Glass fibres existing in a wide range of types for several ends use made by melting silica (sand material) at very high temperatures and adding to the melt the necessary fabrics. High temperatures always incur significant energy costs.
Glass recycling is a perpetual form of recycling. Unlike some other recycled products, a recycled bottle can be recycled into another glass bottle; this process can go on endlessly with no loss in quality or purity. Glass is 100% recyclable.