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Screening

One of the more artistic processes in a PCB manufacturing facility is the application of Indent layers, also known as screening. 

Silkscreen is a layer of ink traces used to identify components, test points, parts of the PCB, warning symbols, logos and marks etc. This silkscreen is usually applied on the component side; however using silkscreen on the solder side is also not uncommon. But this may increase the cost. Essentially a detailed PCB silkscreen can help both the manufacturer and the engineer to locate and identify all the components.

The ink is a non-conductive epoxy ink. The ink used for these markings is highly formulated. The standard colors we normally see are black, white and yellow. PCB software also uses standard fonts in silkscreen layers but you can choose other fonts from the system too. For traditional silk-screening you require a polyester screen stretched on aluminum frames, a laser photo plotter, spray developer and curing ovens.

  • Spray Booth, Circuit Tech
  • Screen Table, Elite, 2 ea.
  • Screening Press, Screen Primers
  • Screen Exposure, Douthitt, Mod 3002S
  • LPI Curtain Coater, Mod LGW/200-45-2
  • Oven, Small, Grieve, Mod AB-500
  • Screening Table, Elite-2
  • Oven, Small, Grieve, Mod 343
  • Oven, Electric, Blue M, Mod DC-1406G-2
  • LPI Curtain Coater, Mod LGW/200-45-2
  • Incl. Dryer Mod Truf/600-45
  • Incl. 2 Spike Stackers Mod SC/5-70
  • Oven, Blue M, Mod POM7-1406G-4
  • Oven, Blue M, Mod FM-166GX
  • Oven, Bassi, Thermo-matrix 2.0, Mod 2727-2
  • Oven, Blue M, Model POM7-1406G-4, 650F, 480V
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