Discussion on Production Technology of Preprinted Beer Box

China is a big country for beer production. After the packaging of beer has undergone a certain development process, almost all beer packaging on the market is produced by using preprinting technology. Beer boxes printed directly on single corrugated cardboard are almost always on the market. Hard to see. The reason why preprinted beer boxes are widely used is that they have great advantages in terms of process. The first is the printing quality has been greatly improved, the printing layer is rich, the picture is clear, the layout of the ink color is high, the color is bright, the overprint is accurate, the product copy effect is better; secondly, the layout printing structure and printing adaptability are more extensive, not only Printable line version, field version, but also can print fine textured version or a variety of complex printing layout; The third is the high accuracy of the cardboard box die-cutting, cartons edge neat and clean; fourth is the compressive strength of the carton It will not be damaged. These are the technical and quality effects that traditional corrugated box production processes cannot achieve. Therefore, correct understanding and selection of suitable preprinting process and good preprinting production process technology can effectively improve the product quality and production efficiency of the beer box and satisfy the customer's use requirements.

The Type, Characteristics and Reasonable Selection of Beer Box Preprinting Technology

Flexible printing (embossing), gravure printing and offset printing (offset printing) are the three major printing processes in China. Their machine structures are varied. There are single-color and two-color, four-color, five-color and six-color printing units. The paper printing format also has a flat paper structure; organic groupings and satellites are also stacked. Different machine structures, printing process forms, ink characteristics, printing process effects, printing costs, etc. are also completely different. Flexographic printing has less equipment investment, and the use of water-based ink is also more environmentally friendly. This production process is easy to operate, and the inking structure is simple and easy to control accurately. As the ink coating is relatively stable, there is little phenomenon of printing color difference. It also has the advantages of fast plate making speed, high printing speed, wide printing adaptability, and good surface imprint on rough surfaced cardboard. It is suitable for printing on-site and line layout. Because the quality of the fine textured printing products is not as good as the offset printing and gravure printing processes. The gravure printing process uses volatile solvent-based inks. The inking device has a squeegee device. The ink layer is thick and uniform. The print product has a rich gradation and strong texture. The print ink has a fast drying speed. In addition, it has a printing ink color quality. It is relatively stable, it is not easy to produce printing color difference phenomenon, the printing speed of the machine is fast, the printing plate printing rate is extremely high, it is more suitable for printing the printing matter of the large quantity, and help to reduce the production cost. However, the high investment in gravure printing equipment and the relatively high cost of plate making are also cumbersome for the plate changing operation, and there are also certain problems of pollution. The printing process uses the principles of oil and water phase exclusion to achieve printing. The printed image on the printing plate is first printed on the surface of the blanket, and the imprinting on the rubber is transferred to the printed sheet through indentation, which is indirect printing. Printing process and plate making are convenient, both in the field version and in the line version, as well as in the fine textured printing version. The printing reproduction effect is good. The printing price is relatively cheap. However, the printing plate printing rate is far lower than the gravure printing. , And multi-color overprinted products are prone to print color phenomenon. According to the characteristics of the product and the actual situation of the factory, choosing the appropriate printing process is an important way to improve the quality and economic benefits of the pre-printed beer box. In general, products with a small print area, a simple layout, and a partial text that need to be frequently changed or need to be reprinted many times can be printed using a flexographic process. Fine print products, large layouts with graphic printing areas, and products with a small number of prints or about 100,000 sheets per batch can all be printed using the offset printing process. Large quantities of printed products, long-term layout, large layout and fine and complicated products can be printed by gravure printing. A product that is not particularly large in quantity may be printed using a sheet-fed printing press. A particularly large number of products may be printed using a high-speed rotary press.

Some Understanding and Control of Preprinted Whiteboard Quality

Pre-printed cardboard boxes are now printed on one-side coated whiteboard paper. However, there are certain differences in the quality of single-coated whiteboard paper produced by different grades, different quantities, and different manufacturers, and the impact on the adaptability and quality of printing is relatively large. The technical specifications of whiteboard paper, which usually affect the quality of carton, are: tightness, quantitative, transverse stiffness, dust degree, brightness, surface roughness of printing, glossiness of printing, smoothness, ink absorption, strength of printing surface and water absorption, etc. Among them, the tightness affects the folding endurance of the carton flap, so it can not be too high; the quantitative and lateral stiffness affect or determine the accuracy of high-speed printing, positioning, and the strength of the carton; dust, brightness, printing surface roughness , printing glossiness, smoothness, and ink absorbability determine the quality of printing ink, layout definition, wear resistance of the ink layer, and the quality of coating and calendering; the strength of the printing surface affects the resistance of the whiteboard paper. , Lint and anti-foaming, peeling performance; and water absorption, printing overlay accuracy and moisture resistance of the carton have a certain impact.