1, the non-coated aluminum foil

Means a non-coated aluminum foil is rolled annealed aluminum foil surface has not been treated in any form. Our 10 years ago, about 15 years ago, foreign aluminum sheet used for air-conditioning heat exchangers are uncoated aluminum foil. Even now, the film heat exchanger used in developed countries, about 50% is still a non-coating aluminum foil, while in China, the ratio is about 60%.

2, the coating of aluminum foil

The so-called non-coating aluminum foil is aluminum foil surface coating reprocessing, it has some special features. In the technical development of Japan, Germany and other countries faster, use aluminum foil coating has been more than 15 years of history. In China, the use of aluminum foil coating for longer than 10 years.

3, corrosion-resistant aluminum foil

Corrosion-resistant aluminum foil products have a certain corrosion-resistant surface layer of protection, air-conditioning heat piece made with this product is applicable to areas with more severe and can significantly improve the life of air conditioning. At the same time due to the heat transfer sheet to improve corrosion resistance, greatly reducing the generation of surface corrosion powder, thereby improving the quality of ventilation, air-conditioned indoor air purification.

4, the hydrophilic aluminum foil

The hydrophilic surface of aluminum foil having a strong hydrophilicity. Hydrophilic property is good or bad from the perspective of the size of the water adhered to the surface of the aluminum foil is determined after formed, as shown in FIG. a hydrophilic smaller the angle the better the performance, otherwise the worse hydrophilic properties. In general, a angle of less than 35. That belongs to the hydrophilic properties. Hydrophilic aluminum foil is generally used in the air conditioning condenser. Its main function is to make the hot water in the air condenses on the heat sheet is easy to spread out into water while walking down the sheet to the downstream. This prevents water droplets due to heat between the sheets "bypass" and affect ventilation heat exchanger, thereby improving air conditioning heat exchange rate, under the same conditions of cooling capacity can also save energy. Currently, the market in general has a good hydrophilic aluminum foil except hydrophilic surface, but also has high corrosion resistance, so that the air conditioning is more optimized performance.

5, hydrophobic aluminum foil

Also known as a water repellent hydrophobic aluminum foil, aluminum foil and hydrophilic surface properties opposite. I.e., when the condensed water of condensation to the surface of aluminum foil with the aluminum foil formed by the contact angle larger, generally 75. The above. The larger the angle, the better the water repellency. Using the same ultimate goal of hydrophobic and hydrophilic aluminum foil, that no condensate retention between heat exchange fins. The difference is that, by increasing the hydrophobic contact angle of aluminum foil is the condensate and heat transfer sheet, the condensed water drops are formed is easy to slide between the heat transfer sheet is removed to achieve the purpose of the condensed water.

6, self-lubricating foil

Air conditioning heat tablets in manufacture process generally first lubricating its surface, and then punching flanging, the last and then wash away the lubricant trichlorethylene. Because trichlorethylene harmful, so in order to reduce this process produces a corresponding self-lubricating foil. Self-lubricating foil name suggests, is in its punching process does not require a separate add oil, lubricating film of its time by punching aluminum foil surface pre-treatment to bear. Because no special lubricating, therefore eliminating the need for subsequent cleaning and drying process trichlorethylene.

7, mold aluminum foil

Aluminum foil is mainly used for indoor mold part empty withered, and its main function is to prevent the use of heat transfer sheet or place a long time to produce a surface mold, thereby significantly improving the quality of ventilation air withered, and prevent abnormal odor, effective improved air conditioning indoor environment.