| 摘要 |
An anti-felting treatment for yarns contg. keratinous fibres, partic. wool yarns involves treating the yarn in the form of single fibres or fibre bundles moving in a lengthwise direction. The yarn passes continuously through a bath contg. a felt-proofing agent, excess liq. is removed and the yarn is dried for a sufficient time to fix the agent on the fibres. Suitable felt-proofing agents include reactive polyolefins, reaction prods. of polyisocyanate with OH-cpds., silicone polymers, aziridine cpds, reaction prods. of epoxides with fatty amines and dicarboxylic acids or polyamides, reaction prods. with thiosulphate end gps. or pref. reaction prods. with mercapto end gps. Treated yarns are suitable for subsequent spinning, weaving, knitting etc. The yarn is treated direct from the spinning machine and can be mixed with untreated yarn to achieve fancy effects. |
