The advantages are obvious: greatly reduce the cost; There is no harmful gas that is easy to volatilize and permeate in the production to ensure safety; Easy to recycle, resulting in waste, so less than half the pressure, it can easily make it not "snowflake", so there is no need to wipe powder。
In the application, in fact, as early as 20 years ago, there was a PE extrusion composite of web paper (gravure printing) on the market, but the drawback of extrusion composite is that it can not compound the sheet paper and can not do the composite of subfilm and laser film. Therefore, this technology is only a technological innovation of the existing PE film on the market. Although it is an innovation, it has carried on a succession and continuation of the laminating market. In the post-press process of the printing and packaging industry, the film enhances the brightness and water resistance of the printed matter. It provides a beautiful visual effect for people's life. With the emergence of various advanced technologies, advanced equipment, and advanced glue, post-press laminating has appeared：
A、The disposal speed is fast, attributed to the fastest way to dispose of the surface of the paper after printing。
B、The equipment is simple and cheap, the cold laminating machine is cheap, and the simple hand cold laminating machine is also available;
C、A variety of surface effects, cold lamination film varieties are rich and diverse, in addition to the points of highlight and matte, there are what scrub, laser, gold powder, etc., can make the surface of the paper after disposal more diversified。
D、Strong adaptability, the paper after printing is wide, narrow, long, short, all come。
E、The quality of the cold laminating film is general, and the distribution share of the mixture and thinning water must be strictly carried out according to the requirements of the film and the adhesive, otherwise it will also form a weak bond。
Thin film
Because the essence of the film is to use adhesives to bond the printed product and the plastic film together, the quality of the film is not only related to the nature of the adhesive, but also has a close relationship with the external function of the plastic film. Improving the surface cleanliness of the plastic film, improving the crystallinity of its surface, improving the cohesion strength of the outer surface or removing the weak outer surface can be useful to improve the quality of the film. In addition, because the film is subjected to the effect of mechanical force in the process of laminating, it is necessary to have a certain mechanical strength and flexibility, if the film is too soft, it is easy to fold in the process of compression. 1Control of production operations
When pasting color printing face paper is thin and curly, the speed of the machine can not be opened too fast, when loading face paper and corrugated board, their relative positions should be aligned, so as to avoid bias error due to the positioning of the paper, resulting in incorrect lateral pasting, in order to ensure that the position of the face paper and corrugated board pasting is accurate, the production speed of the machine should be reasonable according to the characteristics of the face paper; When loading paper, the relative position of the face paper and corrugated cardboard should be aligned; The travel of the upper and lower chain must be accurate; After the upper and lower paper alignment, the paper stop limit device of the paper stacking table should be fixed。
