Realizing the ease of tearing of sealing film is a technical challenge as it requires finding a balance between the conflicting demands of "firm sealing" and "easy opening". 

1. Material selection 

Using a specific formula of heat sealing adhesive to provide sufficient sealing strength while achieving "brittle" or "predictable path" fracture. 

Adjust the thickness and toughness of the support layer (such as PET) and aluminum foil layer. 

2. Structural Design 

Easy to tear design: the most common method. By laser marking, mechanical pre cutting or die cutting, a weakened line is formed on the sealing film. It's like punching perforations in stamps to guide tearing along a predetermined path. 

Tongue pulling design: Provides a "small ear" specifically designed for grasping and exerting force, allowing users to easily initiate tearing movements. 

3. Process control 

Accurately control the temperature, pressure, and time of induction sealing. Excessive sealing can cause the heat sealing adhesive to crosslink excessively, resulting in the film and bottle mouth becoming "dead" and difficult to tear apart; Insufficient sealing can lead to leakage. 

The ease of tearing of the sealing film is crucial. It is no longer an accessory function of packaging, but the first 'physical interaction' between the product and the user. A smooth tearing experience is a silent declaration of product quality and the starting point for building brand favorability. An excellent sealing film design must be carefully crafted for its ease of tearing, just as its sealing performance is valued. 

Leadtra Packaging focuses on the research, development, production, and sales of easy to tear sealing films. Its produced sealing films have good sealing performance, anti-counterfeiting effect, and prevent product content from evaporating and contaminating. The sealing performance can be odorless, and it also has anti-counterfeiting and anti-theft properties. In addition, company advertisements can be printed on the sealing film to achieve promotional effects. If you are interested in or have any questions about us, please feel free to call us for consultation.