Aluminum lunch boxes are a kind of kitchenware that is widely used. The thickness of aluminum foil lunch boxes is between 0.04mm-0.20mm, and they can be divided into two types: wrinkled and non-wrinkled. One is made of 8011 aluminum alloy or 3003 aluminum alloy.
Aluminum foil has outstanding insulation properties. Under the premise that the thickness of aluminum foil is sufficient, it can basically completely isolate gas and moisture. Therefore, among the materials of color printing packaging bags, aluminum foil is used as a common insulation material, and aluminum foil has a series of advantages such as toughness, airtightness and good wrapping properties. The main advantages are sanitation, beauty, and heat insulation to a certain extent. The product can be placed on the stove and heated in the microwave without worrying about the risk of blackening. The fourth is that it can withstand high and low temperature tests (20°C to 250°C). The packaging product is molecularly stable and does not change. It can be from the refrigerator to the oven and then to the dining table without changing the utensils, which brings great convenience to everyone. Disposable lunch boxes made of plastic are mainly PP polypropylene and PS polyethylene. PP is softer and is generally used at temperatures between -6°C and 90°C. Because this type of lunch box is not resistant to high temperatures and cannot be dissolved, it is easy to damage the environment. Therefore, it is gradually eliminated by the market.
