Aluminum foil

Aluminum foil, due to its excellent properties, is widely used in food, beverages, cigarettes, pharmaceuticals, photographic substrates, household items, etc., and is usually used as its packaging material; Electrolytic capacitor materials; Insulation materials for buildings, vehicles, ships, houses, etc; It can also be used as decorative gold and silver thread, wallpaper, as well as decoration trademarks for various stationery printing products and light industrial products. Among the various uses mentioned above, the most effective way to utilize the performance of aluminum foil is as a packaging material. Aluminum foil is a soft metal film that not only has the advantages of moisture-proof, airtight, light blocking, wear-resistant, fragrant, non-toxic and odorless, but also is more favored by people because of its elegant silver white luster, making it easy to process beautiful patterns and patterns of various colors. Especially after the composite of aluminum foil with plastic and paper, the shielding properties of aluminum foil are integrated with the strength of paper and the thermal sealing properties of plastic, further improving the necessary shielding properties for water vapor, air, ultraviolet radiation, bacteria, etc. as packaging materials, greatly expanding the application market of aluminum foil. Due to the complete isolation of the packaged items from external light, moisture, air, etc., the packaging is well protected.

1、 Selection of aluminum foil material

When selecting aluminum foil for transformers, the material of the aluminum foil is an important consideration. Generally speaking, the material of aluminum foil should be high purity, moderate hardness, corrosion resistance, and good conductivity. For example, common aluminum foil materials include A1050, A1060, A1070, etc. These materials have a purity of over 99%, and also have high corrosion resistance and conductivity, making them a suitable choice for transformer aluminum foil materials.

2、 Selection of aluminum foil size

When selecting transformer aluminum foil, the size of the aluminum foil is also one of the factors that needs to be considered. Generally speaking, the size of aluminum foil should match the number of turns and size of the transformer. If the size of the aluminum foil is too small, it is easy to increase the loss of the transformer; If the size of the aluminum foil is too large, it may cause the volume of the transformer to increase, resulting in an increase in production costs.