In order to prevent food from oxidation and deterioration, food packaging bags often use aluminum foil materials. Aluminum reacts with oxygen to form a dense protective film of aluminum oxide, which can prevent oxygen from continuing to oxidize aluminum. Aluminum foil packaging bags use this protective film to isolate outside air from entering the inside of the bag, thereby preventing food from oxidation and deterioration. Aluminum foil also has the characteristics of good ductility, good barrier properties, strong corrosion resistance, and good printing adaptability.
Aluminum foil is used in food packaging bags because of its good barrier properties. The oxygen transmittance of aluminum foil is extremely low, which can effectively block gases in the air that can easily cause food to deteriorate, such as oxygen. And aluminum foil is opaque and has good light-shielding properties, preventing certain foods from discoloration or deterioration due to exposure to light. Aluminum foil itself has extremely poor corrosion resistance and is easily corroded by acidic or alkaline substances.
The raw materials of aluminum foil for food packaging are mainly 1 series, 3 series and 8 series products, mainly including models 1060, 1100, 3003, 8011, 8021, etc. The softness and hardness of the alloy, that is, the alloy state, are selected according to the needs of the packaged products. The three commonly used states are H14, H16 and H18. Aluminum foil packaging is lightweight, flexible and easily recyclable, keeping food fresh for longer and providing protection from light, UV radiation, grease, water vapor, oxygen and microorganisms.
Aluminum foil packaged foods on the market are generally reheatable and storage-resistant. Most of the aluminum foil used in food processing has a bright side and a gray dull side. Aluminum foil paper for food can be used to wrap food on both sides. It is usually recommended to wrap food on the glossy side to improve the heat conduction effect.
MC Aluminum is an aluminum foil manufacturer. The aluminum foil base material produced for food packaging is food grade, clean in oil removal, has good product shape, and does not deform when cut. The product models are complete and can be customized according to customer needs. Sample mailing services are provided and exported overseas. After-sales service is guaranteed. Users can order with confidence and look forward to your contact.