An explanation of the meaning behind and the measurement method for the main physical properties measured.
Rate of Dimensional Change
|Purpose / Details||A numerical value expressing to what extent dimensions change when the film is heated. Dimensional changes greatly affect the conditions when being processed by the customer, and so this characteristic must be stable.|
|Measurement Method / Standards||In accordance with JIS-C-2151 and ASTMDD-1204. PET film for industrial materials is often measured by heating at 150°C for 30 minutes or 190°C for 30 minutes.|
|Specific Measurement Method||
Lo: Sample length before test, L: Sample length after test