《Color-coated aluminum coil: the "magic material" that decorates the colorful world》
1. What is color coated aluminum coil?
As a new type of material, color-coated aluminum coil plays an important role in many fields today. It is a coloring treatment on the surface of aluminum alloy, with very stable performance, not easy to be corroded, and light weight per unit volume, making it the best metal material.
1. Product Features
Flatness: Color-coated aluminum coils are specially treated, with no composite high-temperature indentations on the surface, no residual stress on the plate surface, and can remain unchanged even after shearing. This feature enables it to maintain good flatness during processing and use, providing convenience for subsequent applications.
Environmental protection: It is resistant to salt, alkali and acid rain corrosion, will not corrode and produce toxic bacteria, and will not release any toxic gases, which is environmentally friendly. At the same time, its flame retardancy is not lower than B1 level, which is safer and more reliable during use.
Mechanical properties: Select high-quality aluminum and other materials, and use composite technology to make it resistant to bending and folding. Under the four-season climate, changes in wind pressure, temperature, humidity and other factors will not cause bending, deformation, expansion and other problems, and can adapt to various complex environmental conditions.
Decorative: It can be painted with a variety of patterns such as wood grain and stone grain, with realistic physical texture and fresh natural beauty. The pattern can be selected according to the individual needs of the customer, enriching the humanistic connotation of the product and bringing more aesthetic enjoyment to people.
Weather resistance: The paint pattern formed by continuous coating and high temperature baking has high gloss retention, good color stability, and minimal color difference. The polyester paint has a 10-year warranty, and the fluorocarbon paint has a warranty of more than 20 years, with an extremely long service life.
(ii) Product details
The coating process of color-coated aluminum coils is diverse, and the most common ones are fluorocarbon coating and polyester coating. Fluorocarbon coated color-coated aluminum coils use PVDF resin, and the chemical structure of the fluorine acid base material is combined with fluorine/carbon bonds, which has super weather resistance, anti-fading and anti-ultraviolet properties. After high-temperature baking and film formation, the molecular structure in the coating is tight and can be used in various harsh environments. Polyester coated aluminum coils are polyester coatings formed by multiple baking on the surface of the aluminum plate, which can form a firmly attached continuous solid film with protective decorative properties. According to the glossiness, it can be divided into matte and high-gloss series, which can give color aluminum products rich colors, good glossiness and smoothness, as well as superior texture and feel, and increase the sense of hierarchy and three-dimensionality.
In terms of color selection, color-coated aluminum coils can choose a variety of colors according to the RAL color card. Common colors include blue, red, milky white, etc., and colors can also be customized according to the national standard color card. Among them, blue, light blue, grass green, white, and red are more commonly used colors. In addition, the color can be adjusted according to the specific needs of customers to meet the personalized needs of different customers.
(III) Application fields
Color-coated aluminum coils are widely used in the fields of construction, electronics, transportation, furniture and home decoration. In construction, it can be used for aluminum-plastic panels, aluminum honeycombs, roof corrugated panels, fireproof veneers, aluminum ceilings, blinds, rolling shutters, garage doors, awnings, gutters, etc. For example, the main raw material of blinds has been changed from iron blinds to color-coated aluminum coils for blinds, which have the advantages of low density and suitable use. Ceilings generally use PVC plastics, and color-coated aluminum coils as ceiling materials have the advantages of light weight and long life. Roof tiles generally use 1 series and 3 series aluminum coils as masterbatch, such as 1060 aluminum coils and 3003 aluminum coils, which have the advantages of light material and low density.
In the field of electronics and electrical appliances, it can be used for computer cases, electrical panels, elevators, electrical housings, solar reflectors, solar water heater tank housings, etc. The good plasticity and mechanical processing properties of color-coated aluminum coils make them ideal materials for these products.
In terms of transportation, it can be used for traffic facility signs, vehicle interiors, ship decorations, advertising panels, chassis shells, bags, metal packaging, aerospace, car radiators, etc. Its beautiful appearance, light weight, corrosion resistance, impact resistance and other characteristics provide a better choice for products in the transportation field.
