... )material structure:Two layers labels: PT/PE, kraft paper/aluminum foil, kraft paper/PE, PET/PE, PVC/PE, NY/PVDC, PE/PVDC ,PP/PVDC etc.Three layer ... /PE/BOPP/PE,PVDC/PT/PVDC/PE,kraft paper/alunimun foil/ kraft paper/PEFilve layers labels: PVDC/PT/PE/AL/PE Six layers labels: PE/kraft paper/PE/AL/PE/PE etc ...