Range of imperfection
Staple fiber yarns often have "imperfections" as frequent smaller yarn faults or irregularities. These can be divided into four groups: Thin places, Thick places, Neps, Small.
Reason
These types of faults are either in the nature of the raw material or originate in a suboptimal manufacturing process. Isolated faults of this type are not regarded as disturbing in the yarn but do however have a negative effect on cloth appearance when too many are present.
- Diameter-related IPI - picture box
- Length-related IPI - picture box
![004 imperfection dia](https://www.loepfe.com/public/loepfe/Pages-How-to-benefit-from-ZENITplus/004-ym-imperfection/_1180xAUTO_crop_center-center_none/004-imperfection-dia.png)
Diameter-related IPI - picture box
![004 imperfection leng](https://www.loepfe.com/public/loepfe/Pages-How-to-benefit-from-ZENITplus/004-ym-imperfection/_1180xAUTO_crop_center-center_none/004-imperfection-leng.png)