Handbook of Molded Part Shrinkage and Warpage (Plastics Design Library) Review

Average Reviews:

(More customer reviews)The author covers systematically the subject of shrinkage and warpage of plastic parts made by injection molding. First he defines both and lists factors causing them. In the next part of the book, he deals with controlling mold and post-mold shrinkage and warpage in a great detail, including troubleshooting. Another important topic covered is the computer-aided analysis (CAA). The author discusses the capabilities and limitations of CAA and its applications as a tool for predicting what will happen in the mold and to the molding. A considerable attention is given to case studies using ample illustrations and thorough analysis. One full chapter contains data, such as tables, charts and figures for different polymers unfilled and filled, effects of various process parameters, pressure volume temperature (PVT) curves for several major plastics, general shrinkage characteristics and comparative mold shrinkage values for a great number of plastic materials. There are two appendices, one containing conversion factors and equivalents, the other listing abbreviations, acronyms and material names. Glossary, references and bibliography are also included. The book will be a valuable addition to the library of those, who design parts, molds and processes as well as of those who run the production.

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Product Description:
The handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and tells why you never can have a single ""correct"" shrinkage value. But that's not all. The handbook shows how to alleviate the problem by careful design of the molded part and the mold and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the handbook gives you the data you need to work with.

This is the most complete collection of shrinkage data ever made and includes an extensive compilation of hard-to-find multi-point information on how processing, part design, mold design, material and post mold treatment affect the part's final dimensions. Manufacturers' figures for thousands of grades, along with an exhaustive search of magazines, journals, conference papers, books, web sites and brochures combine to make this a powerful resource.

A lot depends on a dimensionally correct molding. Quality, speed to market, profit margins for the molder and toolmaker, the efficiency of secondary and assembly operations, reputation; all these are on the line. The Mold Shrinkage and Warpage Handbook is the book for people who have to live with shrinkage and warpage. It is the only book for people who have to commit themselves.

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