USTER® TEnsojET 4

PREDIcTABLE WEAvABILITy® –OPTImIZED PRODUcTIvITy

THE WEAvABILITy® mEASUREmENT SySTEm

UNIQUELy FAST –

UNIQUELy AccURATE

cAPAcITy mEANS QUALITy

The testing capacity of the USTER® TENSOJET 4 is immense: asmuchas24runningkilometersofyarnperhour.This levelofpowerandspeedmeansthatperiodicandnear-periodicbreaking-elongationfailure can be detected for the first time. These faults are costlyin subsequent processing, which is why the USTER® TENSOJET 4goes a step further, by providing a display of periodic faults in aspectrogram–agreathelpindetectingpossibleerrorsandpreventingthem.Andthesystem’smassivetestcapacity–upto30,000breaksperhour – allows yarn faults or isolated weak places that occur onlyinfrequentlytobedetectedandstepstobetakentofixtheproblem.Forthespinner,thisgivesyouryarntradingafirmfoundationandpavesthewaytohigherprofitability.

USTER® TEnsojET 4 – OPERATING PRINcIPLES

Conventional strength testing merely analyzes the physical strengthandelongationofayarnsample,toarriveatanaveragevalueforitsstrength.This,however,cannotgiveatrueindicationofayarn’slikelybehaviorduring furtherprocessing. Todo this,weneed to increaseboth thenumberofsamples takenand thespeedofprocessing.Thetesting operation comprises four stages. First, moving rollers drawtheyarncontinuously from thepackageatapresetspeed.Theyarnis then sucked into a storage zone. Next, the yarn is then passed,via two pairs of rollers, into the measuring zone, where a systemofmovingclamping rollerseffectastrainon theyarnuntil itbreaks.Finally, lint is automatically suckedout of the system. Theseprocessstages are synchronized and simultaneous operation of individualfunctionsmaximizesthroughputrates.

ESSENTIAL TEST FOR WEAvING yARNS

Production speeds in the weaving mill have increased significantlyin recent years, as machine technology has progressed. The resultis that weft and warp yarns are subjected to higher peak loadsthanever–andthisbecomesacritical factorwhenit leads tomorethreadbreakagesandconsequentlyapotentiallydisastrousslumpinproductionefficiency.Tocounterthisproblem,itisabsolutelyessentialforspinnerstodaytotestweavingyarnsproperly.Seriousweaknessesinyarncanbecausedbyanumberoffactors:extremelythinplaces;thickplaceswithlittletwist;andalsoyarncontaminationbyvegetablematter, fly and foreign fibers. Such faults need to be identified, topinpoint spinning problems and to be able to assess the USTER®Weavabilityofayarnandthenumberofthreadbreakagesthatcanbeexpected.Sincemanyoftheseweakspotsmayoccuronlyrarelyandat isolated points in the yarn, there is only one way to make suretheyaredetected–bycarryingouta largenumberof randomtestswithinashorttime,usingrealisticloads.TheUSTER® TENSOJET 4isahigh-performancetensilestrengthtesterwhichdoesexactlythat.Theadvantageisyours–andyourcustomers’.

USTER® TEnsojET 4

DETECTING MORE

ISOLATED WEAK PLACES –WHAT STATISTICS CANNOT REVEAL

A series of in-depth evaluations, each based on analyses of 100,000yarn breaks, have shown that the real weak places – defined usingUSTER® – are actually to be found at deeper levelsof break and elongation measurement than was previously assumed.In short, the dangerous weak places just cannot be detected usingtraditional testing or conventional statistical methods!

Your customers will rightly complain when rare weak places triggerproblems under load peaks during further processing. These problemscause massive decreases in production efficiency. They amount tomajor economic losses just waiting to happen!

PREVENTING COSTLY PRODUCTION SETBACKS

How a yarn will behave during demanding subsequent processes suchas weaving can only be reliably predicted by correct classificationof measurable yarn characteristics – such as tensile strength and theincidence of isolated weak places – balanced against actual threadloads in the process.

The USTER® enables detailed yarn profiles to beestablished, taking account of both the yarn quality demanded forthe endproduct and the accurate prediction of yarn behavior thatthe system makes possible.

Unplanned downtime lowers both economic efficiency and weavingquality, while also damaging profit margins not only for the weaver,but also for the yarn producer, who has the added worry of dealingwith some expensive complaints from his customer.

THAN EVER BEFORE

Load distributionduring the

weaving process

Tensile strengthdistribution ofthe weft yarn

Weaving load/tensile strength (cN)

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USTER® WEAVABILITY – A STEP CLOSER TO REALITY

The graph here shows that the weft yarn (left) broke 15 times on theweaving machine, with a weak place level of 35.5 cN after 100,000insertions. So in this example a 10% lower level of genuine isolatedweak places means a 60% higher rate of breakage of the weft yarn.The production setbacks resulting from this level of breakage can turna profit into a loss for the weaving mill.

The alternative? Optimize your purchasing strategy with the USTER®

and save on extra expense by making an accurate,targeted forecast of how your purchased yarns will behave on theweaving machine. Measuring across 100,000 breaks with theUSTER® – that’s what USTER® WEAVABILITY means . . .

