Chain stitch and lock stitch have several differences. Sources of main differences between lock stitch and Chain stitch are thread requirement, thread bound process, strength, the appearance of the stitch, seam Pucker Formation, rate of extensibility, stitch security, maximum sewing speed, consumption of thread, etc.
Chain Stitch vs Lock Stitch
In the following table the main differences between chain and lock stitch are given:
| Sources | Chain Stitch | Lock Stitch | |
|---|---|---|---|
| 1 |
Thread requirement |
Two or more thread groups are required to form stitches. Needle thread and looper thread are commonly used in chain stitch. |
At least two thread groups are required to form stitches. Needle thread and bobbin thread are commonly used in chain stitch. |
| 2 | Thread bound process |
Interloping and interlacing. |
Interlacing |
| 3 | Strength |
Chain stitch strength is higher than the lock stitch. |
Lock stitch strength is lower than the chain stitch. |
| 4 | The appearance of the stitch |
At the top of the stitch, it appears like a lock stitch and at the bottom, it looks like a double chain. |
On both sides of the stitch, it appears the same. |
| 5 |
Seam Pucker Formation |
Seam pucker formation possibility is less than the lock stitch. |
Seam pucker formation possibility is higher than the chain stitch. |
| 6 |
Rate of Extensibility |
The rate of extensibility of the chain stitch is 30%. |
The rate of extensibility of lock stitch is less than 30%. |
| 7 |
Stitch security |
Stitches are secured by one cm thread at the end. Back tacking is not required at the finishing end |
Stitches are secured by one cm thread at the end. Back tacking is not required at the finishing end |
| 8 |
Maximum Sewing Speed |
Maximum Sewing Speed of Chain Stitch Sewing Machine is 8000 SPM. |
Maximum Sewing Speed of lock stitch Sewing Machine is 6000 SPM. |
| 9 | Consumption of thread | Higher | Less |