The airline’s meals are prepared by in-flight catering companies at various airports, and delivered to the aircraft cabin on time according to flight needs. For a flight of more than two hours, after the plane enters a smooth take-off, the flight attendant will quickly heat the cooled meal in the electric oven provided with the cabin at 200°C for about 20 minutes, and then there will be a warm-hearted question from the flight attendant: “Chicken rice and Beef noodles, which one do you need?”
Definition of aluminum foil lunch box
“Aluminum foil lunch box” is an aluminum disposable lunch box. It is a brand-new type of catering distribution container. Compared with lunch boxes made of other materials, it has the advantages of light material, high barrier properties, anti-ultraviolet, moisture-proof, and anti-corrosion, and long shelf life. Because aluminum can better maintain the freshness and moisture of food, it is more in line with modern people’s concept of environmental protection and health.
At present, aluminum foil lunch boxes are mostly used for the retail of aviation food, cake food, and the packaging of finished food in the takeaway industry such as roast chicken in supermarkets. In fact, as early as during the APEC meeting in Shanghai, aluminum foil lunch boxes have become the preferred dining utensils for heads of countries. During the 2008 Beijing Olympics, aluminum foil lunch boxes became popular among athletes and service personnel. At the Shanghai World Expo, aluminum foil lunch boxes were widely used in China for the first time. It is understood that during the World Expo, only in the central kitchen of the Expo staff, the daily supply is about 6,000 copies, and the peak is as many as nearly 10,000 copies.
Although the “aluminum foil lunch box” has been well used in the World Expo, the current popularization rate is not high, the propaganda efforts are far from reaching the level it should be, and it is far from being truly integrated into the daily life of ordinary people.
Why are the lunch boxes on the plane all aluminum foil boxes?
Instead of plastic? The major reason is that general plastic products cannot be used for high-temperature heating. For example, plastic products will migrate out of toxic substances when heated. So isn’t ceramics with Chinese characteristics a better choice? Indeed, ceramics can be heated at high temperatures and look elegant and feel good in the hand. The tableware in business class and first class is all kinds of high-grade bone china. However, the cost of all kinds of ceramics is extremely high, and it is impossible to use them once. The cleaning cost is extremely high, and the ceramic utensils are heavy, which will increase aircraft fuel.
As a safe, hygienic and environmentally friendly material, aluminum foil as a packaging material has excellent barrier properties, which can effectively block air, water, and light, thereby maintaining or extending the shelf life and freshness of food. Aviation aluminum foil lunch boxes are generally formed by one-time stamping of 8011 or 3003 alloy aluminum foil through the cooperation of punches and molds. Recycled material. Aluminum foil has excellent heat transfer performance, just to meet the needs of short voyage and fast heating.
Aviation aluminum foil lunch boxes can be classified into two types in terms of appearance and quality: one is a wrinkled lunch box directly punched from light foil, and its thickness is generally 0.06~0.07mm, which is cost-effective; the other is a coating The thickness of aluminum foil lunch box is generally 0.08~0.09mm. The material is at a food-grade resin coating. After high temperature coating, the transparent or white coating is attached to the aluminum foil to isolate the aluminum foil from the air and avoid the oxidation and blackening of the aluminum foil. Therefore, the four major domestic airlines all use such coated aluminum foil boxes.
Promote aluminum foil lunch boxes to deal with white pollution
In China, the “silver box” of “aluminum foil lunch box” is still somewhat unfamiliar to ordinary people, and plastic lunch boxes are commonly used in the market. Relevant data shows that almost 90% of the disposable lunch boxes in the Shanghai market are polystyrene plastic lunch boxes. This kind of plastic lunch box not only brings harm to human health, but also causes great pollution to the environment.
The physical characteristics of plastic lunch boxes have obvious drawbacks in use. When people use disposable foam plastic tableware to hold hot food or boiling water with a temperature of over 65 degrees Celsius, the toxic substances contained in such tableware are easily immersed. food. If the concentration of this harmful substance exceeds the standard, the poison will be even greater. Foreign research results show that the long-term absorption of chemical substances in disposable foam tableware by the human body will cause damage to the liver and kidneys. In addition to causing harm to the human body, this “white pollution” has also caused great damage to the environment. The waste plastic lunch boxes discarded in the environment not only affect the city appearance and natural landscape, but also cause “potential harm” to the ecological environment because of the difficulty of degradation.
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