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Concept of High Volume Instrument (HVI) HVI Used in Bale M.rtf

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  • 7/26/2019 Concept of High Volume Instrument (HVI) HVI Used in Bale M.rtf

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    Concept of High Volume Instrument (HVI) | HVI Used in Bale Management System - e!tile "earner #$-##-%'

    HOME CONTACT ABOUT SUBMIT ARTICLE ADVERTISE ASK FORUMSearch

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    SearchSelect "anguage Trn!"# + Instruments + "a, esting + Cotton arn + .a,ric arn

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    Conce o' Hi() Vo"%me In!#r%men# *HVI+ , HVIU!e$ in

    TO GET FREETUTORIALS---

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    Boss oday5

    Hi() Vo"%me In!#r%men# *HVI+/he testing of fi,res 0as al0ays of

    importance to the spinner It is done ,y the

    HVI machine High *olume instrument

    systems are ,ased on the fi,re ,undle

    strength testing4 ie4 many fi,res are chec6ed

    at the same time and their a*erage *alues

    determined raditional testing using

    micronire4 pressley4 stelometre4 and

    fi,ro graph are designed to determinea*erage *alue for a large num,er of fi,res4

    the so called fi,re ,undle tests In HVI4 the

    ,undle testing method is automated Here4

    the time for testing is less and so the

    num,er of samples that could ,e processed

    is increased4 7uite considera,ly he

    influence of operator is reduced

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    W)# i! Te0#i"e1e!tile is a *ery 0idely used term 0hichincludes

    W)# i! Te0#i"e Fi2er1

    e!tile fi,ers are the materials at natural orartificials

    Te0#i"e Mn%'c#%rin( Proce!!

    e!tile manufacturing is a comple! process Itstarts from fi,er

    U!#er HVI 3444

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    8#&8concept-of-high-*olume- instr ument-h*i

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    Concept of High Volume Instrument (HVI) | HVI Used in Bale Management System - e!tile "earner #$-##-%'

    A&&"ic#ion o' D.e!here are different types of dyes for dyeing te!tile goods hese dyes

    Co"or F!#ne!! Te!#!

    Color fastness means resistance to

    Un$er(rmen#! or Un$er5erIt is *ery important 0ear ,ecause of its functional and appearance ,eauty

    Te0#i"e C"c%"#ionCalculate the length of a pac6age of =&8# and cone 0eight %&=> l,

