Water vapour transmission rate (WVTR) plastic films, laminates, coated papers and aluminium foils
Measurement is performed using the water vapor specific method (hydrolysis sensor or infrared sensor). Usually deviating from the standard as a double determination.
optimum: 2 DIN A 4 sheets without folds, creases or other damages
Standardprüfungen
WVTR film standard 23°C/ 85 % rel. humidity (electrolytical method) Test programm standard "Europe" with electrolytical method Norm: DIN EN ISO 15106-3
WVTR film standard 23°C/ 85 % rel. humidity (infrared method) Test programm standard "Europe" with infrared method Norm: DIN EN ISO 15106-2
WVTR standard 38°C/ 90 % rel. humidity (electrolytical method) Testing programm standard "tropical climate/ Asia/ USA" with electrolytical method Norm: DIN EN ISO 15106-3
WVTR film standard 38°C/ 90% rel. humidity (infrared method) Test programm standard "tropical climate/ Asia/ USA" with infrared method Norm: DIN EN ISO 15106-2