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Home Uncategorized After PE shrinkable film passes the shrinkable machine, the shrinkable effect is not good, and the packaging is very loose. What’s the matter?

After PE shrinkable film passes the shrinkable machine, the shrinkable effect is not good, and the packaging is very loose. What’s the matter?

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reasons for poor shrinkage effect of PE shrinkage film:

the quality of the film is too poor. The shrink film applicable to the heat shrinkable packaging machine needs to meet certain requirements. If the quality of the shrink film is too poor, the effect of shrinkage must be bad, either wrinkled or broken

improper furnace channel size. There are two situations when the furnace path size of the heat shrinkable packaging machine is inappropriate. One is that the furnace path is too large, and the other is naturally that the furnace path is too small. The situation of the furnace pass is that the product receives less temperature and most of the heat is three. Therefore, the heat shrinkable packaging machine needs to be increased to a very high temperature to shrink better. If the furnace channel is too small, the film will stick to the inner wall of the furnace channel and be burned

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the temperature is not enough. The working principle of heat shrinkable packaging machine is actually relatively simple, that is, the matching between speed and temperature. When the temperature is low, wrinkles will appear on the product surface. If the temperature is high, the film will be scalded. From experience, the temperature of about 130 degrees can be used for general POF film, while the temperature of about 170 degrees can be used for PE film, which is more appropriate

speed mismatch. This is a standard value that can be used by the customer several times after the test. It can be used as a reference when there is no basic shrinkage effect required by the customer

The shrink film of the shrink machine has no puncture. This situation is mainly aimed at the situation that the POF film is fully wrapped. When the user’s product needs to be fully wrapped, some small holes must be pierced on the surface of the shrink film, so that the gas in the film can be emitted through the small holes during shrinkage, otherwise the gas is in the film, and the film will bulge

after passing through the shrinking machine, the PE shrink film has poor shrinkage effect and the package is very loose because of insufficient cooling time. It should be stored in a cool place
the shrinking machine uses the shrinking film to wrap the product or package. After heating, the shrinking film shrinks and wraps the product or package tightly, which fully shows the appearance of the article, improves the product’s merchantability, and increases the beauty and sense of value. The articles packaged by the heat shrinkable machine can be sealed, moisture-proof and pollution-proof,

according to your description, our packaging style is like that of bottled purified water (12 bottles in a group). The size of the outer PE packaging is always fixed. This time, we found that the shrinkage effect is very poor. After the temperature in the furnace is adjusted to 185, the shrinkage effect is still poor. We checked the temperature in the furnace with an infrared thermometer. The result is that the temperature in the furnace is consistent with the digital display result, and the pushing speed is reduced, The effect is better,) analysis; Check the temperature in the furnace cavity. Maybe a group of heating tubes in the middle are burned (or the power is reduced). Personally, I think there will be some error when checking the temperature in the furnace with infrared thermometer; You should check the current of each group of heating tubes with a clamp ammeter to see if it is normal.

it means that the temperature is not enough or the speed of the conveyor belt is too fast. You can try to increase the temperature of the conveyor belt or increase the temperature

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