    than thesu,?ecti*ehandclassingmethod

    In #2@&4

    /CCA and

    Motion

    Control4

    Inc4 an

    instrument

    manufacture

    r in 1allas4

    e!as4

    ,egan

    pioneering

    the

    de*elopmen

    t of a

    system to

    eliminate

    the potential

    for human

    error that

    e!isted 0ithhand

    classing and

    e!pand the

    num,er of

    fi,re

    properties

    that could

    rapidly ,e

    determined

    for each

    ,ale of

    cotton he

    goal 0as to

    ,e a,le to

    pro*ide

    se*en fi,re

    7uality

    characteristi

    cs for e*ery

    ,ale

    produced ,y

    /CCAs

    farmer-

    o0ners

    "a,oratory

    instruments

    0ere

    a*aila,le for

    determining

    most of the

    fi,re

    properties4

    ,ut they

    re7uired up

    to #

    minutes or

    longer to

    determine

    each of the

    properties

    he /CCA

    theory 0as

    ,ased on

    economicsD

    the faster

    cotton could

    ,e classed4

    the faster it

    could ,e

    mar6etedE and4 the more accurate measurements

    of 7uality could result in a more ade7uate supply

    of cotton 0ith fi,re properties to meet the specific

    needs of te!tile mills

    By the mid-#2@&s4 the United States

    1epartment of Agricultural (US1A) and

    the Cotton /roducers Institute (no0

    called Cotton4 Incorporated) also

    ,ecame in*ol*ed in the research

    re7uired to ,ring this concept to the

    mar6etplace

    In #2@= three of the first fi*e HVI lines 0ere

    in operation in "u,,oc64 e!as 9ne line

    0as at e!as ech Uni*ersitys

    International e!tile Center and t0o at

    /CCA hese lines 0ere the *ery earliest

    *ersions to ha*e all se*en-fi,re properties

    com,ined into a single testing line and

    measure them in less than %& seconds per

    test

    In #2=&4 US1A ,uilt a ne0 classing office in

    "amesa4 e!as4 (a,out @& miles south of

    "u,,oc6) specifically designed only for

    instrument testing all of the cotton samplesrecei*ed at that office using the latest *ersion

    of the HVI e7uipment his 0as a daring step

    ,ut 0as ,ased on data collected and

    analysed and impro*ements made in the HVI

    system during the pre*ious %& years

    Although met 0ith scepticism in the initial

    years ,y many in the cotton and te!tile

    industries4 the HVI system pre*ailed4 and

    US1A continued to install the instrument

    testing lines in all go*ernment cotton classing

    offices In #22#4 US1A used the HVI system

    on all the cotton pro*ided to the department

    for classing oday4 HVI class data is

    accepted throughout the 0orld and is the

    foundation on 0hich cotton is traded

    e!tile Calculation| 1ifferent .ormula

    of e!tile

    Calculation

    FIND 6FACEBOOK

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    Mn%'c#%rer! o' HVI /In total4 there are fi*e companies manufacturing rapid instrumenttesting machines in the 0orld4

    1.Uster echnologies4 Inc4

    2./remier :*ol*ics /*t "td4

    3. "intronics (China4 Mainland)

    4.Changing echnologies (China4 Mainland)

    5.State! :ngineering (India)

    High *olume instrument (HVI) is the most common rapid

    instrument testing machine made ,y Uster echnologies4 Inc

    he only other company that has o*er #&& machines installed in

    the 0orld4 mostly in Asia4 is /remier :*ol*ics /*t "td ,ased in

    India It is estimated that close to %4&&& rapid instruments

    testing machines ha*e already ,een stalled in the 0orld4 mostly

    from Uster echnologies4 Inc Fot only do the machines from

    each company differ4 ,ut *arious models from each company

    also differ among themsel*es he full fledge models of ,oth the

    manufacturers are capa,le of measuring measure micronaire4

    length4 length uniformity4 strength4 colour4 trash4 maturity4 sugar

    content etc

    Vrio%! HVI Mo$e"! A7i"2"e in

    Mrke# in Pre!en# D#e re/

    38 USTER9 HVI 3444

    A*aila,le 9ptions

    Barcode Geader (M$&&)

    U/S Uninterrupted /o0er Supply de*ice

    UV Module

    F:/ Module

    :8 ART :;)i() 7o"%me

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    httpD88 te!tilelearner,logspotc om8%% 8#&8concept-of-high-*olume-instrument-h*i%J on $@of the samples4 0hile the classer agreed on $# of the samples to 0ithin #8>#J

    he precision of the HVI length measurement has ,een impro*ed o*er the last fe0

    years If 0e ta6e the same ,ale of cotton used in the earlier e!ample and repeatedly

    measure length 0ith an HVI system4 o*er t0o-thirds of measurements 0ill ,e in a

    range of only a,out #8>% nd of an inchD 2 of the indi*idual readings 0ill ,e 0ithin

    #8>%nd of an inch of the ,ale a*erage In the $$&&& ,ales tested4 the length readings

    0ere repeated 0ithin &&%J on $# of the ,ales ,et0een la,oratories

    Len(#) Uni'ormi#. /he HVI system gi*es an indication of the fi,re length distri,ution in the ,ale ,y use of a length

    uniformity inde! his uniformity inde! is o,tained ,y di*iding the mean fi,re length ,y the upper-

    half-mean length and e!pressing the ratio as a percent A reading of =& is considered a*erage

    length uniformity Higher num,ers mean ,etter length uniformity and lo0er num,ers poorer length

    uniformity Cotton 0ith a length uniformity inde! of => and a,o*e is considered to ha*e good length

    uniformity4 a length uniformity inde! ,elo0 $= is considered to sho0 poor length uniformity

