Stitch Length Measurement Procedure

Stitch Length Measurement Procedure
Rofiquzzaman Raju
Fabric Technologist,
B.J.Group, Mawna, Gazipur
Email: rtextile.finance@gmail.com



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
Fig: Stitch length
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

0 comments:

Comment here

Textile Learner is the largest Textile Blog over the net. It is an ultimate reference for textile students. It describes textile articles in comprehensive. It also supplies news on latest textile technology, educational institute news of the world.