Patent ID: 6312758
Filing Date: 2001-11-06
Classification: B05C,B05D,G11B

Abstract:
A coating method for extruding and applying an organic solvent from a slit of an extrusion die onto a continuous traveling support prior to preparation of a magnetic tape by coating the support with a paint, the method comprising the steps of:moving the support downward relative to the die and horizontal,setting a spacing between walls of the slit to not greater than 50 .mu.m,setting a gap between the support and the extrusion die to 0.5 mm,setting an extrusion speed of the organic solvent being positively coated from the slit onto the support to not lower than 2.5 m/sec,extruding the organic solvent through the slit and onto the traveling support without causing the organic solvent to contact a distal end surface of the extrusion die, said distal end surface having an upper and lower lip and facing the support wherein said slit is formed between said upper and lower lips, said upper and lower lips being equally spaced from said support,wherein said upper and lower lips form a flat surface in one plane which extends parallel to the support, and coating the solvent being coated on the support only by the kinetic energy of extruded solvent.