The lunch box machine is an indispensable equipment for the fast food industry. It provides the outer packaging of fast food. It has the characteristics of convenience, practicality and low cost, and has become a symbol of the fast food catering in the society. Due to the rapid development of society, workers are increasingly choosing fast food as a food in their spare time, and the chain stores of fast food in the city are more and more open. It can be said that the fast food industry is an industry with good market prospects. Here is a look at the development of the fast food industry in the United States.
         The United States is a country with a relatively prominent and typical development of the fast food industry. From the end of the 19th century to the 1950s, the American fast food industry began to develop for half a century, laying a solid foundation for the formation and overall development of the new fast food market, and also for the lunch box machine and the cup making machine. Plastic machinery has laid a solid foundation. Especially in the 1960s, the American economy was a prosperous scene. Service consumption continues to grow, the fast food industry has entered a period of rapid development, and the fast food industry represented by McDonald's has expanded rapidly. From the establishment of the first McDonald's in 1955 to a few years in 1960, the number of McDonald's stores increased to 280. In 1960, it earned $56 million.
         And constantly improve in the production and marketing system. By 1974, the turnover of the US fast food industry had accounted for 14% of the total consumption of foreign food, and in 1984 it increased by 26.5%. Today, McDonald's has established a huge network in more than 100 countries and regions in the world by franchise chain. On average, a new store opens every 8 hours, and has 26,000 chain stores (as of July 2000). With more than 45 million and an annual turnover of more than 30 billion US dollars, it has become the most successful model of the fast food industry in the world.