THINK QUALITy,

THINK USTER®

PERcENTILE vALUES INDIcATE WEAK PLAcE LEvEL

TheUSTER® TENSOJET 4usespercentilevalues to indicate the levelof the weakest parts of a yarn. If there are isolated weak places,they reveal themselves as “outliers” – extreme deviations from thescatter plot. The percentile value indicates the exact level of theseweak places. In a modern spinning mill, the interaction betweenthe fiber material, the spinning process and the yarn count playsan overriding, central role. Even the smallest fluctuations in thefibermaterialorinthespinningprocesscancauseanincreaseinthenumberofisolatedweakplaces.Thiscanoftenbetracedbacktothespinninglimitofthecottonfibersused.

Faultssuchasthesecanbedetectedonlybyphysicaltensiletestswiththewidestscope.Ifthesefaultsonlybecomevisibleinfurtherprocess-ing–asisthecasewithYarn1intheaccompanyinggraphic(12.5stops)--thenconsiderablefinanciallossesmaybeexpected.Inthisexample,anUSTER® TENSOJET 4wouldhavegivenveryrapidpayback.

USTER® WEAvAbIlITy

HOW TO mEASURE IT

Stops/100,000 picks Weavingmachine

End break rate foryarns y1 to y4

USTER® TEnsojET

yarn 112.5 stops

PLATFORm FOR PROFITABILITy

With its high-capacity testing and its user-friendly analysis tools,the USTER® TENSOJET 4 is the only realistic method of forecastingthetrueUSTER®Weavabilityofayarn.Itisbasedonstate-of-the-arttechnology,makingiteasytouse,withminimaloperatorattention.BackedbytheunrivalledtestingexpertiseofUsterTechnologies,therelevanceand quality of its measurements is assured. Compatibility with therecognized international benchmarking of USTER® StatiSticS forelongation testingmeans that users of theUSTER® TENSOJET 4 areguaranteed objective and meaningful results, which are acceptedthroughout theglobal textilechain.Forspinnersandtheircustomers,the USTER® TENSOJET 4 provides an ideal platform for mutualsatisfactionandoptimumprofitability.

USTER® TENSOJET 4

ADDITIONAL BENEFITS

• USTER® WEAVABILITY System – for reliable prediction of yarn performance.

• Enormous test capacity – helps detect seldom-occurring yarn faults or isolated weak places.

• High testing speed – for greater breaking forces.

• Automatic changer for up to 24 bobbins – for virtually operator-independent working.

• Economic efficiency optimized for actual load peaks.

• Spectrogram support – to pinpoint periodic faults.

Automatic change of up to 24 bobbins makes USTER®

almost operator independent. A testing cycletakes about 120 milliseconds, compared to the prescribednorm of 20 seconds per test – a long way from the actualprocess load.

State-of-the-Art Technology

High testing speeds mean greater breaking forces. Usingintelligent tools, USTER® values are convertedinto traditional breaking forces. Spectrograms for tensilestrength and elongation mean that faults caused by machineproblems are more easily detected.

Intelligent Tools

Today, a single production breakdown can tip the scalesbetween profit and loss. Each weaving process has itsown characteristics and the USTER® providestailor-made information on the isolated and dangerous weakplaces in a yarn.

Economic Efficiency and Load Peaks

Built-in correlation with traditional elongation testing-methodscovered by USTER® guarantees internationalacceptance. Standards recognized the world over facilitateyarn trading and optimize added value.

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International USTER®

STATISTICS

A successful business contract is reflected in the satisfaction of both parties. As a final check in the spinning mill – andas a vital tool for control of yarn purchasing – the USTER®

provides a sound and objective basis forsatisfactory and profitable trading.

Objective Basis for Profitable Trading

Single, isolated weak places spoil further processing efficiency.Only by employing a large-enough number of random tests canfair yarn trading and efficient further processing be assured.

Detecting Outliers

KEY FACTS IN BRIEF

USTER® TENSOJET 4

Ring rail motioncan cause periodic

B-force defects

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WELCOME TO USTER®

THINK QUALITYThe Standard from Fiber to FabricUSTER® is the world’s leading supplier of total quality solutions from fiber to fabric.USTER® standards and precise measurement provide unparalleled advantages forproducing best quality at minimum cost.

USTER® – Think QualityOur commitment to state-of-the-art technology ensures the comfort and feel of thefinished product – satisfying the demands of a sophisticated market. We help ourcustomers to benefit from our applied knowledge and experience – to think quality,think USTER®.

Broad Range of ProductsUSTER® occupies a unique position in the textile industry. With our broad rangeof products, we have a wide reach across the textile chain that is unmatched by anyother supplier in the market.

Optimal Service – Complete SatisfactionKnow-how transfer and instant help – we are where our customers are. A total of 200certified service engineers worldwide grants fast and reliable technical support. Benefitfrom local know-how transfer in your specific markets and enjoy our service à la carte.

USTER® STATISTICS – The Textile Industry StandardsWe set the standards for quality control in the global textile industry. With USTER®

we provide the benchmarks that are the basis for the trading of textileproducts at assured levels of quality across global markets.

USTERIZED® – Brand Your Products with QualityUSTERIZED® stands for “defined quality assured” within the textile chain. We inviteselected customers to join the USTERIZED® Member Program. More information atwww.usterized.com.

USTER® WorldwideWith three technology centers, six regional service centers and 50 representativeoffices around the world, USTER® is always sure of delivering only the best to itscustomers. USTER® – committed to excellence, committed to quality. And that willnever change.

Uster Technologies AGWilstrasse 11CH–8610 Uster / Switzerland

Phone +41 43 366 36 36Fax +41 43 366 36 37

www.uster.comsales@uster.com

Knoxville, USAKnoxville, USA

Charlotte, USCharlotte, USA

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