M/S, PATELS POLY-PACK offers superior extrusion lamination products for different packaging and lamination requirements. Packaging extrusion lamination is a converting process by the combination of two substrates using a molten polymer. In this process, the extrudate enters the nip, which is formed by two rolls. Two substrates also enter the nip by traveling over each roll. The extrudate is therefore the central part of a sandwich material. The factors –flow, substrate non-uniformity, and specific adhesion control the bonding of the three materials in the resulting sandwich composite.