Warp knitting is a family of knitting methods in which the yarn zigzags along the length of the fabric; i.e., following adjacent columns, or wales, of knitting, rather than a single row, or course. For comparison, knitting across the width of the fabric is called weft knitting.
Can warp knitting be done by hand?
Warp knitting requires the use of a machine, it cannot be done by hand. Warp knitting is generally used for knitting fibres such as Aramid, Carbon and glass as it puts less pressure on them and uses more careful handling than weft knitting.
Is yarn preparation required for warp knitting?
The use of mainly synthetic yarns and the moderate tensions applied to the knitting yarns, ensures an efficient operation without warp sizing, which has to be applied to most weaving yarns. Yarn preparation is a simple winding of yarn ends onto warp beams in a process called warping.
What is difference between weft and warp knitting?
“Warp” is a series of threads that run from the front to the back, and “weft” is a series of threads that run in a pattern through the warp. Weft is a yarn that runs back and forth whereas a warp is that which run up and down. Continuous yarn is used in weft knitting for forming courses and rows of loops.
What are the advantages of warp knitting?
Producing textiles through the warp knitting process has the following advantages: higher productivity rates than weaving. variety of fabric constructions. large working widths.
Which type of needles are used in warp knitting?
The two types of warp knitting are raschel, made with latch needles, and tricot, using bearded needles.
What is warp knitting machines?
Warp knitting is defined as a loop forming process in which yarn is fed into knitting zone , parallel to fabric selvedge . … Every needle is fed by a separate yarn for loop formation . In order to connect the loops into a fabric , the yarns are shifted between the needles .
What is warp knitting structure?
Warp Knit Structure
Warp knitting is defined as a stitch forming process in which the yarns are supplied to the knitting zone parallel to the selvedge of the fabric, i.e. in the direction of the wales. In warp knitting, every knitting needle is supplied with at least one separate yarn.
Is warp drive faster than light?
A spacecraft equipped with a warp drive may travel at speeds greater than that of light by many orders of magnitude. … In contrast to hyperspace, spacecraft at warp velocity would continue to interact with objects in “normal space”.
What is Underlap in warp knitting?
Underlap is the line segment connecting two loops knitted by the same warp yarn. Overlap is a semicircle and is formed when yarns lap before the needle. Loop roots are the segments connecting the technical back and technical face. The segments linking the overlap and loop roots are called loop arms.
How many sets of yarns are required for knitting?
In knitting, two sets of yarn are used to make a piece of fabric.
What is weft knitting used for?
Weft knit – Produced when knitting with two needles, it uses one continuous yarn that produces horizontal rows of loops that interlock. It frays, can ladder and lose its shape when worn frequently. It is used to produce most garments, such as T-shirts, tights and jumpers.
What is tuck stitch?
A tuck stitch is formed when a needle already holding a loop, receives a further loop (Fig. 3.6). This second loop is tucked in behind the held stitch. Fabrics with tuck loops have reduced length elasticity but increased width as the tuck loops pull down the held loops and cause them to spread (Fig.
Which is stronger warp or weft?
Warps yarns are stronger compared to weft yarns. During the weaving warps are held under high tension, moves up and down for shed formation. Warp yarns are finer than weft yarns. The weft yarn is inserted over-an-under the warp yarns.
Is Jersey a warp knit?
With a few exceptions, weft knits have moderate to great amounts of crosswise stretch and some lengthwise stretch. Some jerseys, however, have little or no crosswise or lengthwise stretch. … As with warp knits, weft knits are made from many different fibers and come in many weights.