Browse Publications Technical Papers 2000-01-2689
2000-10-03

Dual Injection Molding and Automotive Glazing 2000-01-2689

This paper outlines the requirements for obtaining a transparent PC-PMMA sandwich composite for use in an automotive glazing application. It is shown that transparency can be maintained if turbulent interfacial mixing is kept to a minimum through slow injection and careful matching of the skin and core material rheologies. If significant interfacial mixing is present then the difference in refractive indices of the two materials must be less than ± 0.002 for transparency to be maintained. The melt temperature difference between skin and core material can be no more than ± 30°C otherwise thermal degradation occurs along with difficulties in achieving full cavity fill.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X