This robust machine stands up to the most demanding sewing jobs on all types of paper, textile and poly bags made from HDPE/PP, etc.a single-thread chain-stitch portable filled bags closing sewing machine. This robust machine stands up to the most demanding sewing jobs on all types of paper, textile and poly bags made from HDPE/PP, etc. It is simple to operate, even for inexperienced users. The reinforced feed mechanism consisting of wider presser foot and feed dog with a bigger throat plate than conventional single thread chain-stitch bag closing machines helps achieve smoother, even and better looking plain and folded top closures.