| 摘要 |
PROBLEM TO BE SOLVED: To provide a processing method with high productivity.SOLUTION: A method for processing a workpiece (2) comprises the steps of: forming a water-soluble protective film (36) on a surface (2a) of the workpiece (water-soluble protective film forming step); forming a laser processing groove (44) by irradiating the surface of the workpiece with a laser beam (42) after performing the water-soluble protective film forming step (laser processing step); and cutting the workpiece in which the water-soluble protective film is formed with a cutting blade (48) along the laser processing groove of the workpiece while supplying cutting water to the cutting blade after performing the laser processing step (cutting step). |
