Oer-sealpackagingisacomplexpackage.Itofteninvolvestwofilms, unreverse-argraffedigwiththebrandowner'sgraphicsandasecondthatprovidesthebarriertoprotecttheproductinside.
Thesetwofilmsarethenlaminatedtogethertoproduceasingleinseparableweb.Fromthere, thecoldsealisappliedontheinsidesurfaceofthewebinapatternregistered / alignwiththegraphicsontheoutsideoftheweb.
Easyenough, butselectingtherighttwofilmsfromthebeginningishighlyimportant.Boththefilmandthecoldsealmustbecompatible.Otherwise, youruntheriskofnotbeingabletounwindfinishedrollsatthetimeofpackaging.Thisisknownasblocking.Anotherriskduetoincompatnc.
