11F406KNITTING TECHNOLOGY

B.ELLAKYA(122FT103)

KNITTING BASICS

KNITTING:• Knitting is the process of intermeshing of

loops formed by a single source of yarn.

Knitted Fabric

Woven Fabric

Circular Knitting Machines • In circular knitting machines needles are fixed on a cylinder or

dial in a circular shape. • There are more than one feeders to feed yarn to needles at

different places.• In most of the cases needle bed (cylinder or dial) moves while

feeders remain stationary.• Diameter of cylinder and dial is fixed but in case of sock

knitting machines it is changeable due to structure of socks

Circular Knitting Machine

Types of Circular Knitting Machines

• Single Knitting • Double Knitting

Single Knit Machine

• In these machines needles are fixed on cylinder and sinker are fixed on sinker ring. Needles knit with the help of sinkers.

Single Knit Machine

Double Knit Machine

• In double knit machine needles are fixed on dial as well as on cylinders. There is no sinkers on this machine.

• This machine is used to knit interlock, rib and double jerseys

Double Knitting

Flat Knitting Machines

• In flat knitting machines needles are fixed on a straight plate. On this machine needle bed remains stationary while yarn feeding system called carriage moves from one end to other end

• This machine is used to knit collars, arm bands and sweaters

Flat Knitting

WARP KNITTING MACHINES

• Tricot• Raschel

Warp Knitting Machine

Warp Knitted Fabric

WEFT KNITTING STRUCTURES

• Plain knit (single jersey)• Circular Rib• Circular Interlock• Purl

Single Jersey•Face side - v shape loop appearance•Back Side - Semi circular loop•Face side - Smoother than Back Side•width wise extensibility is twice than length wise •Unroved from the course knitted last by pulling needle loop from technical back.• Curl upwards at bottom and top.•Inner and outer wear.•High Production low cost.

RIB Structure

• Reversible Structure • Vertical cords and thin ridges• Heavier • Thicker• Unroved from the last course

knitted• Higher width wise extensibility than

length wise.• Does not curl at the edges.• Neck band, collars, arm bands

sleeve, waist band, apparel materials

• Cylinder and Dial• Two set of needle• production low.

•EACH COURSE HAVING ONE FACE & ONE BACK LOOP.

•HAVING ALTERNATING WALES OF FACE & BACK LOOPS.

Purl Knit Structure

•Link - Link Appearance•Reversible appearance•Thickness Double than single jersey•Unroved from either end•Does Not Curl.•Width wise Extensibility

Interlock Structure

• Reversible • Less extensible• Does not curl at edges• unroved from the last course knitted

•cylinder(two needle),•dial(two needle)•low production•costly

ELEMENTS OF KNITTING

• Wale: Longitudinal series of loops• Course: Transverse series of loops • Loop: The basic knitted element• Needle:The knitting element• Sinker: The supporting element for knitting • Feeder: The yarn feeding element • Cylinder/Dial: The device to decide the needle

movement

ELEMENTS OF KNITTED LOOP STRUCTURES

• Knit Stitch• Tuck Stitch• Miss Stitch

Knit Stitch

Tuck Stitch

Miss Stitch

KNITTING NEEDLES

• Latch Needle• Spring Beard Needle• Compound Needle

Loop Formation Sequence of Latch Needle

Loop Formation Sequence of Spring-beard Needle

Loop Formation Sequence of Compound Needle

NeedleNeedleNeedle

Sinker Operations

NeedleNeedle

Typical Cam system of

Single Jersey