WHAT is Glass Wool?
Glass wool or fiberglass insulation is an insulating material made from fibres of glass (fiberglass) arranged into a texture similar to wool. Glass wool is produced in rolls or in slabs, with different thermal and mechanical properties.
Glass Wool - Manufacturing process
After the fusion of a mixture of natural sand and recycled glass at 1,450 ˇăC, the glass that is produced is converted into fibers. It is typically produced in a method similar to making cotton candy, forced through a fine mesh by centripetal force, cooling on contact with the air. The cohesion and mechanical strength of the product is obtained by the presence of a binder that ˇ°cementsˇ± the fibers together. Ideally, a drop of bonder is placed at each fiber intersection. This fiber mat is then heated to around 200 ˇăC to polymerize the resin and is calendered to give it strength and stability. The final stage involves cutting the wool and packing it in rolls or panels under very high pressure before palletizing the finished product in order to facilitate transport and storage.
Glass Wool - Uses
Glass wool is a thermal insulation that consists of intertwined and flexible glass fibers, which causes it to "package" air, resulting in a low density that can be varied through compression and binder content. It can be a loose fill material, blown into attics, or, together with an active binder sprayed on the underside of structures, sheets and panels that can be used to insulate flat surfaces such as cavity wall insulation, ceiling tiles, curtain walls as well as ducting. It is also used to insulate piping and for soundproofing.
Glass Wool - Manufacturers
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