Classification of yarn yarn classification. Textile yarn. Yarn count.
Yarn Weight
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Yarn weight Yarn weight refers to the thickness of yarn used by knitters, weavers, crocheters and other fiber artists. Changing yarn weight or needle size can have a significant impact on the finished project, so standardized systems have been spread about, as well as conversion systems for regional standards (especially needle sizes [1] ).Yarn weight is important in achieving the correct gauge or tension for a particular project and ca n help with yarn substitution. The Craft Yarn Council of America has developed a system that seeks to standardize the labeled we ights of yarn. [2] Most yarns state their weight on the ball band. Some brands use a standardized numbering system that uses 7 ranges of relative thickness of yarn. One way of determining the weight of an unknown yarn is to use the wrapping method. Wrap the yarn around a large needle or a ruler. Make sure the yarn lies flat. Push the yarn together so there are no ga ps between wraps. Smooth it out so it is neither too loose nor too tight. Measure the number of wraps per inch (2.5 cm). For better accuracy, measure the wraps at the centre of your yarn sample. Standard Yarn Weight System Yarn Type (US) Ply (UK, NZ, AU) [3] m/100g Wraps Per Inch (WPI) [3] 0 or Lace Thread, Cobweb and Lace 1 - 3 ply 600-800 18+ wpi 1 or Superfine Fingering 4 ply 400-480 14 wpi 2 or Fine Sport 5 ply 300-400 12 wpi 3 or Light DK 8 ply 240-300 11 wpi 4 or Medium Worsted 10 ply 120-240 9 wpi 5 or Bulky Bulky 12 ply 100-130 7 wpi 6 or Super Bulky Super Bulky Less than 100 5-6 wpi Different terminology is used in different countries: USA UK Australia Suggested needle (mm) Laceweight 1 ply 2 ply 1.5–2.25 mm Fingering 2 ply 3 ply 2.25– 3 mm Sock 3 ply 3 ply 2.25— 3.25 mm Sport 4 ply 5 ply 3.25— 3.75 mm DK/Light Worsted DK 8 ply 3.75— 4.5 mm Worsted Aran 10 ply 4.5— 5.5 mm
Transcript of Yarn Weight
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Yarn weight
Yarn weight refers to the thickness of yarn used by knitters, weavers, crocheters andother fiber artists. Changing yarn weight or needle size can have a significant impact on
the finished project, so standardized systems have been spread about, as well asconversion systems for regional standards (especially needle sizes[1]).Yarn weight is
important in achieving the correct gauge or tension for a particular project and can helpwith yarn substitution. The Craft Yarn Council of America has developed a system that
seeks to standardize the labeled weights of yarn.[2] Most yarns state their weight on the
ball band. Some brands use a standardized numbering system that uses 7 ranges of relative thickness of yarn.
One way of determining the weight of an unknown yarn is to use the wrapping method.
Wrap the yarn around a large needle or a ruler. Make sure the yarn lies flat. Push the yarn
together so there are no gaps between wraps. Smooth it out so it is neither too loose nor too tight. Measure the number of wraps per inch (2.5 cm). For better accuracy, measure
the wraps at the centre of your yarn sample.
Standard Yarn
Weight SystemYarn Type (US)
Ply (UK, NZ,
AU)[3] m/100gWraps Per Inch
(WPI)[3]
0 or LaceThread, Cobweb
and Lace1 - 3 ply 600-800 18+ wpi
1 or Superfine Fingering 4 ply 400-480 14 wpi
2 or Fine Sport 5 ply 300-400 12 wpi
3 or Light DK 8 ply 240-300 11 wpi
4 or Medium Worsted 10 ply 120-240 9 wpi
5 or Bulky Bulky 12 ply 100-130 7 wpi
6 or Super Bulky Super BulkyLess than
1005-6 wpi
Different terminology is used in different countries:
USA UK Australia Suggested needle (mm)
Laceweight 1 ply 2 ply 1.5–2.25 mm
Fingering 2 ply 3 ply 2.25– 3 mm
Sock 3 ply 3 ply 2.25— 3.25 mm
Sport 4 ply 5 ply 3.25— 3.75 mm
DK/Light Worsted DK 8 ply 3.75— 4.5 mm
Worsted Aran 10 ply 4.5— 5.5 mm
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Bulky Chunky 12 ply 5.5– 8 mm
Super Bulky Super Chunky 14 ply 8 mm and up
Fabric
The following equation may be used to determine the weight of warp and weft requiredfor a particular fabric:
• Weight of warp = (0.65 x qty. of fabric (metres) x no. of warp ends) / count
If there are two colors in the warp, use the following equations:
• Weight of color A (kg) = (0.65 x qty. of fabric (metres) x no. of warp ends of
color A) / count of color A
• Weight of color B (kg) = (0.65 x Qty. of fabric (metres) x no. of warp ends of
color B) / count of color B
If the counts of two warps are the same:
• Weight of color A (kg) = (total weight of warp reqd. x no. of ends of color A) /
total no. of warp ends
• Weight of color B (kg) = (total weight of warp reqd. x no. of ends of color B) /
total no. of warp ends
or
• Weight of color (B) = total weight of warp reqd. - weight of color A• Weight of weft = (0.6 x qty. of fabric (metres) x PPI x reed space) / count
If there are two colors in the weft:
• Weight of color A (kg) = (0.6 x qty. of fabric (metres) x PPI of color A x reed
space) / count of color A
• Weight of color B (kg) = (0.6 x qty. of fabric (metres) x PPI of color B x reed
space) / count of color B
or
• Weight of color (B) = total weight of weft reqd. - weight of color A
• Another formula
1. Reed x width / 7000 = Ans2. Ans x quantity (mtr) / count = The weight required(Kg)
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