Tests at the German Arbeitsgemeinschaft Verstärkte Kunststoffe (AKV), among other places, have shown that it is technically possible to break down the molecule chains in uncured polyester
by pyrolysis*, and then reuse the resulting product as new polyester raw materials. However, pyrolysis is not currently economically viable.
* Pyrolysis is the chemical decomposition of organic materials by heating
in the absence of oxygen or any other reagents.
One possibility for recycling Fiberglass
is crushing and granulation.
The process was functioning commercially in, for example, Germany
, at Ercom Composites Recycling GmbH*. The company accepts fibreglass-reinforced unsaturated polyesters
against payment, and sells the granulate for reuse as a filler and, "clean" landfill, and, to a limited extent, as a reinforcing material.
* Ercom Composite Recycling GmbH. Ercom (founded in 1999, by plastics molders and raw material suppliers) offers a complete system to close the recycling loop. A mobile shredding truck crushes used parts
at disassembly and production sites to reduce transport costs. The compacted material is then transported to a fractioning plant in
Rastatt from where the material is reprocessed into a range of fibre rich recyclate.