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What are the reasons for the poor shrinkage of the heat shrink packaging machine?

2021-06-19 09:00:57

What are the reasons for the poor shrinkage of the heat shrink packaging machine?


The working principle of the heat shrink packaging machine is to use the heating method to heat the film outside the product, so that it shrinks tightly on the surface of the outer packaging of the product. However, according to many customers, the heat shrink packaging machine makes it frequent during the shrinking process. When the shrinkage effect is not very good, the sealing is not uniform, the film is damaged, the appearance is stuttered, etc., so what are the reasons for the poor effect of the low-impact heat shrink packaging machine in the shrinking process? The following is for everyone Let me introduce it in detail.


1. The speed is inappropriate. The user’s shrink-wrapped products require different conveying speeds. There is no standard value for this speed for reference. The main reason is that customers need to experiment during use. Generally, after several experiments, it will basically show better The role of it.


2. The heat shrinkable packaging film has punctures. This situation is mainly aimed at the all-inclusive pof film. When the user's product needs are all-inclusive, some small holes must be pierced on the surface of the heat-shrink packaging film, so that the gas in the film can be emitted through the small holes during the heat-shrink packaging. , Otherwise the gas is inside the membrane, and the membrane will bulge up.


3. The quality of the film is too poor. The shrink packaging film applied by the shrink packaging machine meets certain requirements. If the quality of the shrink packaging film is too poor, then the effect of the shrink packaging must be bad, or it will be wrinkled or broken.


4. The temperature is not enough. The operating principle of the automatic heat shrink packaging machine is actually relatively simple, that is, the matching of speed and temperature. When the temperature is low, the appearance of the product will appear wrinkles. And if the temperature is high, it will appear that the film has been scalded. Generally, POF film can be used at a temperature of about 130 degrees, and PE film (PE heat shrink packaging film packaging machine) can generally be used at a temperature of about 170 degrees.


5. The temperature is not enough. The operating principle of the shrink packaging machine is actually relatively simple, that is, the matching of speed and temperature. When the temperature is low, the appearance of the product will appear wrinkles. And if the temperature is high, it will appear that the film has been scalded. Generally, POF film can be used at a temperature of about 130 degrees, and PE film (PE heat shrink packaging film packaging machine) can generally be used at a temperature of about 170 degrees.



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