Plastic Gravure FAQ

Cause Solution 1, ripple a, printing plate is too deep.
b. Low ink viscosity or excessive amount of release agent. a. Control plate depth during plate making.
b, control the ink viscosity.
c, using the wind or adjust the blade angle. 2, bite color a, ink slow dry.
b. The pressure of the second color is too high, printing is too fast and the viscosity is too high. a. Add a quick-drying solvent to the first color to increase the amount of hot air.
b. Reduce the pressure in the second color.
c. Reduce the viscosity of the second color ink and slow down the printing speed. 3, adhesion (commonly known as anti-adhesion) a, slow-drying solvent (especially toluene contains volatile matter, smell odor).
b. During the printing process, the rewinding pressure is too large and the stacking pressure is too large after printing (especially in high-temperature weather).
c. The temperature of hot air that is dried in printing is too high, generally it should not exceed 40-50 (if special requirements should also be added before cold wind blowing cold wind to reduce the film temperature), plus moisture (relative humidity greater than 90% or more ) Make the ink not dry completely.
D. The electronic processing is too large (standard 38 Dyne has already met the printing requirements). The single-sided printing but the film is double-sided electronic processing, or the local treatment is too strong. a, replace the quick-drying and high purity solvent.
b. Adjust the winding tension so that the winding and pulling are synchronized. The stacking of the prints cannot be too high or the heavy objects are stacked on the surface.
C. The ambient temperature of the printing place and the finished product warehouse should not be too high and there should be no heat source and direct sunlight.
D, single-sided printing without double-sided electronic processing. 4, the picture from the end of a, scraper pressure is small, the blade is too soft, the plate is too thick on the four sides to form a thicker ink layer.
b, oil viscosity, impurities.
c. Insufficient printing speed generates static electricity. a. Increase the knife pressure and replace hard blades.
b. Reduce the viscosity of the ink and filter the ink.
c. Install a static eliminator.