This is the cast grid model of MAC FOP (Fixed Orifice Paster.) It utilizes a vacuum or mechanical feeder to feed the grids into the MAC FOP. Drive rolls then push the grids between the top and bottom sides of the pasting orifice. Precisely casted and plenished FOP compatible grids are required. Each MAC FOP uses a variable speed independently powered paste dispensing hopper featuring orifice plate type tooling (no trowel roll.) Automatic hold-down clamps secure the hopper to the paster
without operator attention. All new MAC Pasters come with a MAC Thick Wall Hopper which is an improved design with new walls and paddle assemblies. Finish rolls have a separate drive to keep the strip properly tensioned between the paste hopper and the finish rolls. The MAC FOP allows pastes cast grids with top and bottom coverage while achieving tight tolerances and high quality.