    S)or# Fi2er In$e0/he measure of short-fi,re content (S.C) in Motion Controls HVI systems is ,ased on

    the fi,re length distri,ution throughout the test specimen It is not the staple length that

    is so important ,ut the short fi,re content 0hich is important It is ,etter to prefer a

    lo0er commercial staple4 ,ut 0ith much lo0er short-fi,re content

    he follo0ing data 0ere ta6en on yarns produced under identical conditions and

    0hose cotton fi,res 0ere identical in all properties e!cept for short-fi,re content

    he effects on ends do0n and se*eral aspects of yarn 7uality are sho0n ,elo0D

    LOT ;A= *>8?@SFC+

    LOT;B *338?@SFC+

    En$! $o5n 3444 )r! $2 #%=Skein !#ren(#) *"2+ #&=# 2$'Sin("e en$ !#ren(#) # #'(#e0&&ernce in$e0 #&@ =2

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    E7enne!! *CV@+ #@ #$>T)in &"ce! # >@T)ick &"ce! %%2 >@'Minor De'ec#! >#% >=2

    httpD88te!tilelearner,logspotcom8%%8#&8concept-of-high-*olume-instrument-

    h*i

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    Concept of High Volume Instrument (HVI) | HVI Used in Bale Management System - e!tile "earner #$-##-%'

    hese results sho0 that an increase of

    short-fi,re content in cotton is detrimental

    to process efficiency and product 7uality

    HVI systems measure length parameters

    of cotton samples ,y the fi,rogram

    techni7ue he follo0ing assumptions

    descri,e the fi,rogram sampling processD

    he fi,rogram sample is ta6en

    from some population of fi,ershe pro,a,ility of sampling a particular

    fi,re is proportional to its length

    A sampled fi,re 0ill ,e held at a random point along its length

    A sampled fi,re 0ill pro?ect t0o ends a0ay from the holding point4 such that

    all of the ends 0ill ,e parallel and aligned at the holding point

    All fi,ers ha*e the same uniform density

    he High Volume Instruments also pro*ide empirical e7uations of short fi,re content

    ,ased on the results of cotton produced in the United States in a particular year

    Short .i,re Inde! K #%%@ (#%=$ ! UHM) (#%% ! UI)

    3here UHM Upper Half Mean "ength (inches)

    UI Uniformity Inde!

    Short .i,re Inde! K 2&>' (>$'$ ! S"%) (&2& ! UG)

    3here S"% % Span length (inches)

    UG Uniformity Gatio

    In typical fi,rogram cur*e4 the horiLontal a!is represents the lengths of the ends of sampled fi,res

    he *ertical a!is represents the percent of fi,re ends in the fi,rogram ha*ing that length or greater

    38 S#ren(#) n$ E"on(#ion/

    Princi&"e o' Me!%remen#/

    HVI uses the Constant rate of elongationN principle 0hile testing the fi,re sample he a*aila,lecon*entional methods of strength measurement are slo0 and are not compati,le to ,e used 0ith

    the HVI he main hindering factor is the measurement of 0eight of the test specimen4 0hich is

    necessary to estimate the tenacity of the sample :!pression of the ,rea6ing strength in terms of

    tenacity is important to ma6e easy comparison ,et0een specimens of *arying fineness

    Me#)o$ /he strength measurement made ,y the HVI systems is unli6e the traditional la,oratory

    measurements of /ressley and Stelometer in se*eral important 0ays .irst of all the test

    specimens are prepared in a *ery different manner In the la,oratory method the fi,res are

    selected4 com,ed and carefully prepared to align them in the ?a0 clamps :ach and e*ery

    fi,re spans the entire distance across the ?a0 surfaces and the space ,et0een the ?a0s

