Handbook of Molded Part Shrinkage and Warpage

A masterclass in a book: Fischer provides expert and authoritative guidance on how to create an accurately shaped and sized molded part, dealing with each of the numerous variables that can affect the output and providing advice as well as hard data to enable readers to predict distortions and minimize their occurrence.

Jerry Fischer (Author)

9781455725977

Hardback, published 11 January 2013

292 pages
27.6 x 21.5 x 2.3 cm, 1.06 kg

"This is a great book." --INJECTION MOLDING

How easy life would be if only moldings were the same size and shape as the mold. But they never are, as molders, toolmakers, designers and end users know only too well. Shrinkage means 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 specifically with this fundamental problem. Jerry Fischer’s 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 explains why you never can have a single ‘correct’ shrinkage value. It goes on to demonstrate how to alleviate the problem through 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.

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 Post-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

Subject Areas: Materials science [TGM], Other manufacturing technologies [TDP], Plastics & polymers technology [TDCP]