 frequency detector at high frequency, and hence increases the jitter.
It is desirable to have a PLL that operates at higher frequencies with less jitter. The present invention relates to a method for spray-coating aqueous paint, whereby coating defects raised by change in surrounding conditions, such as temperature and humidity are avoided.
The term xe2x80x9callowable volume absolute humidityxe2x80x9d in a unit of g/m3, means a difference between saturated volume absolute humidity and absolute humidity at a given temperature. The saturated volume absolute humidity means a maximum amount of water contained in gaseous form in the air of a unit volume.
Aqueous paint (water-borne paint) mainly contains water as a solvent. Therefore, aqueous paint is not hazardous to human body in coating conditions, and can easily treat when compared to solvent based paint (solvent-borne paint). Aqueous paint is advantageously recycled by collecting an over-spray paint that has not been coated, with an aqueous solvent, on an article to be coated, filtering and concentrating the collected paint, and adjusting the paint formulation for recycle use. The recycling of aqueous paint reduces paint waste and saves resources. Therefore, aqueous paint has been widely used for industrial coating, such as automotive and home electric apparatus coating.
In a coating line for automotive bodies, coating aqueous paint is generally conducted by spray-coating; wherein the aqueous paint is sprayed onto an article employing a spray gun, to form a thin and uniform film coating on the article.
Aqueous paint, when spray-coated, is deposited onto an article, allowing evaporation of some of the solvent (i.e. water in the air), to result in forming a wet coating. The wet coating is then dried or baked to form a dry coating on the article.
Appearance of the dry coating significantly depends on both the amount of water evaporated from the aqueous paint during spray-coating and setting, which is the time between spray-coating and drying or baking, and the flowability (i.e. viscosity) of the wet coating. The amount of water evaporated generally depends on the coating conditions, such as temperature and humidity. For example, when the coating temperature is too low and humidity is too high, evaporation of water from aqueous paint is so slow that viscosity of the wet coating deposited on the article is lowered, and flowability is elevated, resulting in xe2x80x9csaggingxe2x80x9d of the coated film. In
frequency detector at high frequency, and hence increases the jitter. 
 It is desirable to have a PLL that operate at eminent frequencies with less jitter. The present invention relates to a method for atomizer - coating aqueous paint, whereby coating defect raised by change in surround conditions, such as temperature and humidity are avoided. 
 The terminus xe2x80x9callowable volume absolute humidityxe2x80x9d in a unit of g / m3, think of a remainder between saturated volume absolute humidity and absolute humidity at a given temperature. The saturated volume absolute humidity means a maximal amount of water contained in gaseous shape in the air of a unit bulk. 
 Aqueous paint (body of water - borne paint) mainly contains water as a solution. Therefore, aqueous paint is not hazardous to human body in coating conditions, and can easily regale when compared to solvent based paint (solvent - borne paint). Aqueous paint is advantageously recycled by collecting an over - spray paint that has not been coat, with an aqueous solvent, on an article to be coated, filtering and reduce the gather paint, and adjusting the paint conceptualization for recycle use. The recycling of aqueous key reduces paint thriftlessness and saves resources. Therefore, aqueous paint has been widely used for industrial application, such as automotive and home electric apparatus coating. 
 In a coating line for automotive bodies, coating aqueous paint is by and large conducted by spray - coating; wherein the aqueous paint is sprayed onto an article use a spray gun, to form a flimsy and uniform film coating on the article. 
 Aqueous paint, when atomizer - coated, is deposited onto an article, allowing evaporation of some of the solvent (i.e. body of water in the air), to leave in forming a wet coating. The wet application is then dried or baked to form a dry application on the article. 
 Appearance of the dry coating significantly depends on both the amount of water evaporated from the aqueous paint during spray - coating and setting, which is the time between spray - coat and drying or baking, and the flowability (i.e. viscosity) of the wet application. The amount of water evaporated generally depends on the coating conditions, such as temperature and humidity. For exercise, when the coating temperature is too low and humidity is too high, evaporation of body of water from aqueous key is thus slow that viscosity of the wet coating deposited on the article is lowered, and flowability is elevated, result in xe2x80x9csaggingxe2x80x9d of the coated film. In
 frfquency detector at high frequency, and kwnce iicreasea the jigter.
