chemclass101

What type of process would be most closely related to the foundry process? Are the coatings used as a way to release the plastic from the mold or what else are they used for? I know very little about the manufacturing of plastics, so any detailed information that walks me through the process start to finish would be helpful... is there a website that would be helpful to use?

I wanted to know what goes into the process of plastic manufacturing… for example are molds used? Are there coatings that are used on the molds, if so why and how do they work? I have recently come to understand that the foundry industry uses coatings on sand cores to improve the metals surface finish… how closely are the foundry and plastic industries related? Thanks in advance!