FIBERS MANUFACTURING

WORKING

§ The raw material of glass are fed in to the feed stock and is electrically heated to 1400 °C the raw material include sand, lime stone and Al₂O₃_.

§ The melt is stirred and maintained at constant temperature.

The melt is passes through platinum nozzle containing around 394 holes of μ m diameter and the yarn coming out is warped in forming tube at a shape of 25m/s.

§ Before the yarn drawn sizing is done, sizing solution consisting of organic agents binders, lubricants and coupling agents, Binder allow packing of stands.

§ Lubricants prevent abrasion of filament and coupling agents provide better bonding with polymer.

§ Fibers are then drawn into strands, each strands consisting of more then 204 filaments. The wound array of glass stands is dried in oven to remove water and other solvent. Glass strands can be converted to various forms as –

a) Continuous strands ( group of 204 fiber )

b) Rovings ( group of parallel strands )

c) Chopped rovings ( 5 to 50 mm length )

d) Tow ( group of over 10000 fibers )

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MECHANICAL ROCKS

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