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The foil aluminum bags company will explain to you what is the reason for the low heat sealing strength of foil aluminum bags?

The foil aluminum bags company will explain to you what is the reason for the low heat sealing strength of foil aluminum bags?

(Summary description)Foil aluminum bags are widely used in packaging bags. There will be some problems in the production process of foil aluminum bags. The following editor will briefly introduce the reasons for the low heat sealing strength of foil aluminum bags:

The foil aluminum bags company will explain to you what is the reason for the low heat sealing strength of foil aluminum bags?

(Summary description)Foil aluminum bags are widely used in packaging bags. There will be some problems in the production process of foil aluminum bags. The following editor will briefly introduce the reasons for the low heat sealing strength of foil aluminum bags:

Information

Foil aluminum bags are widely used in packaging bags. There will be some problems in the production process of foil aluminum bags. The following editor will briefly introduce the reasons for the low heat sealing strength of foil aluminum bags:

foil aluminum bags

1. Influence of cooling process on heat seal strength

The cooling process of the foil aluminum bags is to ink jet printing under a certain pressure, and use a lower temperature to shape the welded seam just after melting and heat sealing. Insufficient heat sealing pressure, poor cooling water circulation, insufficient water circulation, too high water temperature or untimely cooling will cause poor cooling, which will reduce the heat sealing strength and affect the appearance of the weld.

2. Influence of interlayer peeling on heat seal strength

With the same structure and thickness of the composite film, the higher the interlayer peeling degree of the composite film, the higher the government policy and supervision, the greater the heat sealing strength of the foil aluminum bags.

For products with low interlaminar peel strength, interlaminar peeling of the composite film at the weld often occurs, resulting in a greatly reduced heat seal strength of the weld. This is because the inner heat seal layer independently bears the tensile force of damage, and the surface layer material loses compensation. Due to the strong effect of printing education, if the interlayer peeling strength of the composite film is high, the interlayer peeling phenomenon will not occur at the weld, and the actual heat sealing strength will be much larger.

3. The influence of the contents of the composite bag on the heat sealing strength

The packaging contents of some foil aluminum bags are powdery substances, which are easy to contaminate the seal when entering and discharging. The sealing performance is not very good. At this time, it is necessary to replace the inner layer material or increase the thickness of the inner layer material to improve the heat sealing strength.

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