Vacuum bag, is a packaging material designed to seal the package after removing the air inside the package, forming a near-vacuum state encapsulation environment. This packaging technology is mainly through the use of special vacuum packaging machine, after the product is placed in the bag, the air inside the bag is extracted and sealed to achieve the purpose of isolating oxygen, moisture and microorganisms. Vacuum packaging can not only effectively extend the shelf life of food and other perishable products, but also maintain their freshness, flavour and nutritional value, while reducing the volume, easy to store and transport. Vacuum bag has the following features: 

  1. High barrier: vacuum packaging bags are usually made of multi-layer composite materials, such as polyester (PET), nylon (PA), polyethylene (PE), etc. Different combinations of these materials can provide high barrier performance against gases (especially oxygen) and water vapour, effectively preventing the external environment from eroding the products inside.
  2. Freshness Extension: By removing the air inside the bag, it slows down the growth of microorganisms and the rate of chemical reaction in the food, which significantly extends the shelf life of the food.
  3. Moisture-proof and oxidation-proof: under vacuum, the products are not easy to be affected by moisture or oxidation, which is especially suitable for the products that are easy to absorb moisture or need to be oxidation-proof, such as tea, coffee, nuts and so on.
  4. Hygiene and safety: The vacuum packaging process reduces the contact between the product and the outside world, which helps to maintain the hygiene and safety of the product and reduce the risk of contamination.
  5. Convenient for storage and carrying: the items after vacuum packaging are reduced in size, easy to stack and store, saving space, but also convenient for consumers to carry.
  6. Transparent and intuitive: many vacuum packaging bags are made of transparent material, so that consumers can directly observe the internal products and enhance the confidence of purchase.
  7. Wide range of application: suitable for food, medicine, electronic products, chemical products and many other fields.