SPINNERET
A disc or screen containing many small holes through which molten polymer is extruded to form filaments. References for this information: Inda
SPINNING
A process by which filaments or fabrics made from filaments, are generated directly from the molten polymer (see MELT SPINNING). A process by which fibers or filaments are drawn out…
SPIN FINISH
A lubricant applied to fibers to reduce friction and static during processing into yarns and fabrics. References for this information: Inda
SPECIFIC GRAVITY
Ratio of the mass of a material to the mass of an equal volume of water at 4oC. Most POLYMERS used in NONWOVENS have a specific gravity greater than 1…
SORBENT
Materials that recover oil through either absorption or adsorption. They play an important role in oil spill cleanup Polypropylene is the ideal material for marine oil-spill recovery due to its…
SONIC BONDING, SONIC SEWING
Also known as ultrasonic bonding and pinsonic bonding.Sonic bonding uses high frequency sound to generate localized heat through vibration and thereby cause thermoplastic fibers to bond to one another. Specially…
SOLUTION DYING
Adding pigments or insoluble dyes into the polymer melt or spinning solution prior to extruding a manmade fiber. References for this information: Inda
SMOULDERING
A slow flameless, smoking burning of a fabric. References for this information: Inda Edana
SLURRY
A water or solvent suspension. Examples are titanium dioxide mixed with water for addition to polymers or fibers mixed with water for wet forming. References for this information: Edana
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