What should I do if the edge of the heat shrink film is not firmly sealed?

One of the important reasons is that the heat shrink film is easy to break due to poor edge sealing. So how to solve the problem of poor edge sealing? Let me tell you!

First of all, it is necessary to deal with it from the source, and the edge distance of the heat seal should be sufficient. If the distance of the heat seal is close to the edge just to save size,heat shrink film inevitable that there will be places where it cannot be sealed.

Secondly, it is necessary to control the heating time of the heat seal. If you heat it for too long, it will burn the film. If the heating is not enough, it is easy to seal the edges. Therefore, we have to set a standard for a time according to the thickness of the heat shrink film.

Third, in the production process of heat shrinkable film, the quality inspection department should take samples and test, if it is unqualified, it needs to be adjusted to ensure that the heat shrink film sent to the customer is a qualified product.

The application of packaging film is becoming more and more extensive, and the application of heat shrink film is a new example.