In the current market, E glass, C glass fiber still take large proportion global consumption. The glass type is the big factor affecting the quality of glass fabric, coated glass fabric as well as their final application.Fiberglass is formed from molten silica sand, pyrophyllite, sodium carbonate etc mineral material then pulled yarn wet with sizing.
Glass fiber yarn is usually white, no oil pollution. That will determine the woven fabric or finished texiles appearance. No one would like to see a dirty spot in the fabrics. The polluted glass yarn is probably incompatible with resin systems and rubbers.
Glass fiber yarn’s fuzz is strictly controlled by manufacturers like EAS. The fuzz is seriously affecting the yarn’s friction during weaving or braiding.
Glass fiber continuous yarn is formed with fiber diameter ranging from 3.5um to 25um. The 3.5um to 9um fiberglass yarn is mostly used for glass fiber textiles. The textile fiberglass yarn is characterzied with higher strength, soft and low skin irritation. Customers perfer soft and low irritation fabric for the application
Uniform linear densiy will cause uniform tensile strength that will make weave uniform and reduce yarn breaking and knots during weaving. A neat and smooth glass woven fabric is welcome for further process of the glass fabric like PTFE coated fiberglass fabric, silicone coated fiberglass fabric etc.
All the formed fiberglass yarn impregnated with sizing, silane, paraffin or starch. Silane is good for further process and well compatible with resin systems and rubbers. Paraffin and starch are textile style sizing that can improve glass fiber yarn concentration of beam and reduce weave ability frication. Starch is much easiler sizing for heat clean.
R2O alkali oxide is a stanrdard classification of E glass and C glass. E glass less than 0.5%, C glass 11.5%.