Materials Based On Recycled Textiles

Basic info is found in Chapters 9, 10 and 11.

Each year, thousands of tons of textiles, including clothes, are thrown away. On rubbish dumps they decompose, emitting large quantities of the greenhouse gas methane. However, products based

14.27

Insulation matting of recycled textiles. Source: Rolf Jacobsen/Ultimat.

14.27

Insulation matting of recycled textiles. Source: Rolf Jacobsen/Ultimat.

on recycled textiles are now becoming quite common (Figure 14.27). Discarded textiles are collected, and synthetic textiles are removed so that the final product contains over 95% wool and cotton. It is shredded and then heated to 120 °C while fibres of polyester (10-15% by weight) are melted in as a binder. Ammonium phosphate fire retardant may be added.

It has been estimated that in the case of Norway, if all such waste textiles could be re-used in the form of insulation, this could cover up to 25% of the total building insulation market. This very positive resource-perspective is compromised somewhat by the fact that the added polyester is an oil-based product. With mostly natural fibres, the moisture buffering properties are good. The material can probably be recycled into the same product again, but as waste it may have to be especially disposed of depending on the substances added.

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