Patent ID: 9643221
Date: 2017-05-09
CPC Classifications: B08B,C03C

Claim:
1. An apparatus for cleaning a rigid substrate having an adhesive adhering to a surface thereof, the apparatus comprising: a first cleaning liquid tank for cleaning a rigid substrate having an adhesive adhering to a surface thereof, the first cleaning liquid tank contains a first cleaning liquid including an aromatic alcohol at 25 to 60° C. and being equipped with an ultrasonic oscillator; a second cleaning liquid tank for rinsing off the first cleaning liquid adhering to the rigid substrate, the second cleaning liquid tank being installed downstream of the first cleaning liquid tank, the second cleaning liquid tank contains a second cleaning liquid including a glycol ether at 25 to 60° C., and being equipped with an ultrasonic oscillator; and a water washing chamber for rinsing off the second and first cleaning liquid adhering to the rigid substrate with water, the chamber being installed downstream of the second cleaning liquid tank, and wherein the first cleaning liquid includes of benzyl alcohol, water, and sodium xylenesulfonate-based surfactant, and wherein the second cleaning liquid includes diethylene glycol monobutyl ether, polyoxyethylene lauryl phenyl ether, and water, or of diethylene glycol monobutyl ether, pentaethylene glycol monododecyl ether, polyoxyethylene lauryl amine, and water.