation

Stevens, M.J.; Covas, J. A.

ISBN 10: 0412635909 / ISBN 13: 9780412635908

Editore: Chapman and Hall, 1995

Aims to bridge the gap between theoretical studies and the practical experience of the processor in the extrusion of thermoplastic polymers and rubbers. This title offers guidance on operational strategies and the likely effects in terms of output, quality, uniformity and stability. Num Pages: 494 pages, biography. BIC Classification: TDCP. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly. Dimension: 234 x 156 x 28. Weight in Grams: 890. . 1995. 2nd ed. 1995. Hardback. . . . . Books ship from the US and Ireland. Codice articolo V9780412635908

Riassunto:

This book is intended to fill a gap between the theoretical studies and the practical experience of the processor in the extrusion of thermoplastic polymers. The former have provided a basis for numerical design of extruders and their components, but generally give scant attention to the practical performance, especially to the conflict between production rate and product quality. In practice extruders are frequently purchased to perform a range of duties; even so, the operator may have to use a machine designed for another purpose and not necessarily suitable for the polymer, process or product in hand. The operator's experience enables him to make good product in unpromising circumstances, but a large number of variables and interactions often give apparently contradictory results. The hope is that this book will provide a logical background, based on both theory and experience, which will help the industrial processor to obtain the best performance from his equipment, to recognize its limitations, and to face new problems with confidence. Mathematics is used only to the extent that it clarifies effects which cannot easily be expressed in words; ifit is passed over, at least a qualitative understanding should remain. The approximate theory will not satisfy the purist, but this seems to the authors less important than a clear representation of the physical mechanisms on which so much of the polymer processing industry depends. M. J. STEVENS J. A.

Contenuti: Introduction. Practical extrusion processes and their requirements. Flow behaviour relevant to extrusion. Thermal and energy properties in processing. Extrusion dies. Principles of melt flow in single-screw extruders. Solids conveying and melting in single-screw extruders. Principles of energy balance. Operation of single-screw extruders. Twin-screw extruders. Extruder operation as part of a total process. Practical extruder operation. Application to the individual machine. Appendices. References. Index.

Dati bibliografici

Titolo: Extruder Principles and Operation
Casa editrice: Chapman and Hall
Data di pubblicazione: 1995
Legatura: Rilegato
Condizione: New
Edizione: seconda edizione