6641 Polyester film/polyester non-woven flexible laminate (Class F DMD) he ekolu-layer flexible composite insulation pepa i hanaia me ka kiʻiʻoniʻoni polyester melting-point kiʻekiʻe a me ka lole polyester non-woven wela loa.Hoʻopili ʻia kēlā me kēia ʻaoʻao o ka kiʻiʻoniʻoni polyester (M) i hoʻokahi papa o ka lole polyester non-woven (D) me ka papa F.ʻO ka papa wela ka papa F, ua kapa ʻia ʻo ia ʻo 6641 F papa DMD a i ʻole Class F DMD pepa insulation.