Show Dyed Fiberglass Yarns The application of protein films of ofa a gelatine type to fiberglass yarns as they are ore formed has made it poss possible ble to dye to yarns with ordinary ordinary nary dyes and by commonly used methods The protein film which Is applied to the filaments while the yarn Is being formed represents but 1 per cent of the total weight of the finished yarn however adds greatly great great- ly to the depth of oC color Specialists anticipate large Industrial us use of the dyed yarns in the electrical field where they may be used for Identification in electric wires and cables |