Patent ID: 8273454

Claim:
Yarn comprised of reinforcing fiber filaments and a resin, infiltrated into the yarn, that is capable of being repeatedly melted and solidified by cooling to room temperature, wherein the reinforcing fiber filaments of the yarn are at least partially bound to one another by the infiltrating resin, wherein the yarn contains 2.8 to 25 wt.% of the infiltrating resin relative to its total weight, wherein the reinforcing fiber filaments are electrochemically pretreated carbon fiber filaments, wherein the infiltrating resin contains at least two bisphenol A epichlorohydrin epoxy resins H 1 and H 2 in the weight ratio H 1 :H 2 of 1.1 to 1.4, H 1 having an epoxy value of 1,850 to 2,400 mmol/kg and a molecular weight of 800 to 1,000 g/mol and solid at room temperature, and H 2 having an epoxy value of 5,000 to 5,600 mmol/kg and a molecular weight of <700 g/mol and liquid at room temperature, wherein the infiltrating resin contains an additional third resin H 3 , H 3 being a bisphenol A epichlorohydrin epoxy resin with an epoxy value of 450 to 650 mmol/kg, and a melting range of 110 to 130° C., and wherein the yarn contains a total of 0.5 to 1.7 wt.% of H 1 and H 2 , and 2.3 to 5.5 wt.% of H 3 , relative to its total weight.