What is Stitch Length? Stitch length is the width of the stitch made by a swing needle machine. It is usually expressed in millimeters, and ranges from 0 to 6 or 7 on most machines. The larger the number, the longer the stitch. The stitch length is measured by measuring the number of lengths of thread found within one inch.
Stitch Length Measurement Procedure At first select or count 100 (hundred) wales and identify the both ends. Then open or unroll one yarn and measure the length of unroll yarn that is identified. Then stitch length is measured by following formula
Suppose,
Length of 100 wales s/j yarn = 142.2 mm
Stitch length = (284.4 ÷ 100) = 2.844 mm
Stitch Length Measurement of Normal (Three Thread) Fleece
No. of wales = 100 (Counted vidually on face side )
Length of grey melange yarn of 100 wales = 454 mm
Stitch length of grey melange yarn = ( 454÷100 ) mm = 4.54 mm
Length of polyester yarn for 100 wales = 280 mm
Stitch length of polyester yarn = ( 280÷100 ) mm = 2.80 mm
Length of Carded Ring yarn (10s )100 wales = 162 mm
Stitch length of Carded Ring yarn = ( 162÷100 ) mm = 1.62 mm
Determination of Yarn Percentage of Three Thread Fleece At first take a sample of three thread fleece fabric. Then unroll the yarn and keep them separately of same yarn. Then measure the weight of total unrolled yarn and also measure the weight of each invidual unrolled yarn. Then determine the each yarn percentage by following formula
Suppose,
A three thread fleece fabric consists of grey melange, polyester and carded yarn.
Total weight of different unrolled yarn = 0.94 gm
The unrolled grey melange yarn weight = 0.40 gm
The unrolled polyester yarn weight = 0.11 gm
The unrolled carded yarn weight = 0.43 gm
% of grey melange yarn = ( 0.40 ÷ 0.94 ) × 100 = 42.55
% of grey melange yarn = ( 0.11 ÷ 0.94 ) × 100 = 11.70
% of grey melange yarn = ( 0.43 ÷ 0.94 ) × 100 = 45.74
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