Screen printing doctor blade holder - has difference angle between holder axis and rubber axis and has varying jaw lengths with anti-adhesive coating on jaw extension

摘要

A difference angle appertains between the doctor holder axis and the doctor rubber axis and the jaws have varying lengths. The extended jaw has an anti-adhesion coating in the extended part and reduces the sag of the doctor rubber. In this case, the effective printing angle is the holding angle plus the difference angle less the sag angle. For a full colour throughput the left side of the doctor holder is turned, whereby the extended jaw is no longer functional. In this case, the effective printing angle is the holding angle less the difference angle less the fuller sag angle. ADVANTAGE - Can produce a thin or thick layer of colour.