Is it flatness, or are there other nouns, such as the proper terminology such as plate shape tolerances?
If it is a thin aluminum foil below 30um, especially a two zero aluminum foil, it is generally not a plate type problem. It is studied in accordance with web handling
If the thickness of aluminum foil above 30um is generally studied, its plate shape is measured by I-unit
If the thickness of aluminum foil above 30um is generally studied, its plate shape is measured by I-unitIf it is a thin aluminum foil below 30um, especially a two zero aluminum foil, it is generally not a plate type problem. It is studied in accordance with web handling