OPE wax used for lubrication

OPE wax is a plastic processing aid that provides both internal and external
lubrication. It is widely used in the extrusion, injection molding, and
calendering processes of thermoplastic resins such as PVC, PE, and PP to
reduce melt viscosity, minimize equipment friction, improve demolding
properties, and enhance the surface gloss of finished products.‌‌
‌Internal Lubrication: The polar groups of the molecules are partially
compatible with the resin, reducing intermolecular friction, promoting
plasticization, and reducing energy consumption.
External Lubrication: It migrates to the melt-metal interface to form a
lubricating film, preventing roller/mold sticking, improving flow, and
enhancing demolding efficiency. It performs exceptionally well in rigid PVC
profiles, pipes, and cable compounds.
Balanced Lubricity: Compared to polyethylene wax, OPE wax introduces polar
groups through oxidation, resulting in more balanced internal and external
lubrication in polar systems and reduced tendency to bloom.