Kev kho qhov saum npoo tsuas yog zoo li cov khoom siv uas xa tawm. Tus kws kho mob corona electrode zaum ntawm lub ntsiab lus uas lub zog hluav taws xob dhau los ua qhov chaw chemistry, thiab txhua qhov kev txiav txim siab txog nws cov khoom siv, geometry thiab txoj kev txias yuav txiav txim siab seb koj cov yeeb yaj kiab, ntawv ci lossis txheej kab khiav ntawm qhov nrawm lossis qis nrog rau cov webs tsis lees paub. Phau ntawv qhia no taug kev los ntawm kev siv tshuab ua haujlwm tom qab kev xaiv electrode rau cov kws kho mob corona, cov tshuaj kho ntshav thiab cov tshuab ntxuav lub vev xaib siv rau extrusion, lamination thiab luam ntawv kab.
Tus kws kho mob Corona Electrode Ua li cas tiag
Lub corona kho electrode yog cov khoom siv hluav taws xob uas ua rau lub siab -voltage teb hla qhov sib txawv. Hloov tam sim no ntawm 10 kHz mus rau 40 kHz yog siv los ntawm cov electrode thiab ib qho yob hauv av, thiab cov huab cua hauv qhov sib txawv tawg mus rau hauv cov ntshav txias ntawm ions, electrons thiab ozone. Cov plasma no ua rau lub ntsej muag polymer, rhuav tshem cov pa roj carbon-hydrogen bonds thiab txuas cov pa oxygen-cov kabmob ua haujlwm xws li hydroxyl, carbonyl thiab carboxyl radicals. Qhov tshwm sim yog lub zog saum npoo ntau dua, feem ntau ntsuas hauv dynes ib centimeter.
Lub electrode tsis tsuas yog pov tseg voltage rau hauv qhov sib txawv. Nws cov duab tswj qhov twg lub teb concentrates, dav npaum li cas cov paug kis tau, ntau npaum li cas tshav kub generated thiab npaum li cas cov kev kho mob thaj av thoob plaws lub web dav. Ib tug tsis zoo xaiv corona kho electrode tsim banding, pinholes thiab backside kev kho mob, thaum lub qhov dej -matched ib tug muab ib tug uniform dyne theem ntawm ntug mus rau ntug nrog rau qhov tsawg tshaj plaws muaj peev xwm kos.
Vim tias cov nyhuv kho tau ploj mus dhau lub sijhawm, cov electrode kuj yuav tsum ruaj khov. Yog tias qhov paug tawm tsis sib xws, cov neeg ua haujlwm them nyiaj los ntawm kev txhawb nqa lub zog, uas ua rau cov yob txheej hnav thiab ua kom lub neej ua haujlwm ntawm tag nrho cov chaw nres tsheb.
Cov khoom siv hluav taws xob sib piv
Ob tsev neeg tseem ceeb yog aluminium thiab stainless hlau, txhua tus muaj kev lag luam sib txawv -offs.
Aluminium electrodes yog lub teeb, pheej yig thiab yooj yim rau tshuab, uas ua rau lawv nrov rau nqaim -web thiab chav kuaj. Lawv ua kom sov zoo tab sis oxidise tsis tu ncua nyob rau hauv ozone- nplua nuj nyob ib ncig ntawm cov paug. Oxidation roughens saum npoo, thiab ib tug ntxhib corona kho electrode erodes lub dielectric npog ntawm lub txee- yob sai dua li polished.
Stainless hlau electrodes, feem ntau 304 lossis 316, tiv thaiv ozone nres thiab tuav lawv qhov ntev ntev rau xyoo. Lawv raug nqi ntau dua thiab hnyav dua, qhov tseem ceeb ntawm cov kab dav dav - lub vev xaib uas cov khoom siv hluav taws xob yuav tsum tau nqa mus rau threading. Hauv kev xyaum, feem ntau cov kws kho mob corona ntau tshaj ib meter ntawm lub vev xaib dav siv stainless hlau.
Qee cov qauv tsim siv cov txheej nyias nyias los yog npib tsib xee rau ntawm ntug tawm. Cov coatings txuas ntxiv kev pab cuam lub neej tab sis qhia txog hom kev ua tsis tiav: yog tias cov txheej txheej spills, lub hauv paus hlau arcs thiab pits lub yob npog. Yog li ntawd, coated electrodes yuav tsum tau soj ntsuam nyob rau tib lub sij hawm raws li lub dielectric nws tus kheej.
tooj liab thiab tooj dag tshwm sim qee zaus hauv qis - zaus lossis cov cuab yeej tshwj xeeb plasma, tab sis lawv qhov kev yaig ua rau lawv xaiv tsis zoo rau kev tsim khoom tas mus li.
