Shedding is the act of dividing the warp threads according to design into two parts, to allow the passage of shuttle/weft inserting element from one side of the loom to the other.
★ Paddle/treadle shedding (used in hand loom)
★ Tappet shedding (used in power loom)
★ Dobby shedding (used in power loom, at past used in hand loom)
★ Jacquard shedding (both hand & power loom are used now)
★ Combined shedding
★ Early picking
★ Late picking
★ Smash or Bang-off
★ Short picking
★ Harsh picking
★ Shuttle flying out
PPM = picks per minute
PPI = picks per inch
EPI = Ends per inch
RS = Reed space
★ Latch needle
★ Bearded needle
★ Compound needle
★ single jersey or plain
★ 1x1 rib
★ 1x1 inter lock
★ 1x1 purl
The loop where heads are above and hanks are below is called back loop.
The loop where heads are below and hanks are above is called face loop.
The waviness of the yarns due to interlacing of warp and weft in producing fabric is called crimp.
Interlacement of the ends and picks with each other produces a coherent structure. The repeating pattern of interlacing is called the weave.
★ Warp sett (No. of warp/inch)
★ Weft sett (no. of weft/inch)
To unwind the equivalent length of warp sheet from the warp beams with the progress of take-up during weaving.
The space occupied by a pick in fabric.
To wind the already woven fabric on the cloth roller with the progress of weaving.
To push the newly inserted weft yarn (last pick) to the fell of the cloth.
To propel the shuttle or any other weft inserting elements.
★ Modern/shuttle less loom
★ Conventional/shuttle loom
★ Hand loom
★ Power loom
Sizing is the process of giving a protective coating on the warp yarn to minimize yarn breakage during weaving.
Starch or gum
Wrong design & stitching
One weaving cycle/ loom cycle/picks cycle
Double lift dobby & Jacquard.
Hand jacquard looms to produce delicate fabrics.
The tertiary motion are as follows-
★ Warp stop motion
★ Weft stop motion
★ Warp protector
★ Weft protector
The secondary motion are as follows:
The primary motion are as follows-
Interlacement of two or more thread of yarn.
★ Bottom close shed
★ Center close shed
★ Semi-open shed
★ Open shed
★ Hand driving (hand loom) &
★ Electric motor driving (power loom)
Two sets (warp and weft).
★ Warp knitting
★ Weft knitting.
One set (warp or weft).
It is the process of producing fabric by transferring continuous yarns into interlocking loops, each row of loop hanging from the one immediately preceding it.
The process of interlacing two sets of yarns namely warp and weft, at right angle to make a fabric, according to design.