Quantification method and quantification device for accuracy of coating film edge

摘要

To provide a quantification method of accuracy of a coating film end part that makes it possible to multilaterally and objectively evaluate accuracy of an end part in a width direction of a coating film formed in a longitudinal direction on a base material.SOLUTION: A quantification method of accuracy of a coating film end part includes the steps of: obtaining an electronic image of a coating film 3 on a base material 2; extracting an image of an evaluation area 4 including a coating film end part 31 from the electronic image; obtaining an optical profile of a coating film 3, and an optical profile of an exposed surface of the base material 2 by analysis means 6; setting a reference straight line in almost parallel with a coating film end 32 inside the evaluation area 4, and obtaining an index of a size of unevenness by the analysis means 6 on the basis of a distance in the width direction between the reference straight line and the coating film end 32; and obtaining an index of smoothness of fine unevenness on the basis of an entire extention of the coating film end 32.SELECTED DRAWING: Figure 1