by Jerry M. Fischer

Shrinkage ensures that the size is always different. Warpage often changes the shape too. The effects are worse for some plastics than others. Why is that? What can you do about it? The Handbook of Molded Part Shrinkage and Warpage is the first and only book to deal with this fundamental problem.

It 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.

Handbook of Molded Part Shrinkage and Warpage is the book for people who have to live with shrinkage and warpage.

Contents

1. Introduction to Plastics Processing
2. Shrinkage and Warpage
3. Causes of Molded-Part Variation: Part Design
4. Causes of Molded-Part Variation: Material
5. Causes of Molded-Part Variation: Mold Design
6. Causes of Molded-Part Variation: Processing
7. Factors Affecting Post-Mold Shrinkage and Warpage
8. Controlling Mold and Pos-Mold Shrinkage and Warpage
9. Computer-Aided Analysis
10. Case Studies
11. Data

Appendix A: Conversion Factors and Equivalents
Appendix B: Abbreviations, Acronyms and Material Names
Glossary
Index

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