Talking about Vacuum Aluminizing Paper in Green Packaging Materials

I. Introduction

Vacuum aluminum-plated paper is a new type of green packaging material widely used in packaging industry in the world since the 1980s. At present, the largest application market for vacuum aluminized paper is North America and Europe, which account for 80% of the world market. The annual consumption of vacuum aluminum-plated paper in North America is 120,000 tons, and the annual consumption of European vacuum aluminum-plated paper is 90,000 tons. In the past decade, the growth rate of vacuum aluminum-plated paper in the North American and European markets has exceeded 6%. Therefore, the rapid development of vacuum aluminum-plated paper in the Asia-Pacific region has become a trend and the outlook is optimistic.

Second, vacuum aluminum plated paper in the prominent place in the packaging material

Vacuum aluminum-plated paper has advantages that aluminum foil composite paper cannot match. The details are as follows:

1. Cost: The cost of aluminizing is lower than aluminum foil compounding. The main purpose is to reduce the cost by reducing the thickness of the metal layer, increasing the speed of the production line, improving the design and material management. First, the thickness of the aluminum layer of aluminum-plated paper is only 0.025um to 0.035um, which is 1/200 to 1/300 of the aluminum used in aluminum foil composite paper, ie, the amount of aluminum used is small; secondly, it is suitable for high-speed printing, and is superior to aluminum foil composite paper. The smoke mark is approximately 200 packets/minute higher; in addition PET film can be reused 6-8 times. Therefore, vacuum aluminum-plated paper can ultimately save 10% in cost and cost compared with aluminum foil.

2. Environmental protection and hygiene: Although aluminum foil gold and silver cardboard and PET composite paperboard have become high-grade packaging materials with good decorative performance and anti-counterfeiting performance, they are non-environmental materials. Aluminum foil gold and silver cardboard is a composite product of aluminum foil and paper, aluminum foil thickness is 7um, so it can not be recycled as aluminum products, can not be recycled as paper, can not be completely incinerated, is not conducive to environmental protection. PET composite paperboard is a composite product of aluminized film and paper. Because plastic film cannot be degraded, it is not conducive to environmental protection. Aluminum-coated paper is due to the use of the least aluminum material, so the aluminum-coated paper is easy to handle and recycled, and it is an environmentally friendly product. In addition, the raw and auxiliary materials used in the production of aluminized paper are odorless and non-toxic, conform to the US FDA standards and are hygienic.

3. Anti-counterfeit: Vacuum aluminum-plated paper is easy to laser holographic processing, vacuum aluminum-plated paper is called laser spray aluminum paper (referred to as laser paper). The laser sprayed aluminum paper is formed by loading a laser holographic pattern or text signal onto the surface of the sprayed aluminum paper by means of molding. The laser brightness of the laser sprayed aluminum paper is several times stronger than that of a conventional laser packaging machine'target=_blank>transparent film, and the laser pattern cannot be wiped off. Moreover, the laser sprayed aluminum paper has a relatively complicated production process, high technological content, and large investment in equipment. Making fake and shoddy products prohibitive, so laser spray aluminum paper has a very good security.

4. Wide range of applications: Aluminized paper is widely used in the packaging of tobacco, wine, food, medicines and daily necessities in daily life. After printing on aluminum-plated cardboard with white cardboard as a substrate, it can be applied to the outer packaging of hard-packed cigarettes and alcoholic beverage boxes. Aluminized paper made from imported wood pulp base paper can be applied to labels on glass bottles. The use of aluminum-coated paper for food and pharmaceutical packaging can solve the problem that powdered medicines packed in composite packaging films are not easily pourable due to electrostatic attraction. Aluminized paper can be divided into low weight (50 grams or less) and high weight (300 grams or more). Low-thick aluminized paper not only has the flexibility of paper, but also has the air barrier property of aluminum foil composite paper. It is mainly used for the packaging of candy, chocolate, chewing gum and other products, but the application on cigarette liners is still in the experimental stage. , has not yet entered the batch use; high grams of heavy aluminum plated cardboard printing transparent colorful ink, can reveal a noble and rich metallic luster, mainly used for moon cake box, cosmetics box, toothpaste box, wine box and gift box packaging production, exquisite Luxury, can enhance product value.

Third, vacuum aluminum plating paper technology

The vacuum aluminum-plated paper is heated in a high vacuum of 1.33×102 Pa or more by resistance, high frequency or electron beam, and the aluminum wire is heated to about 1400° C. and vaporized and then adhered to a paper substrate. According to its production process can be divided into direct method (paper plated aluminum) and transfer method (film surface aluminum) two. The direct method is to pre-coat the surface of the paper to improve the flatness and brightness of the paper surface, and then the paper is directly placed on a vacuum aluminum plating machine for aluminum plating. This method has a high requirement for paper, and is suitable for 40 to 120 g/m2 coated paper, white board paper, cardboard, and the like. The transfer method uses PET and BOPP films as transfer substrates, which are coated, colored, sprayed, compounded, and peeled to make aluminum sprayed metal layers with metallic luster transferred to the surface of paper or cardboard through adhesive action. method.