BELT-LIKE GLASS FILM QUALITY INSPECTION METHOD AND GLASS ROLL

• Main Authors: MITSUGI KAORU, NOGUCHI KAZUYA
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2019
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

In order to inspect the quality of a cut belt-like glass film 4 by cutting a belt-like glass film 2 along the longitudinal direction and evaluating the linearity of an edge 3 formed as a result of thecutting, this method executes: an imaging step for separately imaging multiple segments of the edge 3; a linear approximation step for calculating an approximate straight line 18 of the edge 3 from aplurality of mutually different points 17 on the edge 3 for each of a plurality of images 19 acquired in the imaging step; a variation calculation step for calculating a variation value of the points17 with the approximate straight line 18 used as a reference; and an evaluation step for evaluating the linearity of the edge 3 on the basis of a plurality of variation values corresponding to the respective images 19. 一种带状玻璃膜的品质检查方法以及玻璃卷筒，将带状玻璃膜(2)沿着长度方向切断，对伴随着切断而形成的端边(3)的直线度进行评价，从而检查切断后的带状玻璃膜(4)的品质，此时执行如下工序：拍摄工序，将端边(3)分成多个区间并进行拍摄；直线近似工序，对于由拍摄工序得到的多个图像(19)的各个图像，根据端边(3)上的彼此不同的多个点(17)来求取端边(3)的近似直线(18)，所述偏差求取工序，将近似直线(18)作为基准