A double needle flat sewing machine is a type of sewing machine that is used to create parallel rows of stitching simultaneously. It is commonly used in the garment industry for creating decorative stitching and finishing edges of fabrics.
The machine has two needles mounted on a single needle bar and two thread spools, one for each needle. The needles are typically spaced a specific distance apart, which can be adjusted on some machines. As the fabric is fed through the machine, both needles pierce the fabric simultaneously, creating two parallel lines of stitching on the surface.
Double needle flat sewing machines are available in various sizes and models, ranging from industrial to home use. Industrial models can handle heavy-duty fabrics, such as denim and leather, while smaller models are suitable for lightweight fabrics, such as cotton and silk.