Knitting Technology | Weft and Warp Knitted Fabrics | Difference Between Weft and Warp Knitting

Posted by Firoz Kabir on Saturday, December 14, 2013 0


 
Knitting: Knitting is the method of creating fabric by transforming continuous strands of yarn into a series of interlocking loops, each row of such loops hanging from the one immediately preceding it. The basic element of a knit fabric structure is the loop intermeshed with the loops adjacent to it both sides and above and below it.





In the simplest form, a knit fabric is made by the longitudinal and vertical repetition of the same element, the loop, which is the basic element of the fabric.

The loop is a length of yarn that is forced to assume a curvilinear shape. It can be divided into three main sections


a) Loop top
b) Loop side and bottom
c) Half interloop (The interloop is the yarn that links two consecutive loops)






Knit fabrics are mainly categorized into two types respectively WEFT Knitting & WARP Knitting. The horizontal or vertical
repetition of loops forms the typical structures of knit fabrics, which can be divided into WEFT
KNIT FABRIC and WARP KNIT FABRIC, respectively.


WEFT KNITTING: In a weft knitted structure a horizontal row of loops can be made using one thread and the thread runs in horizontal direction.

WARP KNITTING: In a warp knitted structure, each loop in the horizontal direction is made from a different thread and the number of threads used to produce such a fabric is at least equal to the number pf loops in a horizontal row. One can say that in a warp knitted fabric the threads run roughly in a vertical direction.


What is a Course and Wales?





The word “course” defines a row of horizontal loops, belonging or not to the same yarn; “wale”
means a row of loops laid vertically one upon the other

About the Author

Md. Firoz Kabir(M.Sc in Textile Engineering)

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