AFFINITY PT 1409 Dow Chemical North America Polyolefins Miscible in organic solvent AFFINITY™ PT 1409 Polyolefin Plastomer (POP) is produced via INSITE* technology from Dow Plastics. It is used as monolayer in coextrusion coating for packaging applications. Polyolefin plastomer. Used as monolayer in coextrusion coating for packaging applications.