The experience of using rhodium-plated paper in the printing process

First, perfect printing materials need improvement <br> Qingdao Lima Dun Packing Co., Ltd.

Qingdao Lima Dun Packing Co., Ltd. currently uses aluminum-plated vacuum paper which is produced in Taiwan and Southeast Asia. There are some problems in the use of vacuum aluminum-plated paper, and it is hoped that the material manufacturers will further improve.

1. Brightness problem. The current vacuum aluminized paper is neither bright nor dumb, and high gloss and matte effects are not in place.

2. The problem of ink adsorption. The aluminum layer ink of vacuum aluminum-plated paper has poor ink adsorption, especially when the offset printing is performed, the process of ink penetration, polymerization, oxidation, conjunctiva, and drying on the vacuum aluminum-plated paper is longer.

3. Curl problem. Since the front side of the vacuum aluminum-plating paper is aluminum and the back side is a backing paper, infrared drying is used for the gravure printing. Since the expansion ratio of the front and back surfaces of the vacuum-coated aluminum paper is different, curling easily occurs. In addition, the vacuum aluminum-plated paper is exposed to the air, and this phenomenon may also occur due to the different water absorption properties on the front and back surfaces.

4. Backwater problem. Many vacuum aluminum coated paper manufacturers often back coat water in order to facilitate the drying of materials. However, they do not perform backwater treatment before they are provided to printing companies. This makes vacuum aluminum coated paper easily curled during the printing process. Printing companies are The use of vacuum aluminum-plated paper is an extra step in the process, and many printing companies that do not understand the reason are simply thinking that the material is poorly printable. This shows that many material companies have insufficient production experience and awareness, and have not completed the conversion of production consciousness to service awareness. They have not stood in the printing industry, and they have taken the user’s point of view to consider whether the products they produce are the most convenient for users. Use to meet the needs of users.

5. Waterproof problem. This problem is more obvious in the waterproof vacuum aluminized wine labels. It is mainly related to the backing paper used in vacuum aluminizing wine labels. When the old wine bottles are recycled for bubble labels, if the backing paper is broken easily, the aluminum will remain in the bottles, causing contamination of the contents. In addition, in the summer, consumers prefer to keep their beer in a refrigerator. The temperature difference between hot and cold causes the beer mark to condense with many drops of water. If the bottom paper is not waterproof, the flatness of the wine mark will be destroyed, thus destroying the beer. The overall perception of the subject.

In the long-term production practice, Qingdao Lima Dun summed up a lot of simple, practical vacuum aluminum coating paper detection methods. For example, in the treatment of backwater problems, the inspectors of Qingdao Lima Dun can judge whether the material has been treated with water only by naked eyes; in addition, as for the waterproof performance, a blistering experiment can be used to identify the aluminum plating. Whether the paper has water soaking, traces of yin. It is also this long-term accumulation of experience that enabled Qingdao Lima Dun's vacuum aluminum-plated paper printing products to be recognized and praised by more smokers, breweries and other user companies. (Meng Yanfei)

Second, the experience of acceptance of aluminum-plated paper printing products <br> Jiangsu Daya Danyang Printing Branch

Jiangsu Daya Danyang Printing Subsidiary has provided printing services for more than 10 cigarette factories. The main problem encountered in printing vacuum aluminum-plated paper is the low flatness of aluminum-plated paper, which is more complex than that of laminating cards and aluminum foils. There is still a certain gap between cards; there is also poor ductility, and the printed products are prone to burst when folded at 180°. After long-term exploration, Danyang Printing concluded a method for acceptance of finished products. That is to say, the formed product was folded 180 degrees forward three times, reverse folded three times, or folded 180 degrees in one direction five times. No problem was considered qualified, even if sent There will not be too much of a problem in the smoke factory inspection. Danyang Printing believes that aluminized paper is suitable for offset printing, gravure printing, screen printing, and full-page printing. There is no special requirement on the process, but there will be some influence on the brightness when special printing is performed on the surface of the aluminized paper.

A case study of aluminum-coated paper printing ink-- Jiangyin Unicom Sanbaolin Printing Co., Ltd.

When Jiangyin Unicom printed the "Redwood Tree" cigarette box of Xuzhou Cigarette Factory, there was a phenomenon of ink burst. Through careful research of production technicians, it was found that the material manufacturers were using aluminum film in the process of producing aluminum-coated paper. The glue used when paper is compounded creates a problem. After the material manufacturer adjusts the composition of the glue, the problem is solved.

Jiangyin Unicom will continue to increase the amount of aluminum-coated paper in the future, and the advantages of using vacuum aluminum-plated transfer paper are found in both environmental protection and cost reduction. At the same time, the vacuum aluminum-plated paper has a high degree of smoothness and is suitable for offset printing and gravure printing. The printing process is the same as the printing technology of composite gold and silver cards, but UV drying must be performed. (Yang Shan)