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Causes of wrinkling at the sealing edge of foil aluminum bags

Causes of wrinkling at the sealing edge of foil aluminum bags

(Summary description)Whether it is used for food packaging or electronic product packaging, pharmaceutical product packaging or cosmetic packaging, foil aluminum bags are welcomed by products in all walks of life because of their material characteristics.

Causes of wrinkling at the sealing edge of foil aluminum bags

(Summary description)Whether it is used for food packaging or electronic product packaging, pharmaceutical product packaging or cosmetic packaging, foil aluminum bags are welcomed by products in all walks of life because of their material characteristics.

Information

Whether it is used for food packaging or electronic product packaging, pharmaceutical product packaging or cosmetic packaging, foil aluminum bags are welcomed by products in all walks of life because of their material characteristics. Of course, there will always be various problems. The most common one is the edge sealing problem, which is mainly manifested in the following two aspects: the temperature of the hot knife during edge sealing is too high, and the edge is wrinkled; the temperature of the hot knife is too low during edge sealing. , the edge sealing is unsuccessful.

foil aluminum bags

So what are the reasons for the formation of these two problems of foil aluminum bags sealing? The causes of edge sealing wrinkling may be the following aspects: Too much residual solvent in glue and ink, accumulation and transpiration during the sealing process, resulting in bubble wrinkling; The hardness and flatness do not meet the requirements of heat sealing, and there are foreign objects on the heat sealing knife.

The material used is not temperature-resistant, and the material will wrinkle after high temperature sealing; the glue is not resistant to high temperature; if the heat sealing time is too long, it will also cause wrinkling. The reason for the unsuccessful edge sealing of the foil aluminum bags may be that the temperature of the heat sealing knife is too low or the pressure is too small; the quality of the heat sealing material is caused by the quality of the heat sealing material, the sealing temperature is too high, or the heat sealing function is unstable. These aspects will cause the aluminum foil bag to fail to seal the edge, so you need to pay attention when debugging.

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