ঠান্ডা sealpackagingisacomplexpackage.Itofteninvolvestwofilms, onereverse-printedwiththebrandowner'sgraphicsandasecondthatprovidesthebarriertoprotecttheproductinside।
Thesetwofilmsarethenlaminatedtogethertoproduceasingleinseparableweb.Fromthere, thecoldsealisappliedontheinsidesurfaceofthewebinapatternregistered / alignedwiththegraphicsontheoutsideoftheweb।
Easyenough, butselectingtherighttwofilmsfromthebeginningishighlyimportant.Boththefilmandthecoldsealmustbecompatible.Otherwise, youruntheriskofnotbeingabletounwindfinishedrollsatthetimeofpackaging.Thisisknownasblocking.Anotherriskduetoincompatibilitybetweencoldsealandfilmispoorpackageseals-orevennoseals।
