At present, China has a small quantity of tinplate tin cans with aluminum can lids. There are only a few products such as rice pudding, walnuts, and peanuts. It is estimated that in the future, it will increase at a rate of 5% each year. According to the forecast of China Beverage Association, the output of carbonated soft drinks will reach 8 million tons by 2010. If the canning rate is calculated at 20%, the amount of cans will reach 12.4 billion.

Second, the world aluminum cans market progress

The current annual global demand is about 210 billion, accounting for more than half of global metal container production. The proportion of aluminum cans consumed in major regions of the world is 53% in North America, 19% in Europe (including Australia, New Zealand), 14% in South America, and 14% in Asia.

From a global perspective, the global aluminum can market is mainly distributed in developed countries and regions, of which the United States is the most important consumer and production base. Aluminum strip cans and aluminum cans are relatively mature in production. Aluminum cans are used in cans. The annual demand is about 4 million tons, and it keeps increasing steadily with the continuous improvement of people's consumption level and the enhancement of environmental awareness.

The aluminium strip for cans is a big market, and the annual consumption accounts for 1/4 of the global aluminum rolled material consumption. Therefore, the aluminum strips used for cans abroad have been universally produced, and the technical process has also become more mature. The world's leading aluminum companies such as Alcoa, Caesars Aluminium Chemicals, Hydro Aluminium, Aluminum Canada, Cocamco Australia, Japan Light Metals, etc., can produce high quality aluminum alloy cans Strips, now all have achieved international production and operations, and have occupied China's aluminum cans with aluminum strip market. For example, the Alcoa Tennessee Plant mainly produces aluminum cans for aluminum cans, hot rolling SMS five-stand hot rolling, the annual output of about 450,000 tons.

Third, aluminum cans processing technology

Aluminum cans occupy a considerable proportion in beverage packaging containers. The manufacture of cans combines the advanced technologies of many industries such as metallurgy, chemical industry, machinery, electronics, and food, becoming a microcosm of aluminum deep processing. With the ever-increasing competition in the beverage packaging market, for many can-making companies, how to minimize sheet thickness, reduce the quality of single cans, increase material utilization, and reduce production costs in the production of cans is an important part of the company's pursuit. aims.

Due to the complex process of aluminum cans and the demand for raw materials, three-quarters of domestic cans rely on imports, and the raw materials used in domestic cans are all dependent on imports. The two projects consume more than US$1 billion in foreign exchange annually, becoming an importer of cars and color TVs. The fourth largest consumer of foreign exchange after the refrigerator.

Aluminium cans remanufactured aluminum, which consumed 71% less energy and 95% less air pollution than aluminium extracted with alumina. Many countries, especially developed countries, attach great importance to the recycling and utilization of used aluminum cans after use, and the recycling rate has also been increasing.

The recycling technology of discarded cans has developed weakly in China, and huge waste has also been formed. This has led to the huge exchange of cans after a one-time use, immediately declared scrapped, causing huge waste. At the same time, aluminum cans that cannot be recycled have caused huge environmental pollution. The market is calling for economized raw materials that can replace aluminum cans.

At present, the international aluminum price is continuously rising. The output of domestic aluminum cans has far exceeded the demand. Three of China's 25 aluminum can makers have closed down. At present, experiments have proved that once the protection of the cans is lost during the processing, the aluminum alloy in the cans will come into contact with the beverage. Over time, the aluminum will gradually dissolve, especially when the cans are filled with acidic or alkaline beverages. The most harmful. Coupled with aluminum cans polluting the environment, the country has introduced a corresponding policy, clearly stated that it will no longer approve the new aluminum can production line. In this case, steel cans and paper cans emerged as alternatives to aluminum cans.

Wood Craft

2 What are the wooden handicrafts - wine rack

The shelf for placing various drinks can be made of wood. Such a wooden wine shelf is not only beautiful but also very practical. Generally, the drinks to be displayed are very expensive, and many people store them accordingly. The wood used to make the wine rack should consider what kind of wood is best to choose. In fact, the wood used in general is not ordinary, especially in large shopping malls and high-end clubs. The wood for wine racks is very expensive.

3 What are the wooden handicrafts - jewelry box

Most of the boxes used to place jewelry are made of wood, and some gold jewelry is suitable for wooden jewelry boxes. Jewelry is an accessory worn by women. When not wearing it, it is usually placed in a jewelry box. Which jewelry to choose is also taken out from the inside. It is also important to place jewelry. If the material of the jewelry box is not suitable, it will not have a good maintenance effect. The wooden jewelry box is multi-purpose.

4 What are the wooden handicrafts - root carving

Using the root carving method, the self-generated form and distortion behavior of tree roots are used as the artistic creation objects. Through conception and processing, artistic image works such as characters and animals are created. Root carving artworks can be collected, especially the more precious the wood selected, the more valuable the carved artworks. In fact, the root carvings are rarely artificially modified, and the artworks are more natural and beautiful.

5 What are the wooden handicrafts - screen

A screen is a kind of furniture used in traditional Chinese buildings to block the wind. Screens have a long history and are generally displayed in prominent positions in the interior, which can be used to divide, beautify and block. As an inseparable part of Chinese home decoration, it is a good way to present the beauty of nature and tranquility. The screens used in ancient times are made of wood, and there are exquisite pattern carvings on them, which are of great artistic value.

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