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Application of aluminum foil paper

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in order to establish the corporate image, enhance the brand value and meet the needs of anti-counterfeiting, while ensuring the internal quality of cigarettes, cigarette industry enterprises pay more and more attention to the development and utilization of cigarette packaging lining – aluminum foil paper, and print pictures and texts on it one after another, so that cigarette aluminum foil paper can enter the stage of both pictures and texts A new development period with both moisture-proof and anti-counterfeiting functions
the cigarette aluminum foil paper printed with pictures and texts produced by China’s cigarette industry enterprises has a common feature, that is, whether on the front or back, most of them are printed with some or full version factory names printed in Chinese, Chinese pinyin or English, and some are also printed with enterprise logo. If the aluminum foil paper specially made for a brand is printed with not only the factory name, but also the brand name and decoration pattern. Specifically, it can be divided into the following categories
one is to print the factory name or abbreviated name and enterprise logo on the upper front of the aluminum foil paper. For example, for the cigarettes produced by Bengbu cigarette factory, the aluminum foil paper is printed with the factory name “Bengbu cigarette factory” and the English logo “Bengbu ciarette factory” inscribed by the famous calligrapher Zhang Kaifan; The aluminum foil paper of the cigarettes produced by Huaiyin cigarette factory is printed with the words “Huaiyin cigarette factory”, “Huaiyin” and the enterprise logo
one is that the full version of Chinese, Pinyin or English factory name is printed on the front or back of the aluminum foil paper, and some are also printed with the enterprise logo. For example, for the cigarettes produced by Ningbo cigarette factory, the full version of Chinese Pinyin factory name is printed on the front of the aluminum foil paper; For the cigarettes produced by Kunming Cigarette Factory, the full version of the English factory name is printed on the front of the aluminum foil paper; For cigarettes produced by Yuxi cigarette factory, the aluminum foil paper is printed with the logo of Hongta Group and the factory name in English; The aluminum foil paper of the cigarettes produced by the cigarette factory of Yizhong tobacco (Group) Co., Ltd. is printed with the full version of the group logo and the Chinese factory name
one is specially made aluminum foil paper for a certain brand, which is characterized by full plate factory name, brand name and trademark pattern of the brand printed on the front or back of the aluminum foil paper. For example, the “seven wolves” cigarette of Longyan Cigarette Factory has a full version of the trademark pattern of “seven wolves” printed on the reverse side of its aluminum foil paper; The “Guobin” cigarette of Chuxiong cigarette factory is printed with the words “Guobin produced by Hongta Group Chuxiong cigarette factory” and its trademark pattern on the reverse side of the aluminum foil paper; For the “Dahongying” cigarette of Ningbo cigarette factory, the full version of Chinese Pinyin factory name is printed on the front of the aluminum foil paper, and “” Chinese pinyin and trademark pattern are printed on the back
there is another kind of cigarette aluminum foil paper printed with advertising words, such as high-quality 88 “Honghe” and high-quality 99 “Honghe” cigarettes of Honghe Cigarette General Factory. The reverse side of the aluminum foil paper is printed with full version of advertising words of “Honghe Cigarette accompanies the king”
in fact, it is also common in industrial applications. For example, it is used in manufacturing a series of cables of sywv75-5. Aluminum foil paper belongs to the category of special paper in label printing. Aluminum foil paper labels mainly use laminated aluminum foil paper, including:
laminated aluminum foil paper
1 Bright silver foil Matte silver foil
3 Matte gold foil
4 Introduction to several aluminum foils
(I) air conditioning foil
air conditioning foil is a special material for manufacturing heat exchanger fins for air conditioners, and the early air conditioning foil was plain foil. In order to improve the surface properties of plain foil, anti-corrosion inorganic coating and hydrophilic organic coating are coated before forming to form hydrophilic foil. Hydrophilic foil accounts for 50% of the total amount of air conditioning foil, and its use proportion will be further improved. In addition, there is a hydrophobic foil, which makes the surface of the fin have the function of hydrophobicity and prevents the condensation water from adhering. Because the technology of improving the surface defrostability of hydrophobic foil needs to be further studied, there is little practical production
the thickness of air conditioning foil is 0.1mm ~ 0.15mm. With the development of technology, air conditioning foil has a trend of further thinning. The thickness of Japan’s leading product is 0.09mm. In the extremely thin state, aluminum foil must have good formability, its structure and properties must be uniform, less metallurgical defects and small anisotropy. At the same time, it is required to have high strength, good ductility, uniform thickness and good flatness. The specification and alloy of air conditioning foil are relatively single, which is suitable for large-scale production, but its market is highly seasonal. For professional manufacturers of air conditioning foil, it is difficult to solve the contradiction between short supply in peak season and almost no demand in off-season
driven by the strong market demand, the production capacity and technical level of air-conditioning foil in China have been continuously improved in recent years. Now there are enterprise groups producing air-conditioning foil in large, medium, small, medium and low levels. The product quality of some large enterprises such as Huabei aluminum and Bohai aluminum has basically reached the international advanced level. Due to the excess domestic production capacity, the market competition is extremely fierce
(II) cigarette packaging foil
China is the largest cigarette production and consumption country in the world. At present, there are 146 large cigarette factories in China, with an annual output of 34 million cases of cigarettes. Basically, cigarette foil packaging is adopted, of which 30% are sprayed foil and 70% are rolled aluminum foil. The consumption of rolled aluminum foil is 35000 tons. With the enhancement of people’s health awareness and the impact of imported cigarettes, The growth of cigarette foil demand has slowed down significantly and is expected to increase slightly in recent years. China’s cigarette packaging foil accounts for 70% of the total double zero foil. At present, two or three domestic enterprises can produce high-quality cigarette foil, and the technical level is equivalent to the international level, but there is a certain gap between the overall quality of domestic cigarette foil and the international level
(III) decorative foil
decorative foil is a decorative material applied in the form of aluminum plastic composite, which makes use of the characteristics of good coloring and high photothermal reflectivity of aluminum foil. It is mainly used for decoration of buildings and furniture and packaging of some gift boxes. The application of decorative foil in China’s construction industry began in the 1990s. It has spread rapidly from central cities such as Shanghai, Beijing and Guangzhou to all parts of the country. The demand has increased sharply in recent years. Generally, as a decorative material for the inner wall of buildings and indoor furniture, it is also widely used in the door and interior decoration of commercial institutions
decorative foil has the advantages of heat insulation, moisture-proof, sound insulation, fire prevention and easy cleaning. It also has luxurious appearance, convenient processing and fast construction and installation speed. At present, China’s construction and home decoration industries have formed an upsurge in the application of decorative foil. With the rapid development of China’s construction industry and the continuous popularization of decorative foil application, the demand for decorative foil will increase significantly. In addition, the use of decorative foil packaging gifts is very popular abroad. It has developed rapidly in China in recent years and is expected to have a good prospect. Advantages of carbon coated aluminum foil in lithium battery application
1 Inhibit battery polarization, reduce thermal effect and improve magnification performance
2. Reduce the internal resistance of the battery and significantly reduce the dynamic internal resistance increase in the cycle process
3. Improve the consistency and increase the cycle life of the battery
4. Improve the adhesion between the active material and the current collector and reduce the manufacturing cost of the electrode
5. Protect the current collector from corrosion by electrolyte
6. Improve the processability of lithium iron phosphate and lithium titanate materials
thickness of coating on both sides: 4 ~ 6 of model a μ m. Section B 2 ~ 3 μ m。
conductive coating
the surface treatment of battery conductive substrate with functional coating is a breakthrough technological innovation. Carbon coated aluminum foil /copper foil is to evenly and finely coat the dispersed nano conductive graphite and carbon coated particles on aluminum foil /copper foil. It can provide excellent static conductivity, collect the micro current of active substances, greatly reduce the contact resistance between positive /negative materials and current collector, improve the adhesion between them, reduce the use of binder, and significantly improve the integrity of the battery. The coating can be divided into two types: water (water agent system) and oil (organic solvent system). Performance advantages of carbon coated aluminum foil /copper foil
1 Significantly improve the consistency of battery pack use and greatly reduce the cost of battery pack. For example:
· significantly reduce the increase of dynamic internal resistance of cell; · improve the differential pressure consistency of the battery pack; · extend battery life; · significantly reduce the cost of battery pack

