Greige Fabric Certification Scope and Restricted Chemical Testing Protocols
Greige fabric certification demands batch testing of sizing agents, spin finishes, and biocide residues before finishing treatments mask regulated chemicals.
Circular Knitting Lubricants
Friction Reducer
Needle oils reduce friction and heat buildup during high-speed mechanical stitch formation on industrial knitting machines. High performance circular knitting lubricants prevent the wear of needles and sinkers while maintaining the thermal stability of the equipment. These fluids must be compatible with both the metal components of the machine and the synthetic or natural yarns being processed.
Washability Factor
Removal of the oil during the scouring process is a requirement for successful subsequent dyeing and finishing. If circular knitting lubricants remain on the fabric, they cause uneven dye uptake or visible spots on the finished garment. Modern formulations often include emulsifiers that allow the oil to wash away easily in a standard aqueous bath.
Viscosity Control
Machine speed and needle gauge dictate the required thickness of the fluid. Using the wrong circular knitting lubricants leads to excess splashing or insufficient protection at high revolutions per minute. Technical specifications for these oils include flash points and oxidation resistance to ensure safety in the factory environment.
Metal Protection
Additives within the oil prevent the formation of rust on sensitive machine parts during periods of high humidity. Regular application of circular knitting lubricants extends the service life of expensive knitting cylinders.