The external valve port of the paper package has the following roles and functions in the entire package:
1. Sealing performance: The External valve port of the paper packaging can seal the packaging and prevent the contents or liquids in the packaging from leaking or overflowing. It is usually designed as a sealable structure to ensure the integrity and safety of the packaging.
2. Easy to open: External valve port is usually designed to be an easy-to-open structure to facilitate consumers to open the package and take out the product. This provides a better user experience and makes the package easier to use.
3. Control flow: The packaging of many liquid or powder products requires flow control to prevent excessive flow out or difficulty in use. The external valve port of the paper packaging can have flow control or adjustment functions, allowing users to better control the flow rate and amount of product.
4. Prevent contamination: The External valve port can prevent the products in the package from being contaminated by the outside world. Through the sealing performance and appropriate design of the valve port, air, dust, bacteria or other contaminants can be effectively prevented from entering the interior of the package, ensuring product quality and hygiene.
5. Preservation and storage: For some products that need to be kept fresh and stored for a long time, the external valve port of the paper packaging can provide sealing performance to prevent air and moisture from entering the inside of the package, extending the freshness period and shelf life of the product.
In short, the external valve port of paper packaging plays an important role in the entire packaging, such as sealing, controlling flow, facilitating opening, preventing contamination, and preserving freshness and storage. A well-designed external valve port can improve the functionality and user experience of the packaging and protect the quality and integrity of the product.
