... bag is in the bag seal on the zipper and take a zipper cap. 8, PE film is the machine to blow ... that of PE. PVC cling film in fire, black flame, take black smoke, pungent odor, no drop of oil, leaving the ... bag is in the bag seal on the zipper and take a zipper cap. 8, PE film is the machine to ... that of PE. PVC cling film in fire, black flame, take black smoke, pungent odor, no drop of oil, leaving the ...