SEAM AND DEVICE FOR FORMING SEAM AND METHOD FOR FORMING SEAM

摘要

[PROBLEMS]To provide a seam of attractive appearance in which tightening force is increased and slackening and raveling are prevented drastically.[MEANS FOR SOLVING PROBLEMS]A seam (1) is formed by two needles juxtaposed in the direction at substantially right angles to the sewing direction (T), and consists of a chain seam (10) formed by a needle thread (12) passed through one needle, and a lock seam (20) formed by a needle thread (22) passed through the other needle (21). The loop of a needle thread forming the chain seam (10) is passed through the loop of a needle thread forming the lock seam (20) before tightening of stitch is performed, and further passed through the loop of a thread forming the chain seam (10) located on the downstream side in the sewing direction (T).