VTT introduces recycled fiber

The VTT Technical Research Centre of Finland has introduced a new fiber by dissolving worn and discarded cotton and using it as a raw material. The first product models demonstrate that recycled fiber can be transformed into a yarn and comfortable fabric. Based on a carbamate dissolution process, the technology has been used to produce the first batch of recycled fiber in a pilot facility. The fabric, with a feel halfway between viscose and cotton, is smooth with a subdued matt finish. The production method is much friendlier to the environment than the viscose process, in which carbon disulphide is needed for dissolution. In addition, polyester residues are removed from the cotton material using methods familiar from the pulp industry.