Patent ID: 6266836
Filing Date: 2001-07-31
Classification: B08B,D06B

Abstract:
A process for continuous ultrasonic washing of solid materials arranged in the form of sheets, strips, bands or layers having a large surface, and substantially unidimensional materials grouped together to form a band having a large surface, in a liquid medium, said process comprising:(a) wetting surfaces of a material to be cleaned,(b) eliminating dirt or contaminating substances from the material to obtain a cleaned material, and(c) rinsing and drying the cleaned material,wherein step (a) includes subjecting the material to be cleaned to a wetting method selected from at least one of (i) submersion in a fine layer of liquid and (ii) applying a fine layer of liquid, andwherein step (b) includes placing the material to be cleaned in approximate contact with at least one vibrating plate, so that the liquid is subjected to cavitation by said at least one vibrating plate, and said at least one vibrating plate is flexurally vibrated at a frequency corresponding to one resonant mode thereof, said frequency being selected from one of high sonic frequencies and ultrasonic frequencies.