There are three kinds of pad plate: thick steel plate, thin steel plate, nylon resin plate. Making the pad plate is the first step to begin pad printing technology.
1. Output Film
According to the digital artworks provided by the customer,the films are output by an imagesetter (PM-310FL) Laser output machine .Also,you can ask expert the prepress bureau to make films for you, and most of films for pad printing process is positive.
Coating FUJI emulsion by PM-30TC turning coating machine,PM-40TC dipping coating machine or spraying coating machine.
Put the pad plate covered with emulsion into a drying closet PM-2030DC PM-4545DC .At the temperature 120℃ for 5-10 minutes.
Put the pad plate coated emulsion covered with a film on the glass table of PM-2840UVE, PM-4050UVE, PM-5060UVE UV exposure machine, setting exposure time ,and start the UV exposure machine.
Dip the pad plate into the jar full of FUJI developer liquid for several minutes till hidden image on the surface of emulsion is developed. Then blow it and remove water by compress air gun.
6.Etching by Hand
Use one brush dipped with etching liquid and brush the hidden image 3-5 times so that hidden image is completely displayed. Some plants don't have a etching machine, please continuously take a brush to brush for 30-50 seconds. Because of etching operation only by hand, correct depth of pad plate mostly relis on the operator's experience.
7.Etching by a Machine
For the precision etching and half-tone images,must use a spraying etching machine. Pad plate is put into an etching machine and is fixed by the magnet installed on the frame within PVC etching box. Set etching time and start the etching machine till the machine stop automatically.
8.Blowing and Drying
Take a compress air gun to blow the pad plate and make sure withou etching liquid onto the pad plate.
Standard depth is about 19-23 micron. Actual depth must be comply with the customer request. More etching time,more deep. Measure accurate depth with a depth measure meter.
Remove emulsion on the pad plate by Banana solvent.Clean it by clothes,then spray anti- rustiness onto it and put it into PA plastics bag. Pad plate has been completed.
Note: Put pad plate into pad printer and you will begin to pilot run. With the development of market, nylon resin pad plate is already getting more and more recognition because of its capability to reproduce half-tone and shadow graphics. Nylon resin plate need one magnet installed on the pad printer.
Film after the formation of latent image after exposure to water after developing and fixing of water freeze treatment. Ultimately form the image area and non-image area.
In the modern printing industry, copy of film making is all the printing program when one of the first, it is directly related to the printing quality. Therefore, gravure printing, offset printing, letterpress printing all of this as an important part of pre-press technology to treat.
Although the CTP technology are advancing rapidly, but in the plate-making technology, especially printing, silk screen, hot stamping field, still holds an important position.
Using PM-310FL film output machine film exposed film developing and fixing processing.
Photographic film output has been, you need water to develop water and fixing latent image freeze, the formation of the final film for the printing down the process of printing down.
Production Advantage ︰
Powder Package, easily for keeping;
- the developer of the preparation
Developer can prepare them by themselves can also buy ready-made packaging development powder. Developing powder is extremely easy to use package, usage is simple, become suitable for a small amount of flushing Gan Guangpian or print and images.
1) Prepare the developer of the water temperature is best maintained at 52 ℃. Temperature is too low, slow dissolving drugs, the temperature is too high, easy to make medicines chemical changes affect performance.
2) The developer of water must be clean, not to use water impurities. Contain too much iron, magnesium, aluminum, calcium in hard water should be boiled to soften; by polluted water, add alum to precipitate filtered.
3) The developer developing drugs affect the performance of dosage, so the dosage must be in accordance with the formula provided, it should not change.
4) deployment of liquid should be stirred properly to promote the dissolution of chemicals. Stirring time should not be too keen to avoid too much air dissolved in water, to promote oxidation not keep liquid.
5) The deployment of a good developer, and often there are a number of impurities, apply a clean gauze or filter paper, photographic material generated class to avoid points.
6） "Snapshot: that is to restore the silver film on the silver does not dissolve in order to prevent further exposure of this part of silver halide film image. Fixing time for hand-punching is no photographic film after partially transparent, plus double the time.
7） "washing: Fixing sticky film after the sodium thiosulfate and other chemicals, if not clean, the film will turn yellow failure. Hand punching usually running water 15 to 20 minutes is appropriate.
8）"dry: hand after punching the film should be dried and placed in a cool dry place for safekeeping.
Developer and fixation easy long-term exposure to air oxidation, should be installed in the brown bottle Gaiyan, placed in the shade, avoid sun exposure