Good quality thread considerable point

 Good quality thread considerable point :

Good quality thread is very necessary for a sewing machine. The selection of a good quality thread depends on the below point to select. 

1. Tensile strength

2. Tenacity

3. Loop strength

4. Loop strength ratio

5. Minimum loop strength ratio

6. Abrasion resistance 

7. Stress-strain curve

8. Shrinkage 

9. Elasticity

10.  Elongation at break 

11. Colorfastness

1. Tensile strength: To break a sewing thread how much strength need is called tensile strength. Generally, we can express it in grams, kilograms, or pounds. The tensile strength can be changed due to temperature, vapor, and force applied to the thread to tear it. 

2. Tenacity: If we divide tensile strength by thread count then we can get tenacity. So we can say that the tenacity depends on thread count. That means if the thread is thicker tensile strength will be more and if the thread is thinner then tensile strength will be less. Tenacity tends to be strength per unit thickness. 

3. Loop strength: One thread loop passed through another loop and measured loop breaking strength. In this measurement, we should maintain both thread loops of the same length. 

4. Loop strength ratio: If we measure 2 threads' loop strength then both of these ratios are called loop strength ratio. The maximum value of the 2 threads can be 2. 

5. Minimum loop strength ratio: If we maintain a serial checking loop strength ratio then the maximum weak thread is called as minimum loop strength ratio. 

6. Abrasion resistance: Sewing thread must have good abrasion resistance. Here we compare one thread to another thread.

7. stress-strain curve: This is a curve where we keep the tenacity and elongation of the thread. If we change tenacity then elongation is how much that can see in this curve. The various thread has various types of the curve due to their quality being different. 

8. Shrinkage: If we wash a thread and dry it then the thread is how much shrunk that is measured and the result is shrinkage. It can be expressed as a percentage. If a sewing thread has a shrinkage tendency then the thread can make a seam pucker.

9. Elasticity: If we warp a thread and again release the warp tension then it comes to its initial length is called elasticity.

10. Elongation at break: If we apply force to a thread's initial length then the thread extension and break at a stage which is called elongation at break. 

11. Colorfastness: Colorfastness is most necessary. A sewing thread after sewing must not change its color up to the life of the garment.