Injection Molding

The GLS Injection Molding Guide for styrenic TPEs

The GLS Injection Molding Guide provides in-depth information on part design, mold design and processing for styrenic block copolymer (SBC) thermoplastic elastomers (TPEs). On this page you will find the online, condensed version of this guide, offering quick answers to your injection molding questions.

You can also download the entire document for long-term reference.

If you would like to speak directly with a GLS technical specialist, give us a call at 800-457-8777 or send us an email.

Online Injection Molding Guide

• SBC Rheology
• General Concepts
• Flow Length and Wall Thickness
• Undercuts
• Gate and Knit Line Locations
• Anisotropy
• Shrinkage

• Steel Selection
• Mold Surface Treatment
• Sprue and Sprue Puller Design
• Conventional Runner Design
• Runner Keepers
• Gate Design and Location
• Mold Venting
• Part Ejection
• Mold Cooling
• Hot Runner Systems
• Manifold Design
• Hot Runner Gate Design

• Drying
• Coloring
• Regrind
• Purging
• Temperatures
• Mold Filling, Packing and Cooling
• Maintaining Cushion
• Effects of Molding Conditions
• Molding Soft Compounds
• Molding Hard Compounds

• Approach
• Startup Issues
• Quality Control Issues