Direct Flexo Printing Process for Paper Bag Making

　　 paper bag making direct flexo printing process

　　 With the advancement of carton technology and packaging machinery, the application range of corrugated box packaging has become wider and wider. It can not only pack mechanical parts and electrical components, but also pack motorcycles, washing machines, refrigerators, pianos, etc. As the demand for packaging of commodities above 50 kg has risen sharply, the demand for heavy-duty corrugated packaging boxes such as five-layer, seven-layer, and nine-layer corrugated paper has also increased significantly.

　　 With the advancement of carton technology and packaging machinery, the application range of corrugated box packaging has become wider and wider. It can not only pack mechanical parts and electrical components, but also pack motorcycles, washing machines, refrigerators, pianos, etc. As the demand for packaging of commodities above 50 kg has risen sharply, the demand for heavy corrugated paper boxes such as five-layer, seven-layer, and nine-layer corrugated paper boxes has also risen significantly.

　　 The prosperity of the commodity economy and fierce market competition have promoted the improvement of the quality of product packaging, and beautifying packaging has become an important means of marketing and advertising products. The printing quality of corrugated boxes is increasingly being valued by commodity producers and consumers.

　　 corrugated carton box type structure, the international carton box type standard jointly formulated by the European Corrugated Box Manufacturers Federation (FEFCO) and the Swiss Cardboard Association (ASSCO).

　　 This standard is approved by the International Corrugated Case Association (Intenrational Corrugated Case Associa-tion) for international use.

　　 One, paper bag making direct flexo printing process

　　 (1) Advantages of making flexographic paper bags

　　 Corrugated box direct printing mostly uses flexographic printing. Flexo printing is a light pressing method, which can avoid crushing of paper bags: flexible plates are flexible, can compensate for unevenness of paper bags, and make the ink layer more uniform: water-based ink can be used for online printing. Therefore, flexo printing is the best printing method for corrugated boxes, which has reached a consensus at home and abroad.

　　 (2) Paper bag making flexo plate making process essentials

　　 original design

　　 (1) Avoid full-page printing: Because full-page printing requires high printing pressure, it will reduce the compressive strength of paper bags, so full-page printing should be avoided.

　　 (2) Avoid the band-shaped graphics with the same direction as the corrugation: because the printing pressure will crush the corrugation and cause the carton to break.

　　 (3) Minimize color registration: Practice has proved that the compressive strength of corrugated boxes after single-color printing is reduced by 6%-12%, and after three-color printing, it will be reduced by 17%-20%. Therefore, the number of color registrations should be minimized.

　　 (4) The text should not be too small: Because the text of 2em2 size, the viewer can hardly see it beyond 5m.