In the previous two articles on Leadtra Packaging, we talked about "the sealing film cannot stick or seal firmly" and "the sealing film is overheated or burnt". Today, let's take a look at problem three - poor tear resistance or inability to tear the sealing film. 

Phenomenon: It requires great force to tear open, or the film material breaks or delaminates during tearing, making it impossible to remove completely. 

Possible reasons: 

Excessive sealing: Excessive power and time can cause the heat sealing adhesive to crosslink excessively and become stuck with the bottle mouth. 

Membrane structure issue: The composite strength between the surface layer (support layer) and the intermediate layer (aluminum foil) of the sealing film is insufficient, resulting in "delamination tearing". 

No easily tearable opening or poorly designed easily tearable opening: There is no easily tearable opening design (such as tongue pulling, marking), or the depth of the easily tearable opening is not sufficient. 

Solution: 

Optimize sealing parameters to avoid excessive heating. 

Feedback to the supplier requesting products with higher composite strength. 

Choose a sealing film with an easy to tear design. 

Leadtra Packaging focuses on the research and development of aluminum foil sealing film. Its sealing film has an exquisite appearance, bright colors, tight sealing, and easy to tear effect. If you are interested in or have any questions about us, please feel free to call us for consultation.