Knitting is the fabric manufacturing technique by the interloping of yarns. So it would be only one set of the yarns is used coming from only one direction, which might be horizontally (in weft knitting) and vertically (in warp knitting).
Knitted fabric, it is formed through loops and stitches. The circle is the fundamental element of all the knitted fabrics. A stitch is the smallest stable unit of all the knitted fabrics. It is the basic unit consisting of a loop held together by being inter meshed with the previously formed loops. Interlocking loops form it with the help of hooked needles. According to the purpose of the fabric, the circles are loosely or closely constructed. The loops are interlocked in the fabric, they can easily be stretched in any direction, even when a low-grade yarn having little elasticity is used.
The feature of warp and weft knitting:
1. Warp Knitting
Warp knitting is making fabric by forming the loops in a vertical or warp-wise direction, the yarn is prepared as a warp on beams with one or more yarn for each needle. The fabric has a flatter, closer, less elastic knit than weft knit and often runs resistant.
2. Weft Knitting
Weft knitting is the most common type of knitting, it is the process of making fabric by forming a series of connected loops in a horizontal or filling-wise direction, produced on both flat and circular knitting machines.
Differences in warp and weft knitting during production:
1. In weft knitting, only one set of yarn is used that form courses along the weft-wise direction of the fabric, while in warp knitting, many sets of the yarns are used coming from the warp-wise direction the fabric.
2. Warp knitting differs from weft knitting, basically in that each needle loop has its thread.
3. In warp knitting, the needles produce parallel rows of loops simultaneously that are interlocked in a zigzag pattern. In contrast, in weft knitting, the needles produce loops in the width wise direction of the fabric.
4. In warp knitting, the stitches on the face of the fabric appear vertically but at a slight angle. While in weft knitting, the stitches on the beginning of the material appear vertically straight, having v-shaped.
5. Warp knits can yield cloth with stability almost equal in woven fabrics, but Weft is very low stability, and fabric can be stretched easily.
6. The production rate of warp knitting is very high than that of weft knitting.
7. Warp knits do not ravel or run and are less susceptible to sagging than weft knits which are easily vulnerable to snagging.
8. In weft knitting, the needles move in the cams having tracks in a circular direction, while in warp knitting, the needles are mounted on a needle board that can only move up and down.
What is the possible product usage for these knitting fabric?
Weft Knitting:
1. Tailored garments, like jackets, suits, or sheath dresses, are made from weft knitting.
2. Interlock knit stitch is lovely for making T-shirts, turtlenecks, casual skirts, dresses, and children’s wear.
3. Seamless sock, knitted in tubular form, is produced by circular knitting machines.
4. Circular knitting is also used to produce sports fabric with the dimensional stability.
5. Flat knitting is used for knitting collars and cuffs.
6. Sweaters are also made from flat knitting and are joined to sleeves and collar necks using special machines.
7. Cut and sewn garments are also made from weft knitting,, which includes T-shirts and polo shirts.
8. Highly textured fabrics with complicated patterns are made using tuck stitch.
9. Knitted hats and scarves are used in the winter season are made through weft knitting.
10. Industrially, metal wire is also knitted into a metal fabric for a wide range of uses,, including the filter material in cafeterias, catalytic converters for cars, and many other benefits.
Warp Knitting:
1. Tricot knit is one of warp knitting, used to make the lightweight fabrics, usually innerwear like panties, brassieres, camisoles, girdles, sleepwear, hook & eye tape, etc.
2. In apparel, warp knitting is used for making sportswear lining, tracksuits, leisurewear, and reflective safety vests.
3. In household, warp knitting is used for making mattress stitch-in fabrics, furnishing, laundry bags, mosquito nets, and aquarium fish nets.
4. Sports and industrial safety shoes’ inner linings and inner sole linings are made from warp knitting.
5. Car cushion, headrest lining, sunshades, and lining for motorbike helmets are being made from warp knitting.
6. For industrial uses, PVC/PU backing, production masks, caps, and gloves (for the electronic industry) are also made from warp knitting.
7. Raschel knitting technique, a type of warp knitting, is used for making as an unlined material for coats, jackets, straight skirts, and dresses.
8. Warp knitting is also used for making three-dimensional knitted structures.
9. Fabrics for printing and advertising are also produced from warp knitting.
10. The warp knitting process is also being used for the production of bio-textiles. For example, a warp knitted polyester cardiac support device has been created to limit the growth of diseased hearts by being installed tightly around the heart.
Post time: Sep-28-2021