    Strength is measured physically ,y clamping a fi,re ,undle ,et0een % pairs of

    clamps at 6no0n distance he second pair of clamps pulls a0ay from the firstpair at a constant speed until the fi,re ,undle ,rea6s he distance it tra*els4

    e!tending the fi,re ,undle ,efore ,rea6age4 is reported as elongation

    In the HVI instruments the fi,res are randomly selected and automatically prepared for

    testing hey are com,ed to remo*e loose fi,res and to straighten the clamped fi,res4

    also ,rushed to remo*e crimp ,efore testing he mechaniLation of the specimen

    preparation techni7ues has resulted in a taperedN specimen 0here fi,re ends are

    found in the ?a0 clamp surfaces as 0ell as in the space ,et0een the ?a0s

    A second important difference ,et0een traditional la,oratory strength measurements

    and HVI strength measurements is that in the la,oratory measurements the mass of

    the ,ro6en fi,res is determined ,y 0eighing the test specimen In the HVI systems the

    mass is determined ,y the less direct methods of light a,sorption and resistance to air

    flo0 he HVI strength mass measurement is further complicated ,y ha*ing to

    measure the mass at the e!act point of ,rea6s on the tapered specimen

    A third significant difference ,et0een la,oratory and HVI strength measurements

    is the rate or speed at 0hich the fi,res are ,ro6en he HVI systems ,rea6 the

    fi,res a,out #& times faster than the la,oratory methods

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    In'orm#ion/

    enerally HVI grams per e! readings are # to % units (> to ) higher in numerical

    *alue In some indi*idual cases that seem to ,e related to *ariety4 the differences can

    ,e as much as @ to = higher his has not caused a great deal of pro,lems in the US4

    perhaps ,ecause a precedent 0as set many years ago 0hen 0e ,egan ad?usting our

    Stelometer strength *alues a,out %$ to put them on /resley le*el

    Gelati*e to the other HVI measurements4 the strength measurement is less precise

    oing ,ac6 to our single ,ale of cotton and doing repeated measurements on the ,ale

    0e shall find that @= of the readings 0ill ,e 0ithin # g8e! of the ,ale a*erage So ifthe ,ale has an a*erage strength of % gte!4 @= of the indi*idual readings 0ill ,e

    ,et0een %' and %@ g8e!4 and 2 ,et0een %> and %$ g8e!

    Because of this range in the readings 0ithin a single ,ale4 almost all HVI users ma6e

    either % or ' tests per ,ale and a*erage the readings 3hen the a*erage readings are

    repeated 0ithin a la,oratory4 the a*erages are repeated to 0ithin one strength unit

    a,out =& of the time Ho0e*er4 0hen comparisons are made ,et0een la,oratories

    the agreement on indi*idual ,ales to 0ithin plus or minus # g8te! decreases to

    his decrease in strength agreement ,et0een la,oratories is pro,a,ly related to

    the difficulty of holding a constant relati*e humidity in the test la,s est data

    indicate that # shift in relati*e humidity 0ill shift the strength le*el a,out # .or

    e!ample4 if the relati*e humidity in the la,oratory changes > (from @> to @@)4

    the strength 0ould change a,out # g8te! (from %' to % g8e!)

    :8 Fi2er Finene!!/

    Princi&"e o' Me!%remen#/.i,re fineness is normally e!pressed as a micronaire *alue (microgram per inch) It is

    measured ,y relating airflo0 resistance to the specific surface of fi,res and maturity ration is

    calculated using a sophisticated algorithm ,ased on se*eral HVIO measurements

    Me#)o$/he micronaire reading gi*en ,y the HVI systems is the same as has ,een used in the

    commercial mar6eting of cotton for almost % years he repeata,ility of the data and the

    operator ease of performing the test ha*e ,een impro*ed slightly in the HVI micronaire

    measurement o*er the original instruments ,y elimination of the re7uirement of e!actly0eighing the test specimen he micronaire instruments a*aila,le today use microcomputers

    to ad?ust the reading for a range of test specimen siLes

    In'orm#ion/he micronaire reading is considered ,oth precise and refera,le .or e!ample4 if 0e ha*e a

