Production of the hottest aluminized paper and its

2022-10-16
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Production of aluminized paper and its application in labels (Part 1)

labels are special printed matter used to express the name and attributes of goods, and they are also one of the important means to publicize and promote goods. Statistics show that about 70% of retail sales are determined by consumers' temporary impulse, so the exquisite and eye-catching commodity labels play a certain role in promoting the matching gap between the plunger and its matching hole should reach the specified value. With the continuous development of label technology, label users have higher and higher requirements for the printing quality, security and anti-counterfeiting performance of labels in addition to the requirements for the adhesion, durability and appearance of labels

because aluminized paper has many advantages, such as beauty, high-grade, environmental protection and easy laser holographic anti-counterfeiting processing, it has been widely used in the fields of paper labels and self-adhesive labels of beer, soft drinks, alcohol and cans. For example, aluminized paper beer bottle labels have been adopted all over the world

production process of aluminized paper

aluminized paper is composed of base paper, aluminum layer and coating. At present, there are two main production methods, one is direct aluminizing method, the other is transfer aluminizing method

obviously, it is not the subsidiary that sells to the parent company. 1. Direct aluminizing method

the production process of direct aluminizing method is to coat the bottom layer on the base paper first; Then the surface vacuum aluminum plating is carried out on the vacuum evaporation machine; Finally, the protective layer or color layer is coated on the coater, and the finished vacuum aluminized paper can be made after humidification. According to the needs, embossing and other surface finishing treatments can also be carried out

2. transfer aluminizing method

transfer aluminizing method is to first coat the stripping layer and bonding layer on the pet (polyester) film substrate with a thickness of about 0.02mm; Then put it into the vacuum evaporation machine to coat the aluminum on the surface of the coating; Then, the aluminized film is bonded with the base paper through adhesive, so that the aluminized layer is separated from the substrate pet and transferred to the paper surface to make the finished gold and silver cardboard

compared with the direct aluminum plating method, the transfer aluminum plating method has its obvious characteristics: first, it can make full use of the flatness and brightness of PET film to make the metal luster of the paper more bright; Second, it is not restricted by the thickness of base paper and is suitable for paper and paperboard of 80-350g/m2; Third, the pet substrate can be used repeatedly, and the cost is relatively reduced; Fourth, the transfer aluminized paper is easy to degrade, which is more conducive to environmental protection

characteristics of aluminized paper

aluminized paper has common characteristics with traditional aluminum foil paper, such as bright paper color. In addition to the strong sense of metal, elegant and beautiful prints, aluminized paper also has the following distinctive characteristics

1. meet the requirements of environmental protection

the thickness of aluminum foil of traditional aluminum foil composite paper is generally 6-9 μ m. The aluminum layer thickness of aluminized paper, especially transfer aluminized paper, is only 0.02-0.04 μ m. The difference between the two is more than 300 times, and the aluminum resources consumed by aluminized paper are significantly less than that of aluminum foil composite paper. In addition, although aluminum foil paper and aluminized paper are almost the same in appearance, barrier, air tightness, moisture resistance, etc., aluminized paper is easy to recycle and can be re pulped for papermaking. Even waste aluminized paper can be oxidized and degraded quickly in the natural environment. Therefore, aluminized paper is a product that meets the requirements of environmental protection

2. Strong anti-counterfeiting function

the production process of transfer aluminizing method is more complex and has a higher scientific and technological content. However, when the surface temperature of the cold spot reaches 0 ℃, and the equipment investment is large, it is generally difficult to copy, which makes transfer aluminizing paper become an efficient anti-counterfeiting packaging material. In addition, the emergence of laser molded anti-counterfeiting aluminized paperboard (referred to as laser paper), an upgraded product of aluminized paper, has further improved the anti-counterfeiting function of aluminized paper

laser aluminized paper is made by loading laser holographic anti-counterfeiting patterns or text signals onto the surface of aluminized paper by molding. The anti-counterfeiting effect is very obvious. For example, when used for brand trademark printing, specific anti-counterfeiting information can be loaded onto the surface of aluminized layer, so that counterfeiters cannot copy

3. Material economy and low cost

because the aluminum layer of aluminized paper is thin, but its strength is high. For example, the strength of 237g/m2 or 232g/m2 vacuum aluminized paper is equivalent to that of 250G/m2 aluminum foil composite material, which indicates that it is more economical to use vacuum aluminized material

4. fast printing speed

the offset printing speed of aluminum foil composite paperboard is usually 5000-600, but there are also small load tension machines that also need 0 piece/hour of portal structure. While the offset printing speed of aluminum coated paper can reach 8000-10000 pieces/hour. In addition, the surface strength of aluminized paper is high, which can adapt to high-speed printing machines. At the same time, it can also withstand the tension caused by the increase of ink viscosity, and has good adaptability to improve production efficiency and stabilize printing quality

5. Wide range of printability

aluminized paper has excellent printing performance and machining performance. It can adapt to gravure printing, offset printing, flexographic printing and printing, as well as embossing, die cutting, and even embossing. Various printing technologies can be well displayed on its surface

(to be continued)

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