Patent ID: 9725353
Date: 2017-08-08
CPC Classifications: B23K,C03B

Claim:
1. A laser fusing method for a glass sheet, the laser fusing method comprising: cutting the glass sheet by irradiating the glass sheet with a laser from a front surface side thereof along a preset cutting line extending in a surface direction of the glass sheet; and jetting a shaping gas so as to form a parallel flow that is parallel along at least one of a front surface of the glass sheet and a back surface of the glass sheet, the parallel flow being in a direction that crosses an advancing direction of the cutting of the glass sheet and through an irradiation portion of the laser, a piece of the glass sheet formed by the cutting, which is positioned at a jetting source side of the shaping gas, to be a product and another piece of the glass sheet formed by the cutting, which is positioned at a jetting destination side of the shaping gas, to be a non-product; and forming a cutting end portion of the piece of the glass sheet to be the product into a smooth fire polished semi-cylindrical portion over an entire area of the cutting end portion as a result of the cutting and jetting steps.