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  • Raw Yarn

    Raw Yarn

Raw Yarn

Raw Yarn

raw yarn

Main Fibers and Their Proterties

Fiber Polyester Cotton Nylon Rayon
Microscopic Appearance Smooth, even, rod like, different cross-sectional shapes Flat, twisted and ribbon-like Very smooth and even Striations seen in viscose and high strength rayon If delustred, scattered specks of pigment can be seen
Length Filament and staple Staple fiber, length ranges from 1 to 5.5 cm Filament and staple Filament and Staple
Color White Creamy white in natural form, unless treated Off white Transparent unless dyed
Luster Bright or dull Medium, unless treated for luster High natural luster that can be controlled High
Strength Good to excellent Fair Exceptionally high Fair to excellent
Regular rayon: fair strength
High tenacity types: good strength
Elasticity Fair to good Low Exceptionally high Regular rayon: low
High strength rayon: good
Resilience Excellent Low Very good High wet strength rayon is better
Moisture absorption Less than 1% Excellent 3.8% Higher than natural cellulose
Fibers swell in water
Weaker when wet
Effects of sunlight Good resistance Oxidises, turning yellow and losing strength on long exposure Good resistance Generally resistant, loses strength after long exposure
Cleanliness and washability Prevents dirt from settling. Smooth surface allows stains to be easily washed away Launders well and gives up dirt easily Prevents dirt from settling. Smooth surface allows stains to be easily washed away Prevents dirt from settling. Smooth surface allows stains to be easily washed away
Effects of mildew Absolutely resistant Affected in a damp condition No effect Affected in a damp condition