Coated Aluminum Coil
Coated aluminum coil refers to the coloring treatment of the surface of aluminum alloy. Coated aluminum coil has become one of the most popular top-level decorative materials. It is green with environmental protection, durability, and beautiful characteristics. As a decorative material, it has the following incomparable advantages over other products: uniform color, bright and clean, strong adhesion, strong and durable, acid and alkali resistance, corrosion resistance, weathering resistance, decay resistance, friction resistance, UV resistance, and strong weather resistance.
Advantages of Coated Aluminum Coil
Material with exceptional aesthetic versatility
Coated aluminum coils are a triumph of technology and design, offering architects and designers a vast spectrum of colors to work with. The range is not limited to traditional hues; it extends to metallic finishes, bold shades, and subtle pastels.
Sustainability and environmental benefits
In an era where sustainability is a paramount concern, coated aluminum coils are considered an environmentally friendly choice due to their high recyclability and low energy consumption during manufacturing. The coating process is designed to minimize volatile organic compound (VOC) emissions, contributing to improved indoor air quality.
Enhanced durability
One of the primary reasons why coated aluminum coils are favored in the construction industry is their ability to enhance building durability. The protective layer acts as a shield, safeguarding the aluminum sheet from external factors such as UV radiation, corrosion, humidity, and temperature fluctuations. This protective layer not only prevents the aluminum from deteriorating but also prolongs the lifespan of the entire building structure.
Corrosion resistance
One of the biggest threats to the durability of buildings is corrosion. When exposed to moisture and oxygen over extended periods, metals like aluminum tend to corrode, which weakens the structure of the building. However, coated aluminum coils provide excellent corrosion resistance. The protective layer on the surface acts as a barrier, preventing moisture and air from directly contacting the metal, thus significantly reducing the chances of corrosion.
Our Product
Our company is specialized in the production of mill finished aluminum coils & sheets, color coated/ embossed/corrugated aluminum coils & sheets, aluminum foil, aluminum circle, solid aluminum sheets, CTP plate stock, PS plate stock, deep-draw stock, alloy sheet and plate.
Product Application
Shijie supplied aluminum products are widely applied in industries including automobile making, packaging and containers, buildings and decorations, electrical and electronic, transportation & vehicles, home appliance and furniture, and food and medical care, shipbuilding, printing, etc.
Production Equipment
Slanting casting line,Tension leveling line, Quenching line, Levelling Machines, Cold Mill, Double face milling machine, roller coating line, cross-cutting Machine, slitting Machine, embossing line.
Production Market
By virtue of the best product quality and perfect overseas services, Shijie's aluminum products have been exported to United States, United Kingdom, Italy, Russia, Brazil, Peru, Argentina, India, Iran, Pakistan, Indonesia, South Africa, Côte d'Ivoire, Singapore, Tanzania, Canada, the Middle East and other countries and regions in the world, and won the award of Chongqing International E-commerce Demonstration Enterprises.
Coating classification of Coated Aluminum Coil
PVDF coated aluminum coil
PVDF coating, as the most protective fluorocarbon coating globally recognized, has very good corrosion resistance and color retention. In addition to chemical resistance, it has outstanding UV resistance and heat resistance, which can ensure that the color will not be damaged for 30 years and will always keep beautiful colors. It is mainly used for high-grade buildings or buildings in harsh environments, especially in chemical industry, metallurgy and other industries, as well as coastal humid areas, high UV areas and areas with serious pollution and corrosion.
HDP coated aluminum coil
This kind of coating has the advantage of good aging resistance and corrosion resistance. And its acid resistance is very good, which is 5-6 times of that of ordinary paint coated plate. When polyester resin is changed into hydrophilic polyester with strong antifouling property, the coating surface has strong self-cleaning and pollution resistance properties. The weathering life is more than 15 years.
It is applicable to chemical industry, metallurgy, electric power, coastal areas, plateau and other areas with high requirements for UV resistance and corrosion resistance, as well as building interior and exterior panels with special requirements for anti pollution.
PE coated aluminum coil
PE coating has good adhesion to the material, its price is lower than PVDF, and its color and luster selectivity is large, so it has a large amount of usage. In general outdoor environment, the basic corrosion resistance can reach 7-8 years. It is generally used in areas where air pollution is not serious or products that need to be processed for many times. Such as ordinary industrial plants, warehousing and logistics warehouses, traffic signs and other materials.
