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Summary Basic Textiles 4: Knitting and Non-wovens $6.95
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Summary Basic Textiles 4: Knitting and Non-wovens

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Summary Basic Textiles 4: Knitting and Non-wovens part of the bachelor program Fashion & Textile Technologies at Saxion University.

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  • May 9, 2022
  • 24
  • 2019/2020
  • Summary

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By: jessicas3 • 6 months ago

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Basic Textiles 1.4
KNITTING

Circular knitting


Classification
DIAMETER
1 inch very small
2-7 inches small
7-36 inches large
>36 inches mammoth

RELATIVE MOVEMENT between needle beds and cam systems
o Needlebed stands still, cams rotate
o Needlebed rotates, cams stand still

CONSTRUCTION of the needlebed
o Cylinder (RL)
o Cylinder + Cylinder (LL) lower = front upper = back stitches
o Cylinder + Dial (RR)




RL LL RR




Gauge= Number of needles / inch x pi

FLAT VS. CIRCULAR

o Needlebeds are round
o Mostly tubular fabrics
o Mostly the needlebeds move, not the cams
o Multiple knitting systems (6 to 360)
o Higher production

# threads determines # rows

,RL KNITTING MACHINE



Sinkers move with the help of a cam.

Symmetrical allows the needles to turn both ways.
Asymmetrical does not do this. Needlebed turns
in 1 direction.




The cam
o Cams need to be able to work both ways
o Cams are asymmetrical
o 4 needle lanes (4-track)
o Short and long needles




Needles
Bouncing is a problem for needles in a cam. Improve by:

o Making the cam more smooth
o Providing the needle with shock absorber (meander
needle)
o Bent steel needles (needle shaft is bent in opposite
direction of cylinder’s direction of rotation)

Centrifugal force: makes the latches stand out
Lateral air resistance: needles are bent, therefor don’t
connect to needle head well.

, MEANDER NEEDLES

o Low friction
o Bouncing is reduced
o Energy savings




FULL SHANK NEEDLES
LOW PROFILE




Feeding systems
SIDE CREEL UPPER CREEL




When a lot of threads are used, an isolation room could be an option. Then the creel is placed in a
separate room from the other machines.



Mechanical systems
Mechanical systems use rubber bands or belts.

Tape Feeding System




Electronic system
Electronical individual systems.


Thread guide and feeding
2 functions: inlay of the yarns on the needles and plating.

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