... 3.inverter motor and hard tooth reduction this machine can blowing and priting plastic film at sametime with prniting ... Screw: pole φ45, L/D: 28:1 2. Blowing and printing width 100~350(mm), printing width: 420mm 3 ... line machines: a. Bright color, strong fastness; b. Blowing and printing at the same time, exact overprint; c. ... AND EQUIPMENT CO.,LTD extrusion film printing and blowing machine (vest bags)