11 2.6 Tightness factor Fabric tightness is the relative looseness or tightness of knitted fabrics ,so as it implies looseness and tightness of a knitted fabrics, the only things that can varies this is the loop length which is also known as stitch length.
What is the formula for the tightness factor?
3. Estimation of tightness factor of the knitted fabric. Generally the tightness factor of the knitted fabric is given [21] as follows:(14) Tightness Factor = tex L where L = loop length in mm.
How do you calculate loop length?
Loop length is found by dividing the stretched yarn length by the number of loops in one course and expressed as follows: Loop length ( ) = uncrimped yarn length in one course/number of loops in one course ( ) [3].
How do you measure the width of a knitted fabric?
Calculations in the knitting process
yard × Width of the fabric lb Width constant = 36 × Constant × Weight in lb of 1 inch of yarn × Number of needles Width constant = 36 × Length constant × Weight of lb of one inch of yarn in lbs × Number of needles .
How do you calculate wales per inch?
Ans.: TF = 14.7 = √tex/loop length cm Loop length inches = l = 0.146 Wales/inch = KW / l = 4.29/0.146 = 29.38 Machine gauge for yarn of 20s Ne = 20 Open width of tube of diameter 26″= 81.68″ Number of wale lines in fabric = Number of needles in machine = 29.38 x 81.68″ = 2400 = π x machine diameter x machine gauge …
How do you calculate course per inch?
Take the fabric & marking 1 inch with the ball pen according to the Course & Wales wise of a knitted fabric. Then set the marking point with the multiplier scale & counting the CPI & WPI of knitted fabric in 1inch. Wales per inch and course per inch is counted by the magnifying counting glass.
How do you find the GSM of a knitted fabric?
– Multiply the average weight of swatches by 100 to calculate GSM of the sample fabric. (Normally, the area of round GSM cutter is 1/100 square meters.)
What is a loop shape?
A loop is a roundish, coiled shape, like the shape a piece of string or rope makes when it crosses itself. … Loops are ovals or circles and are often made from rope or other fibers, like the loop at the end of a cowboy’s lasso.
What is loop length in telecom?
In telephony, the local loop (also referred to as the local tail, subscriber line, or in the aggregate as the last mile) is the physical link or circuit that connects from the demarcation point of the customer premises to the edge of the common carrier or telecommunications service provider’s network.
What is loop length Fusion 360?
The “Loop length” is the face outer contour length. 0 Likes. Reply. Message 3 of 6. bill.
What are standard fabric widths?
Width. The most common width for fabric today in the United States is 54 inches; however, 48-inch-wide fabric is found both here and in Great Britain, and 40- and 42-inch widths are standard for many imported fabrics, like Indian silks.
Is the width of fabric from selvage to selvage?
Quilting fabrics are usually 42 to 44 inches wide when measured across their width from selvage to selvage. It is easy to see the selvage edges, although they often change in appearance along their lengths. … The name of the designer and the design’s name are often printed in the selvage, too.
Does width of fabric include Selvage?
Cuttable width is the measurement of fabric from side to side, less the selvedge. … The cuttable width is the width of the fabric, less the woven edge. Whoever makes your marker (usually the pattern maker or pattern grader) will need this measurement.
Is called the heart of knitting machine?
In all knitting machines, the main element for the intermeshing of loops is ‘the needle.
How do you calculate Lycra percentage?
Shortcut Method:
- Lycra%= [(Lycra denier/lycra draft)/Resultant yarn denier] × 100%
- Lycra%= [(Lycra denier/lycra draft)/5314.9/Resultant yarn Ne] × 100%
- Lycra%= [(yarn count (Ne) × lycra denier)/(5314.9 × lycra draft)] × 100℅.
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What is EPI and PPI in fabric?
For a newbie, EPI stands for Ends per inch and PPI stands for Picks per inch. Where Ends is known as Warps and Pick are known as weft yarn.