... film blowing machine in Ruian 1.three squeezing machine. 2.rotary die head Use: Thermal shrinkage film for packing ( applying to box-packing products, such as packing ... axial oriented nylon film, BOPA and polyester film BOPET, thermal seal film, protective film, thermal shrinkage film and annealed soft film, single layer, thermal shrinkage film and etc ...