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Yarn Tensile Strength

Yarn Strength 

A small but important part of the manufacturing process involves making certain the yarn is strong enough, particularly for the warp.  Testing can be done quickly with a couple of machines.

 Spinning and Counting Revolutions First, a specific length of yarn is taken off the spindle.  This machine counts to the proper number of revolutions and stops.  Thus, producing the same length of yarn for each test. 
The yarn is then mounted on a device that stretches it until it breaks, measuring the strength in pounds and kilos.  What they are looking for in this length of yarn is a breaking strength of about 100 kilos or almost 220 pounds of strength.
 Stretching to Strength Capacity

99.5 Kilos

Here the gauge shows this batch broke at about 99.5 kilos – nice and close, well within accepted tolerance.  This batch of yarn can be strung on a loom to have knots tied on it.

Submitted by Jim Bennight

"Photographs from a trip to India"



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