Different printing processes will cause different effects. Depending on the printing plate, the quality of the ink is good or bad, and the quality of the ink squeegee may be printed, which may surprise us. Then the following focuses on understanding the difference between plastic printing and paper printing, so as to better understand printing and how to buy.
1. The basic principles of plastic printing and paper printing are the same
1. The art decoration design, plate-making equipment and plate-making process of color manuscripts are basically the same.
2. The structure, printing method and printing principle of the printing machine are the same. The multi-color rotogravure printing machine and the multi-color flexo rotary printing machine can be used for printing both plastic films and roll wrapping paper.
3. The principle of color is basically the same as the application in printing.
Second, the difference between plastic printing and paper printing
1. Different printed substrates
One is plastic film, the other is paper, and their physical and chemical properties are quite different. The surface of the paper has a certain thickness, has a good adsorption state and capillary effect, and the printing ink is easy to adhere to the paper surface. As long as the paper is spread flat in the room for a period of time before printing, and a static eliminator is installed on the printing machine, the static electricity can be used for printing. Plastic films are different. For example, polyethylene and polypropylene films, which are the most used in packaging, have high surface finish, low surface tension, strong chemical stability, and are not easy to accept the infiltration of ink. In addition, the plastic itself has antioxidant properties, which will affect Drying after plastic printing affects the adhesion of the ink layer to the film.
2. Ink cannot be used interchangeably
Paper printing and plastic printing are different due to the characteristics of the printing material, the drying method of the printing ink and the connecting material of the ink are different. Therefore, the ink of the printing paper cannot be used to print the plastic film, otherwise the conjunctiva cannot be dried, and it is easy to cause failures such as separation and qualitative change, causing unnecessary economic losses.
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