6630/6630A film polyester / polyester neo-fhighte laminate sùbailte sùbailte (DMD), ris an canar cuideachd pàipear insulation sùbailte sùbailte B-clas DMD, is e laminate sùbailte trì-fhilleadh a th ’ann anns a bheil gach taobh de fhilm polyester (M) ceangailte le aon shreath de stuth neo-fhighte polyester (D). Is e an aghaidh teirmeach Clas B.