Aluminum foil is a soft metal film, not only has the advantages of moisture-proof, air-tight, light shading, abrasion resistance, fragrance protection, non-toxic and tasteless, but also because of its elegant silver luster, easy to process a variety of colors of beautiful patterns and patterns, so it is easier to be favored by people. Especially combined with plastic and paper, the shielding property of aluminum foil is integrated with the strength of paper and the thermal sealing property of plastic, which further improves the shielding property of water vapor, air, ultraviolet and bacteria necessary for packaging materials and greatly broadens the application market of aluminum foil. Due to the packaging of the goods and the outside light, humidity, gas, etc.