Today, we will continue to introduce the function of sealing film. 

The effectiveness of aluminum foil sealing film comes from its exquisite design and mature process: 

Material structure: It is composed of multiple layers of composite materials, with the core including an aluminum foil barrier layer and a heat sealing layer. 

Sealing process: On an automated production line, after the bottle cap is screwed on (when the cap is loose), it will pass through a high-frequency electromagnetic field (induction sealing machine). The aluminum foil layer in the field will instantly generate heat, melt the heat sealing adhesive at the bottom, and firmly adhere to the bottle mouth, forming a highly airtight seal after cooling. 

This sealing strength is very high, and it is difficult to completely tear it off with bare hands. It must be destroyed to remove the contents, thus perfectly achieving anti-counterfeiting function. 

In short, aluminum foil sealing film is really useful, it is a seemingly simple but indispensable component. Although it is not expensive, it is the first and most important line of defense for safeguarding product integrity, safety, effectiveness, and hygiene. Whether it's medicine bottles, milk powder cans, or high-end food packaging, the sound of "stabbing" when the film is torn open is a reliable proof of safety and quality. 

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.