Effect of sodium chloride and food target properties on nonelectrostatic and electrostatic coating

摘要

Salts were coated on a variety of thick food targets. The best transfer efficiency, adhesion (>70%), and percent side coverage (100%) were obtained when small (<200μm) and cohesive (Hausner ratio>1.20) salt was used with electrostatic coating on targets with high a_w (>0.7), low resistivity (<9×10~8Ωm), and short charge decay time (<3.8s). Shape of salt also affected the coating performance; porous cube provided significantly better transfer efficiency and adhesion than flake salt on some targets. There was no significant effect of KCl content on coating performance.