Circular knitting

What is Circular knitting?

Circular knitting is a technique for forming a textile surface from loops on a circular bed of needles. Knitting in the broader sense forms fabric through series of intermeshed loops, which are the structure’s building blocks. Because the technique is divided into weft knitting and warp knitting, “circular” here designates the equipment and tubular geometry of weft knitting, not every stretchy fabric.

The logic differs from weaving: the recurring element here is the loop, while knitting names the wider process family. Knitted fabrics are generally described as more stretchable than woven fabrics; that does not promise a fixed level of stretch for every article. Yarn, structure, needle and settings remain variables in the result.

How do the cylinder and needles form the fabric?

In a circular weft-knitting machine, the cylinder carrying the needles rotates continuously and creates the movement needed to form loops. The circular arrangement turns successive formation into a tubular construction; Groz-Beckert’s technical page describes the output as continuous tubular fabric produced by circular knitting needles.

The needle is the machine element that forms the loop. The technical classification includes latch, bearded and compound needles, selected according to the machine type. This distinction matters in a technical specification: writing only “circular knit” does not record the equipment architecture, needle type or intended structure. Spinning supplies the yarn, while circular knitting organises that yarn into a surface through formation cycles.

Which structures and applications are in scope?

Weft knitting forms loops across the fabric width and can be made from a single supply package. Warp knitting forms loops along the fabric length and receives a sheet of parallel yarns from one or more warp beams; this is a difference in principle, not only a visual difference in fabric shape.

Circular technology is described for apparel such as undershirts, T-shirts and sportswear. Different structures and gauges are connected with a wide range of designs and functions. Therefore jersey and rib knit are useful graph relations, but they should not be treated as automatic names for every fabric produced on a circular machine. An article’s performance should also not be inferred solely from its tubular construction.

Santoni’s SMDJ-2T, an electronic double-knit circular machine, illustrates a specific industrial scope: seamless garments in continuous tubular fabric and/or separated pieces. The machine also provides needle-by-needle selection in the cylinder and dial for different rib types and links structures. This places flat knitting and elastane as research connections, not equivalents of the technique.

Why does the technique matter in fashion development?

Circular knitting matters because it connects a machine architecture with concrete decisions about surface, shape and construction. For development work, a quality control record can specify the intended structure, gauge, yarn, feeding and fabric or garment destination; these are specification orientations, not results guaranteed by the technique. The scope also helps distinguish continuous tubular fabric, separated pieces and seamless construction before samples are compared.

The technical scope explains circular knitted-fabric formation and its variants, without asserting superiority, savings, sustainability or universal suitability. A machine or application description remains tied to the scope in which it is presented.