Ceramic Dielectric thiab Roller Npog
Lub yob ntawm lub electrode yog them nrog ib tug dielectric, keeb kwm silicone roj hmab los yog, nyob rau hauv niaj hnub corona kho, ib tug plasma - tshuaj tsuag tej hub xws li txhuas oxide los yog chromium oxide. Lub dielectric tsim cov capacitor uas txwv tam sim no los ntawm qhov sib txawv, yog li nws cov thickness thiab dielectric tas li ncaj qha txiav txim siab qhov kev siv tshuaj.
Silicone npog yog pheej yig thiab yooj yim los hloov tab sis degrade nyob rau hauv kev txhawb nqa siab zog, tsim ib tug conductive khiav uas nws thiaj li luv los ntawm. Ceramic coverings tolerate far higher watt density and hold their thickness for a decade or more, but they are brittle and vulnerable to mechanical damage from a misaligned corona treater electrode.
Ib qho yuam kev feem ntau yog ua ke ib lub voj voog ceramic npog nrog kev txhoj puab heev electrode profile. Ceramic nyiam ib qho yooj yim, zoo - txhawb nqa tawm; cov npoo ntse tsom rau thaj teb thiab tuaj yeem tawg lub txheej. Thaum koj hais qhia tus kws kho mob corona electrode, qhia nws tawm tsam dielectric koj tau khiav, tsis yog tawm tsam daim ntawv teev cov ntaub ntawv.
Roll diameter kuj tseem ceeb. Lub yob loj dua muab kev sib cuag ntev dua thiab kev kho mob ntev dua, uas tso cai rau koj txo hwj chim yam tsis poob qib dyne.
Electrode Geometry thiab Gap Chaw
Qhov loj me yog qhov sib txawv tshaj plaws ntawm qhov chaw nres tsheb. Tus kws kho mob corona raug khiav qhov sib txawv ntawm 1.0 hli mus rau 2.5 hli nruab nrab ntawm ntug electrode thiab dielectric nto. Qhov loj dhau qhov sib txawv ua rau qhov kev tawg ntawm qhov xav tau, yuam kom muaj zog ntau dua thiab ua rau ntau dua ozone thiab cua sov. Qhov sib txawv me me heev yuav ua rau muaj kev sib cuag, arcing thiab kev puas tsuaj tam sim rau lub yob.
Electrode profiles poob rau hauv peb qhov dav: hniav lossis riam electrodes rau qhov dav dav dav, khau electrodes rau dav webs, thiab segmented electrodes rau cov kab uas ib nrab -qhov dav yuav tsum tau kho. Segmented designs cia koj hloov tawm ib cheeb tsam, uas yog ib qho tseem ceeb thaum khiav nqaim webs ntawm ib tug dav corona kho electrode los ua ke - khiav tag nrho cov dav ntawm lub nqaim web nkim zog thiab overheats tsis siv zones.
Teb uniformity nyob ntawm ntug geometry. Ib puag ncig tawm ntug kis cov ntshav hla qhov dav hneev taw, muab kev kho mob maj mam thiab lub neej ntev dua dielectric. Lub ntsej muag ntse concentrates lub zog rau kev kho mob hnyav ntawm tus nqi ntawm kev hnav sai dua.
Rau cov khoom siv hluav taws xob thiab rau cov neeg kho ntshav ntshav uas ua haujlwm ntawm atmospheric siab nrog dielectric barrier tawm, cov kev cai geometry hloov dua, vim tias qhov paug tawm yuav tsum tiv thaiv los ntawm kev tsim cov kab hluav taws xob.
Txias, Ntxuav thiab Kev Pabcuam Lub Neej
Corona tso tawm hloov ib feem tseem ceeb ntawm lub zog nkag mus rau hauv tshav kub. Qhov kub ntawd tsaws rau ntawm electrode, dielectric thiab lub vev xaib. Kev ua kom txias tsis yog xaiv tau rau siab -watt- kab ceev.
Cua txias yog txoj hauv kev yooj yim tshaj plaws: kev tswj cov huab cua thoob plaws qhov chaw tawm mus tshem tawm ozone thiab cua sov. Nws ua haujlwm zoo txog li nruab nrab watt ntom ntom thiab pheej yig los tswj. Cov dej txias, xws li los ntawm cov channel sab hauv hauv electrode lossis los ntawm yob nws tus kheej, yog qhov tsim nyog thaum khiav saum toj li 10 W ib square centimeter ib feeb, los yog thaum kho cua sov-sensitive substrates.
Ozone extraction thiab cua txias sib koom ducting nyob rau hauv ntau lub installation, uas yog vim li cas ib tug clogged extraction duct tshwm sim raws li ib tug kub tswb ua ntej. Tshawb xyuas ob leeg ua ke.