In furniture decoration, it can be used for metal furniture, furniture facings, kitchen cabinets, various countertops, compartment partitions, mobile houses, toll booths, pipe insulation, etc. It has the characteristics of beautiful appearance, easy processing, good fire resistance, easy cleaning, easy maintenance, and multiple colors, adding more colors and choices to home decoration.
2. Production process of color coated aluminum coil
The production process of color-coated aluminum coil is relatively complicated, mainly including a series of processing of the bare aluminum coil, and finally becoming a color-coated aluminum coil with various colors and properties. The following will introduce each link of its production process in detail.
The plain aluminum coil becomes the color-coated aluminum coil after cleaning, chroming, roller coating, baking and other processes.
The bare aluminum coil must first be cleaned to remove impurities and dirt on the surface. Then it is chromed to form a chromide film on the surface of the aluminum coil to improve its corrosion resistance and adhesion with the paint. Then the paint is evenly applied to the surface of the aluminum coil by roller coating. Finally, it is baked to solidify the paint and form a solid coating. After these processing steps, the bare aluminum coil becomes a color-coated aluminum coil with various colors and decorative effects.
Cleaning and pretreatment, including water jet cleaning and chemical conversion coating treatment, improves corrosion protection and coating adhesion.
Cleaning and pretreatment are important steps in the production of color-coated aluminum coils. The pretreated aluminum coils will be repeatedly cleaned with water jets, which is more effective than traditional cleaning methods, and the water can be reused, reducing power consumption. After water jet cleaning, the surface of the aluminum coil is cleaner, laying the foundation for subsequent processing.
Chemical conversion film treatment is to form a layer of chemical conversion film on the aluminum surface to further improve the product's corrosion resistance and coating adhesion. In this process, hot alkali degreasing is first performed. Due to the high speed of the pre-coating line, the degreasing agent used is generally of high concentration. Typical degreasing agents contain sodium hydroxide, sodium carbonate, water glass, phosphate and other components. The hot alkali degreasing process is generally divided into two steps, and spraying and brushing are often used to ensure that the substrate surface is clean.
Then, hot water cleaning is carried out, mainly to clean the residual degreasing agent on the surface of the substrate to prevent the degreasing agent from causing secondary pollution to the substrate. The method of use is mostly immersion cleaning and spray brushing. The hardness of the water used should not be too high, otherwise the minerals in the water will form mineral spots on the surface of the substrate.
Finally, the passivation treatment is carried out. The passivation treatment is to form a conversion film on the surface of the substrate by means of pressurized spraying, dipping or roller coating. Generally, the pressurized spraying method is used, but the mud residue produced during the use of the passivation liquid often clogs the spray hole and affects the spraying effect. Although the dipping method solves this problem, the consumption of the passivation liquid is large. Roller coating is the best passivation construction method, which has the advantages of uniform coating, economical and practical, and no need for rinsing. Aluminum plates generally use chromate/oxide type treatment agents, which contain chromate, chromic acid, phosphoric acid, fluoride and molybdate. If used to treat aluminum plates for food and beverages, phosphoric acid must be added to this type of treatment agent.
The coil coating process is divided into two stages: primer and topcoat.
The coil coating process is mainly divided into two stages: primer and topcoat. In the first stage, the aluminum coil passes through the roller coater and is coated with primer on one or both sides. The primer protects the aluminum coil. After the primer roller is applied, the paint needs to be cured, otherwise the surface will be damaged during the subsequent transportation process.
After drying, the aluminum coil passes through the second roller coater, at which time one or both sides of the aluminum coil are coated with topcoat. Topcoat roller coating is a very critical step, and the surface of the color-coated aluminum coil is colored and painted according to customer requirements. Similar to primer roller coating, topcoat roller coating also needs to be cured after completion.
Curing and subsequent processing, set the appropriate temperature to ensure the coating is cured, and the cured aluminum coil can be further processed into other shapes.
The aluminum strip passes through the curing oven, and the temperature is set at a regulated temperature to ensure that the volatiles on the aluminum strip are removed and the coating is completely cured. According to the needs of the coating system, the curing temperature is set between 200 and 300 degrees Celsius, which is a key technical point to ensure product quality.
In terms of processing, the coated aluminum coil can be further processed into other shapes, such as rolling shutters, strips or embossed patterns, etc. When using color-coated aluminum coils in different fields, different coatings and types of products can be selected according to different requirements, so that it can play a better role in the field.
