TWIST YARN PRODUCING APPARATUS FOR TWISTING WEFT DURING WEAVING AND PRODUCTION OF TWIST YARN

PURPOSE:To obtain high-grade woven fabric by applying twist before feeding weft and weaving when yarns are woven using a non-twist filament yarn or spun single yarn as weft. CONSTITUTION:When yarns are woven using a non-twist filament yarn of 50-150 denier or single yarn of cotton count 30-80 as a weft by a rapier loom, rapier 1 on delivery side holds one end of the weft fed from a weft feeding part 3 and delivers to rapier 2 on receiving side and the weft is drawn into the opening of warp and stretched. Then a twist device 4 inserted between the weft feed part 3 and rapier 1 on delivery side is turned to apply twist having 1.5-4.0 twist multiplier and different in twist direction before and behind the twist device 4. Then the reed is operated and twist different in twisting direction is applied before and the twist device 4. Then the reed is operated and the twisted weft is woven and cut with a cutter 5 to return the twist of open end of weft. Then the similar operation is repeated to advance weaving. The twisting period may be in any step if twisting is carried out before weft is drawn into warp, e.g. when the rapier 1 on delivery side holds the tip of weft or during delivery operation of weft.