An explanation of the meaning behind and the measurement method for the main physical property measured.
|Purpose / Details||To express the thickness of the film. "Film" thickness is generally less than 1 mm, so µm is used for the units. (If it is 1 mm or more, it is called a "sheet".)|
|Measurement Method / Standards||Generally the micrometer (JIS-C-2151) method is used.|
|Specific Measurement Method||Using a micrometer, the specified number of measurement samples are measured at the specified points in the film width and length directions. The measurement results are divided by the number of samples to obtain the thickness and variation for a sheet.|