Patterned glass is manufactured by pouring glass from the furnace into a series of rollers. It is then shaped to the desired thickness, annealed and cut to size.Patterned glass is also called rolled glass,figured glass,or obscure glass,decorative glass. It engraved a decorative texture by mold, on one or both sides of the glass sheet. By this process, pattern glass permit light transmits diffusely at the same time prevent clear vision through. With different patterns applied, the glass have different degrees of translucency and privacy.