... Film Blowing Machine : 3 layers co-extrusion stacking-type blown die, dual-lip cooling ring, IBC, bubble FFS Film Blowing Machine is used ... The products are erect, beautiful, high-strength, convenient for stacking, and preventing from slide-down. Especially they are convenient for ... of new technique and technology such as three-layer-coextrusion stacking-type blown die, dual-lip cooling ring, IBC, ...