Innovative design and manufacture of composite yarn with novel structure on TRIZ theory

To cover up the defects of the wrapped yarn and core-spun yarn that belong to composite yarns and are widely used,a kind of novel composite yarn which has special structure and fine performance is designe. Its design concept was analyzed using TRIZ nine screen method. Furthermore,technology conflict resolution principles 1,15,17,27 and 32 were applied to direct and improve the design and manufacture of the novel composite yarn: three monofilaments were fed into the front nip and located into the drafted strand at an equal space by a special input feed system,came out from the front roller nip, and then twisted into composite yarns with special spatial structure. The experimental results demonstrated that the real structure of the yarn is in agreement with the ideal structure which comes from TRIZ theory,and the novel composite yarn has excellent properties.