EXTRUSION COATING POLYETHYLENE WITH IMPROVED DRAWDOWN

摘要

Use of an antioxidant being a sterically hindered phenol for increasing the drawdown speed of a low density polyethylene in an extrusion coating process.

主权项

1. Article comprising a substrate and at least one polymer layer, said polymer layer is extrusion coated on the substrate, wherein the polymer layer comprises a composition (Co) comprising a low density polyethylene (LDPE) and a primary antioxidant (PAO), wherein:
the polymer layer and/or the composition (Co) has/have a melt flow rate MFR2 (190° C.) of at least 2.0 g/10 min, and wherein further the melt flow rate MFR2 (190° C.) of the composition (Co) before and after extrusion are1.5≥MFR(after)MFR(before)≥0.5 wherein MFR (after) is the melt flow rate MFR2 (190° C.) of the composition (Co) after extrusion coating; MFR (before) is the melt flow rate MFR2 (190° C.) of the composition (Co) before extrusion coating.