| 摘要 |
PROBLEM TO BE SOLVED: To prevent a sewing thread from being broken by absorbing and relaxing a tension acting the sewing thread during returning of the thread when a stitch is formed. SOLUTION: A back lining member 40 with an appropriate elasticity and a specified thickness is placed along the back side of a prearranged line 26 for forming stitches on a skin material 20 made of a synthetic resin. While the back lining member 40 is sewn on the back side of the skin material 20 with sewing threads 32 and 34, the stitches 30 are successively formed. In this instance, the sewing thread 32 is prevented from being broken by absorbing and relaxing the tension during returning of the thread acting the sewing thread 32 passed through the back lining member 40 through thread through-holes formed on the skin material 20 by a sewing needle 56. The back lining member 40 is a sheet-like foam made of a resin such as a urethane resin. COPYRIGHT: (C)2004,JPO
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