Coated aluminium coil is a popular material used in modern buildings and decoration projects. Its unique surface color and texture not only enhance the aesthetics of the building, but also provide excellent weather resistance and durability. However, in order to maintain the beauty and quality of its surface, proper protection measures should be taken.
The first step in protecting the coated aluminium coil surface is to clean it regularly. Dust, dirt, and other debris can accumulate on the surface over time, which may cause scratches or accelerate the aging process of the coating. The best way to clean the coil is to use a soft, non-abrasive cloth or sponge, dampened with water or a mild cleaning detergent. Avoid using abrasive cleaners, solvents or other harsh chemicals, as they may damage the surface.
In addition to cleaning, it is also important to avoid exposing the coated aluminium coil to harsh environmental conditions. Extreme temperatures, excessive moisture, direct sunlight and other factors can cause fading, peeling or other damage to the surface. Therefore, it is recommended to install the coil in a place where it can be sheltered from direct sunlight and rain. If necessary, use a protective cover or awning to shield the coil from harsh weather conditions.
Another way to protect the surface of the coil is to apply a protective coating. A clear, protective sealer can be applied to the surface, which can help to preserve the color and texture of the coil. This type of coating is usually easy to apply and can be reapplied periodically to maintain its protective qualities. A professional installer can help to apply the protective coating, which can be a great way to ensure the longevity of your coil.
Routine maintenance can go a long way in protecting the surface of your coated aluminium coil. Regular inspections can help to identify any potential problems, such as chips or scratches on the surface. If any such issues are found, they should be addressed as soon as possible to prevent them from becoming larger problems that may require more extensive repairs. Following these simple tips can help to ensure that your coated aluminium coil remains in good condition for years to come.
How Can I Identify the Quality of Coated Aluminum Coil
Methods
1. Physical test
Physical testing is important to check that the paint has been applied and cured properly to perform well during end use.
2. Visual inspection
Visual inspection is important to confirm the absence of unacceptable visual defects, as coated aluminum coil must meet aesthetic requirements as well as performance-related requirements.
Content of physical test
1. Film thickness
The proper paint film thickness is critical to the long-term performance of the paint film. For primers, low film thicknesses may result in premature corrosion or poor adhesion. For topcoats, low film thicknesses may cause premature failure due to weathering.
2. Color
One of the main reasons for purchasing prepainted aluminum coil is for its various bright colors. Since it is common for customers to match prepainted metal to other components of a building, matching specified color standards is important to the aesthetics of the final assembled product.
Color must be consistent across the width of the strip and different aluminum coils. Many factors can affect color: paint formulation and quality, film thickness, substrate color, curing temperature (PMT) and dwell time in the curing oven, and even contamination from other paints.
3. Gloss
Gloss consistency is important to provide clients with a uniform look. The final product may consist of several components made from different coils. If the gloss level is not consistent, the final product will have a poor appearance and will not look good.
4. Adhesion
Several tests are performed to check various aspects of adhesion, including T-bend, impact and various scratch tests. One of the main advantages of prepainted coil is that it can be formed after painting, so these tests are very important to ensure that the paint will not be damaged or removed during subsequent processing.
Factors that affect adhesion include paint formulation, film thickness, curing temperature (PMT), line speed, quality of treatment, plain aluminum coil quality, and cleanliness.
5. Curing degree
Curing is a term referring to the degree to which a material transitions from its initial state to its final cured state.
All coil coatings are baked, during which two things happen:
1) The solvent in the paint evaporates and burns in the afterburner.
2) Chemical reactions in the paint film bring the resin molecules together (polymerize or crosslink) to form a strong crosslinked solid paint film.
Coated aluminum coil selection factor one: Specific use. Different uses will have different requirements for some characteristics such as strength and corrosion resistance because of the specific role of coated aluminum coil. So when we buy this material, we should pay attention to roughly determine the specific coated aluminum coil type suitable for selection according to the specific use.
