Types of weft knitting m/c:
According to the end product, the weft knitting m/c may be
broadly classified as either:
–Fabric m/cs
–Garment length m/cs
According to their frame design and needle
bed arrangement, the weft knitting m/c may be broadly
classified as either:
–Straight bar frame m/cs
–Flat knitting m/cs
–Circular knitting m/cs
Features of
fabric
m/cs:
•Large diameter, circular, latch needle m/cs (also known as
yarn goods or piece goods) knit fabric, at high speed.
•The fabric is manually cut away from the m/c usually in roll
form after a convenient length has been knitted.
•Most fabric is knitted on circular m/cs either single-cylinder
(single jersey) or cylinder and dial (double jersey) of the
revolving needle cylinder type, because of their high speed
and productive efficiency
•Sinker wheel and loop wheel frames could knit high quality
specialty fabrics with bearded needles although circular m/cs
employing bearded needles are now absolute, the
production rates of these m/cs were uncompetitive
•Unless used in tubular body-width, the fabric tube
requires splitting into open-width
•The fabric is finished on continuous finishing equipment
and is cut-and-sewn into garments or it is used for
household and technical fabrics
•The productivity and patterning facilities of fabric m/cs
vary considerably.
•Generally; cam settings and needle set-outs are not
altered during the knitting of the fabric
•2 stationary needle bed in flat knitting m/c arranged in an
inverted V formation
•Latch needle is used
•Angular cam of a bi-directional cam system used
•There is a separate cam system for each needle bed
•The two cam systems linked together by a bridge, which
passes across from one needle bed to the other
•Carriage with determined yarn carrier issued
•Cam system is attached to bottom side of carriage
•The flat m/c is the most versatile of the weft knitting m/c
•Fabric produce with finer to coarser yarn
•The operation and supervision of the m/c is simple
•The stitch length range is wide and possibly of changing the
m/c gauge
•Trimmings, edging, collars, to shaped panels and integrally
knitted complex garments and other articles
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