Composite packaging film printing material effect on the quality

in the flexible packaging industry, composite packaging film has good flexibility, moisture, oxygen insulation, shading, the water resistance, antistatic, pumping air into vacuum state, can be color printing and other advantages, the application can greatly improve the comprehensive performance of packaging products.

printing process is crucial to the production of composite packaging film, packaging products in the printing is a reflection of enterprise marketing, can be used to improve enterprise well-knownness, the printed graphic is not clear in the actual production is one of the common composite packaging film printing problems.

in a composite packaging film printing, the main applications of will have an impact on printing quality of the material with printing materials, printing ink, solvents and rubber roller, etc.

among them, the composite packaging film printing when the so-called substrates is refers to the plastic, paper, aluminized paper and aluminum foil, etc. In printing, such as aluminum foil material surface processing is undeserved, too much oil will cause transfer of ink performance, so as to make the printing graphic is not clear; And aluminized paper material aluminum plating effect is bad, the surface is uneven, printed products can produce a lot of bright spots, caused by unclear.

and printing ink viscosity, degree of fineness, yield value, thixotropy, liquidity, adhesion quality indexes such as any of the items do not conform to the requirements of the printing, will affect the ink transfer on substrates, resulting in print graphic is not clear. In addition, too much impurity content in the printing ink can affect print graphic clarity. As a result, the old machine ink, should be filtered, but should also add a certain amount of new Mexico, when necessary a new ink for all.

in addition, attention should be paid to the purity of solvent when the composite packaging film printing, once the low purity, contain too much fat, or water, will damage the dissolution of printing ink, cause the printing graphic not clear, not full; Plate cylinder line the number of how many, mesh point shape and depth, the quality of the chromium plating layer, the pros and cons of surface polishing treatment in a composite packaging film gravure, will directly affect the cave in web printing ink transfer rate. Printing ink transfer rate is low, the graphic is not clear, not full.