What is aluminum foil used for

1. Air conditioning foil. Air-conditioning foil mainly utilizes the characteristics of aluminum foil with low density and good thermal conductivity. In addition, aluminum is easy to process, so it is a good material for heat-conducting fins of air-conditioning heat exchangers. Initially, due to technical reasons, the heat exchange fins in air conditioners only used uncoated aluminum foil in the initial stage. After the aluminum foil was rolled and annealed in the factory, it was used directly to make heat exchange fins without any treatment. The performance was poor. And there are a lot of inconveniences. It was not until later technological innovations that people began to apply coatings. After being coated, or commonly known as wearing a coat, the air-conditioning aluminum foil suddenly possesses various magical powers. For example, once Spider-Man puts on the spider suit, and once Batman puts on the bat suit, he becomes magical. It's vast. This is exactly how air-conditioning foil is applied. Coatings such as anti-corrosion coatings, lubricating coatings, anti-mildew coatings, etc. make ordinary aluminum foil a qualitative leap and solve many problems encountered by air-conditioning foil. Air-conditioning aluminum foil This thing has a very strange characteristic: there is a kind of hydrophilic foil, which is extremely hydrophilic. Once the condensed water touches the surface of the hydrophilic foil, it will spread quickly and there will be no chance to gather together to form water droplets. . There is also a type of foil called hydrophobic foil. Its properties are exactly the opposite of hydrophilic foil. It has a strong repellent effect on condensed water, making it impossible for the condensed water to disperse, causing the condensed water to roll off the aluminum foil. Although this pair of natural "enemies" are completely opposite in nature, they all play the same role. The purpose is to allow the condensed water in the air conditioner to gather and escape quickly or to allow the condensed water to escape and penetrate to prevent condensation. Water occupies the surface of the heat exchanger fins. Due to differences in climate, air quality, etc. in different regions, the conditions for using air conditioners will change greatly. For example, many harsh areas will corrode ordinary aluminum foil. Once the aluminum foil is not protected as it should be, it will Greatly reduce its service life. However, after the surface of the aluminum foil is coated with a corrosion-resistant protective layer, the service life of the air conditioner is improved. Not only that, because the corrosion powder on the aluminum foil heat exchanger has been well suppressed, the ventilation quality in the air conditioner has also been greatly improved, and the air in the air conditioner room has also begun to become cleaner and fresher. Who doesn’t like clean and fresh air? In fact, if anything is stored for a long time, you will worry about the possibility of mildew, and air conditioners are no exception. Moreover, there is a lot of moisture in the air conditioner, so mildew is relatively more likely to occur. In order to prevent the aluminum foil of the air conditioner from getting moldy, avoid having an abnormal musty smell, and continue to ensure the quality of the air coming out of the air conditioner, people came up with a way to coat the aluminum foil with an anti-mildew coating, and so the invention of Mildew-proof aluminum foil heat exchanger. After looking at so many different coated aluminum foil heat exchangers, is there not a heat exchanger that combines all coating functions in one? Don't worry, of course there is. Most air conditioners now use a comprehensive function - hydrophilic foil. It has anti-corrosion and anti-mold functions, and has no odor. It prevents oxidation powder from being blown directly from the air conditioner and affecting human health. , and the condensed water will automatically and evenly distribute on the coating, without causing water droplets to accumulate and affecting the heat exchange and heat dissipation of the air conditioner, which can help increase the heat exchange rate of the air conditioner by 5%.
2. Aluminum foil tape. Can aluminum foil be used as tape? Aluminum foil tape looks similar to the ordinary wide transparent tape that is common in our lives. Aluminum foil tape is mainly used for its shielding performance of electromagnetic signals, because it is widely used in electronic products such as PDAs, laptops, and LCD monitors.
Where electromagnetic shielding is required. Shielding electromagnetic interference not only has a good effect on electronic transmission signals, but also isolates the harm caused by electromagnetic waves to human health. So to put it this way, aluminum foil tape is actually with us all the time, but we can’t see it. Like ordinary transparent glue, aluminum foil tape will deform and become soft and unable to stick to things when it encounters high or low temperatures. So the magical people came up with a way and invented the low-temperature resistant aluminum foil tape. This kind of tape has good weather resistance and is also more resistant to low temperatures. It can still maintain excellent performance in complex climates, especially low temperatures. The quality and shape remain unchanged, and the viscosity and adhesion are maintained first-class. When it comes to low temperatures, the first thing that comes to mind is refrigerators and freezers. By the way, low-temperature resistant aluminum foil tape plays a magical role in fixing the metal pipes of household appliances such as refrigerators and freezers. In addition, it is also suitable for joint pasting of all aluminum foil composite materials, and Water vapor sealing of insulation cotton boards and air ducts, etc. In addition, there is a composite aluminum foil tape with excellent fire retardant capabilities. This kind of tape uses a unique and advanced technology. It is made of aluminum foil mixed with fiberglass cloth and silicone release paper, and then coated with high-performance flame-retardant acrylic adhesive with strong adhesion. It is generally used to seal air conditioners. Engineering air duct system, sealing of thermal insulation, fireproof and thermal insulation nail puncture holes.
3. Carbon-coated aluminum foil In fact, the conductive properties of aluminum are already very good, but the magical people always try their best to do things to the extreme, so carbon-coated aluminum foil was born. ​
Carbon-coated aluminum foil refers to coating nano-conductive graphite and carbon-coated particles evenly and delicately on aluminum foil. Once the aluminum foil wears such a "nano coat", it can collect the microcurrent of active materials and greatly reduce the positive and negative The resistance between the poles maximizes the static conductive performance. In fact, after seeing the word "nano", there is no doubt that carbon-coated aluminum foil is an advanced and breakthrough technological innovation, which makes it easier to preserve battery power, reduces power loss, and significantly improves the overall performance of the battery. .
4. Cable foil. Similar to aluminum foil tape, cable foil mainly utilizes the shielding function and sealing performance of aluminum foil for electromagnetic signals. For cable foil, the general requirements are not very high, as long as there is little oil on the surface and no holes. You only need to coat one or both sides of the aluminum foil with plastic film to use it as a protective cover for the cable. The only high standard and requirement is that the length must strictly comply with the regulations. After the aluminum foil has been continuously cast and rolled, cold rolled, slit and completely annealed, the aluminum foil will be divided into small rolls according to the customer's requirements for the length of the aluminum foil. Such small rolls are then processed at the cable foil compounding factory, where plastic film is added to the aluminum foil, and then divided again, rolled into disks, and supplied to the cable factory.
5. Decorative foil. Aluminum foil can be used as the most common barbecue foil, and can be used as a cold-resistant and corrosion-resistant air-conditioning foil. Now it has transformed into such a high-end decorative foil. Why are decorative foils so beautiful and popular? It is because of the superior coloring properties and high light and heat reflectivity of aluminum foil. Decorative foil is used in many decorative materials such as gift box packaging and building furniture. It is especially widely used in the decoration of inner walls of buildings, indoor furniture and facades. In addition, the color of the aluminum foil is silvery white, giving off an elegant, noble and refined atmosphere. In recent years, aluminum foil craft paintings have gradually become the new favorite for interior decoration. Decorative foils are not only gorgeous in appearance, but also have very good internal performance. It is heat-insulating, moisture-proof, sound-insulating, fire-proof and easy to wash