CUTTING METHOD FOR PREPREG

摘要

PROBLEM TO BE SOLVED: To provide a cutting method for prepreg which cuts the prepreg while preventing generation of cut chips without movement of irradiation point of laser light and a cutting blade and also prevents carbonization of a resin of a central part of a laser light irradiation point. SOLUTION: The cutting method for the prepreg 1 comprises irradiating the prepreg 1 with the laser light L in a fixed irradiation position 6 while feeding the prepreg 1, heating a part of the prepreg 1 resin irradiated with the laser light L and softening it, and cutting the softened part of the prepreg 1 resin with a cutting blade 2 while feeding the prepreg 1. An optical system 6 for leveling intensity variation of the laser light L emitted from a laser oscillator 4 is arranged to irradiate the prepreg 1 with the laser light L which passes through the optical system 6. COPYRIGHT: (C)2004,JPO