COVID-19 Update: We are currently shipping orders daily. However, due to transit disruptions in some geographies, deliveries may be delayed. To provide all customers with timely access to content, we are offering 50% off Science and Technology Print & eBook bundle options. Terms & conditions.
Handbook of Molded Part Shrinkage and Warpage - 1st Edition - ISBN: 9781884207723, 9780815517603

Handbook of Molded Part Shrinkage and Warpage

1st Edition

Authors: Jerry Fischer Jerry Fischer
Hardcover ISBN: 9781884207723
eBook ISBN: 9780815517603
Imprint: William Andrew
Published Date: 2nd June 2003
Page Count: 263
Sales tax will be calculated at check-out Price includes VAT/GST
Price includes VAT/GST

Institutional Subscription

Secure Checkout

Personal information is secured with SSL technology.

Free Shipping

Free global shipping
No minimum order.

Table of Contents

Pressure-Volume-Temperature (PVT) Behavior
Recrystallization and Stress Relief
Mold Shrinkage (<24 hours)
Post Mold Shrinkage (>24 hours)
Crystalline vs. Amorphous
Anisotropic Behavior
Effect of Fillers
Effect of Pigments
Moisture Absorption
Low Warp Materials
Part Design
Geometry & Thickness
Sink Marks
Mold Design
Gate Design and Location
Runner and Mold Cooling Design
Part Ejection
Mold and Injection Temperature
Holding Pressure and Time
Injection Speed and Pressure
Molded In Stress
Annealing/Stress Relieving
Post Mold Fixturing
Factors Affecting Post Mold Shrinkage
Pitfalls to Avoid
Gas Assist and Multi Component Molding Options
Computerized Shrinkage and Warpage Analysis
How Does It Work?
Does It Work?
How Much Does It Cost?
How and When to Use It
Shrinkage and Warpage in Specific Applications
Material Specific Data Collection of Hundreds of Graphs and Tables
Shrinkage versus:
Wall Thickness and Part Geometry
Mold and Injection Temperatures
Holding and Injection Pressures
Time at Various Temperature and Humidities
Filler Content
PVT Curves
Shrinkage Comparison for Thousands of Grades
Discussions on Mold Shrinkage, Post Mold Shrinkage and Warpage


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.


Plastics engineers, technicians, and scientists in injection molding facilities.


No. of pages:
© William Andrew 2003
2nd June 2003
William Andrew
Hardcover ISBN:
eBook ISBN:


"This is a great book." - Injection Molding Magazine

Ratings and Reviews

About the Authors

Jerry Fischer

Affiliations and Expertise

Tools and Troubleshooting, Inc.

Jerry Fischer

Affiliations and Expertise

Tools and Troubleshooting, Inc.