Plastic film ink adhesion is not good, how should I do?

Plastic film ink adhesion is not good, how should I do?

Plastic film is poor in ink quality: especially transparent advertisement film and packing film. The UV ink printed on the surface of the film material is easier to fall off than the UV ink printed on the surface of the paper, mainly because the surface tension of the film material is lower, and the ink can not firmly adhere to the surface of the film. In general, the surface tension of plastic film material must be more than 38mN/m, so as to be firmly integrated with UV ink.Solution: the film material factory, material supplier shall conduct corona and coating treatment on it, to increase its surface tension.

Compared with the two kinds of methods, corona treatment, low cost, poor stability, but the treatment effect, the corona treatment effect will gradually decrease with time, especially when the storage film material in a high humidity environment when corona treatment effect decreased faster. Therefore, in order to achieve good printing effect, on-line corona treatment of corona treated film material is recommended in actual printing process. Although the cost of coating treatment is higher, the treatment effect is stable, and the surface tension is not affected by time.

The coating cost is higher, suggestions from the formula solve performance solid ink film of the material itself, the domestic high-end brand Amy micro nano powder has developed an increased surface tension membrane material ST300 smooth powder, adding a certain amount of plastic film can not only reduce the cost and improve formula, multiple performance solid ink thin film materials, to help solve the problem of the plastics industry, such as opening, high temperature resistance, weatherability, transparency, abrasion resistance, which belongs to the national scientific research and new materials, plastics enterprises add suggestions.