3. What are the uses of color-coated aluminum coils?
In terms of construction and decoration: Color-coated aluminum coils are widely used in the fields of construction and decoration. It can be used for aluminum-plastic composite panels, aluminum veneers, metal curtain walls, etc., adding a beautiful and elegant appearance to the building. Its good fire resistance can improve the safety of the building to a certain extent. At the same time, there is no composite high-temperature indentation on the surface of the color-coated aluminum coil, and there is no residual stress on the plate surface. It can remain unchanged even after shearing, which makes it more convenient to process and install in architectural decoration. For example, in terms of building exterior wall insulation materials, corrugated boards, roof panels, ceilings, etc., color-coated aluminum coils can provide a rich color selection and texture, while strengthening the waterproof, anti-oxidation, and fireproof capabilities of the building exterior walls and roofs. It also has excellent sound absorption and decorative properties, which are beautiful and practical. Aluminum alloy rolling shutter doors, garage doors, awnings, aluminum ceilings, etc. are also common application scenarios for color-coated aluminum coils. These products not only have good decorative effects, but also meet the functional requirements of different buildings.
Electronics and household appliances: Color-coated aluminum coils also play an important role in the field of electronics and household appliances. They are used in elevators, electrical housings, computer cases, etc., and have the advantages of light weight and corrosion resistance. The good plasticity and mechanical processing properties of color-coated aluminum coils enable them to meet various complex design requirements. For example, computer cases are made of color-coated aluminum coils, which are both light and beautiful, and can effectively protect the internal electronic components. Color-coated aluminum coils are also often used in electrical panels, lighting and other products. They have beautiful appearance and will not fade or change color, which can enhance the grade and texture of home appliances. In addition, color-coated aluminum coils are also used in solar reflectors, solar water heater tank shells, etc., and their corrosion resistance can ensure the long-term use of products in outdoor environments.
Road traffic, automobiles and others: Color-coated aluminum coils are also widely used in road traffic, automobiles and other fields. They are used for traffic facility signs, vehicle interiors, etc., and have the properties of impact resistance and easy processing. Traffic facility signs need to have good weather resistance and visibility. Color-coated aluminum coils have good color stability and minimal color difference, which can meet this requirement. The color-coated aluminum coils used in vehicle interiors are not only beautiful, but also lightweight and wear-resistant. Color-coated aluminum coils can also play their unique advantages in ship decoration, advertising display boards, chassis shells, luggage, metal packaging, aerospace, and automobile radiators. For example, luggage is made of color-coated aluminum coils, which are light and beautiful, and have certain wear resistance. In the field of transportation, color-coated aluminum coils are used as the shells of vans, refrigerated boxes, rail transportation vehicles, etc., and have a large market space.
Furniture and home decoration: In the field of furniture and home decoration, color-coated aluminum coils are used for metal furniture, kitchen cabinets, etc., and have the characteristics of easy maintenance and multiple colors. Metal furniture is made of color-coated aluminum coils, which are not only beautiful in appearance, but also easy to clean and maintain. Kitchen cabinets use color-coated aluminum coils, which can withstand the humid and oily environment in the kitchen, and can also provide a rich color selection to meet the personalized needs of different consumers. All kinds of countertops, compartment partitions, mobile houses, toll booths, pipe insulation, etc. can also use color-coated aluminum coils, which are beautiful, light, corrosion-resistant, impact-resistant, etc., providing more choices for home decoration and public facilities construction.
4. Market prospects of color-coated aluminum coils
Industry status: Color-coated aluminum coils play an important role in the aluminum plate manufacturing industry. They can meet the plate requirements of different industries and are widely used in many industries.
my country is a major aluminum industry country, and its aluminum processing output and consumption have ranked first in the world for many years. As an important part of aluminum processing, the market for color-coated aluminum coils has continued to grow with the development of the aluminum industry. At present, the domestic color-coated aluminum industry has formed three industrial clusters in the Yangtze River Delta, the Pearl River Delta and the Bohai Rim, and manufacturers and corresponding professional material supporting enterprises are also concentrated in these regions.
