cm weft 23 8 fibers cmyarn count warp 41 9 s weft 42 2 s______________________________________ two pieces of cloth each having a size of 24 cm by 6 5 cm were cut out from the material cloth shown above with the longer side running along the warps the two pieces of cloth were superimposed and horizontally stretched between a pair of nozzles 6 one placed above the other as shown in fig1 with a tension of 10 gf cm exerted in the longitudinal direction of the superimposed pieces of cloth the superimposed pieces of cloth were sewn together by running the nozzles 6 shooting high pressure jet streams rectilinearly in the direction of the length of cloths i e in the direction of the warps thereof while keeping the nozzles in opposite positions to determine the relationship among the running speed of the nozzles seam strength and water content in the superimposed pieces of cloth the nozzles were moved at four different speeds ranging from 1 m min to 5 m min the suction force at the inlet end of the suction pipe 7 was 25 gf cm 2 from the sewn product a test specimen for the t type seam strength test 3 cm wide by 6 5 cm long was prepared with the width thereof running along the seam line formed by the action of the jet streams the water content was determined by measuring the weight of the superimposed pieces of cloth 24 cm long by.