Download the Kynar^® PVDF Injection Molding White Paper

Abstract:
Kynar® Polyvinylidene fluoride (PVDF) has long been used as a fluoropolymer for injection molding. With its robust chemical and temperature resistance, Kynar® PVDF components such as valves, pumps, fittings, and other molded parts offer high-performance properties. Having the lowest melting point of any fluoropolymer, Kynar® PVDF can be processed on equipment used to mold polyolefin components. Common practices for molding Kynar® PVDF resins will be outlined in the paper, with recommendations for optimal processing conditions. Furthermore, common issues and troubleshooting for defects such as splay, voids, warpage, and discoloration will be discussed. The paper will also highlight new Kynar® PVDF low-shrink technologies that allow for fluoropolymer resin properties as a “drop-in” replacement using the same molds as polyolefins. Advancements in technology by adding glass or carbon fillers to Kynar® PVDF resins have greatly reduced the shrinkage values to as low as 0.5%.