ANTI-SCRATCH PERFORMANCE EVALUATING METHOD AND EVALUATING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an anti-scratch performance evaluating method and evaluating apparatus enabling the anti-scratch performance of an evaluation object when it is scratched while a pressing load is increased to be objectively and quantitatively evaluated and making possible accurate evaluation of the anti-scratch performance, with the extent of the scratch thereby made into consideration.SOLUTION: An anti-scratch performance evaluating method for a resin-made evaluation object P whose surface is textured comprises: a scratch making step of making a linear scratch K by scanning a chip 22 over a prescribed distance X while increasing a pressing load; a scratch luminosity measuring step of measuring luminosity Ln of light reflected from the scratch K irradiated with light; an evaluated value calculating step of calculating an evaluated luminosity value of the scratch K; a scratch making initial load calculating step of calculating the scratch making initial load; and an evaluation step of evaluating the anti-scratch performance of the evaluation object P on the basis of the evaluated luminosity value and the scratch making initial load.