Coated aluminum coil selection factor two: Application environment. Different applications, the need to use coated aluminum coil in different environments, in different environments have different temperature, humidity, cleanliness and other conditions, it requires that when you buy this kind of material, pay attention to the specific circumstances of the application of the material selection, in order to ensure that the selection of materials in all aspects of performance can be applied to this application environment. For example, you can choose fluorocarbon coated aluminum coil in outdoor environment, choose polyester coated aluminum coil in indoor dry environment, and choose fluorocarbon coated aluminum coil in seaside environment. Generally speaking, fluorocarbon coated aluminum coil can better weather resistance, suitable for application in a variety of harsh environment.
Coated aluminum coil selection factor three: Pressure size, pressure transaction choose coated aluminum coil thickness to appropriate thickness, can not reduce the thickness of coated aluminum coil in order to save costs. Large pressure is suitable for the selection of thick thickness, hardness and slightly high coated aluminum coil, such as 3003, 3004, especially in roofing, the north and the south of the choice of coated aluminum coil thickness and material is different, because the north of the rain and snow is larger, so should choose a thicker, higher strength of coated aluminum coil.
Application of Coated Aluminum Coil
Building and Construction Industry
Coated aluminium coils have been widely used in the construction industry due to their lightweight, corrosion resistance and design flexibility. These coils are commonly used in roofing, cladding and facades of residential and commercial buildings. Their ability to withstand bad weather while maintaining their appearance makes them an ideal choice for architectural projects.
Transportation and Automotive Sector
The transportation industry relies heavily on lightweight, durable materials to improve performance and fuel efficiency. Coated aluminum coil is increasingly used in vehicle manufacturing, including cars, trains and ships.Their high strength-to-weight ratio makes them ideal for applications such as vehicle panels, bodywork and interior components.Additionally, the anti-corrosion properties of coated aluminum coils contribute to longer vehicle life, reducing maintenance costs over time.
Consumer electronics and appliances
In the consumer electronics and appliances industry, aesthetics and durability are paramount.Coated aluminum coils are popular for their sleek appearance, resistance to scratches and abrasion, and ease of maintenance. These coils are commonly used in the manufacture of home appliances such as refrigerators, washing machines and air conditioners. The ability to apply custom colours and finishes to Coated aluminum coils allows manufacturers to create products that stand out in the marketplace while meeting consumer preferences.
Packaging and Labeling
The packaging industry requires materials that are both functional and visually appealing.Coated aluminium coil is increasingly used for packaging applications due to its ability to create a barrier against moisture, light and oxygen.Additionally, aluminum's lightness makes it an environmentally friendly choice for packaging, reducing shipping costs and environmental impact. Coated aluminum coils are used for a variety of packaging solutions, including food and beverage containers, cosmetic packaging and pharmaceutical blister packs.
Renewable energy sector
As the world moves towards renewable energy sources, the demand for durable and lightweight materials in the solar and wind energy sectors is increasing. Coated aluminum coil is used in the manufacture of solar panels, mounting systems and wind turbine components due to its corrosion resistance and ability to withstand harsh environmental conditions. The lightweight nature of aluminum also simplifies installation and reduces structural requirements, making it a cost-effective solution for renewable energy projects.
Coated aluminum coil refers to a product with a color spraying effect on the surface of the aluminum coil, which can also be called color-coated aluminum coil and colored aluminum coil. The purpose of coating treatment is to have a beautiful effect in the fields of architecture, decoration, and home; Second, the coating process and coating thickness are directly related to the product quality and service life of the coated aluminum coil.
Generally, the production process of coil coating has five steps, namely coil input, cleaning and chemical treatment, painting, curing and finished product output. The process layout and equipment composition are different in different situations, but the basic part is the same.
First, the raw material coil input, is the continuous unwinding machine to ensure the continuous and stable input of the coil production line, some take the cross rotating beam loading machine, there are also two sets of alternating unwinding machine before and after, in short, in order to supply the coil in time;
Second, surface cleaning and chemical treatment, is to make the upper and lower surface of the aluminum roll must be cleaned, chemical pretreatment, in order to ensure that the paint can be firmly attached;
Third, is painting, a production line at least two or more roller coating machine, to ensure that the top paint and primer two layers of coating;
Fourth, the paint curing, refers to the just painted roll to contact the next roller surface to complete the fixed phone, to avoid mutual adhesion and damage, generally speaking, contains at least two curing boxes;
Fifth, is the output of finished products, to ensure that the production line speed and finished product volume transfer synchronization.
FAQ
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