11 Properties of Sewing Thread

By | February 8, 2016

11 Properties of Sewing Thread

Mayedul Islam
Merchandiser at Fashion Xpress Buying House.
Badda, Dhaka, Bangladesh.
Email: [email protected]



Sewing thread is an important trimming which are vastly used in readymade garments sector. Sewing thread contains some properties. In the past I have presented here the relation between sewing thread, needle and material but today I have explained here different properties of sewing thread.

You may follow Sewing Thread Consumption for Different Stitches

Sewing Thread

Sewing Thread

Characteristics of Sewing Thread:

There are different key properties of sewing thread which are mentioned in the following:

  1. Tensile strength,
  2. Tenacity,
  3. Loop strength,
  4. Loop strength ratio,
  5. Minimum loop strength,
  6. Elongation at break,
  7. Stress strain curve,
  8. Elasticity,
  9. Shrinkage,
  10. Abrasion resistance,
  11. Color fastness.

All the above properties have explained in the below:

1. Tensile strength:

The minimum load which is needed to break the sewing thread is termed as tensile strength of that thread. It is expressed by gm, kg or lbs which may vary according to the temperature and humidity. It is used to determine the difference of tensile strength of sewing threads of same size or ticket number.

2. Tenacity:

The ratio of tensile strength and thickness or count of sewing thread is known as tenacity. Strength and quality of various count thread are verifies by tenacity. Tenacity is denoted by gm per tex or gm per denier in textile and apparel industry.

3. Loop strength:

Thread has minimum strength in its loop position and the minimum load needed to break the loop is termed as loop strength. It is deeply related with stitch strength of a thread.

4. Loop strength ratio:

The ratio of sewing thread tenacity and loop strength of that thread is termed as loop strength ratio. It should be noted here that, the maximum value of loop strength ratio may be 2. Loop strength ratio is used to find out the efficiency of sewing thread in the stitch.

5. Minimum loop strength:

The loop strength of weaker loop is termed as minimum loop strength. It is used to determine the performance of sewing thread in the stitch.

6. Elongation at break:

Elongation at break is the extension of sewing thread at breaking point. It is expressed in percentage. It is too much important for extensibility of seam.

7. Stress strain curve:

Stress strain curve is the drawing curve of tenacity which opposes the elongation of sewing thread. It has great importance to compare the values of two threads.

8. Elasticity:

Elasticity is the property by means of which the sewing thread returns back to its original position when deforming force is released. It should be noted here that when sewing thread back to its original position after extension is calked plastic. But if don’t back to its original position is called plastic. Most of the sewing threads are lies in the middle position of the elastic and plastic.

9. Shrinkage:

The dimensional change of sewing thread after washing with water or heat is called shrinkage. Shrinkage is expressed as percentage. Due to the shrinkage of threads, seam pucker is occurred.

10. Abrasion resistance:

Abrasion resistance is the frictional resistance of one sewing thread to another. It has great importance to determine the sewing performance of thread which is measured by using special machine and method.

11. Color fastness:

Color fastness is very important factor for the sewing thread. The color durability of sewing thread against sunlight and wash must be as like as garments.

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