A kind of kitchenware that is widely used. The thickness of aluminum foil lunch boxes is generally between 0.04mm-0.20mm, and can be divided into two types: wrinkled and wrinkle-free. Generally, 8011 aluminum alloy or 3003 aluminum alloy is used.
Aluminum is clean and has outstanding insulation properties. Under the premise that the thickness of aluminum foil is sufficient, it can basically completely isolate gas and moisture. Therefore, in color printing packaging materials, aluminum foil is used as a common insulation material, and aluminum foil has a series of advantages such as high quality, airtightness and good wrapping properties. It is mainly hygienic, beautiful, and can also insulate to a certain extent. The product can be directly heated on the gas stove and baked in the microwave without worrying about the risk. Aluminum foil containers are packaging products that can withstand high and low temperature tests (20℃ to 250C) and are stable and unchanged. It can be from the refrigerator to the oven and then to the dining table without changing the container, which brings great convenience to everyone. Disposable lunch boxes made of plastic mainly include PP polysilicon and PS polyethylene. PP is relatively soft. Generally, the application temperature of PP is 6 to 90 degrees. The foam plastic lunch boxes of the previous price range have been eliminated in the market. According to the investigation personnel, the materials of the foam plastic lunch boxes contain harmful substances. When high-temperature and high-fried food is placed in a day, the harmful substances in the foam plastic are easy to precipitate, transfer, and condense on the food, and follow the food into the human body, thereby causing harm to the human body. In addition, the disposable lunch boxes made of foam plastic (0) are insoluble and will not rot for many years. When burned, they will release a lot of harmful substances, causing damage to the environment. Therefore, since 2001, my country has explicitly banned the production, sale and use of foam plastic kitchenware.
Raw material procurement level The original aluminum foil is the medium of the adhesive layer. Its quality has a great impact on the heat sealing strength of the product. On the one hand, the oil stains on the surface of the original aluminum foil will weaken the bonding strength between the adhesive and the original aluminum foil. If the surface of the original aluminum foil is oily and the surface strength is less than 31x10-3un, it is difficult to achieve the ideal heat sealing strength. On the other hand, the metal composition and insufficient surface brightness of the original aluminum foil will affect the strength of the heat seal. The quality control of the original aluminum foil must be strictly controlled.
Adhesive aspect Adhesive is a special chemical substance containing organic solvents. Under certain processing conditions, it is applied to the dark side (high side) of the original aluminum foil, and after a period of chemistry, it forms an adhesive layer, which plays a key role in the thermal conductivity of the product. At present, most Chinese manufacturers use imported raw materials to prepare adhesives. The product can achieve higher thermal strength, but the price of imported raw materials is too expensive. In order to obtain high profits from products, some manufacturers with strong scientific research capabilities have begun to research and develop similar domestic raw materials. The article is provided by: Aluminum Foil Box www,fsweibo.com Wei Foil, the views in this article do not represent the views of this site.