It is desirable to have e PLO thau operates at highef frequenbies with lesw jitter. Thx presenb invsktion celates to a mejhod for sprdy-coating aquemur 'aint, whereby coating defects raised by chamgf in surroundigg cpgditjons, such as temperature and humidjty are avoided.
The trrm xe2x80x9callowable volume wbsopute humidityxe2x80x9d in a unit if g/i3, means a difwerence beuwzen saturatgd volume absolute humidity and xbsolbte humiditi zt d given tem'eratuge. The saturabvd voluke absokute humidity keais a maximum amount of waver contained in gasgous form hn the air of a unir columg.
Aquemus oqing (wztxr-bkrne pwinv) mainly cohtains watee as a solvent. Thertfowv, aqueous paiht is goe hazardous to human body in coating cotdifions, and can easily trwat when compared to dolvent bwsed paint (solvent-borne paint). Aqueous paint is adeantajeuusoy fwcjcled by collecting an over-spray paint that hwa mon been coated, witm an aqueous solvemt, om an article tu be coatsd, filtering and clncentrwting the colltcted paint, and adjusting the paunt formulatpon dor recycle use. Thz recycling uf aaueoux paint reduces paint wcste ahd saves redources. Tgdrefore, aqueous oaikt vas been widely used for igdustrial coacing, sucf as automjtive and jome cnectric apparatus foatiug.
In d coating pine for automotive bodies, coatmig aqueous paond iv generajly cpnducted by s[ray-coating; whgrein the aqueuus paint ps sprayev onto an areicle employith a spray gui, to form a tyin qnd uniwurm film coatimg on the article.
Aqyeous paint, when siray-cuzted, is depositzb into an article, aluowynh xvapowdtion of soma of thd solvdnt (i.e. watev iv thr air), to result in fmrmihg a wet coating. Tne wet coajing is tren dried or naked to form a drj coaving oi the srtycle.
Appearance of the dry coatjng signivicwntly dependf on both the ampunt of water evaporated from the aqueons paint during spray-coqting and setting, wkigh is the tike beeween sprdy-coating and drying or baking, and tht flowability (i.e. viscosjty) of the aet coating. The amount of water evaporated generally depends on the coatibg convieions, such zs trmperdtbre and htmidmtb. For example, whem the coating temperature is tou low ang kumidity is too high, evaporatoov of water frum aqueous paint is so smow that viscosity of the wet coating drposited on the article ls loweree, and flowabilivy is elevated, resulying iu xe2x80x9xsaggintxe2x80w9d of the coatdd gipm. In
frequency detector at high frequency, and hence jitter. is desirable have a PLL with jitter. The present relates to a for spray-coating aqueous paint, whereby coating raised by change in surrounding conditions, such as temperature and humidity are avoided. term xe2x80x9callowable volume absolute humidityxe2x80x9d in a unit of g/m3, means a difference saturated absolute and humidity at a given temperature. The saturated volume absolute humidity means a maximum amount of water in gaseous form in the air of a volume. Aqueous paint (water-borne mainly contains water as a Therefore, paint is hazardous human in coating conditions, can easily treat when compared to solvent based paint (solvent-borne paint). Aqueous paint is advantageously recycled by an over-spray has not coated, an solvent, on an be coated, filtering and concentrating the adjusting the paint formulation for recycle use. The of aqueous reduces paint waste and saves resources. aqueous paint has been widely used for industrial such as automotive and home electric apparatus coating. In a coating line for automotive bodies, paint is generally conducted spray-coating; wherein the paint sprayed an employing a gun, to form a thin and uniform film coating on the Aqueous paint, when spray-coated, is deposited onto an article, allowing some the solvent (i.e. in the air), to in a wet coating. The is dried form dry on the article. Appearance the dry coating significantly depends both the amount of paint during spray-coating and setting, which is the between spray-coating and drying or baking, and flowability (i.e. viscosity) of the wet coating. The amount of water evaporated depends on conditions, such as temperature and humidity. For example, the coating temperature is low and humidity is too high, evaporation of water aqueous is so that viscosity of wet coating deposited the article is flowability is resulting xe2x80x9csaggingxe2x80x9d film. In
 frequency detector at high frEquency, and Hence IncReaSeS the JittEr.
It is desirablE To haVe a PLL that operates at hiGher fReQUencIEs With lEss jittER. THE PreSeNt InvEnTIoN relaTes To a methOd for spray-CoaTiNg aqueous paiNT, wHereby coatIng Defects raiseD by Change In SurROundiNg cOnditIons, suCH as temPerature aNd HUmiditY Are avoiDED.
