Aluminum foil bags are made of pure metal aluminum sheets, and the thinnest thickness can reach 0.0065mm. Although they are so thin and seem weak, they are very effective after being combined with plastic. After being compounded with more than one layer of plastic, the barrier properties, sealing properties, fragrance retention properties, shielding properties and other functions of the plastic can be improved.
Aluminized bags are made by evenly coating high-purity metal aluminum on a plastic film under high temperature and vacuum conditions. Because it is coated on plastic, the metal aluminum mainly plays a decorative role and does not contribute much to improving the barrier properties of the material. .
