Bad seal? Recommendations from packaging foil manufacturers for the production of foil packaging bags

As we all know, for packaging aluminum foil bags, poor sealing is a serious quality problem, which affects the quality and use of packaging foil. And as experienced manufacturer and supplier of packaging aluminum foils, Haomei is going to give some advice to you on this question.

Poor sealing can be divided into incomplete heat sealing, brittle sealing, and warping of hot air after sealing. If the heat sealing is not complete when processing and packaging aluminum foil, leakage or deterioration will be caused mainly due to the insufficient anti-pollution heat sealing performance of the composite film during the production process, so packaging aluminum foil made of film substrate with good anti-pollution heat sealing performance can be used. And when the seal of the aluminum foil bag becomes brittle or even brittle, what is the cause? The adhesive penetrates into the film of the packaging aluminum foil, resulting in a decrease in its toughness and an increase in brittleness, etc. All possible factors that cause the finished seal to become fragile. As long as the heat-sealing temperature and time are adjusted according to the heat-sealing characteristics of the packaging aluminum foil material, the state of the heat-sealing equipment is guaranteed, and attention is paid to the problem of adhesive penetration during composite curing, this problem can be avoided in the finished product. In addition, when producing and packaging aluminum foil bags, the phenomenon of bag warping after heat sealing is mainly due to uneven thickness of the composite film, too high heat sealing temperature or too long time, insufficient cooling after heat sealing, insufficient maturation time, and heat resistance of the film substrate. The main reason is poor performance. Therefore, aluminum foil packaging bag manufacturers must choose packaging aluminum foil made of film substrate with good heat resistance, control the temperature and time of heat sealing according to the properties of the selected material, and adjust the tension of the floating roller before heat sealing to ensure complete curing and cooling.

All the above-mentioned is the basic introduction of recommendations from packaging foil manufacturers for the production of foil packaging bags. Thank you for your patience in reading! For more details, please refer to “packaging aluminum foil”. Should you be interested in buying aluminum product, please contact us at:

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