I-6641 Polyester film/polyester non-woven flexible laminate (I-Class F DMD) iyiphepha elihlanganisayo elinezingqimba ezintathu elenziwe ngefilimu ye-polyester ephezulu encibilika kanye nendwangu enhle kakhulu ye-polyester egoqayo engalukiwe. Uhlangothi ngalunye lwefilimu ye-polyester (M) luboshwe ungqimba olulodwa lwendwangu engalukiwe ye-polyester (D) ene-Class F enamathelayo. Ikilasi elishisayo liyikilasi lika-F, Libizwa nangokuthi i-6641 F class DMD noma i-Class F DMD insulation paper.