Difference Between Chain And Lock Stitch
Each time a sewing machine needle pierces the sewing material, one or more sutures are connected, interconnected or interwoven on the sewing material to form a unit. Self-connection is a connection method in which a loop of the sewing thread of the machine needle penetrates into the previous loop formed by its own sewing thread during sewing; interconnection is a connection method in which the curved needle sewing thread first penetrates into the loop formed by the machine needle sewing thread after the machine needle pierces the sewing material, and then penetrates into the loop formed by the curved needle sewing thread when the machine needle pierces the sewing material again after the sewing material is fed; during interwoven sewing, the shuttle thread penetrates into the loop formed by the machine needle sewing thread after the machine needle pierces the sewing material.
There are two main sewing stitches: chain stitch and lock stitch.
The lock stitch is the most common. It consists of two stitches that are intertwined like twisted ropes, and the intertwining point is in the middle of the sewing material. It can form a safer and more durable stitch that is less likely to unravel. From the cross-section of the stitch, the two stitches are like two locks locked together, so it is called a lock stitch. This stitch is used on sewing materials such as cotton, wool fabrics or leather with low shrinkage, and the front and back sides have the same shape, like a dotted line. The stitches are densely distributed, the strength of the sewing is generally better than hand sewing, and it is also easier to sew small and precise stitches using lockstitch, which is why it is often used for intricate embroidery and other decorative work. However, the main disadvantage of lockstitch is that it requires a more complicated sewing machine with two threads and a spool, which can be expensive and time-consuming to set up.
Chain stitch is formed by the self-connection or interconnection of the thread loops of the sewing thread. Commonly used ones are single-thread chain stitch, double-thread chain stitch and triple-thread overlock stitch. This stitch is characterized by its elasticity, which allows it to expand and contract with the material without breaking the seam. It is suitable for garments made of elastic fabrics or products and garment blanks that are easy to loosen due to overlocking. It is also a quick and effective stitch because it can be easily completed with just one needle and one thread. However, the main disadvantage of the chain stitch is that it is easy to unravel if it is accidentally hooked or pulled too tight. It can be frustrating if you spend a lot of time on a project and it falls apart because of a mistake.
If you are working with stretchy fabrics and need a quick and efficient stitch, then chainstitch may be your best choice. However, if you are looking for a safe and durable stitch that will stand the test of time, then lockstitch is the best choice. Whatever you choose, keep in mind that both stitches have their own advantages and disadvantages, and it is important to choose the right stitch if you want to achieve the best results.
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