An acid, non-etching cleaner that provides the most effective removal of chromate conversion coating from copper laminate. LAYER CLEAN CR also removes soils such as fingerprints and oxides. Used prior to photoresist lamination, it reduces imaging defects by improving photoresist adhesion. LAYER CLEAN CR’s non-chelating, non-chloride formula cleans and conditions copper surfaces, and provides consistent high speed cleaning at low concentrations. It is effective in both spray and soak applications.
PreLam Cleaner is a cleaner/microetch/adhesion promoter for use on copper and other metals. It will give optimal resist adhesion both initially and during subsequent processing, where other chemicals can weaken the bond at the copper/photoresist interface. PreLam Cleaner yields a non-traditional looking panel with a bright orange color rather than a more typical matte pink.