KNITWEAR

Needle Knitting

Peg- frame Knitting

Hand knitting

Warp Knitting Machine

Weft Knitting Machine

Circular Knitting Machine Flatbed Knitting Machine

Warp Knitting- concurrent or collective needle movement

Weft Knitting – sequential needle movement

Weft Knitting Warp Knitting

Warp Knitting

Warp knitted fabric on the moon [Photo credit NASA]. The photograph, takenduring the Apollo 12 mission, shows the warp knitted antenna which transmitted thetelevision pictures of the lunar landing back to Earth.The two-bar mesh fabric, weighing less than one ounce per square yard, was warp knitted from gold plated metallic yarn. [Knit O’wrTimes, July 7, 1969, 34–7].

Warp Knitting

Net-like or tubular geometries (e. g. for the textile replacement of blood vessels) can be simulated as well as spacer fabrics (e. g. for car seats, mattresses or textile reinforced material).

Warp Knitting

Warp Knitting

Flat Knitting

1. Needles are arranged in rectilinear bed.

2. Needle beds are stationary.

3. One course is knitted in one knitting cycle.

4. In one knitting cycle only one feeder is used, i.e. one yarn.

5. Limited numbers of yarn can be used

Circular Knitting

1. Needles are arranged in circular bed

2. Needle beds ideally rotates and knitting cams are stationary.

3. More than one course is knitted in one knitting cycle, which is equal to the number of feeders.

4. . In one knitting cycle numbers of feeders are used, i.e. Equal to number of feeders in machine.5. Many yarn can be used .

Difference between Flat Knitting and Circular Knitting

Flat Knitting

6. . Machine gage are from 2.5 gauge to 14 gauge , i.e. coarser gauge.

7. Yarn used are thicker or plied thicker yarn which can’t be used in circular machine

8. Thicker or coarser fabric is produced

9. Fabric comes out in open width

10. Fully fashioned garment can be made.

11. Productivity is relatively less than circular bed and ideally fabric comes out in garment panel form

Circular Knitting

6. Machine gage are from 12 gauge to 36 gauge , i.e. finer gauge.

7. Finer yarns are used.

8. Finer fabric used is produced

9. Ideally fabric comes out in tube form

10. Whole garment or seamless garment can be made.

11. Productivity is more ideally fabric is produced.

Knitting Action of the Latch Needle

Knitting Action of the Latch Needle

Knitting Action of the Latch Needle

1.The Running Position:The head of the needle hook is level with the top of the verge of the trick, the loop formed at the previous feeder is in the closed hook.

Knitting Action of the Latch Needle

2. Latch Opening • As the needle butt passes up the incline of the

clearing cam, the old loop which is held down by the sinker, slides inside the hook and contacts the latch, turning and opening it.

Knitting Action of the Latch Needle

4. Yarn feeding and latch closing The needle starts to descend the stitch cam so that its latch is below the verge with the old loop moving under it. At this time the new yarn is fed through a hole in the feeder guide to the descending needle hook as there is now no danger of the yarn being fed below the latch. The old loop contacts the underside of the latch causing it to close on to the hook.

Knitting Action of the Latch Needle

3. Clearing Height When the needle reaches the top of the cam the old loop is cleared from the hook and latch spoon on to the stem. At this point the feeder guide plate acts as a guard to prevent the latch from closing the empty hook.

Knitting Action of the Latch Needle

5.Knocking-over and loop pullingAs the head of the needle descends below the top of the trick the old loop slides off the needle and the new loop is drawn through it.

Knitting Action of the holding down sinker

Knitting Action of the holding down sinker