... . Usually there are the following structures like PET/PE, PET/FOIL/PE , PET/NY/PE, NY/PY, PET/VMPET/PE , OPP/CPP .....The stand ... ,food,liquid ,garment ect.With tear notch and zipper, the bag can be opened easily.The bags can be printed up ... colors 2 sides. and can be printed edge to edge . pet food bag