Topic While utilizing the effect which uses the thread of elasticity, existence of the thread of elasticity the elastic weft knitting area which, can try not to be able to recognize easily with naked eye make the color adjusting the thread of the non elastic thread with unnecessary, it be possible, hold down production cost cheaply to reduce stock, is offered.SolutionsNon elastic thread it pulls with 1 and polyurethane type elastic yarn 2 and arranges and forms weft knitting area. As for polyurethane type elastic yarn 2 it is not the covering thread and it is something which is constituted from the polyurethane type elastomer fiber independent thread, use weight per unit length of polyurethane type elastic yarn 2 is smaller than as many as 1/2 of use weight per unit length of non elastic thread 1. Choice figure Drawing 1
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