Laminated films
The selection of laminated multiple films are basically done up to consideration of packaging machine style, packaged goods shape and expectation about lookigns of the product as follow ;
OPP-OPP materials are selected for weight of goods up to 500gr, over that weight OPP-CPP prefered. Over 1000 gr OPP-PE prefered, if handling will be rather than apppearance such as Detergant packages PE-PE much more prefered.
For liquid and alcohol packaging PE-PET combination prefered, PE for iner layer and PET for outher layer as a barrier and high sealing strength.