ULTRASONIC PROCESSING METHOD AND APPARATUS IN RESIN PART FOR GLASSES

摘要

PROBLEM TO BE SOLVED: To instantaneously and inexpensively provide a three-dimensional fine pattern or character on the surface of a resin part for glasses. SOLUTION: A resin part 3 is formed into a desired shape to be held by a holding means 7 and the upper mold 1 having a decorative pattern part connected to an ultrasonic generator 2 is brought into contact with the resin surface while ultrasonically vibrated to form the decorative pattern on the resin surface as a three-dimensional fine pattern or character.