Reaction Injection Molding (RIM) Plastic Parts Design Guide

In 1995 Premold Corp. engineers noticed an urgent need for a comprehensive, easy to use, quick reference design guide for RIM parts.   Drawing on their vast RIM experience and their own experiences as plastic part designers, Premold Corp.'s engineers created their first edition RIM Design Guide.   Since then many additions and refinements have been made.   The result is the most comprehensive, ready reference RIM Design Guide in the industry.

We will continue to keep the Design Guide current and to include the information you want in a straightforward, matter of fact style.   We publish it and make it available for you here not just to benefit Premold Corp. but the entire plastics industry as well.

Please download your copy in Adobe Acrobat Reader format (PDF).

Design Guide Download (PDF)

If you do not have Adobe Acrobat Reader, you can download a copy from the Adobe website.

In our RIM Design Guide you will find:

• Understanding RIM process
• Advantages of the RIM process
• RIM Materials
• How to design for the RIM process
• Cost saving ideas
• Tolerances
• Threaded inserts
• Insert and encapsulation molding
• Painting and Masking
• EMI coatings
• Reveal joint design
• Molded-in letter and logo design