Five-thread overlock sewing machine VS Four-thread overlock sewing machine

It uses double straight needles and three curved needles to form chain seams and overlock stitches. The main function is to cut and sew the edge of the wrapped fabric to prevent it from falling apart. With some auxiliary tools, you can do a lot of special sewings, such as gathering overlock, strip overlock, curling overlock, etc. This kind of hemming and stitching function is very widely used, and it can be applied to almost all unlined garments and some demanding lined garments, such as almost all splicing and stitching of jeans, casual wear, and some sleeping bags. According to the degree of automation, five-thread overlock sewing machines can be divided into ordinary models and computer models. The advantage of this sewing method is that the overlock and seam are completed at the same time, the speed is fast, the suture is elastic, and the seam is not easy to produce wrinkles. The disadvantage is that the chain thread is easy to pull off from the tail, and the tail of the suture must be fixed again, but if there is a jumper, it can also be pulled off from the jumper, so it is necessary to prevent the jumper.

It uses double straight needles and double curved needles to form overlock stitches. Because there are two needles and threads, it has better firmness and is used to cut and sew the edges of wrapped fabrics to prevent them from falling apart. a four-thread overlock sewing machine is mainly used for stitching and sewing knitted fabrics without additional reinforcement. Almost all knitted garments are sewn on a four-thread locomotive. Also suitable for all kinds of woven sutures, but is rarely used. Withdrawing the inner needle can also be used as a three-thread machine. According to the degree of automation, it can be divided into ordinary models and computer models. The advantage of this sewing method is that the overlock and seam are completed at the same time, the speed is fast, the suture is elastic, and it is not easy to break. The disadvantage is that the suture is easy to pull apart. Loose Seams where seams are often seen on the outside of the garment.