The basis for issuing the label “PROOFED BARRIER®” is a test procedure for evaluating the effectiveness and durability of the implemented odour barrier. The procedure has been developed in co-operation with and managed by Fraunhofer Instituts Verfahrenstechnik und Verpackung in Freising (IVV).
By means of complex and exhaustive lab-examinations the effectiveness of the odour barrier is tested and defined minimum requirements have to be met. Thereafter, the actual production procedure is validated by the survey of the manufacturers’ production facilities and internal quality assurance. The manufacturers undergo a voluntary and regular external quality control by IVV.
After successful performance the Quality Committee of QgH issues the label “PROOFED BARRIER®”.
From this time on the manufacturer is entitled to mark those odour barrier tested products with the “PROOFED BARRIER®” seal of apparoval.