For finding out the beginning of operation and practical research for the future, by means of searching the problems of ring and traveller occured on the twisting and the winding of heavy denier yarn like rope cord, twine and belt cord, we research for four kinds of fiber……Nylon, Vinylon, Polyethylene and High tenacity rayon……cup to 90, 000 total denier.
We have reached the following conclusions :
(1) By the twisting and winding system made by ring and traveller, it is easily possible to twist and up to 90, 000 denier of other fibers.
(2) Polyethylene fiber takes a different tendency from other fibers as follows :
a) We have to keep larger twisting yarn tension per denier.
b) We have extremely to increase twisting yarn tension per denier as the number of twist increases.
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