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USTER QUANTUM 2 - PP Option Product Detail |
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POLYPROPYLENE – COLOR DOES NOT MATTER |
Commonly, under the term “foreign fiber detection”, the elimination of all foreign matter in a yarn, which exhibits a contrast to the yarn, is understood. White and transparent polypropylene fibers until today represented one of the biggest concerns in foreign fiber clearing. The reason is these defects cannot be seen during spinning since they are the same color as the yarn. They become visible only after dyeing or finishing in the woven or knitted fabric. Polypropylene defects also appear in various forms. They are sometimes fully embedded in the body of the yarn and sometimes attached to the surface.
Colored polypropylene fibers are also equally disturbing as white, but could be partly detected with regular foreign fiber clearing. In practice though, there are quite a few colored PP defects that can not be detected since they often exhibit very less contrast. The demand over the years has been to find a solution that meets all these challenges.
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POLYPROPYLENE DETECTION – COLOR DOES NOT MATTER |
USTER® QUANTUM 2 addresses one of major reasons for claims in spinning mills; detection and removal of white or colored polypropylene defects.
The polypropylene detection is based on a unique measuring technique utilizing the capacitive measuring principle, patented by USTER®. The system even ensures detection of white and transparent polypropylene, because the only color that matters is the one you cannot see. |
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UPGRADABLE – PROTECTED INVESTMENT |
USTER®’s polypropylene detection is only possible with a combination of special capacitive and foreign fiber sensors. Existing QUANTUM clearers can be upgraded to USTER® QUANTUM 2 with polypropylene defection – profit immediately from the PP Option. |
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SIMPLE SETTINGS – CLEAR REPORTING |
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Easy-to-understand settings allow a precise and flexible application. Reporting of polypropylene cuts per article, group or spindle on the control unit and USTER® EXPERTCAY permit easy interpretation of clearing performance.
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POLYPROPYLENE DISTRIBUTION –
ONLY A FEW ADDITIONAL SPLICES TO EXPECT |
White polypropylene fibers are much less common compared to colored foreign fibers, as well as basic yarn faults. However, polypropylene defects, especially white and transparent, are extremely disturbing. Even if they are few, they have to be eliminated.
The amount of disturbing polypropylene fibers reduces from carded to combed and from coarse to fine yarns. The number of polypropylene cuts is therefore not significant when compared to the total splices per 100 km. In fine counts, polypropylene is usually removed during combing or will result in end breaks during ring spinning.
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EXPANDED CAPABILITIES – INCREASED PROTECTION |
The higher foreign fiber distribution in the cotton of several origins often forces less sensitive foreign fiber clearing limits. Additionally, some colored plastic foreign fibers exhibit low contrast to the basic yarn. It is required to eliminate the most disturbing defects such as colored plastic fibers even in such conditions. With an additional channel for detection of polypropylene defects this possibility is realized. The yarn card image here shows red and green colored polypropylene defects, which were detected by the USTER® QUANTUM 2 polypropylene channel. The foreign fiber dark settings in this case were set less sensitive by the spinning mill due to a higher contamination level in the cotton. This additional protection is a major assurance when production pressures force relaxed foreign fiber settings. Polypropylene, the last barrier in foreign fiber clearing, is under control – USTER® QUANTUM 2 assures quality and makes your yarn more valuable! |
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CONTINUOUS MONITORING – ASSURED QUALITY |
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Detection of invisible and white foreign fiber defects is normally based on the inspection of dark dyed fabrics. This quite often leads to claims just before the final garment process and is therefore extremely expensive. To assess this, 3,000 km length of conventional foreign fiber cleared yarn was processed into a knitted fabric in an area of 200 m2. After dyeing, 37 polypropylene fibers became visible, which correspond to 1.2 PP fibers per 100 km yarn. The test was repeated with USTER® QUANTUM 2 polypropylene cleared yarn out of the same raw material batch and processed and dyed into a knitted fabric of 200 m2. Only 4 remaining polypropylene fibers were identified in the fabric. |
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