Description
Polymer Extrusion : Black-box Reveal, Hardcover by Wong, Anthony Chi-ying, ISBN 1569909172, ISBN-13 9781569909171, Like New Used, Free shipping in the US Plastics extrusion is one of the most important industrial processes worldwide. Over past decades, understanding of extrusion technologies has advanced by the global research efforts, but, due to the fact that the metal barrel hinders direct visualizations to be made by the naked eye, the “true” dynamic processing characteristics of extrusion processes remain unclear. Analytical attempts have thus been carried out either by indirect, static empirical approaches or theoretical mathematical analyses. None of them offer a realistic depiction of what takes place inside the barrel during an extrusion process. As such, the barrel can be considered as a “black-box”. This book reveals the “true” dynamic extrusion processing characteristics, accumulated from years of research experience based on the novel visualization technique developed by Professor Zhu of the Beijing University of Chemical Technology. The qualitative discussions within provide not only insight into the scientific aspects of the subject, but also information of practical significance for those in the industry who need to perform process and hardware designs and optimizations. Included are conventional mathematical representations of the single- and twin-screw extrusion technologies. This provides a comprehensive foundation for undergraduate courses in, ., plastics processing engineering. Other topics covered are specifically selected to provide a comprehensive technical and market-trend background to readers at all levels. The current status and future potential of sustainable and biodegradable polymers are also emphasized.
Rocsana Akter kajol
The book I bought was reasonably priced and when it arrived it was in the 'Like New' condition specified in the listing. However, when I saw that the seller had not shipped the book after more than 15 days had passed since my order I felt I must write to say that I had actually placed an order with the seller and inquire when it planned to send the book. The brusque reply was that a tracking number was available, but no number HAD been created until I pointed out that I had placed the order.
ProtHd2c30d7
Item as described. Poly mailer, no padding. Description clearly states delivery window of several weeks. Yet I chose this seller because item is new. Purchased/paid April 16, shipped April 28, arrived Maryland to SC May 5.This after contacting seller on day 10 to ask why it had not shipped yet. Slow return communication requesting invoice number/transaction date. Just be aware. IMHO eBay has sellers with faster, more efficient delivery service.
user29808663
Good price for the book. Shipping was slow. Messaged the seller a week after I ordered it to see when they were going to ship it. They responded immediately and said it would be shipped out soon. Got it about a week later. Book did arrive in the date range that they provided though  Minimal packaging. Book is Shrink wrapped and only wrapped in thin plastic. No bubble wrap. Book is in good shape though.