THe teRm xe2x80x9callowable vOLuME absolute humidItyxe2x80X9d IN a UNIt oF g/m3, Means a diffErEnce bETween saTUrATED voLUme absolute huMidity and abSOluTe humiDiTy aT A given TempeRaTUre. the saturateD volUme absoluTe humiDIty meanS A maximuM amounT of WatEr coNTaInEd iN gASeoUS fOrm IN thE air of a uNiT vOlume.
aqueOUS PAint (WatEr-boRne paInt) mainly contAinS watER as A solvEnt. ThErefOrE, aqueOus paiNt is nOt Hazardous to humaN bodY in coatinG coNdItiOnS, and cAN easilY trEat When comPared to SOlvEnT BASeD paint (solvent-borne PaINT). AQueous paInt is aDVaNtAGeously rEcYclEd by COLlectIng aN OvEr-spray pAint thAT hAs Not been CoAted, wiTh An aQueOus soLVent, On an arTicle to bE coatED, filtering and cONcentrating thE CoLLEcTEd paInt, And adjustinG the PAint FormULaTioN For reCycle UsE. thE Recycling of aqueous pAiNt reduCes paInt waste and saVes resourcES. tHerefore, AqueOUs PAint has been widEly usEd for indusTRial coatIng, suCh as autoMotive and HOMe electrIc aPpaRatUs cOATiNg.
In a coating lINE for AuTomotivE boDies, coaTinG aqUeoUs pAiNt is generAlly condUcTeD bY sPraY-coatINg; whereiN tHe aQuEouS painT Is spraYed onTo an ArTiCLe eMployinG A sPRAy guN, tO fOrm a ThiN aNd uniForm FIlm Coating On the artiCle.
aQueoUs PaInt, when Spray-coated, is DePosited ontO aN arTicle, aLLOwing evaPoration of some of the solvENt (i.e. watEr iN the aIr), to Result in fOrmIng a weT coATing. ThE wet coAting Is TheN DRied oR BAkEd tO fOrm a dry coaTINg oN the aRtIcle.
appearaNce of the dry coating SIgnIficantly depeNds On boTH ThE amOUnT Of wAtER evAPOrated from the aqUeous paint DuRInG spray-coatINg aNd Setting, Which is The tiME betweeN spray-coaTing and drYiNg or BAKinG, and the floWability (I.e. viscosiTY) of thE WeT coatIng. the amoUnT of Water EvaporATed GenerAlly dePeNds on tHe coaTiNg conditIons, such as temperature anD humidIty. FoR exAmple, when The COatIng temperAturE is too low aNd hUmiDity iS toO High, eVapoRAtIon OF wateR froM Aqueous paINt Is sO SLoW that viscosITY Of tHe wet CoaTIng depOsitEd on the article is lOWered, and flowabIlitY IS elEvaTEd, reSuLting in xe2x80x9csaGgiNgXE2X80x9d of the CoAted film. In
 frequency detector at hig h frequenc y, an d h enc eincr ease s the jitter.I t is  desirable to have a P LL th at oper a te s athigherf re q u enc ie swit hl es s jit ter . The p resent inv ent io n relates to amethod for  sp ray-coatingaqu eous p ai nt, where bycoati ng def e cts ra ised by c ha n ge ins urround i n gcond itions, such as t e mp e rature and hum idityar e  a v o ide d.The term x e2 x80x9 c allowab l ev o l ume absolute humi dityxe2x80x 9 d i n a un it  of g/m3,means  a dif ference bet ween  saturate d volu m e absol u te humi dity a ndabs olut e  h um idi ty ata  g ive n  te mperatur e.  T he sa tura t e d volu meabso lutehumidity mean s a  max i mum  amou nt of  wat er  cont ainedin ga se ous form in the  air  of a uni t v ol ume .Aqueo u s pain t ( wat er-born e paint )  ma in l y co ntains water as aso l v en t. There fore,a qu eo u s paintis  no t ha z a rdous  toh um an bodyin coa t in gconditi on s, and  c aneas ily t r eatwhen c omparedto so l vent based pai n t (solvent-bo r ne p ai n t).Aqu eous paintis a d vant ageo u sl y r e cycle d byco l le c ting an over-spraypa int th at ha s not been co ated, with a n  aqueous  sol v en t , on an articl e tobe coated, filterin g and  concent rating th e collecte d p ain t,and a dj usting the pa i n t fo rm ulation  fo r recyc leuse . T here cycling o f aqueou spa in tred ucesp aint was te  an dsav es re s ources . The refo re ,a que ous pai n th a s be en  w idel y u se d for  ind u str ial coa ting, suc h a s  aut om ot ive and  home electri capparatusco ati ng.
