Application Handbook_Uster_Statistics - Uster Technologies

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Structure of the classification matrix for Foreign Matter (FD, VEG)CharacteristicsDefinition for USTER ®CLASSIMAT QUANTUMDescriptionFault lengths Definition Length rangeAA (only for CMT5)A (only for CMT5)BB11B13B12B14B21B22CDEFFault sizes Definition Range of mass increaseFault channels of theclearers111121314234Fshorter than 0,6 cmshorter than 0.6 to 1 cm(0 to 1 cm for USTER ® CLASSIMAT QUANTUM)1 to 2 cm1 to 1.4 cm1 to 1.4 cm1.4 to 2 cm1.4 to 2 cm1 to 1.4 cm1.4 to 2 cm2 to 3 cm3 to 5 cm5 to 7 cmlonger than 7 cm+5 to +10%+5 to +7%+5 to +7%+7 to +10%+7 to +10%+10 to +20%+20 to +30%over +30%over +5%FD Dark foreign fibers in light yarnsVEG Vegetable matterTable 4-18 Classing matrix of the USTER ® CLASSIMAT 5 and USTER ® CLASSIMAT QUANTUM for ForeignMatter (FD, VEG)USTER ® STATISTICS 27 (36)
Outlier types and their definitionsOutlier Type Abbreviation Limits DescriptionNSLT Outliers NSL (100%)T (65%)NSL outlier limit is set at 100%above the yarn bodyT Outlier limit is set at -65% ofthe yarn body.Outliers for neps, short thick, long thick andthin places (NSLT). The outlier limitdepends on the yarn body shape and maydiffer for various yarn types.FD Outliers FD (8%, 2cm) FD outlier curve passes throughthe point of intersection at 8%, 2cm.Outliers for colored foreign fibers (FD). TheFD outlier limit is fixed and applies to alltypes of yarns.VEG OutliersVEG (10%, 2.6 cm) VEG outlier curve is fixed andapplies to all yarn types. Thecurve passes the point ofintersection at 10%, 2.6 cm.Outliers for vegetable matter (VEG). TheVEG outlier limit is fixed and applies to allyarn types.PP Outliers PP (65%) PP Outlier limit is set at 65% ofthe scatter plot.Outliers for polypropylene fibers (PP). Theoutlier limit depends on the scatter plotshape and may differ for various types ofyarns.Quality OutlierTypeAbbreviation Limits DescriptionYarn evenness (CV m)(-16%, +20%)Mean Value (MV) – 0.16x MVMean Value (MV) + 0.20x MVOutliers for yarn evenness.The range is indicative for the CV m variationof the entire lot and the CV m values (100 myarn samples) ranged between these limits.Imperfectionoutliers forstandard classes:Thick places: +50 /Thin places: -50 /Neps: +200Imperfection(Standard) (3σ)Mean value (MV) of the standardimperfection classes ± 3 xstandard deviation (s).Outliers for imperfections (standardclasses).The range is indicative for the variation ofthe standard imperfection classes of theentire lot.An affected share value is shown where atleast one of the standard imperfectionclasses exceeded the -3σ or the +3σ borderlimits within the distribution.Imperfectionoutliers forsensitive classes:Thick places: +35 /Thin places: -40 /Neps: +140Imperfection(Sensitive) (3σ)Mean value (MV) of the sensitiveimperfection classes ± 3 xstandard deviation (s).Outliers for imperfections (sensitiveclasses).The range is indicative for the variation ofthe sensitive imperfection classes of theentire lot.An affected share value is shown where atleast one of the sensitive imperfectionclasses exceeded the -3σ or the +3σ borderlimits within the distribution.Hairiness outliersHairiness (H)(Mean Value ± 1)Outliers for hairiness.(-1.0, +1.0)The range is indicative for the Hairinessvariation of the entire lot and the H values(100 m yarn samples) ranged betweenthese limits.Affected Share Affected Share (%) The affected share gives the percentage(%) value of the length of the respectiveoutliers out of the entire sample test length.This value is an indicative of the share ofdefective yarn in the lot.Table 4-19USTER ® STATISTICS 28 (36)
Page 1 and 2: USTER ® STATISTICSApplication Hand
Page 6 and 7: 2.4 New Yarn Quality Characteristic
Page 8 and 9: 2.8.2 New yarn types• Two-plied y
Page 10 and 11: Yarn testingParameter Abbreviation
Page 12 and 13: The best practice is to preconditio
Page 14 and 15: Length & StrengthCharacteristics Ab
Page 16 and 17: Length & MaturityCharacteristics Ab
Page 18 and 19: Furthermore, trash removal efficien
Page 20 and 21: Testing packages of ring-spun yarns
Page 22 and 23: Characteristics Abbreviation Unit D
Page 24 and 25: Characteristics Abbreviation Unit D
Page 26 and 27: CharacteristicsDescriptionFault siz
Page 30 and 31: 4.5.6 Yarn twist with USTER ® ZWEI
Page 32 and 33: 5 RestrictionsThis section addresse
Page 34 and 35: 5.5 Outliers and Frequent Defects i
Page 36 and 37: 6 ValidityThe information provided
Page 38: Uster Technologies AGSonnenbergstra

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