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- A glass batch incorporating about fifteen raw components, such as sand, soda ash,
limestone, etc., are stored in silos, weighted, mixed and poured into the furnace
by a batch feeder.
- The melting process of the verifiable mix takes place in a flame furnace heated
to about 1400°C. The melted glass is the temperature conditioned in the fore-hearth
before being fiberized into the final glass fibers.
- After being coated with binder, the fibers are laid out in a thick pack on a moving
conveyor.
- The variable speed of the conveyor belt permits the manufacture of different densities
of the finished products.
- The conveyor carries the resin-impregnated fibers into the curing oven where the
resin is cured.
- After curing the resin, the product is trimmed with circular saws.
- The manufacturing process is completed by the possible adhesion of either vapour
barrier aluminum facing or a bonded mat and by finally cutting the blanket to the
required length.
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