Shrink machine can be divided into two kinds,PE and POF shrink machine,only PE shrink machine can sleeve effect,in actual,product more big,sleeve effect becomes worse,how to solve?
  1, Not enough temperature. Each of film has its adaptative temperature,so suitable temperature is major factor.
  2, speed. The temperature is reached, then adjust the speed, if the speed is too fast, the film did not shrink, too slow, there will be film is hot situation, so the speed of matching, is another major factor.
  3, direction of wind. Wind direction determines product surface heating position, especially for sleeve packing.