shuttle hook case

At its core, the single needle lockstitch machine operates using a straightforward mechanism. It consists of two threads—a top thread and a bottom thread, typically wound on a bobbin. The top thread is looped through a needle, while the bottom thread is fed from the bobbin, which resides underneath the sewing plate. When the needle pierces the fabric, it creates a loop that intertwines with the bottom thread. This action produces a tight, secure stitch, which is the hallmark of lockstitch technology.

At the heart of the swing needle sewing machine lies its distinctive needle movement. Unlike standard sewing machines, which typically have a straight-shaft needle, the swing needle is designed to pivot back and forth. This motion allows for more complex stitching patterns and facilitates various techniques such as zigzag stitching, decorative borders, and even quilting. By utilizing the swing needle, users can achieve a level of creativity that is difficult to replicate with traditional machines.

There are several advantages associated with lock stitches. First and foremost is the strength of the seam, which makes it less likely to fray or come apart over time. Additionally, lock stitches produce a neat, professional appearance, making them suitable for visible seams in finished garments.

One of the biggest differences is in the motor. Heavy duty machines need to power through thick, layered, or dense fabrics without straining, so they have more powerful motors. Motors in heavy duty machines often range from 1 to 5 amps, while standard motors are usually around 1 amp or less. With the stronger motor, heavy duty machines can sew for longer periods without overheating or losing power. This makes them ideal for sewing operations like upholstery where seams need to go through multiple fabric layers.

Hengshui Jrain’s FRP products can be widely used on field of water treatment, wastewater treatment, odor control, etc.

Molded gratings include: