Modification of Zepel/Acrylic Barrier Emulsion Pressure-Vacuum Application
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Zepel/Acrylic has been demonstrated to function as an effective ink barrier on four color dye-based ribbons. The usual way of creating a barrier on an impression fabric is to force the material into the fabric from one side while applying a vacuum suction from the other to insure complete coating of each fabric filament. Zepel/Acrylic barrier mixtures, however, cannot be applied in this way because the mixture contains 31% ethyl and isopropyl alcohols. In pilot lab trials, rapid evaporation of the alcohol caused immediate vacuum nozzle clogging. The alcohol also poses toxicity and flammability problems in a manufacturing environment necessitating solvent recovery equipment.