Short Arm Cylinder Bed Double Needle Compound Feed Sewing Machine
Filter Bag Top and Bottom Sewing Machine

ES-4331 sewing machine uses compound feed system to prevent material slippery. Upper and lower axis is driven by synchronous gear belt. Needle distance is adjustable by setting the knob. There is a safety device to protect the machine in case of overload.
It is widely used to sew tent, parachute, hot air balloon, sofas and so on. Especially suitable for filter bags and cylindrical product.
This machine uses electric positioning motor. It makes the needle always above or below the cloth during sewing stops, which is more convient for sewing.