Vacuum bags are usually used for packaging in food, medicine, cosmetics and other industries, and can effectively extend the shelf life of products. To achieve the predetermined vacuum level, the following measures need to be taken:
1. Choose the appropriate packaging bag: Packaging bags of different thicknesses and materials have different vacuum requirements. You must choose the appropriate packaging bag according to specific needs.
2. Use vacuum packaging machine: Vacuum packaging machine is the key equipment to achieve the vacuum degree of vacuum bag. You need to choose professional equipment that meets your needs and operate it correctly according to the equipment instructions.
3. Oxygen absorption treatment: Before vacuum sealing, part of the air in the bag can be extracted and then nitrogen or other inert gases can be injected to prevent oxygen in the packaging material from affecting product quality.
4. Check the sealing quality: Make sure the packaging bag is sealed well and does not leak, so as to ensure the stability of the packaging vacuum.
5. Storage environment: During storage and transportation, vacuum bags should avoid being exposed to sunlight, high temperature, and humid environments for a long time, so as not to affect the stability of the vacuum degree.