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Warp knitting is defined as a loop-forming process in which the yarn is fed into the knitting zone, parallel to the fabric selvage. It forms vertical loops in one course and then moves diagonally to knit the next course. Thus the yarns zigzag from side to side along the length of the fabric. Each stitch in a course is made by many different yarns.
Weaving in, or "inlay", is a related but different technique that is used to thread an extra yarn(s) into the fabric without knitting it. The woven yarn(s) need not be the same thickness or color as the knitted yarn, and almost always (but not necessarily) follow the horizontal rows (courses) of knitting.
The vertical warp yarns are held stationary in tension on a loom (frame) while the horizontal weft (also called the woof) is drawn through (inserted over and under) the warp thread. [1] In the terminology of weaving, each warp thread is called a warp end ; a pick is a single weft thread that crosses the warp thread (synonymous terms are fill ...
During knitting, the active stitches are secured mechanically, either from individual hooks (in knitting machines) or from a knitting needle or frame in hand-knitting. Basic pattern of warp knitting. Parallel yarns zigzag lengthwise along the fabric, each loop securing a loop of an adjacent strand from the previous row.
Hand knitting patterns are designed to "flip" the fabric on every row so that the knitter consistently uses the dominant hand. However, machine knitting is consistently knit with the fabric facing the same way. Flat bed machines knit back and forth and circular machines knit continuously in the round.
Limited patterns are not, of course, a disadvantage when weaving plainer patterns, such as tabbies and twills. Jack looms (also called single-tieup-looms and rising-shed looms [ 16 ] ), have their treadles connected to jacks, levers that push or pull the heald frames up; the harnesses are weighted to fall back into place by gravity.
These meandering loops can be easily stretched in different directions giving knit fabrics much more elasticity than woven fabrics. Depending on the yarn and knitting pattern, knitted garments can stretch as much as 500%. For this reason, knitting was initially developed for garments that must be elastic or stretch in response to the wearer's ...
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