Most polymers may be used for molds, including all thermoplastics, some thermosets, and some elastomers. There are tens of thousands of different materials available for injection molds and that number is increasing every year. The materials can mixed with alloys or blends of previously developed materials. This allows product designers to choose from a vast selection of materials so they can choose exactly the right properties for the injection molded part or parts they need. Mold materials are chosen based on the strength and function required for the final part and each material has different parameters for molding that must be considered. Common polymers like Epoxy and phenolic are examples of thermosetting plastics while nylon, polyethylene, and polystyrene are thermoplastic.
The article comes from China injection mold manufacturer - Mold Best Assurance Company Limited, website is www.mbamoldanddesign.com