Heat cut type slitting air knife has design air presure to control heat blade stroke and with special heating blade can do both process, slit and melt material at the same time. It has advantage of small dimension, high heating / cooling efficiency and stable slitting quality. Different form tradition method, MT-A710 not only heating to working temperature within 1~2 minute, but also cooling to room temperature within few minute, substantially to reduce prepare time and can protect operation person not get scald when moving knife holder.