Wide format screenprint

PROBLEM

Static charges on substrates during processing can result in: 

• Separation of sheets on infeed stack 

• Static charges are created by the friction between the squeegee and the silk screen. The static charges can be seen in the print and sheet handling during printing as:- 

• Pin holes in block colour 

• Print edges being undefined 

• Ink bridging between the substrate and the screen leaving ink tags 

• Substrate being reattracted to the screen on separation contaminating the screen with wet ink 

• Stacking issues on sheet delivery 

SOLUTION

Sheet separators neutralise the static charges between the sheets on the infeed stack. 

Mounting a Hyperion bars between driers and screen print stations overcomes print defects and sheet handling issues. 

Controlling static charges as the sheets slide across the delivery stack, overcomes stacking issues.