Method of manufacturing prepreg
AssigneeMatsushita Electric Works, Ltd.
InventorYoshiyuki Kaji
Life of this patent
Estimating the term…
Abstract
A prepreg cutting method is provided that cuts prepreg without applying any processing, such as heating, to that part of prepreg other than the place to be cut. When prepreg formed by impregnating a base material with a resin and left to semi-harden is to be cut into a specified dimension, the surface of the prepreg is irradiated with a laser beam so that the resin of the irradiated portion is softened while the laser beam irradiating position is shifted on the prepreg, and the softened resin part is cut by a cutting blade. Because the cutting blade cuts the prepreg portion where the resin has softened, resin dust will not scatter.
Claims25
A method of cutting prepreg, which cuts a prepreg that has been formed by impregnating a base member with a resin and semi-cured into a predetermined size, comprising:
- directing a laser light beam onto a surface of said prepreg to soften the resin of the portion irradiated by the laser light beam, and
- cutting the softened portion of the resin with a cutting blade.
A prepreg cutting apparatus, that cuts prepreg formed by impregnating a base member with a resin and semi-curing the impregnated base member, comprising:
- a laser light source that emits a laser light beam that is directed onto a surface of the prepreg to soften the resin of the portion irradiated by the laser light beam, and a cutting instrument that cuts the softened portion of the resin with a cutting blade.
Dependencies are inferred from the claim text.