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What is the reason for the broken bag at the seal of the food packaging bag-副本

Date:23-12-2022

1. The reason for the packaging material

The peel strength of the composite film used in food packaging bags is poor, that is, the composite fastness between the single-layer films in the composite film is poor, and the composite film is prone to delamination. When the content is impacted or squeezed by external force, the composite film is prone to delamination at the heat seal, resulting in air leakage and rupture near the heat seal of the package. It can be verified by burst pressure (positive pressure method) and peel strength test.

2. Various hidden dangers in the production process

If the parameters of the heat-sealing equipment are not set properly, it will easily lead to poor heat-sealing quality, poor heat-sealing (that is, the heat-sealing is not tight and easy to separate) or excessive heat-sealing (that is, the heat-sealing strength is too large, and the root of the heat-sealing Fracture) phenomenon, easy to cause air leakage and rupture of the heat seal. It can be verified by sealing performance (negative pressure method) and heat sealing strength.

Due to the particularity of food packaging bags, in the production of food packaging bags, no matter the process, material, material thickness or heat sealing method, they will be treated specially. In the finished product inspection of packaging bags, we usually have a strict inspection process for the strength and sealing of materials to ensure that food packaging bags have a good output.

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