CLEANING METHOD

摘要

PURPOSE: To obtain a cleaning method which can readily remove flux after soldering and a hot-melt adhesive after polishing and cutting steps from various machines and parts and can reduce industrial wastes generated in a cleaning step. CONSTITUTION: Cleaning is performed by using a cleaning fluid comprising a mixture of a water-soluble glycol ether compound (A) selected from the group consisting of 1-4C aliphatic alcohol/ethylene oxide (2mol) adducts and 1-2C aliphatic alcohol/propylene oxide (2mol) adducts and an 11-13C paraffinic hydrocarbon (B), with a difference in the average boiling point thereof being±10 deg.C at 760mmHg, at a weight ratio of component A to component B of (50 to 90):(50 to 10). The fluid after cleaning is regenerated by distillation and reused.