| Q: How do multi-color overlay positioning? A: To meet | | | | the actual operation, the scraping and India are |
| the multi-color overlay of the overlay accuracy, the | | | | greater than 45 ° angle of view, and some even up |
| Print The key is to master the positioning method. | | | | to 65 ~ 80 ° angle, used angle 75 °. 4. Scraper |
| Commonly used in multi-color printing with four kinds | | | | pressure and ink volume control: increased pressure |
| of orientation. Aside positioning method is suitable for | | | | scraping India, India ink leakage thickness increases, |
| printing straight edge workpiece; hole location in India | | | | mechanical scraping India, specialized mechanical |
| for high-precision parts of the same make-up graphic | | | | scraper pressure control adjustment. Hand-scraping |
| print; coincidence locating suitable transparent material | | | | experience of India depends mainly on the printing, |
| process printing; trim positioning method is suitable | | | | the pressure is too large thick ink, halftone shadows |
| for shaped parts of the nested printing. Screening in | | | | darken level, 50% of the network take the angle of |
| the four-color printing, whether mechanical or manual | | | | serious, 80% of the network into the field. Pressure |
| printing printing, required positioning accuracy error is | | | | is too small, ink thin, dark tone levels to reproduce, |
| zero. In the printing business requirements can select | | | | and high-profile loss of a small network. Only |
| the appropriate positioning method. Q: Screen from | | | | moderate pressure, the whole impression straight line, |
| the tension and how to determine the net? A: | | | | the pressure line to print out the color balance, levels |
| Screen Tension great influence on the transmittance | | | | of rich, high-quality print. Q: how does the ink film |
| of the ink, such as 25N/cm under tension, in a small | | | | thickness? A: The screen printing of the ink film |
| region of high optical network print it out. The tension | | | | thickness for the web plate thickness of 1 / 3 to 1 / |
| increased to 5 ~ 10N/cm, the precise locations can | | | | 4. The size of the ink film thickness of 5 by a major |
| be printed. By increased net tension away from the | | | | factor in screen printing (screen, scraper, ink, |
| screen to improve the method is not desirable. | | | | substrate material, the performance of network |
| Increase the net increase from the screen with | | | | printer) and 5 large variables (scraping Indian point of |
| tension effect, but increased net spacing, resulting | | | | view, network distance, print pressure, print speed |
| scraper must increase the pressure, print outlets will | | | | scratch , ink viscosity) of the proper operation and |
| increase. Therefore, distance can not be used to | | | | high quality materials used by the decision. In the |
| increase network method to improve the screen | | | | actual printing, to increase 3 to 4 times the ink film |
| tension, should set the correct time in stretching the | | | | thickness, it is up to increase the film thickness of |
| surface tension. Q: halftone screen in the scraper to | | | | the plate to achieve. If required thickness of 25 m ink |
| grasp? A: 1. Scraper role: the size of the printed ink, | | | | printing, the network version of the film thickness |
| the pressure not only depends on the scraper, but | | | | should be set to 75 ~ 100 m. Q: How to adjust the |
| also on the layout of scraper and scrape Indian point | | | | installed version and the press? A: The installed |
| of view, scraper hardness, scratch print speed, | | | | version installed according to the order of printed |
| scraper blade the shape. Japanese friends say, must | | | | color version, determining the printing position, for |
| have 3 years to master kung fu scraper technology | | | | debugging. 1. Mechanical adjustment: adjust the |
| to illustrate the importance of technology to master | | | | printing press, on the version. Line to find good rules |
| scraping India. 2. Scraper blade shape: the shape of | | | | to determine the network distance. Network from |
| the scraper blade 7 different kinds, commonly used in | | | | the general requirements to determine accurately, in |
| well-mouth, and round mouth. Fabric Printing | | | | order to achieve good overlay accuracy, network |
| Multi-round exit scraper. 3. Scraping Indian point of | | | | distance to be lower, 3 ~ 4mm or so, small Network |
| view: theoretically, the best angle of 45 °, scraper | | | | box Set 2 ~ 3mm, large format can be set higher, 5 |
| blade and cover the minimum contact area. However, | | | | ~ 6mm. |