Aluminum foil packaging printing Raiders

Aluminum foil is a high-grade packaging material that can replace a large area of ​​aluminum foil stamping and hot stamping. The printed products are magnificent. It not only improves the grade of packaged goods, but also improves the display value of packaged goods. It is widely used in high-end products. Trademarks and packaging. Aluminum foil is also widely used in the food and pharmaceutical packaging industries. Aluminum foil and plastic film composites effectively use high-temperature cooking and complete shading. It can be used as a cooking bag to package cooked foods. Multi-layer composite films are also used. For biscuits, snacks, drinks and other small food packaging.

In recent years, the application scope of aluminum foil packaging has been expanding. In addition to pharmaceutical packaging, food packaging, health care product packaging, etc. have been applied, prompting the continuous improvement of China's aluminum foil printing technology, and now can achieve both sides of aluminum foil can be printed on both sides. Not only can print a color of the product, but also can be printed into a variety of multi-color colorful text patterns, aluminum foil surface coated with imitation gold foil and other colors are displayed in front of consumers, this packaging form makes people feel noble Gorgeous, put it down, played a good role in propaganda and protection of products.

Based on the packaging requirements of aluminum foil, we will pay special attention to the printing and packaging process of aluminum foil in this issue.

â–² characteristics and production of aluminum foil

Aluminum foil is characterized by: metallic luster, good light protection, high heat and light reflective ability, metallic luster and reflection ability can improve the brightness of the printing color; good insulation, strong protection, gas-impermeable body and water vapor, Prevent moisture absorption and vaporization of the contents, which are not easily invaded by bacteria and insects. The shape has good stability and is not affected by humidity changes. Easy to process, can be printed on aluminum foil, color difference, embossing, surface coating, gluing, etc.; can not be forced, no sealing, pinhole and wrinkle, so under normal circumstances not alone Use, usually with paper, plastic film processing into a composite material, to overcome the lack of sealing defects, insulation and other advantages have also been fully utilized.

Aluminum foil production refers to the whole process from the beginning of the aluminum foil to the processing of the plain foil. It is a continuation of the aluminum strip cold rolling process. The aluminum foil blanks include hot rolled blanks and cast rolled blanks, which are cold-rolled into aluminum foil with a thickness of 0.4-0.7 mm, and then obtained through different thicknesses of aluminum foils through rough rolling, intermediate rolling, and finish rolling. The specific production process of aluminum foil is determined based on the type of alloy produced, the specifications of the finished product, the product quality requirements, the amount of production, and the specifications of the production equipment, production capacity, and other factors. The overall production process of aluminum foil for flexible packaging (thickness 0.0065mm to 0.007mm) is: aluminum ingot smelting - casting - cold rolling - intermediate annealing - cold rolling - aluminum foil wool - rough rolling - Medium Rolling - Finishing (Double) - Slicing - Finished Annealing - Packaging.

â–²Foil printing

Aluminum foil printing can use relief printing, gravure printing and flexo printing. Toppan printing is suitable for small-lot printing, and gravure printing and flexo printing are suitable for large-volume roll paper printing. The following measures must be taken during the printing process: greater printing pressure is required. Aluminum foil has strong barrier properties and poor absorption. The pressure causes the surface of the printing plate and the aluminum foil to come into contact with the largest area and forces the ink to adhere. Requires strong ink adhesion, drying speed, fast. Printing ink can be used, resin type offset printing fast fixing ink or offset printing ink and plastic ink. Ink is generally required to add driers to improve the drying speed, such as gravure printing must be installed hot air drying device. Before selecting the ink on the machine, you must first make a small sample to test whether the hue and dryness meet the requirements.

In the current packaging substrate, the barrier property of aluminum foil is the best. Aluminum foil is a high-grade printing and packaging material. In recent years, aluminum foil printing has become an important branch of the gravure printing industry. The application of aluminum foil in packaging is mainly used for trademarks and some high-end food packaging such as beer top label, chocolate packaging, etc. Compared with paper and plastic, aluminum foil is thin, brittle, and easy to wrinkle. It is often used during the printing process. There are some problems.

â–²Aluminum foil for packaging

Aluminum foil not only has a soft texture, good ductility, and is easy to process. It is light and beautiful, easy to recycle, and environmentally friendly. It is one of the most commonly used materials in modern packaging. However, because aluminum foil is easy to form pinholes during packaging and use to reduce its barrier properties, aluminum foil is often used as a composite material with paper, high-molecular polymers or other metal sheets. Practice has proved that aluminum foil composite materials can greatly improve the barrier properties of packaging, improve the mechanical strength and mechanical properties of aluminum foil, especially suitable for the production of composite flexible packaging and packaging lining, widely used in food, medicine, cosmetics and other commodity packaging.

In the process of using aluminum foil for the substrate, users of flexible packaging aluminum foil are often combined with other packaging materials and then printed on the surface to further produce high-temperature flexible packaging bags. In this process, aluminum foil of the substrate needs to be crimped many times at high temperature. Its use and application determine that such aluminum foil should have good mechanical properties, the surface of the aluminum foil must be clean, the pinhole of the aluminum foil should be small, and have a good surface quality.

â–² attractive prospects for aluminum foil packaging

The use of aluminum foil is very extensive, and experts have divided it into more than 20 varieties depending on the characteristics of its application. Due to the difference in the level of economic development in different countries, there is also a large gap in the aluminum foil consumption structure. In developed countries in Europe and America, the aluminum foil used for packaging accounts for 70% of the total demand. In the Chinese market, aluminum foil is mainly used as raw materials for industrial manufacturing, and packaging aluminum foil accounts for only 30% of total domestic demand. Although the development of aluminum foil packaging is relatively late, the current market is growing rapidly and the prospects are of concern.

Of course, at the same time as the rapid development of the aluminum foil industry, the recycling of aluminum foil has become an important part of the industry.

â–²Conclusion

In summary, aluminum foil packaging has developed rapidly in the fields of food, beverages, dairy products, pharmaceuticals, and electronic products, and has become an important part of the packaging industry.

Some new features appearing in the aluminum foil packaging market deserve attention.

A variety of novel packaging emerge in endlessly. Due to the unique properties of aluminum foil, such as easy bending, good adhesion, heat sealing, excellent surface printing performance and decorative effect, a more abundant appearance of packaging design has become a new feature of aluminum foil packaging applications. Take chocolate packaging as an example. Our common chocolate packaging is square, bar, round, diamond, oval, heart-shaped, and so on. In foreign countries, there are manufacturers to give full play to their imagination and design chocolates into the shapes of Santa Claus, historical figures, various cute little animals and cartoons, and the surface is decorated with corresponding pattern colors. There are many similar designs, such as the shape of a gold coin designed with golden decoration; there are various shapes, such as football, cars, toys and so on. The rich shape of chocolate packaging is unimaginable without aluminum foil packaging.

From this point of view, the application of aluminum foil in the packaging industry will also become more and more widespread.