What Viscosity is Suitable for Silicone Used in Screen Printing?

The viscosity range of silicone for screen printing is usually between 20,000 and 700,000 mPa·s (at 20°C). The specific suitable viscosity depends on various factors, such as the printing method, substrate material, and pattern definition.

For manual table screen printing, independent printing machine screen printing, and ribbon machine printing, when printing on substrates like clothing, socks, hats, and ribbons:

When the mixing ratio of Component A to Component B is 9:1, a viscosity of 60,000 - 80,000 mPa·s is generally suitable.

When the mixing ratio of Component A to Component B is 10:1, a viscosity ranging from 100,000 to 180,000 mPa·s is more appropriate.

For scenarios requiring fine printing (e.g., printing small text, thin lines, or complex patterns), silicone with lower viscosity is usually selected. This allows it to pass through the screen mesh more smoothly, resulting in a clear printing effect. For printing that requires a higher sense of three - dimensionality and a thicker silicone layer, the viscosity of the silicone can be appropriately increased.