Long Staple Cotton vs Short Staple Cotton - for yarn making?
http://www.superiorthreads.com/videos/dr-bob-cotton-staples-and-fiber-explained/
Dr. Bob: In the cotton world, have you heard of long staple? What’s a staple? It’s a fiber. You have this beautiful cotton plant, and at the top of the cotton plant youave got this fluffy two or three inch cotton boll. And when it’s nice and opened up you have all these fluffy white fibers, one cotton boll…250,000 fibers. The length of those fibers is what determines the quality of the cotton.
We’ve all heard of long staple, but we usually don’t hear the words, short staple cotton, buy me. Nothing to brag about, right? If you ever see a label oncotton threadthat says 100 percent cotton, guess what staple length it is?
Participant: Short.
Dr. Bob: Always. Because if it is long, they will brag about it. The price is higher. That’s the bragging point. It really doesnat matter the length of the fiber if youare turning that cotton into clothing, bed sheets, towels, because you can take a short staple, lower grade cotton, and by the time you weave it, you can put a nice dense weave on it and still come up with very good clothing, or bed sheets, or towels.
But in the thread world it’s a different story. In the thread world we need to take those fiber lengths, spin them together, make it very, very fine and yet make them run through a machine at high speed without problem. That’s where the length of the fiber is so important, and that’s where we talk about long staple.
Long staple cotton has been around for about 140 years. But about a dozen years ago they were finally able to develop consistently a longer fiber than long staple. What could be longer than long staple? Extra-long staple. Yes. The thing to remember now is if you see thread that is labeled long staple, it’s medium grade. The no label, which is just cotton, is going to be short, that’s the low grade. Long staple is medium. Extra-long staple is as good as it gets.
For the scientists here, here’s the difference. Short staple is an inch and an eighth. That’s the length of that fiber of the cotton plant and the cotton boll. That’s the length of the fibers. An inch and an eighth is short staple. And about 85 percent of all cotton grown is short staple. In order to qualify as a long staple, it must be longer than one inch and one eighth. It must be an inch and a quarter. Woo-hoo. An eighth of an inch difference. Yes?
Participant: What is Egyptian cotton?
Dr. Bob: Egyptian cotton? We’ll get to that in just a minute. The long staple goes from an inch and an eighth all the way to an inch and a quarter, one eighth of an inch difference. You almost need a microscope to distinguish the difference. But in the thread world that’s big because it’s a little bit longer. It takes fewer pieces spun together, which means stronger thread, less lint, cleaner machine, fewer frustrations, and a happier quilter. But it gets even better because now we have extra-long staple.
The longest fiber developed consistently in cotton is now two inches long, and that’s a huge jump. We go from an inch and an eighth which is short, an inch and a quarter which is long, as long as two inches to be an extra-long. Minimum, it must be an inch and three eighths, but it is as long as two inches. Now we have these cotton fibers in the plant that are almost twice as long as the short which means it takes only half as many fibers to spin it together, cleaner thread, stronger thread, cleaner machine, happier quilter.
Every time you go from one grade to another, your price goes up 50 percent. You will go from a short staple to a long staple, your price, 50 percent up. To go from a long staple to an extra-long staple, another 50 percent increase. It’s worth it in the thread world.