Friday, September 27, 2013

Woven Fabric Faults


Woven fabric faults in details:
Most defects in cloth occur while it is woven on the loom. Some of these fabric defects are visible, while others are not. Again some fabric defects may be rectified during weaving and after weaving while others are not. Some common fabric defects are given below:

1.    Broken Ends: If a warp yarn is absent in the fabric for a very short or long distance and then this fabric defect is called broken ends.

2. Broken Picks: If a weft yarn is absent in the fabric for a very short or long width, and then this fabric defect is called broken picks.

3. Floats: It is a kind of defect where a warp or weft yarn floats over the fabric surface for a few centimeter lengths due to missing of interlacement of two series of yarns.

4. Weft Curling: The weft curling is caused by inserting highly twisted, weft yarn or weft running too freely, causes twisted of weft yarn and appear on the surface of fabric.

5. Slugs: When the weft yarn is unclean and contains slugs and its diameter s irregular, the defect appea4rin on the cloth is known as slugs.

6. Stitching: It is a major defect particularly in good quality cloth. It is a common fabric fault in which the ends and the picks are not interlaced according to correct order of the pattern.

7. Irregular Pick Density: If the pick density that is pick per inch varies due to mechanical fault then thick or thin place may be formed in the fabric.

8. Hairy Cloth: The fibers in the yarn have been roughened before, during or after weaving.

9. Holes: If there is any small holes present in the fabric and then it is a major fabric defect.

10. Oil Spot: Oil Spot on the fabrics are caused by too much oiling on loom parts r from other sources. However, oil stains in most fabrics may be removed by scouring process.

11. Starting Mark: The fault known as “Starting Place” in cloth/fabric are caused as a result of stopping and starting a loom. The fault appears width way of the fabric. There are some other faults which are visible after dyeing. Few common faults of these categories are mentioned below.

12. Shedding: When a role of fabric is dyed, depth of shade of color may vary from one place to another place along the length of the fabric is known as shedding.

 13. White Spot: If the grey fabric is made of cotton and in the cotton, polyester or other synthetic fibres is mixed to a negligible amount, after dyeing the polyester fibre remain white, showing white spot in the fabric.

14. Running Stripe Shedding: In the solid color dyed fabric sometime narrow stripe like color shedding affect is observed due to dyeing fault is known as running stripe shedding.

15. Colored Spot on Fabric: Due to knots, neps , slubs etc, present in the fabric, after dyeing, those places appears as a colored spot.

This is all about Fabric Defects.

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