6640 Polyester film/polyaramide fiber paper flexible laminate (NMN) ndi mapepala atatu osanjikiza osakanikirana omwe mbali zonse za filimu ya polyester (M) zimagwirizanitsidwa ndi pepala limodzi la polyaramide fiber (Nomex).Imatchedwanso 6640 NMN kapena F class NMN, NMN insulation paper and NMN insulating paper.