    ,ale of cotton that has an a*erage micronaire of '% and repeatedly test samples from that

    ,ale4 o*er t0o-thirds of that micronaire readings 0ill ,e ,et0een '# and '> and 2 of the

    readings ,et0een and '& and '' hus4 0ith only one or t0o tests per ,ale 0e can get a

    *ery precise measure of the a*erage micronaire of the ,ale

    his reading is also *ery repeata,le from la,oratory to la,oratory In US1A appro! $$&&&

    ,ales 0ere tested per day in each la,oratory4 micronaire measurements made in different

    la,oratories agreed 0ith each other 0ithin micronaire units on $$ of the ,ales

    he reading is influenced ,y ,oth fi,re maturity and fi,re fineness .or a gi*en gro0ing

    area4 the cotton *ariety generally sets the fi,re fineness4 and the en*ironmental factors

    control or influence the fi,re maturity hus4 0ithin a gro0ing area the micronaire *alue

    is usually highly related to the maturity *alue Ho0e*er4 on an international scale4 it

    cannot ,e 6no0n from the micronaire readings alone if cottons 0ith different

    micronaire are of different fineness or if they ha*e different maturity le*els

    8 Moi!#%re/

    Princi&"e o' Me!%remen#/Moisture content of the cotton sample at the time of testing4 using conducti*e

    moisture pro,e and the main principle in*ol*ed in the measurement is ,ased on

    the measurement of the dielectric constant of a material

    8 Co"or/

    Princi&"e o' Me!%remen# /

    Gd (3hiteness)4 P, (ello0ness)4 Colour rade Measured optically ,y different colour filters4

    con*erted to US1A Upland or /ima Colour rades or regional customiLed colour chart

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    O#)er In'orm#ion/he measurement of cotton colour predates the measurement of micronaire4 ,ut ,ecause

    colour has al0ays ,een an important component of classers grade it has not recei*ed

    attention as an independent fi,re property Ho0e*er the measurement of colour 0as

    incorporated into the *ery early HVI systems as one of the primary fi,re properties

    1etermination of cotton colour re7uires the measurement of t0o properties4 the grayness and

    yello0ness of the fi,res he grayness is a measure of the amount of light reflected from the mass

    of the fi,re 3e call this the reflectance or Gd *alue he yello0ness is measured on 0hat 0e callHunters P, scale after the man 0ho de*eloped it he other scales that descri,e colour space

    (,lue4 red4 green) are not measured ,ecasue they are considered relati*ely constant for cotton

    Geturning once again to the measurements on our single ,ale4 0e see that

    repeated measurements of colour are in good agreement .or greyness or

    reflectance readings4 @= of the readings 0ill ,e 0ithin & Gd units of the ,ale

    a*erage4 and 2 0ithin one Gd unit for the a*erage

    As for yello0ness4 o*er t0o-thirds of these readings 0ill ,e 0ithin one-fourth of one P, unit

    of the a*erage4 and 2 0ithin one-half of one P, unit he greyness (Gd) and yello0ness

    (P,) measurements are related to grade through a colour chart 0hich 0as de*eloped ,y a

    US1A researcher he US1A test of $$&&& ,ales sho0ed the colour readings to ,e the most

    repeata,le of all data ,et0een la,oratoriesE =$ of the ,ales repeated 0ithin one

    greyness(Gd) unit4 and = repeated 0ithin one-half of one yello0ness(P,) unit

    8 Tr!) Con#en#/

    Princi&"e o' Me!%remen#//article Count4 Surface Area Co*ered ,y rash4 rash Code Measured optically ,y utiliLing a

    digital camera4 and con*erted to US1A trash grades or customiLed regional trash standards

