Printing factory about machine glass screen printing technology improvement now seven points with organic glass processing products is more and more widely, the application scope of more and more is also high to the requirement of organic glass processing, especially the organic glass screen printing, organic glass processing manufacturers - for that
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> printing factory about machine glass screen printing technology improvement now seven points with organic glass processing the application range of the products is more and more widely, more and more is also high to the requirement of organic glass processing, especially the organic glass screen printing, it is a challenge for organic glass processing manufacturers, is also the opportunity, grasp the quality of organic glass screen printing technology, is an important organic glass factory, technical strength.
Organic glass screen printing process improvement at seven points have the following: 1.
Perfect image copy is a basic requirement is transparent Yang figure of film quality is better, the outlets to edges and opaque.
Color separation film and the use of printing ink with the same quality standard.
Yang figure film on glass plate, then the exposure, the good screen on Yang figure film, tense and axis parallel with the images.
If a turtle grain, rotating screen to right or left, until the turtle lines disappear, turn 7 ° commonly can.
The area of turtle grain on the direction of the wire net wire and wire mesh intersections.
The main color and dark color cause the problem of turtle grain more.
For four-color printing, should use the same size and stability of aluminium net frame, the types and models of net frame is the same screen.
Use of dyeing silk screen helps eliminate turtle grain, tension is uniform in all parts of the screen, and four color printing 4 piece of screen at the same stretch mesh tension.
Printing factory grinding good scraping blade is vital for high quality printing, shore hardness of the blade is about 70.
Scraping blade should be set at 75 ° Angle, if too flat to the scraping blade Angle adjustable printing image may be blurred, if the Angle adjustable too steep, the risk of screen printing image deformation is big.
Back to the ink knife should not be too low, if so, there are too much ink film version, print is easy to blur and smearing.
Mesh image with high viscosity of ink, as it grows fine screen need color ink.
Use of UV ink, mesh adjusted Yang picture tonal range should be chosen to be 5% ~ 80%, the stencil shore hardness should be 75.
In order to control the UV ink in color dieyin without smearing, Suggestions according to the green, magenta, yellow, black printing color sequence.
When using UV printing ink, screen thickness was less than 5 microns.