| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a seam structure with high fashionability which can express a variety of ornamental patterns and a chainstitch machine capable of continuously and efficiently sewing a variety of ornamental patterns. <P>SOLUTION: A seam structure comprises two lines of a chainstitch part formed in a direction perpendicular to a feed direction of a fabric. The chainstitch part is composed of two needle threads 11L and 11R and one looper thread 13L and 13R entangled with stitch lines that are formed on a rear face of the fabric by the two needle threads 11L and 11R. The looper threads 13L and 13R in the two lines of the chainstitch part are different from each other in at least one of kind, color and thickness while one needle thread at one end side of the two threads 11L and 11R on one chainstitch part is located on the same or almost the same line as another needle thread at another end side of two needle threads on another chainstitch part, both of which are parallel to the feed direction of the fabric, or at least a part of looper threads of both the chainstitch parts overlap each other. <P>COPYRIGHT: (C)2012,JPO&INPIT |
