Patent ID: 8168030
Filing Date: 2012-05-01
Classification: B23K,H05K,Y10T

Abstract:
1. A method of manufacturing a laser processed part using an adhesive sheet for laser processing having at least an adhesive layer on a base material, with an extinction coefficient ratio less than 1, the extinction coefficient ratio being an extinction coefficient of adhesive sheet for laser processing at wavelength 532 nm divided by an extinction coefficient of a workpiece to be processed at wavelength 532 nm, wherein the base material is made of a resin without containing aromatic hydrocarbon group, the method comprising the steps of: selecting the adhesive sheet on the basis of the adhesive sheet possessing an extinction coefficient ratio of less than 1; adhering the adhesive layer of the adhesive sheet for laser processing to a laser beam emitting side of the workpiece; processing the workpiece by irradiating a laser beam at wavelength 532 nm and at a power output sufficient to cut through the entire workpiece, wherein the adhesive sheet is not cut; and removing the adhesive sheet for laser processing from the processed workpiece.