In the selection of high temperature cooking bag, the first material is aluminum foil material. Then why can aluminum foil bag be used as high temperature cooking bag? This article to analyze the characteristics of aluminum foil bag for high temperature cooking bag.

The aluminum foil bag has good sealing performance and strong barrier property. The number of pinholes in aluminum foil should be less. But if it has a pinhole, its barrier will be greatly reduced, gas and light will quickly and directly penetrate, and the content will soon degenerate. Generally speaking, the thicker the aluminum foil is, the less the number of pinholes. For example, for 7 μ m thick aluminum foil, the number of pinholes should be less than 200 holes / m2; for 9 μ m thick aluminum foil, the number of pinholes should be less than 100 holes / m2. No matter how thick the aluminum foil is, the pore size of the pinhole should not be greater than 20 μ M.

2、 Aluminum foil bag food safety level, the appearance of high cleanliness, no oil and dust, the appearance of high tension, should reach more than 72 Mn / m. A simple way is to check with distilled water, which should be fully moistened on the surface of aluminum foil. If the surface of the aluminum foil is seriously greasy, it will affect the composite fastness of the aluminum foil and other materials, especially after the packaging bag is cooked at high temperature, the phenomenon of delamination and peeling will occur.

3、 Aluminum foil material is soft, easy to crack, and has good resistance. The purchased aluminum foil should be kept in a dry state, and should not be placed for too long. It should be used as soon as possible to avoid moisture absorption and oxidation of aluminum foil.

Aluminum foil is a kind of metal. Soft aluminum foil with thickness of 9 μ m (or 7 μ m) is selected in cooking bags. It has excellent moisture resistance, gas resistance and light resistance. If there is no mechanical damage and pinholes, it is completely impermeable to moisture, air and light, and has extremely high heat resistance and oil resistance. Therefore, the composite packaging bag containing aluminum foil has full sealing, high fragrance retention and high light resistance Oil resistant and high temperature resistant.

Aluminum foil bag manufacturers choose hwadee packaging. The company specializes in the production of infant and child feeding bags, food, daily chemical suction mouth bags, self-supporting valve bags, bags in boxes, food packaging bags, special water bags and other packaging series.