Kev ntxuav zaus yog dictated los ntawm substrate. Cov yeeb yaj kiab uas muaj cov khoom hnyav ntxiv lossis cov pob zeb hauv av tso cov hmoov tshauv dawb rau ntawm ntug electrode thiab dielectric. Qhov tso nyiaj ntawd yog dielectric nws tus kheej, yog li nws hloov qhov sib txawv zoo thiab ua rau banding. Tus kws kho mob corona electrode ntawm cov kab uas muaj polyolefin tuaj yeem xav tau kev tu txhua lub lim tiam, thaum cov kab huv BOPP tuaj yeem mus rau ntau lub hlis.
Taug qab lub electrode lub neej kev pab cuam los ntawm cov sij hawm tso tawm, tsis yog los ntawm lub sij hawm, thiab hloov ua ntej lub ntug profile puag ncig nws kam rau ua.
Sib piv Corona Tus Kws Kho Mob Electrode rau koj lub substrate
Cov substrates sib txawv xav tau cov tswv yim kho mob sib txawv. Polyolefins xws li polyethylene thiab polypropylene muaj lub zog nto qis thiab xav tau kev kho mob hnyav kom ncav cuag 38 txog 42 dynes ib centtimetre. Polyester thiab nylon pib siab dua thiab tsuas yog xav tau lub teeb hla mus txog 45 dynes.
Nyias cov yeeb yaj kiab hauv qab 20 microns yog qhov yooj yim rau kev kho sab nraub qaum thiab ua rau thermal distortion. Rau cov no, siv lub voj voog corona kho electrode, yob loj dua, qis dua watt ceev thiab kab nrawm dua kom kis tau lub zog.
Foils thiab metallised webs xav tau kev saib xyuas vim tias cov txheej txheem conductive tuaj yeem xa tawm tam sim no. Hauv cov xwm txheej no, tus kws kho mob corona electrode nrog lub voj voog txo qis, lossis lub tshuab kho ntshav plasma ua haujlwm hauv qhov chaw tswj hwm, feem ntau yog qhov kev xaiv zoo dua.
Extrusion txheej thiab lamination kab xav tau qhov siab tshaj plaws thiab feem ntau cov xim dyne vim tias cov molten polymer yog siv nyob rau hauv vib nas this ntawm kev kho mob. Tej banding nyob rau hauv qhov tso tawm qhia ncaj qha raws li adhesion tsis ua hauj lwm.
| Substrate | Hom dyne hom phiaj | Electrode profile | kwv tij watt ceev |
|---|---|---|---|
| LDPE / LLDPE zaj duab xis | 38–42 | Rounded hniav | Nruab nrab |
| BOPP zaj duab xis | 38–42 | Rounded hniav | Nruab nrab |
| PET zaj duab xis | 45–48 | Khau, segmented | Tsawg- nruab nrab |
| Metallised zaj duab xis | 44–50 | Txo lub luag haujlwm voj voog | Tsawg |
| Aluminium ntawv nyiaj | 42–46 | Khau, dej txias | Nruab nrab |
| Coated ntawv board | 40–44 | Khau | Siab |
| Conductive substrate | txheej txheem tshwj xeeb | DBD / ntshav | Tsawg |
Feem ntau yuam kev thaum qhia tus kws kho mob Corona Electrode
Ob peb qhov yuam kev tshwm sim ib zaug ntxiv hauv kev tshuaj xyuas cov chaw kho mob.
- Sizing lub electrode rau lub tshuab tsis siv lub vev xaib.Lub dav corona kho electrode khiav lub vev xaib nqaim pov tseg ntau dua li ib nrab ntawm nws lub zog thiab overheats thaj chaw tsis siv. Segmented electrodes los yog nqaim los ua ke them rau lawv tus kheej sai.
- Tsis quav ntsej lub dielectric thaum xaiv qhov profile.Ib tug ntse ntug ntawm ib tug ceramic- npog yob tawg lub txheej nyob rau hauv lub lis piam.
- Teem qhov sib txawv ib zaug thiab tsis nco qab nws.Kev vibration, thermal loj hlob thiab yob hloov txhua yam hloov qhov sib txawv. Nws yuav tsum yog ib feem ntawm kev saib xyuas niaj hnub.
- Txias tom qab qhov tseeb.Retrofitting dej txias rau huab cua-cooled corona kho electrode tsis tshua ua haujlwm zoo vim tias lub cev electrode tsis tau tsim los rau hauv cov channel.
- Ntsuas dyne tsuas yog nyob rau hauv nruab nrab.Ntug-rau- ntug kev sib xws yog qhov pov thawj tiag tiag uas tus kws kho mob corona electrode thiab dielectric sib raug zoo.
- Hloov cov electrode yam tsis tau kuaj xyuas lub yob.Ib tug hnav dielectric yuav rhuav tshem ib tug tshiab electrode.
