Home  Markets  Roofing  Pitched Roof  Polyester Spunbond	Type Key product characteristics: Polyester Spunbond 472  Polyester spunbond nonwoven, thermal bonded with linen-pattern calender. 478  Polyester spunbond nonwoven, thermal bonded with linen-pattern calender. 488 Polyester spunbond nonwoven, thermal bonded, smooth calender 124 Filament nonwoven, chemical and thermal bonded with linen-pattern calender.