MULTI-LAYERED POLYOLEFINE BASED FOIL

摘要

The subject matter of the invention is a multi-layered polyolefine based foil preferably for manufacturing block-bottom end valve sacks and/or block -bottom pillow sacks, as well as a method for manufacturing the said foil.The characteristic features of the foil according to invention are thatits outside layer consists of a mixture of LDPE of 25 to 30% by weight having low melting point and of PP of 70 to 75 % by weight having high melting point,its middle layer consists of a mixture of LLDPE of 40 to 45 % by weight, of PP of 55 to 60 % by weight and a PE based coloring master batch,its inside layer consists of a mixture of LDPE of 24 to 29 % by weight, of PP of 69 to 74 % by weight and a PE based anti-blocking additive.The subject matters of the invention are furthermore the methods of manufacturing the foil by co-extrusion or by casting.