Pad Plate

About pad plate of pad printer

    Pad printing machines, like other printing machines, use printing plates. At present, pad printing resin plates and steel plates are used more frequently. Pad printing resin plates are made by special resin plate making machines, and steel plates are mainly made by corrosion methods. It is reported that some laser marking machines can directly engrave steel plates, but the response in the market is not very mature. If the technology of laser engraving machines is mature in making steel plates, it will be the dawn of pad printing steel plates to get rid of complicated and environmentally friendly processes.
    The corrosion method of pad printing steel plate currently occupies a dominant position in the market. It has two important steps. One is to use a laser phototypesetting machine to make the film, and the second is to use the film to bond the steel plate for printing, and then use the corrosion method to make the film. Pad printing gravure, you can find related files on youtube video website or some professional websites.

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  • Most of pad printing and screen printing use Film to make plate;
  • When this film enter into laser output machine, Laser will exposure to words and drawing. the sensitive layer will be solid and other area keep its un-exposured state;
  • Exposured layer will be not remove and un-exposured layer will be remove with developing liquid;
  • Cover the film onto pad plate or screen plate. There are two areas to be made, one is open area, the other is closed.


  • Used by PM-310FL and PM-410FL Laser output film machine. Operating in dark room. It is formed that coating Photosensitive coating layer;
  • Widely used to output films of pad printing process and screen printing process.


  • Package size: 160*160*380mm;
  • Weight: 3.5kg;
  • CBM: 0.009


  • Shade, cooling and wentilate place;
  • Expiration date: 2 Years


  • Max Density : 4.5;
  • Width: 305mm; Length: 60m;
  • Thickness of PET base: 0.1mm;
  • Sensitization wavelength: 630-670NM


  • Roller shape, easily to cut to correct size;
  • Operating in dark room;
  • Nice planeness to set up even Drawing layer;
  • Very finess of Sensitive layer to set up halftone design;
  • High photosensibility and high Exposure latitude;
  • Rapid developing , well edge quality of words;
  • High contrast and red light, suitable for the image record of He Ne laser source
  • Base expansion and high stability.


  • Putting it on the enter of output machine;
  • Start the computer to let it enter.
  • Cutting it to fit size;


  • Please process it in dark room with safe light, only have red and yellow safe light.Storage︰ Store in the shady ,Obturation and ventilation place

     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. 
     2.Coating Emulsion
        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.
       4. Exposure
        Put the pad plate coated emulsion covered with a film on the glass table of PM-2840UVEPM-4050UVEPM-5060UVE UV exposure machine, setting exposure time ,and start the  UV exposure machine.
       5. Developing
        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.
       9.Measure Depth
        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;  
Use Method︰

  •  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 

Pad plate styles

   Water-washed pad printing plates and alcohol-washed pad printing plates have independent and obvious advantages. Resin plates are widely used in countries and companies that pay attention to environmental protection, because the entire plate-making process is harmless, and it is used for developing after exposure. Both water and alcohol can be discharged directly into the water circulation system without worrying about polluting the water body. The resin used in the resin version itself is also easy to degrade and will not produce chemically toxic components.
 The thin steel sheet is subjected to surface quenching treatment, and the hardness can reach 60 degrees. The thickness is between 0.3-0.5mm. Common fabrication methods include ferric chloride etching and laser engraving. The iron trichloride corrosion method has been used to make steel plates, but it is basically banned in developed countries, and the laser engraving method is a technology worth promoting. It does not require film sheets and is very environmentally friendly.
Both thick steel and roller pad printing plates are used for high-volume printing tasks.
  Those high-end users should understand that the excellent flatness and smoothness of the steel plate ground by a high-precision grinding machine will definitely bring superior performance to your printing tasks.
  Of course, the obvious disadvantage of thick steel and roller plates is that they are difficult to replace because they are heavy and not easy to move.

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