The occurrence of bubbles or delamination in aluminum foil sealing film during sealing is a common quality problem, which not only affects the appearance of the product, but also reduces the sealing performance and threatens the shelf life of the product.

The reasons for the occurrence of bubbles or delamination can be mainly attributed to the following three common situations, and the solutions for each situation have their own focuses:

Firstly, if the bubble problem is caused by bottle mouth contamination, this is the most common situation. The main manifestation is the random distribution of bubbles at the seal, which is often caused by residual water stains, oil stains, or dust at the bottle mouth. The solution is simple, focus on doing a good job of cleaning. It is recommended to carefully wipe each bottle mouth with a dust-free cloth, and if possible, install a small ion fan for dust removal. Operators should pay special attention to wearing clean gloves to avoid contaminating the bottle mouth with grease on their hands.

Secondly, if the is affected by moisture and causes delamination, this situation usually manifests as a large area of weak sealing. The solution mainly starts with material storage. The sealing film should be removed as needed, and unused parts must be sealed and stored. The production environment should be kept dry, and it is recommended to control the relative humidity below 60%. It is best to leave the newly arrived sealing film material in the workshop environment for 2 hours to adapt to temperature and humidity before use.

Thirdly, when encountering problems caused by improper machine parameters, the bubbles in this situation often exhibit a regular distribution. Three key parameters need to be carefully checked: it is recommended to control the temperature at around 180 ℃, and if there are problems, you can try increasing it by 5 ℃; Maintain the pressure at 0.4 MPa to ensure even pressure distribution; The sealing time should be 2 seconds, and can be extended by 0.5 seconds if necessary. Before starting up every day, the machine should be air compressed and preheated 5 times, and 10 products should be randomly inspected every hour during the production process.

Leadmens Packaging is a wholesale and customized manufacturer of aluminum foil sealing film, specializing in the research and development, production of various high barrier packaging materials and easy to tear sealing packaging materials. We can provide one-stop services from consultation, design, sampling, production, testing, after-sales service, etc. If you are interested in or have any questions about us, please feel free to call us for consultation.