Structures of Continuous Filament Yarns :
There are several types of continuous filament yarn structures developed and used by industry today:
Flat continuous filament yarns: Standard (ordinary) filament yarns are known as 'flat' yarns compared to textured yarns, which may have filaments with special curly or wavy shapes. They can be dull and matte or bright and shiny as needed.
Textured continuous filament yarns: These should not be confused with fancy or decorative yarns. Textured filament yarns are man-made filament yarns in which the filaments have been specially modified for higher dimensions. Physical deformations such as crimps, loops and knots are introduced into the filaments during the texturing process. Various texturing methods are used to introduce this distortion.
Bi-component continuous filament yarns: These yarns are produced from two completely different fiber-forming polymer components that are combined at the fiber extrusion stage. Each material can be designed for individual properties, such as differential shrinkage ratios, which can lead to kinking or spiraling to mimic natural wool.
Tape or split-film yarn: To make the film, the polymer is extruded into a thin, wide sheet. Film tape production is cut into narrow strips or ribbons. Slits can then be made along the length of the ribbon to form a split-film yarn.
0 Comments