| 摘要 |
A mask sewing device comprises a pair of sewing machines which are fixed to a working table, being arranged left and right thereon in such a way as to face each other, and are operated in synchronism with each other, a pair of belts provided apart from each other on the working table by a given interval, each belt extending between the mask cloth feeding side and mask cloth sending-out side of the working table and a feeding unit for driving the belts in the normal and reverse directions, wherein the sewing machines can concurrently sew the folded end portions of the mask cloth at both sides thereof respectively, the mask cloth being inserted into the interval from the feeding side. Since the mask cloth is sewn by a pair of sewing machines while belts are driven normally and reversely by a feeding unit to feed the folded mask cloth forward and backward on the working table, it is possible to efficiently sew a mask of high quality in which stitch lines on both sides thereof are uniform and symmetrical to each other without veteran skill. As a result, it is possible to make practiceable the sewing processes in a sewing factory.
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