PVC (polyvinyl chloride) is best known for its rugged durability, making it a common choice for all-weather applications like flooring and roofing. In packaging, it's used for its rigidity and durability. It's a thermoplastic which means it melts when heated to a certain temperature. This makes it a viable option for injection molding.
PVC has gotten pushback because it it emits harmful chemicals through its entire lifecycle, from manufacturing to disposal. PVC contains chemicals including phalates and chlorine which can cause issues for human health and the atmosphere.