FAQ
Q1: Ntev npaum li cas yuav tsum tau hloov tus kws kho mob corona electrode?
Hloov cov sij hawm tso tawm es tsis yog hnub nyoog daim ntawv teev npe. Feem ntau stainless hlau electrodes tuav lawv cov profile rau 8,000 txog 15,000 teev. Tshawb xyuas qhov tso tawm ntug txhua 2,000 teev thiab hloov thaum qhov profile tau pom qhov sib npaug lossis ntug qhia pitting.
Q2: Kuv puas tuaj yeem khiav corona kho electrode ntawm qhov sib txawv kom txo tau qhov arcing?
Kev nthuav dav qhov sib txawv yuav txo qhov kev pheej hmoo ntawm kev sib cuag nrog cov neeg kho tshuab tab sis nce qhov hluav taws xob xav tau rau kev tawg, uas ua rau ozone tsim thiab kub. Ua hauj lwm nyob rau hauv lub chaw tsim tshuaj paus qhov sib txawv qhov rais thiab kho cov hauv paus ntsiab lus ntawm arcing, feem ntau dielectric hnav los yog paug.
Q3: Dab tsi ua rau banding thoob plaws lub vev xaib?
Banding yuav luag ib txwm taug qab mus rau qhov tsis yog -cov khoom siv hluav taws xob corona kho electrode: hauv zos dielectric hnav, tshauv tsim- rau ntawm ntug, lub cev electrode khoov, lossis tsis sib xws. Tshawb xyuas cov electrode ua ntej, tom qab ntawd yob npog.
Q4: Puas yog ceramic - npog yob tsim nyog tus nqi ntxiv?
Yog ntawm ib txoj kab khiav saum nruab nrab watt ceev los yog ntau tshaj ib qho kev hloov hauv ib hnub. Lub neej ntev dua dielectric thiab qib kev kho mob ruaj khov feem ntau them rov qab tus nqi tsis pub dhau ob peb xyoos. Ceramic kuj nthuav dav lub qhov rais ua haujlwm, uas txo cov khoom seem thaum hloov khoom.
Q5: Kuv yuav paub li cas yog tias kuv lub substrate raug kho rau sab nraub qaum?
Kev kho sab nraub qaum qhia tau tias yog thaiv lossis adhesion ntawm lub ntsej muag rov qab, thiab raws li kev nyeem ntawv ntawm sab tsis kho. Nws feem ntau yog tshwm sim los ntawm qhov sib txawv me me, siab dhau watt ntom ntom, lossis corona kho electrode profile uas hnyav dhau rau cov yeeb yaj kiab tuab.
Q6: Cov khoom siv electrode puas cuam tshuam rau qib dyne?
Tsis ncaj. Cov khoom siv cuam tshuam tus nqi yaig, kev ua haujlwm txias thiab kev pabcuam lub neej. Qib Dyne yog tswj hwm los ntawm qhov sib txawv, lub zog, lub sijhawm nyob thiab lub vev xaib kub. Uas tau hais tias, ib qho hluav taws xob eroding ua rau muaj qhov tsis sib xws, yog li kev xaiv cov khoom siv qhia tau ncaj qha rau hauv qhov tsis sib xws.
Q7: Dab tsi watt ceev kuv yuav tsum pib nrog?
Pib ntawm cov chaw tsim khoom tau pom zoo lub hauv paus rau koj tsev neeg substrate, feem ntau nyob ib ncig ntawm 5 mus rau 8 W ib square centimeter ib feeb rau polyolefin films, thiab kho upwards nyob rau hauv me me theem thaum ntsuas dyne theem thoob plaws lub web dav.
Xaus
Xaiv tus kws kho mob corona electrode yog qhov kev txiav txim siab hauv lub cev. Cov khoom siv, profile, qhov sib txawv, dielectric thiab txias txhua qhov sib cuam tshuam, thiab kev hloov mus rau ib qho hloov mus rau lwm tus. Txoj kev txhim khu kev qha yog los txhais cov substrate, qhov yuav tsum tau dyne theem thiab cov kab ceev ua ntej, ces loj cov electrode thiab nws dielectric mus ntaus lub hom phiaj nrog qhov tsawg kawg nkaus watt ceev.
Shenzhen Hefeng Jiada Technology tsim cov kws kho mob corona, cov tshuab kho ntshav ntshav thiab tiv tauj lub vev xaib tu tshuab tsim nyob ib puag ncig raws nraim qhov kev tsim vaj tsev no. Yog tias koj tab tom qhia txog qhov chaw nres tsheb tshiab lossis rov tsim kho ib qho uas twb muaj lawm, xa peb koj cov substrate, dav thiab lub hom phiaj dyne theem thiab peb cov kws ua haujlwm yuav pom zoo rau txoj cai corona kho electrode thiab yob configuration rau koj cov kab.