| 摘要 |
PROBLEM TO BE SOLVED: To determine whether a plate-like work cracks in grinding, and the plate and cause thereof.SOLUTION: A peeling tape 5 is stuck on a protective tape T stuck on a plate-like work W having been ground, the protective tape T is peeled off the plate-like work W together with the peeling tape 5, and it is determined whether the plate-like work W has a crack 31 from a rugged shape of a corresponding trace 30 transferred to a pressure-sensitive adhesive T2 of the protective tape T. |