    O#)er In'orm#ion/he HVI systems measure trash or non-lint content ,y use of *ideo camera to determine the

    amount of surface area of the sample that is co*ered 0ith dar6 spots As the camera scans the

    surface of the sample4 the *ideo output drops 0hen a dar6 spot (presumed to ,e trash) is

    encountered he *ideo signal is processed ,y a microcomputer to determine the num,er of dar6

    spots encountered (C9UF) and the per cent of the surface area co*ered ,y the dar6 spots

    (AG:A) he area and count data are used in an e7uation to predict the amount of *isi,le non-lint

    content as measured on the Shirley Analyser he HVI trash data output is a t0o-digit num,er

    0hich gi*es the predicted non-lint content for that ,ale .or e!ample4 a trash reading of %= 0ould

    mean that the predicted Shirley Analyser *isi,le non-lint content of that ,ale 0ould ,e %=

    3hile the *ideo trash instruments ha*e ,een around for se*eral years4 ,ut the data

    suggest that the prediction of non-lint content is accurate to a,out &$ non-lint4 and

    that the measurements are repeata,le 2 of the time to 0ithin # non-lint content

    ?8 M#%ri#. n$ S#ickine!!/

    Princi&"e o' Me!%remen#/Calculated using a sophisticated algorithm ,ased on se*eral HVIO measurements

    O#)er In'orm#ion/Fear infrared analysis pro*ides a fast4 safe and easy means to measure cotton

    maturity4 fineness and sugar content at HVI speed 0ithout the need for time

    consuming sample preparation or fi,er ,lending

    his technology is ,ased on the near infrared reflectance spectroscopy principle in the

    0a*elength range of $& to %&& nanometres 1ifferences of maturity in cotton fi,res

    are recogniLed through distinctly different FIG a,sor,ance spectra FIG technology

    also allo0s for the measurement of sugar content ,y separating the a,sor,ance

    characteristics of *arious sugars from the a,sor,ance of cotton material

    Cotton maturity is the ,est indicator of potential dyeing pro,lems in cotton products

    Immature fi,res do not a,sor, dye as 0ell as mature fi,res his results in a *ariety of dye-

    related appearance pro,lems such as ,arre4 reduced colour yield4 and 0hite spec6s Barre

    is an un0anted striped appearance in fa,ric4 and is often a result of using yarns containing

    fi,res of different maturity le*els .or dyed yarn4 colour yield is diminished 0hen immature

    fi,res are used 3hite spec6s are small spots in the yarn or fa,ric 0hich do not dye at all

    hese spec6s are usually attri,uted to neps (tangled clusters of *ery immature fi,res)

    FIG maturity and dye upta6e in cotton yarns ha*e ,een sho0n to correlate highly 0ith maturity ashttpD88te!tilelearner,logspotcom8%%8#&8concept-of-high-*olume-instrument-

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    measured ,y FIG A correlation of GK&2@ 0as o,tained for a set of # cottons

    In a ?oint study ,y I and a :uropean research organiLation4 ' cottons from four continents 0ere

    tested for maturity using the FIG method and the SHIG": 1e*elopment .ineness8 Maturity tester

    (.M) .or these samples4 FIG and .M maturity correlated *ery highly (GK&2')

    9n # cottons from different gro0th areas of the USA4 FIG maturity 0as found to correlate

    0ith r% K &2 through a method de*eloped ,y the United States 1epartment of Agriculture

    (US1A) In this method4 fi,res are cross-sectioned and microscopically e*aluated

    Sugar Content is a *alid indicator of potential processing pro,lems Fear infrared

    analysis4 ,ecause of its adapta,ility to HVI4 allo0s for screening of ,ales prior to use

    he information ser*es to selected ,ales to a*oid preparation of cotton mi!es of ,ales

