How to improve the shrinkage effect of the heat shrink machine?

First, the temperature is not enough. The working principle of the heat shrinking machine is actually relatively simple, that is, the matching of speed and temperature. When the temperature is low, wrinkles appear on the surface of the product. If the temperature is high, the film will be burnt. Generally, a pof film can be used at a temperature of about 130 degrees, and a PE film can generally have a temperature of about 170 degrees.

Second, the size of the furnace is not suitable. The size of the furnace is not suitable in two cases. One is that the furnace is too large, and the other is that the furnace is too small. The situation that the furnace is over the assembly is that the temperature received by the product is relatively small, and most of the heat is three, so it is better to increase the heat shrink packaging machine to a very high temperature to shrink. If the furnace is too small, the film will stick to the inner wall of the furnace and be burnt.

Third, the shrink film has no puncture holes. This situation is mainly for the case of the pof film all-inclusive. When the user's product needs to be fully packaged, the surface of the shrink film must be pierced with some small holes, so that the gas inside the film can be emitted through the small hole during the shrinkage, otherwise the gas is Inside the film, the film will bulge.

Fourth, the speed does not match. The products contracted by the user are different, the length of the furnace is different, the temperature of the furnace is different, and the required conveying speed is also different. There is no standard value for reference at this speed, mainly because the customer needs to carry out the test when using it, generally after several tests. Basically, there will be better results. The longer the furnace, the higher the temperature and the faster the speed, which requires the customer to be determined according to his own needs.

5. The quality of the film is too poor, or the width of the selected film is not suitable. The shrink film applied to the shrinking machine needs to meet certain requirements. If the quality of the shrink film is too bad, the effect of shrinking must be bad, or There are wrinkles, or they will break.