PILE LAYER HAVING BUNDLES COMPRISING CARBON FIBERS

摘要

The invention relates to a pile layer, comprising a plurality of bundles, which are partially opened up into individual fibers and which comprise carbon fibers, and comprising foreign substances, and wherein the carbon fibers have at least a mass fraction of 70% of the total mass of the pile layer, and the foreign substances no more than 30%, but not less than 2%, wherein the foreign substances are obtained from a recycling process.