DM 120 1st Edition Lecture 6 February 16 2015 Outline of Last Lecture Fiber Production Making of Microfibers Properties of manmade fibers Outline of Current Lecture Yarn Manufacturing Difference between filament and spun yarn What properties both fibers have The making of both fibers Yarn Manufacturing Filament Spun Yarn Spun Yarns Made by twisting the fiber together Composed of short length fibers measured in inches Types of Spun Yarns a Wool Fibers woolen made of carded yarns used for blankets jackets worsed made of combed yarns smooth even maintains stability b Linen Fibers tow short fibers irregular DM 120 1st Edition Lecture 6 line long fibers above 15 inches c Cotton Fibers carded the processes to clean detangle combed the processes of removing short fibers reserving long fibers costly Filament Yarns Composed of continued strands of fibers measured in kilometers Smooth Straight fibers Not twisted together because already long Special effected needed for twisting Usually made from microfibers a Smaller fibers improve characteristics Types of Filament Yarns a Multifilament Fibers Multiple pieces of fibers together very flexible b Monofilament One single strand of fiber very stiff Properties Filament Yarns Spun Yarns Yarn Uniformity More Less Yarn Luster Smoothness More Less Yarn Strength More Less Characteristics Smooth Luster Warm Soft Light End Uses Lining Active Wear Outdoor Wear Clothing Bedding Materials Acrylic Silk Spandex Wool Cotton Polyester Nylon Rayon Ac etate Fit into BOTH categories