Guidelines for Part & Tool Design for Molding Rigid Clear Materials

摘要

The injection molding of rigid clear materials can often be a challenge due to their stiff-flowing nature and somewhat brittle mechanical properties. These materials can range from low-cost crystal polystyrene to higher-performance materials such as impact-modified acrylics or copolyesters. I'm often asked to troubleshoot molds for these clear, stiff materials, facing issues such as poor surface cosmetics, cracking at ejection (e.g., Figure 1), and underfilled regions of the part.