    0ith e!cessi*e sugar content Cotton stic6iness consists of t0o ma?or causes-

    honeyde0 form 0hite flies and aphids and high le*el of natural plant sugars Both are

    periodic pro,lems 0hich cause efficiency losses in yarn manufacturing

    he pro,lems 0ith the randomly distri,uted honeyde0 contamination often

    results in costly production interruptions and re7uires immediate action often as

    se*ere as discontinuing the use of contaminated cottons

    Fatural plant sugars are more e*enly distri,uted and cause pro,lems of residue ,uild-up4 lint

    accumulation and roll laps Quality pro,lems created ,y plant sugar stic6iness are often more

    critical in the spinning process than the honeyde0 stic6iness "int residues 0hich accumulate onmachine parts in *arious processes 0ill ,rea6 loose and ,ecome part of the fi,re mass resulting in

    yarn imperfections An effecti*e 0ay to control cotton stic6iness in processing is to ,lend stic6y and

    non-stic6 cottons ;no0ing the sugar content of each ,ale of cotton used in each mi! minimiLes

    day-to-day *ariations in processing efficiency and products more consistent yarn 7uality Screening

    the ,ale in*entory for sugar content prior to processing 0ill allo0 the selection of mi!es 0ith good

    processing characteristics 0hile also utiliLing the entire ,ale in*entory

    he relationship ,et0een percent sugar content ,y FIG analysis and the /er6ins

    method sho0s an e!cellent correlation of r%K&2 he amount of reducing material on

    cotton fi,re in the /er6ins method is determined ,y comparing the reducing a,ility of

    the 0ater e!tract of the fi,re to that of a standard reducing su,stance Using the FIG

    method4 the amount of reducing sugar in cotton is measured

    Meri#! o' HVI Te!#in(/

    1.he results are practically independent of the operator

    2.he results are ,ased on large *olume samples4 and are therefore more significant

    3.he time for testing per sample is &> minutes he respecti*e fi,re data are

    immediately a*aila,le

    4.A,out #=& samples per hour can ,e tested and that too 0ith only % operators

    5.he data are clearly arranged in summarised reports

    6.hey ma6e possi,le the ,est utilisation of ra0 material data

    7. It is ,est applied to instituting optimum condition for ra0 material

    8./ro,lems as a result of fi,re material can ,e predicted4 and correcti*e

    measures instituted ,efore such pro,lems can occur

    9. he classing of cotton and the laying do0n of a mi! in the spinning mill his HVI testing is

    suita,le for the e!tensi*e 7uality control of all the ,ales processed in a spinning mill

    10. he mill is in a position to determine its o0n 7uality le*el 0ithin a certain operating range

    S#n$r$ie$ Proce!! 'or HVI Te!#in(/

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    Pre;!e!on &reci!ion n$ Acc%rc. Te!#! 'or "" HVI!/All offices are re7uired to select 6no0n-*alue cotton samples and perform stringent and

    consistent performance e*aluations4 ,efore machines can ,e placed into production

    In!#r%men# C"i2r#ion/Strict cali,ration procedures used ,y all offices and Quality Assurance Branch

    ;no0n-*alue cottons and tiles used for cali,ration4 /eriodic cali,ration chec6s4

    1ata is collected4 analysed and correcti*e actions ta6en 0hen necessary

    %"i#. A!!%rnce Brnc)= C)eck "o# Pro(rm/Appro!imately # of entire crop is selected from each field office for retest in QAN as

    Chec6 lots Chec6 lot data is returned to classing offices 7uic6ly for re*ie0 Chec6 lot

    system assists in monitoring office performance and ensuring proper testing le*els

    L2or#or. A#mo!&)eric Con$i#ion!/esting la,oratories are re7uired to maintain conditions of $&R#R . and @% GH

    All cotton must sta,iliLe at moisture content le*el of @$-=% prior to HVI testing

    A%#)or o' T)i! Ar#ic"e/So)e" RnFoa6hali e!tile :ngineering College

    Fce2ook/ )##&/5558'ce2ook8comrn8!o)e"8

    o% mi()# "!o "ike

    ;ey /layers in the Ho0 to Choose the 1ifferent ;inds of Gomantic Sil6Apparel Industry /erfect Camisole esting and Clothing in the

    Appro*al Ge7uired 3edding Fightfor .a,ric toarmentManufacturing

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