· Fibers of glass are produced by extruding molten glass, at a temperature around 1200
through holes in a spinneret with diameter of 1 or 2 mm and then drawing the filaments to produce fibers having diameters usually between 5 to15
.
· The fibres have low modulus but significantly higher stiffness.
· Individual filaments are small in diameters, isotropic and very flexible as the diameter is small.
· The glass fibres come in variety of forms based on silica 
which is combined with other elements to create speciality glass.
What are the different types of glass fibres? What are their key features?
The types of glass fibres and their key features are as follows:
· E glass – high strength and high resistivity.
· S2 glass – high strength, modulus and stability under extreme temperature and corrosive environment.
· R glass – enhanced mechanical properties.
· C glass – resists corrosion in an acid environment.
· D glass – good dielectric properties.
