... 3 model design;PLC control;PC interface touching screen;standard roller size 28mm;max temp 800 C Hot air seam sealing machine ... -PU, rain coats, snow-suits, tents,waterproof coverings' sealing...Hot air seam sealing machine ==Features==1, LCD screen, steady operation, reliable ... so that to make quality more reliable.3,Automatic temperature control,simpler operation.4, The cylinder of upper roller is ...