Printed on a plane, spherical surface and low. I engaged in screen printing technology 13 years and accumulated some experience. These experiences are introduced to the industry with the Comrades, for reference.

     1. Ink preparation

     The plant is commonly used by the Japanese Empire and Japanese ink; silk screen yielded a good result. It is said that Empire ink silk screen effects better, and Toyo Ink Gravure effective. Each silk screen ago from a small amount of ink on Screen, with diluent for Lean. If the dry weather or high temperature should be at the same time adding 709 slow dry agent or slow stem agent benzyl alcohol.

     Dilute tune the degree of concentration judgment: the extent to dense ink through screen after screen printing surface there is no better Netted or lampworking. Lean on silk to the extent of the Internet, with its own weight ink can achieve through mesh but not under the drip for the best. The fine printing lines, should be transferred dilute, the contrary, strong points should be stressed.

     2. Screen Selection

     The quality fiber cloth to Switzerland for the best. Its wire diameter uniform, accurate mesh few consistent quality silk stability. The use of plant products, the Silk City Murakami Japan also good.

     The plant selection mesh is 450 ~ 500 head. Thread, ink fineness high absorbability of poor printing should be chosen few high mesh Screen Instead, it should use the low number of mesh network version.

     When in the plate-making Graphic Screen on the location and size should be based Screen printing of the structure, size and printing of the position on the Graphic identified. If designed well, will affect the silk screen quality, and could not even silk screen. In addition, the same was printed on the illustrations, preferably with a Screen Printing. If divided into two to the Internet edition printing, silk screening processes more than passing rate will be reduced.

     3. Scraper choice

     The use of plant material for polyurethane scraper. The wear resistance of polyurethane rubber scraper, solvent resistance and elasticity, and so good. Its hardness choose 60 to 80 Shaw. Screen tension, surface roughness of a good print, should use the scraper high hardness. Conversely, low hardness should be used.

     In surface, low formation of spherical or poor (partially protruding) on the printing of the printer, it is not appropriate scraper width to narrow width.

     4. Screen positioning

     The use of plant material with metal fixtures, wood, 3-ply, transparent PVC film. If the positioning difficult Substrate size and small, should use metal production fixture.
     If Graphic Edge closer Substrate should be fixed in the next printing of a piece with the printer as high as the edge of the plane wood to avoid Graphic easily paste.

     Net from the general 1.0 ~ 2.5 mm. If Printing pictorial Netted easily paste or there should be transferred from the net.

     5. Silk screen technology

     High pressure scraping printed, the amount of ink, but Screen easy deformation, the pressure should not be so high scraping India. Scraping India speed often is 60 ~ 200 mm / s. Scraping India fast, a little ink, but they are blocking network. So easy to block network of ink, scratch and India should speed faster.

     Scraping India line as straight lines, curves and slash three. According to the printer of formation of the printing and graphics and text on the distribution of the situation to choose. Scraping India ink consumption and the long line of big, scraping Mexico ought to be more even layer of ink to scratch, after scraping India.

     This paper introduces the screen printing experience, not only apply to television塑料壳Substrate, but to other rigid塑料壳on screen printing.

     The most common screen printing quality problems for the missing characters and paste characters. Once this issue, or from the above five areas to find reasons to resolve.