What is wool classing?

What is wool classing?

Wool classing is the production of uniform, predictable, low-risk lines of wool, carried out by examining the characteristics of the wool in its raw state and classing (grading) it accordingly. Wool classing is done by a wool classer.

What is doggy wool?

‘Doggy’ wool can be spun and woven into cloth on conventional machines to give a textile which is marginally inferior to normal; on the latest machines ‘doggy’ wool can be spun finer than normal2.

What is micron count in wool?

A micron is a unit of measurement used for the diameter, and therefore fineness, of a fiber — the lower the micron count, the finer the fiber; the higher the micron count, the hardier or “coarser” the fiber. For a finewool, commercial wool yarn manufacturers aim for an average micron range of 19–21.5 microns.

What is wool quality count?

Comeback wool has visual quality count of 60s/58s and a micron range of 22–24 microns. Comeback wool has a staple length of 110 millimetres. Fleeces are bright, soft, heavy-cutting and have good character.

What does Aaam mean in wool?

The finer the wool the higher the count number. In this traditional system, fleece lines were branded as AAASFM, AAAM, AAM etc. to indicate the fineness of the wool to the buyer.

What is CV in wool?

Measuring fibre diameter Average fibre diameter is the major price determinant of wool. The 2 ways that fibre diameter is measured, the coefficient of variation of fibre diameter (CVFD) and standard deviation (SD), can provide you with valuable information on the variability of fibre diameter of fleeces.

What is 19.5 micron Merino wool?

19.6 microns to 20.5 microns – fine and medium Merino. 18.6 microns to 19.5 microns – fine Merino (also called extra fine Merino) 17.6 microns to 18.5 microns – superfine Merino. less than 17.5 microns – ultrafine Merino.

What does SD mean in wool?

Average fibre diameter is the major price determinant of wool. The 2 ways that fibre diameter is measured, the coefficient of variation of fibre diameter (CVFD) and standard deviation (SD), can provide you with valuable information on the variability of fibre diameter of fleeces.

What is SD in wool?

STANDARD DEVIATION (SD) This is the spread of individual fibre diameters around the mean fibre diameter – the lower the SD the more uniform and desirable the wool is.

What does 18.5 micron Merino wool mean?

The micron is essentially the diameter of the fiber. The lower the micron, the softer the wool. Minus33 uses Superfine 18.5 micron Merino Wool for our Midweight and Expedition products, and Ultrafine 17.5 micron for our Lightweight and Micro products.

What does CV mean in wool?

coefficient of variation
Spinning fineness (SF) is one of the wool quality characteristics widely assessed, and it is a refinement of two key wool quality attributesmean fibre diameter (FD) and coefficient of variation (CV) [19] , into a single value [20], [21].

What are the different grades of wool?

Grading Systems Three systems that describe wool grades in the United States are blood, numerical count and micron. The blood system divides all wool, from finest to coarsest, into six market grades: fine 1/2 blood, 3/8s blood, 1/4 blood, low 1/4 blood, common and braid.

What is a good micron for wool?

What is 17.5 micron Merino wool?

Superfine Merino Wool fiber (15 to 18.5 micron) is soft against the skin and has even been shown to reduce eczema symptoms. Coarse wool (greater than 30 micron) has been known to prickle and itch when the fiber ends press against the skin and trigger nerve endings know as nociceptors.

How do you judge wool quality?

There are five grades of wool according to fineness: fine, 1/2 blood, 3/8 blood, 1/4 blood, and low 1/4 blood. These are only names of grades and do not indicate the breed of the sheep. The length of staple is measured from the base to the tip of the unstretched fiber.

What are the factors that determine the quality of wool?

Answer: Many factors determine the quality (and value) of wool. These include fiber diameter, crimp, yield, color, purity, and staple length and strength. Fiber diameter, also called fineness, is the actual measurement of the thickness of the wool fiber.