What is pin hole damage ? What is wet strength ? Why wet spg. done in linen ? What is difference linen drawing machines from1,2,3,4,5,6 ?

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Pin hole damage is a small hole in the fabric caused by a sharp object. Wet strength is the strength of the fabric when wet. Wet spg. is done in linen to determine its strength when wet. Linen drawing machines differ in the number of heads they have.

Pin hole damage is a common issue in fabrics and can be caused by needles, pins, or other sharp objects.
Wet strength is important for fabrics that will be exposed to moisture, such as towels or swimwear.
Wet spg. (skein per gram) is a measure of linen's strength when wet and is determined by soaking a skein of linen in water and measuring its breaking strength.
Linen drawing machines are used to produce linen yarn and differ in the number of heads they have. A machine with more heads can produce more yarn at once.
A 1-head machine produces a single yarn, while a 6-head machine can produce six yarns at once.

What is pin hole damage ? What is wet strength ? Why wet spg. done in linen ? What is difference linen drawing machines from1,2,3,4,5,6 ?

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