Causes Of Defects In Knitted Fabrics

Wrong organization defects.

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The defect is due to the failure of the loom thread to move in accordance with the specified sequence, resulting in the weft yarn not interlaced with the warp, but floating on the warp.

Drop the defects.

This situation refers to the phenomenon that the warp drawn by the thread is floating towards the front of the fabric or behind the fabric due to the stop of the loom's filament.

The harness is wrong.

This refers to the fact that one or more warps drawn from the loom thread are opposite to the weave design.

Hole defects (Hole).

The meaning of this term is very clear and needs no further description.

Pull in the blemished.

This refers to the fact that the shuttle loom is pulling the normal weft into the fabric while pulling an extra weft into the fabric.

On conventional looms, this defect usually occurs on the side of the weft bank.

The main reason for this phenomenon is that the thread holding device has not been able to clamp the weft from the outer winding tube after the yarn is replaced.

The coiling tube is long enough to allow the side supporting wire cutter to cut off the yarn.

Twist the weft defect.

This situation refers to a place where the weft yarn is too loose to cause itself to twist itself in a short distance.

The reasons for this phenomenon are:

The shuttle is not properly packed, the weft fork is not working properly; the power of the shuttle rod is too high; the weft yarn is too twisted and the twist of the weft is not set properly.

Knot defect.

This situation means that the ends of the yarn are tied together.

Instead of weft.

This fabric defect refers to the color file appearing in the width direction of the fabric, which is caused by tension accumulation on the loom shuttle before changing the weft yarn.

This defect is most common in dyed fabrics.

Flying flowers are woven into defects.

This situation means that the waste accumulated on the loom enters the fabric through airflow or loom shuttle.

Shrinkage defects.

This situation means that before the reed is scraped, the weft yarn will instantly entangle the warp knot or entangled other protrusions.

This situation will result in a short ring weft defect on the surface of the fabric.

Loose eye.

In terms of knitted fabrics, this situation means that the loops of the coil are larger than the normal knots due to the lack of proper tension of the yarn.

Stop color defects.

This term is used to describe the obvious color files on the fabric resulting from the machine being stopped during the dyeing and finishing process.

Generally speaking, this defect is manifested as a significant color file in the width direction of the fabric.

Warp spider web defect.

This refers to the fact that the warp and weft yarn are properly interlaced due to the entangled warp yarn.

The reason for this phenomenon is that the loom can not stop when the yarn breaks, or it may be because of the yarn coming from other places into the loom.

The harm of meridional spider web may be small or destructive.

Heald light.

This refers to the fact that one or more warps drawn by a reed are opposite to the design.

Reed refers to the fact that one or more warps drawn by a reed are opposite to the design.

Colored yarn.

Yes

This refers to the fact that the colored yarn pulled from the loom thread is opposite to the color pattern and / or weave design.

For warp knitted fabrics, this situation is that the yarn drawn by the guide rod is contrary to the pattern design.