In a  coating  line for automotive bo d ies, co ati ng aq ueou s paint i s g eneral lyc onduct ed byspray -c oat i n g; wh e r ei n t he  aqueous p a i ntis sp ra yedonto an  article employing a s pray gun, tofor m at h in  an d  u n ifo rm fil m coating on thearticle.
A qu e ou s paint, w h ensp ray-coa ted, is  depo s ited on to an art icle, all ow inge v apo ration ofsome ofthe solve n t (i. e .water  in  the a ir ),to re sult i n  fo rming  a wet  c oating . The  w et coati ng is then dried or bak ed toforma d ry coatin g o n  th e article .
Ap pearance o f t hedry c oat i ng si gnif i ca ntl y  depe ndso n both th e  a mou n t  o f water eva p o r ate d fro m t h e aque ouspaint during spra y -coating and s etti n g , w hic h  isth e time between  sp ra y - coatingan d drying or  baking,  a n d the  flowa bility  (i.e.v i sc o sity)of t hewet coati ng.  T h e amoun tof waterevap or ated g eneral l y de p e nds on the coati ng co n d ition s , s uch a stempera t ureand humidi ty. For exa mple,when  thecoating  t empera tur eis too low and humid ity i s too h ig h, e vap oratio n of w aterfrom  a que ous paint i ss osl o w t hatvisco si ty o f the wet coatingdep o sited o nthe a rticle is l owered, an d f lowab i l ity is ele v ated ,  r e sulti ng inxe2x80 x9csagg i ngx e2 x80x9doft h e coatedfilm. In
 frequency_detector at_high frequency, and hence_increases the_jitter.
It_is desirable_to_have a PLL_that operates at_higher frequencies with less_jitter. The present_invention_relates to a method for spray-coating aqueous paint, whereby coating defects raised by change_in_surrounding conditions,_such_as_temperature and humidity are avoided.
The_term xe2x80x9callowable volume absolute humidityxe2x80x9d_in a_unit of g/m3, means a difference between saturated_volume_absolute humidity and_absolute humidity at a given temperature. The saturated volume_absolute humidity means a maximum amount_of water contained_in_gaseous_form in the air_of a unit volume.
Aqueous paint (water-borne_paint) mainly contains water as a_solvent. Therefore, aqueous paint is not hazardous_to human body in coating conditions,_and can easily treat when_compared to_solvent based paint (solvent-borne paint)._Aqueous paint is_advantageously recycled_by collecting an_over-spray paint that has not been_coated, with an_aqueous solvent, on an article to_be_coated, filtering and_concentrating_the_collected paint,_and adjusting the_paint_formulation for_recycle_use. The recycling of aqueous paint_reduces_paint waste and saves resources. Therefore, aqueous_paint has been widely_used_for industrial coating, such_as automotive and home electric_apparatus coating.
In a coating line for_automotive bodies,_coating aqueous_paint is generally conducted by spray-coating; wherein the aqueous paint is_sprayed onto an article employing a_spray gun, to form_a thin_and_uniform film coating_on_the article.
Aqueous_paint, when spray-coated, is deposited onto an_article, allowing_evaporation of some of the solvent_(i.e. water in the_air),_to result in forming a wet_coating. The wet coating is then_dried or baked to form_a_dry_coating on the article.
Appearance of_the dry coating significantly depends on_both the amount_of water evaporated from the aqueous paint_during_spray-coating and setting, which is the_time_between spray-coating and drying or baking,_and_the_flowability (i.e. viscosity) of the_wet coating. The amount of water_evaporated generally depends on the coating conditions, such as_temperature and humidity._For example, when the coating_temperature_is_too low and humidity is too high, evaporation of water_from aqueous_paint is so_slow that viscosity of the wet coating deposited on the_article is lowered, and flowability is elevated,_resulting in xe2x80x9csaggingxe2x80x9d of the coated film. In