UT4_Application Report - Uster Technologies

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THE YARN QUALITY ASSURANCE SYSTEM3.16 Is the USTER ® QUANTUM 3 classification comparableto the USTER ® STATISTICS?The Quality Data such as the coefficient of variation of the yarn evenness,the thick places, thin places, classification results and hairiness can becompared with the USTER ® STATISTICS. It has to be taken into consideration,however, that the environmental conditions are not the same on themachine and in the laboratory, and, therefore, we have to compare the figureswith more tolerance than between two laboratory systems.Fault size (%)+400+250+150+100+75+45+350A4A3A2A1A0B4B3B2B1B0C4C3C2C1C0CP1D4D3D2D1D0DP1DP0EF GF01 F02 G01 G02Existing classesNew classes-25-30-45-75TB1TB2TC1TC2TD0TD1TD2H01 H02 I01 I02H1 I1H2 I20.1 1 2 4 8 32Fault length (cm)Fig. 5Designation of the thick andthin places classescmFig. 6Designation of the foreignfiber and vegetable classes3.17 Can I use the QUANTUM 3 for wet splicer applications?The USTER ® QUANTUM 3 optical clearer can be used with wet splicerwithout any restrictions.The capacitive clearer can be used with restrictions on the amount of watersprayed. Please contact USTER ® for support.18 (21) USTER ® QUANTUM 3
THE YARN QUALITY ASSURANCE SYSTEMFor the capacitive clearer the combination with Foreign Matter option i.e.either C15/F30 or C20/F30 is required. There is a special setting on theseclearers particularly assigned for the wet spliced applications.3.18 Is it possible to classify foreign fibers?The USTER ® QUANTUM 3 classifies foreign fibers and vegetables in theUSTER ® FOREIGN CLASS matrix. The faults are classified according tothe reflection (%) and length (mm). The system also illustrates the frequencyof foreign fibers and vegetables as dense areas to facilitate easy settings.The system provides numeric classification and the scatter plot of foreignfibers and vegetables including the dense area display.3.19 What are the experience values for cuts in ring spinningmills with foreign fiber clearers?Cuts will depend on the degree of contamination of the raw material andthe quality requirements.With medium degree of contamination of the raw material and nonbleached fabrics end use it could be expected that the foreign fiber cutsrange between 10 to 40 cuts per 100 km. In case of bleached knitted orwoven fabrics FF clearing is more critical and even higher cuts should beexpected.With the new FF clearing concept, The USTER ® QUANTUM 3 ensures thehighest possible quality with the lowest possible cuts. The smart way ofsetting the clearing limits of the yarn clearer will ensure that the most disturbingfibers will always be eliminated first. Closer settings will eliminatefiner and shorter faults.3.20 With the UQC2 one could not compare the classificationof C15 and C20 – how is it now?The USTER ® QUANTUM 3 new capacitive sensor has shorter guardedmeasuring fields (4mm). As a result of the new technology, the classificationof C15 and C20 is comparable.This means the clearing limits can be similar between these clearer typesand the cuts, clearing performance for C15 or C20 is comparable. Userscan now choose the most appropriate iMH type for their application.USTER ® QUANTUM 3 19 (21)
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UT4_Application Report - Uster Technologies

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