2. Improve the adhesion between the active material and the current collector, and reduce the manufacturing cost of the electrode. For example:
· improve the adhesion between cathode materials and collectors using aqueous system; · improve the adhesion of nano or submicron cathode materials and collectors; · improve the adhesion of lithium titanate or other high-capacity negative electrode materials and collectors; · improve the qualification rate of pole piece and reduce the manufacturing cost of pole piece

adhesion test chart of battery pole piece coated with carbon aluminum foil and light foil
after using carbon aluminum foil, the adhesion of pole piece is increased from 10GF to 60gf (3m tape or hundred grid knife method), and the adhesion is significantly improved
3. Reduce polarization, improve magnification and gram capacity, and improve battery performance
· if the proportion of adhesive in the active material is partially reduced, the gram capacity is increased
· improve the electrical contact between the active substance and the collector
· reduce polarization and improve power performance
battery magnification performance diagram of different aluminum foils
where C-Al is carbon coated aluminum foil, e-al is etched aluminum foil, and u-al is light aluminum foil
4 Protect the current collector and prolong the service life of the battery. For example:
· prevent current collector corrosion and oxidation; · improve the surface tension of the collector and enhance the easy coating performance of the collector; · it can replace the etching foil with higher cost or replace the original standard foil with thinner foil

battery cycle curves of different aluminum foils (200 cycles)
where (1) is light aluminum foil, (2) is etched aluminum foil, and (3) is carbon coated aluminum foil

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