Care sunt defectele tipice în inspecția țesăturilor tricotate?

În continuare este prezentată o listă a unor imperfecțiuni care apar frecvent în inspecția țesăturilor tricotate. Aceste defecte ale țesăturii sunt de obicei cauzate de o defecțiune a mașinii de tricotat, sau poate fi cauzată și de defecte de fire sau vopsirea necorespunzătoare a țesăturii, tipărirea sau finisarea.

Defects in knitted fabric inspection

Barre – streaks or bands in the fabric, cauzate de diferențele de mărime a firului, tensiune pe fire sau țesături, culoare, strălucire sau contracție, de la o secțiune a pânzei în zona adiacentă. The bands are horizontal and are found only in weft knit fabrics.

Birdseye sau Tucking Defect – unintentional tucking caused by a bent latch on the latch needle or by the needle not being raised to the proper height for the old loop then to be case off.

Boardy – very harsh or stiff hand, caused by stitches being too tight or yarn being too thick.

Bowing – design or line effect which curves across the fabric, distortion caused by the take-up mechanism of the knitting machine, or through malfunctions in tentering.

Broken Filaments sau Fire –this defect is self-explanatory, which means one or more filaments or yarns are broken.

Cockled Fabric – fabric puckers and does not lie flat; caused by uneven stitches or uneven yarn size.

Drop stitch – an unknitted stich, caused by a stich being too loose or the yarn carrier not being set properly.

Float – unwanted miss-stitch(es) caused by needle(s) not raised to receive a new yarn.

Needle Line – lengthwise marks or lines in the fabric resulting from a wale which is tighter or looser than the others. This is caused by a needle being tight in the slot or from a defective sinker.

Press-Off – large hole in the fabric, caused by a yarn breaking at a particular feed so knitting cannot occur.

Run sau Ladder – a series of dropped stitches in a wale.

Skewing – design or line effect which is straight across in the fabric, but not perpendicular to the fabric edges.

Sleazy – term used to describe a flimsy or under-constructed knit fabric, one lacking in “body”.

Stop Mark – a horizontal fabric streak resulting from when the knitting machine was stopped. It is caused by a tension difference in the yarns.