Due to the limitations of R&D technology, process level and financial strength, most domestic color-coated aluminum manufacturers are limited in scale and their products mainly meet the needs of the mid- and low-end markets. However, companies with independent R&D capabilities and brands have occupied a large share in different regions or market segments by virtue of their respective advantages.
Color-coated aluminum coils provide various types of aluminum sheets for different industries by coloring the aluminum sheets with surface coatings in the aluminum sheet manufacturing industry. They can prevent direct light and protect the aluminum sheet material well, achieving ideal use effects. After multiple baking and coating on the surface of the aluminum sheet, the protective layer formed not only gives the aluminum a variety of colors, but also has good gloss and smoothness.
Development prospect analysis: Although there are similar process treatments in the market, color-coated aluminum coils can provide people with better aluminum plate processing through continuous innovation and improved process treatment technology, and there is broad market space in the future.
Although color-coated aluminum coils are widely used, there are indeed many similar process treatments in the market. However, with the advancement of technology, the process treatment technology of color-coated aluminum coils is also constantly improving. For example, the development of new coatings is targeted at specific application areas, with excellent properties such as high weather resistance, self-cleaning, and antibacterial properties; coating process optimization improves coating efficiency and coating quality and reduces production costs by improving process parameters and equipment structure; the application of intelligent production technology realizes the automation and intelligence of the production process, improves production efficiency and product quality stability.
In the future, the color-coated aluminum coil industry will pay more attention to the research and development and application of environmentally friendly coatings to reduce environmental pollution during the production process. At the same time, according to the needs of different application fields, special functional coatings such as heat insulation, sound insulation, and fire prevention will be developed. Further promote the application of intelligent production technology in the color-coated aluminum coil industry to achieve full automation and intelligence of the production process. With the diversification of consumer demand, the color-coated aluminum coil industry will also pay more attention to the expansion of personalized customization services to meet the personalized needs of customers.
Color-coated aluminum coils are very popular, especially in the aluminum sheet industry. They not only improve the texture and feel of the aluminum sheet, but also increase the sense of layering and three-dimensionality. Even if the aluminum sheet is exposed to ultraviolet rays, wind and rain, there is no need to worry about the degree of damage to the aluminum sheet. Therefore, the future market space for color-coated aluminum coils is broad.
Analysis of market demand driving force: The color-coated aluminum industry is widely used, currently mainly in the construction and food and beverage industries. The rapid development of transportation, electronics and electrical appliances and other industries has provided it with a broader development space.
In the construction industry, with the acceleration of urbanization and the continuous growth of the construction industry, the market demand for color-coated aluminum coils for construction has maintained steady growth. Especially in the fields of green buildings and prefabricated buildings, the demand for high-performance, environmentally friendly color-coated aluminum coils continues to increase. Color-coated aluminum coils can provide a rich variety of color choices and textures in building exterior wall insulation materials, corrugated boards, roof panels, ceilings, etc., while enhancing the waterproof, anti-oxidation, and fireproof capabilities of building exterior walls and roofs. It also has excellent sound absorption and decorative properties, which are beautiful and practical. Aluminum alloy rolling doors, garage doors, awnings, aluminum ceilings, etc. are also common application scenarios for color-coated aluminum coils.
In the food and beverage industry, the current domestic color-coated aluminum mainly meets the packaging needs of cans and other food packaging. As people's requirements for the safety and aesthetics of food packaging increase, the application of color-coated aluminum coils in the food and beverage industry will continue to expand.
In the transportation industry, the development of automobile, rail transportation and other transportation fields has continued to increase the demand for color-coated aluminum coils. Lightweight, high-strength, corrosion-resistant color-coated aluminum coils have broad application prospects in the transportation field, such as traffic facility signs, vehicle interiors, ship decorations, advertising panels, chassis shells, bags, metal packaging, aerospace, automobile radiators, etc.
In the electronics and electrical industry, home appliances are constantly upgraded, and the requirements for the appearance and performance of color-coated aluminum coils are constantly increasing. At the same time, with the rise of the smart home market, the market prospects for color-coated aluminum coils for home appliances are broad. Color-coated aluminum coils are used in elevators, electrical housings, computer cases, etc., and have the advantages of light weight and corrosion resistance. Its good plasticity and
