The aluminum foil seal on the medicine bottle (also known as the induction sealing gasket or sealing film) is not a simple decoration, it is a "safety guard" that integrates multiple key functions. 

1. Primary function: Sealing and moisture resistance 

Barrier to external environment: The core function of aluminum foil sealing is to provide an excellent barrier of airtightness and water tightness. It can effectively prevent moisture from the air from entering the bottle. 

Protecting drug stability: Many drugs are extremely sensitive to moisture and can decompose, become ineffective, and even produce harmful substances when exposed to moisture. Aluminum foil sealing can ensure that drugs remain dry and chemically stable within their expiration date. 

2. Core function: anti-counterfeiting and tamper proof 

Proof of one-time use: A complete aluminum foil seal is the most intuitive proof that the drug has not been opened or tampered with. Once torn open, it cannot be restored. 

Ensuring medication safety: This is the first hurdle for consumers to judge whether drugs are safe, uncontaminated, or exchanged, which can effectively prevent malicious poisoning or counterfeit products. 

3. Key function: Block gas and avoid light 

Preventing oxidation: In addition to water vapor, oxygen in the air can also oxidize and deteriorate certain active ingredients. Aluminum foil can effectively block oxygen. 

Light protection: Some drugs are prone to decomposition when exposed to light. The aluminum foil layer (especially the surface is often white) has good light shielding properties, providing protection for photosensitive drugs. 

4. Important role: prevent leakage and pollution 

Physical barrier: During transportation and storage, even if the bottle cap is loose, the inner aluminum foil seal can prevent pills, capsules, or powders from leaking out. 

Maintain hygiene: It can prevent pollutants such as dust and microorganisms from entering the bottle through the gaps in the bottle cap, ensuring the hygiene and cleanliness of the medicine. 

Leadtra 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.