Aluminum foils nowadays are wildly used in our daily life and different kinds of industry.
- Pharmaceutical packaging aluminum foil
As we talked in the pervious article, medicine Foil Pharmaceutical packaging aluminum foil mainly includes water-based and injection-type easy-open bottle caps and medicinal PTP aluminum foil. Because PTP aluminum foil has the advantages of moisture-proof, easy to carry, safe and hygienic, it is widely used in the international pharmaceutical industry. China has been using aluminum foil to package medicines since 1985. So far, packaging aluminum foil only accounts for 20% of pharmaceutical packaging materials. In recent years, the pharmaceutical foil market has developed rapidly. On the one hand, the pharmaceutical market has developed rapidly, but mainly because 20% of aluminum foil is used in pharmaceutical packaging. The proportion of applications in it is constantly increasing. Aluminum foil rolling mill.
- Flexible packaging aluminum foil (2)
Flexible packaging is a bag-type container made of flexible composite packaging materials. The emergence of flexible packaging has greatly improved the mechanization and automation of the food and beverage industry, and accelerated the modernization and socialization of people’s diet. In developed countries, flexible packaging has become one of the main packaging forms for food and beverages, replacing canned and bottled to a certain extent. In recent years, China’s flexible packaging market has also developed rapidly. So far, 10 aluminum foil composite production lines have been introduced. Different processes such as dry lamination, hot melt lamination, and extrusion lamination can be adopted according to the different uses of flexible packaging. Flexible packaging not only has moisture-proof and fresh-keeping effects, but also can print a variety of patterns and text, is an ideal material for modern commercial packaging. With the improvement of people’s living standards, there is still much room for development of flexible packaging aluminum foil. We are professional foil and aluminum coils/ sheet rolling mill manufactory.
- Composite foils for automobiles (3)
With the rapid development of China’s automobile industry and the continuous increase in the aluminum rate of automobiles, the market demand for automotive foils has rapidly increased. There are two types of automotive foils. One is composite foil for automotive air conditioners. China Automotive air conditioners have been fully aluminized, with an annual demand for aluminum foil of 15,000 tons; the other is composite foils for automotive radiators, which are used to manufacture automotive radiators, condensers and evaporators. It has reached 40% and the annual demand is about 0.3 million tons.
- Aluminum foil for electrolytic capacitors (4)
Aluminum foil used for electrolytic capacitors is an corrosive material that works under polar conditions. It has higher requirements for the structure of aluminum foil. There are three types of aluminum foils used: cathode foils with a thickness of 0.015mm to 0.06. mm; high-pressure foil with a thickness of 0.065mm to 0.1mm, which requires aluminum foil to be produced from high-purity aluminum; low-pressure foil with a thickness of 0.06mm to 0.1mm.较少 There are fewer domestic manufacturers of electrolytic capacitor aluminum foil, mainly due to the small market demand, and the production technology has a large gap with advanced countries. However, aluminum electrolytic capacitors have good performance, low prices, and a wide range of uses, so the market prospects are good. At present, Japan’s annual demand is 45,000 tons, which is 6 times that of the Chinese market. With the development of the electronics industry and China becoming a major industrial production base, the market demand for electrolytic capacitor aluminum foil is promising.
- The aluminum foil for the cable.(5)
The appearance of the cable needs to be wrapped with a layer of aluminum foil to protect and shield it. This aluminum foil is usually made of 1145 grade industrial pure aluminum. After continuous casting, continuous rolling, cold rolling, slitting and complete annealing, the aluminum foil is divided into small coils according to the length required by the user and supplied to the cable foil compounding plant. The film is cut into a number of small strips and rolled into a reel to supply the cable factory. Cable foil is made by attaching special plastic film (0.058mm thick) on the upper and lower surfaces of aluminum foil with thickness of 0.15-0.20mm. There are two kinds of sticking methods: dry sticking and wet sticking. The dry method is to use high temperature (200 ° C) rolling method to stick the film; the wet method is to apply glue. At present, the dry method is mostly adopted. After attaching the plastic film, the film is peeled off the aluminum foil with a special instrument to determine the degree of adhesion of the plastic film. This measurement data is very important and is called peel strength. According to the communication cable industry standard (code YD / T 723.2-94), the strength should not be less than 6.13N / cm; in addition, the heat seal strength should not be less than 17.5N / cm. The surface quality of aluminum foil is the main factor affecting peel strength. The main surface quality problems are oil stains, corrosion, and peroxide.
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