How Should I Dry Screen Emulsions?

Emulsions must be throughly dried for optimum exposure. Springtime's high humidity is just around the corner creating possible difficulties in stencil making. Thorough drying of the emulsion coating is essential for maintaining exposure speed and producing durable stencils.

Here are tips for accelerating emulsion drying speeds:

• Use a drying cabinet. This will limit dust and minimize fogging due to exposure to stray light.
• Dry emulsions at temperatures below 95° F (35° C). Higher temperatures will cause the Diazo to react and possibly fog screens.
• Good ventilation or a dehumidifier will reduce moisture buildup, resulting in a drier emulsion coating and reduced drying times.
• Dry the coated screen in the printing position (squeegee side up) to maintain stencil build.