Thickness Characteristics

An explanation of the meaning behind and the measurement method for the main physical property measured.


Unit µm
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.