Method for printing plastic film through offset printing press, finished product and product

Abstract

The invention discloses a method for printing a plastic film through an offset printing press, a finished product and a product. Firstly, roll paper and a plastic film roll are fed onto an adhesive rolling machine or an adhesive spraying machine to complete adhering of the roll paper and the plastic film roll; then, flattening, airing and transverse cutting are performed to form to-be-printed paper with the plastic film on one face in a one-piece state; next, the to-be-printed paper is fed onto the offset printing press to complete printing of the face of the roll paper or the plastic film roll, so that finished product one-face film covering paper with one-face printing is obtained; finally, the finished product one-face film covering paper is used for manufacturing a needed environmentally-friendly packaging bag or packaging box. In this way, the plastic film or the paper covered with the plastic film is fed onto the offset printing press to be printed, the problem is solved that inthe prior art, gravure is solely adopted for a soft plastic film, and the soft plastic film can not be fed onto the offset printing press, and the method has the advantages that costs are low, environmental protection is realized, printing speed is high, efficiency is high, color rendition is good, and a life-like effect is realized; the mode of plastic packaging is enriched, the grade of packaging is increased, and the requirement for really sustainable, healthy and environmentally friendly development is met.

Description

technical field [0001] The invention relates to a printing method, in particular to a method for printing a plastic film by using an offset printing machine, a finished product and a product, and belongs to the field of printing processing. Background technique [0002] With the progress of society and the continuous improvement of people's appreciation level and use requirements, higher requirements are put forward for various products used in life and work. Especially with the enhancement of environmental protection awareness, the environmental protection performance of products is increasingly affected. Everyone's attention and favor. [0003] As a packaging product, packaging bags are widely used in all aspects of our lives, among which plastic bags are the main ones, such as various food packaging bags, clothing packaging bags, sealed bags and various waterproof packaging bags, etc. Although they are easy to use and process , but affected by the material and thicknes...

AI Technical Summary

Problems solved by technology

[0005] Due to the aesthetic requirements of packaging products, the existing packaging film mainly adopts gravure printing machine for rapid printing in roll state in the printing process. Print some simple patterns, but the effect is poor and the grade is low, especially when used in the packaging of various products, the thinner characteristics of the plastic film make it unusable in many products

[0006] Offset printing speed is fast, the color is good, and the technology is mature. It is the main printing method in today's society. However, when printing soft, thin plastic film in roll state, the plastic film cannot be printed directly on the machine, and because of the roll state Unable to meet the printing requirements of offset presses for sheet-fed printing, making it a difficult problem for offset presses to print plastic films, which is the problem that the present invention intends to solve