2. Sewing thread
• Thread is a type of yarn used for sewing.
Material:
Cotton, Cotton/polyester, Fusible, Linen,
Metallics, Nylon, Polyester, Rayon, Silk, Wool,
Water-soluble
3. 1. Good tensile strength
• Tensile strength is a measurement of the force
required to pull the thread to the point where it
breaks.
• Good tensile strength holds the stitched seam
securely during wash and wear.
4. 2. Good tenacity
• Tenacity is the relative strength obtained by
dividing the tensile strength by the thickness of
the structure (strength per size).
• Using a higher tenacity thread reduces thread
breakage and re-stitched seams, reduces seam
failure, and allows the use of a smaller
diameter thread.
5. 3. Optimum elongation
• The term elongation refers to the amount that a
thread stretches before it breaks, or reaches its
breaking point.
• Elongation at break, also known as fracture
strain, is the ratio between changed length and
initial length after breakage of the thread.
6. 3. Optimum elongation
• If a thread measuring 100 cm can be stretched
to 110 cm, at which point it breaks, it is said to
have 10 per cent elongation at break.
• Elongation at break is expressed as a
percentage of its original length.
7. 4. Proper lubrication
• Prevents thread burn out
• Cools the needle during sewing
• Reduces wear and tear of machine parts
• Increases seam strength
8. 5. Suitable twist
• Twist is defined as the number of turns
inserted per meter (TPM) of yarn or thread
produced.
• If the twist is too low, the yarns may fray and
break.
• If too high, it can cause snarling or looping
resulting in thread breakage.
9. 6. Good elasticity
• Elasticity is the ability of thread to resist a
distorting influence or stress and to return to its
original size and shape when the stress is
removed.
10. 6. Good elasticity
• Good elasticity enables thread to recover its
original length immediately after the tension
has been released.
• The elasticity of sewing thread affects the
strength and the finished quality of a stitched
seam.
11. 7. Low shrinkage
• The dimensional change of sewing thread after
washing with water or heat is called shrinkage.
• Shrinkage is expressed as percentage.
12. 7. Low shrinkage
• Due to the shrinkage of threads, seam pucker
is occurred.
• Low shrinkage of the thread being used on the
fabric material with higher shrinkage reduces
the chances of seam puckering.
13. 8. High 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.
• Good abrasion resistance ensures a good
sewing performance and makes the thread
more durable.
14. 9. Good 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.
15. 9. Good color fastness
• Good color fastness provides immunity to the
different agents the thread is exposed to during
manufacture and washing.
• The thread must hence be uniformly dyed.
