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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.
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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.
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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.
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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.
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Submitted by Jim Bennight
"Photographs from a trip to India"
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