PVC External Lubricant

About This Product

Lubricants in PVC are divided by where they act. An external lubricant has limited compatibility with the polymer, so it migrates to the melt surface and forms a film between the compound and the hot metal of the screw, die or roll. That film controls friction and release; without it PVC sticks to the metal, degrades in place and leaves deposits that mark the extrudate. The trade-off is that too much external lubricant delays fusion, weakens the weld lines in a profile and can plate out on the die. Grade selection is therefore about matching the release effect to the process temperature and shear, which is why a range exists rather than a single product. One grade serves PVC processing, master batches and rubber lubrication. A second, in both powder and white round flake form, is for pipe, fittings and foam board. A third covers PVC processing, master batches, hot melt adhesive and road marking, and a fourth adds CPVC processing. L-G70S is a pale yellow powder or flake for aggregate, plate and calendered film processing, packed in cartons with PE liner. L-G74 is a light yellow to white solid used as an external lubrication release agent for rigid PVC profile, plate, pipe fittings and louvers.