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Sewing Thread Necessary Information

Sewing Tread Consumption
Basically to calculate the amount of thread in a seam, you can: - Measure the actual amount of thread consumed in a specific length of seam. - Calculate the thread consumption by using mathematical stitch formulas based on the thickness of the seam and the number of stitches per inch. Example that we wearing cloth. Carefully if we follow joint part of clothe. Where joining swing is a Thread. So, Now we try to find out how to consumption of Thread.


How many type of Sewing Thread 

1. Fiber type:

a ) Natural : Linen, Silk, Cotton.
b ) Synthetic : Polyester, Nylon, Aramid.
c ) Blended

2.Construction of yarn:

a ) S-twisted

b ) Z-twisted

3. Thread finishing:

a ) Textured thread

b ) Core spun thread


Sewing threads packages

> Spool : wood or plastic , double flanges, parallel wound.
   Yarn length : Spool thread package contains 100-500 meter thread.

> End Uses :  Upholstery, Footwear, leather goods manufacturing and in hand sewing              operations.

> Cop : Cops are small cylindrical flangeless spools, with precision cross wound. Made of        paper and plastic. They are two types, small cop (tube) and medium cop(cop).

  Yarn length : The length of thread wound ranges from 100-2000 m on small cop and 400-      4000 m on cop

> End Uses : Kite flying, Upholstery, ready-made garment, tailoring, hosiery, umbrella, and       shoe stitching

> Cone : This is self-supporting, cross wound conical package. It is easier to withdraw yarn     end from a cone than from a cheese and because of this, cone is more widely used.

    Yarn length : 1000-25000 m

> End uses : ready made garments, tailoring, hosiery, leather stitching, Upholstery, shoe         stitching, denim, embroidery, and kite flying.

> V-cone or King Spool : V-cones are parallel tubes or low angled cones with an additional       base in the form of a raised flange.

   Yarn length : 1000-5000 m with length of traverse 6.5-9 cm.

> End uses : embroidery, core-spun, and filament threads.

> Cocoon :  Cocoons are self-supporting i.e. center-less thread package specially designed     for the insertion in the shuttle of multi needle quilting and some types of embroidery.

> Prewound Bobbin : Prewound bobbins are precision parallel wound thread package             designed to replace metal bobbins on a variety of lock stitch machines.

> Skein :  A very small hank of soft twisted plied thread (around 8 m) of coarse count is           parallel wound with the help rotating flyer, which withdraws the thread from the supply           package cone.

> End uses : embroidery.


Essential Properties required for Sewing Thread
  
1 . Needle thread must pass freely through the small eye of the needle; consequently they         must be uniform, knot-free, non-torque and fault free.

2 . Tensile strength is one of the essential properties of the thread. The strength of the               sewing thread must be higher than that of the fabric so that the thread does not rupture         during use.

3 . Good abrasion resistance is essential for good sewing performance.

4 . Good resistance to heat is a very important requirement of a sewing thread. Needle               heating causes sewing thread breakage, cross-thread, skipped stitches, seam damage         and physical damage to the needle.

5 . The hairiness of sewing thread also affects the appearance of the seam.

6 . Color fastness is a general requirement for sewing thread. It is important that the                   selected shade retain its color throughout the life of the garment.

7 . Low shrinkage during washing and ironing is required.

8 . Good luster in the thread improves appearance of the seam.

9 . Threads must be uniformly dyed.

Manufacturing stages of sewing thread
  1 . Sorting the initial materials into lots.

  2 . Winding threads in spool.

  3 . Thread production.

  4 . Thread winding ( soft coning).

  5 . Dyeing of threads  (metal if required).

  6 . Drying of threads ( if dyeing is required ).

  7 . Thread winding on winder ( hard coning ).


  8 . Sorting, marking and packing of finished threads.

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