Copolyester is the modified form of polyesters, which are combinations of diols and diacids. For instance, if we introduce diacids, like isophthalic acid, or diols, like cyclohexane dimethanol to the polyester polyethylene terephthalate (PET), the material turns into a copolyester. PETG, PCTA, and PCTG are glycol-modified copolyesters, or otherwise known as “glass” polymers.
What is Extrusion Blow Molding?
Extrusion Blow Molding (EBM) is a common blow molding technology used with many different types of plastics, including, but not limited to, PP (Polypropylene), HDPE (High-Density Polyethylene), PETG (Polyethylene Terephthalate Glycol) and PVC (Polyvinyl Chloride). It’s commonly used for containers requiring special barriers to oxygen and moisture to improve stability.
Polymethyl Methacrylate (PMMA), being the first transparent thermoplastic material, contributed to the use of plastic materials as a substitute for optically transparent glass applications.
