1. Yuav ua li cas thaum tus number case yog kho lawm?Muaj ib txoj kev xav tias thaum tus number case nto raug ultraviolet ntau dhau, nws yuav nyuaj thiab nyuaj. Thaum tib neeg luam lwm tus cwj mem rau ntawm cov yeeb yaj kiab tawv tawv thiab qhuav nws zaum ob, qhov adhesion ntawm cov khaubncaws sab nraud povtseg sab sauv thiab sab qis yuav ua rau cov neeg pluag heev.
Lwm txoj kev xav yog tias over-curing yuav ua rau photo-oxidation ntawm tus number case nto. Diam duab-oxidation yuav rhuav tshem cov tshuaj tiv thaiv ntawm qhov chaw ntawm tus number case zaj duab xis. Yog tias cov ntawv cog lus molecular ntawm qhov chaw ntawm tus number case zaj duab xis yog degraded los yog puas, qhov adhesion ntawm nws thiab lwm txheej number case yuav raug txo. Over-kho ink films tsis yog tsuas yog hloov tau yooj yim, tab sis kuj ua rau nto embrittlement.
2. Vim li cas qee qhov UV inks kho sai dua lwm tus?UV inks feem ntau yog tsim raws li cov yam ntxwv ntawm qee cov substrates thiab cov kev cai tshwj xeeb ntawm qee yam kev siv. Los ntawm kev pom tshuaj, qhov ceev ntawm tus number case kho, qhov ua rau nws yooj yim dua tom qab kho. Raws li koj tuaj yeem xav, thaum tus number case kho tau zoo, tus number case molecules yuav raug cuam tshuam los ntawm kev sib txuas. Yog hais tias cov molecules no tsim ib tug loj tus naj npawb ntawm molecular chains nrog ntau ceg, tus number case yuav kho sai sai, tab sis yuav tsis hloov heev; Yog hais tias cov molecules no tsim ib tug me me ntawm molecular chains tsis muaj ceg, tus number case yuav kho tau qeeb tab sis nws yeej yuav hloov tau heev. Feem ntau cov inks yog tsim los ntawm cov ntawv thov. Piv txwv li, rau cov inks tsim los tsim cov membrane hloov, cov ntaub ntawv kho mob yuav tsum tau sib xws nrog cov nplaum sib xyaw thiab hloov tau yooj yim txaus los hloov mus rau kev ua tom ntej xws li tuag-txiav thiab embossing.
Nws yog ib nqi sau cia hais tias cov tshuaj raw cov ntaub ntawv uas siv nyob rau hauv tus number case tsis tuaj yeem hnov mob nrog lub substrate, txwv tsis pub nws yuav ua rau tawg, tawg lossis delamination. Xws li inks feem ntau kho tau qeeb. Inks tsim los rau kev tsim cov ntawv lossis cov khoom siv yas tawv tawv tsis xav tau qhov kev hloov pauv siab thiab qhuav sai nyob ntawm daim ntawv thov. Txawm hais tias tus number case dries sai los yog maj mam, peb yuav tsum pib los ntawm daim ntawv thov zaum kawg. Lwm qhov teeb meem tsim nyog sau cia yog cov cuab yeej kho. Qee tus inks tuaj yeem kho tau sai, tab sis vim qhov ua haujlwm tsis zoo ntawm cov cuab yeej kho, qhov kev kho ceev ntawm tus number case yuav qeeb los yog kho tsis tiav.
3. Vim li cas polycarbonate (PC) zaj duab xis tig daj thaum kuv siv UV number case?Polycarbonate yog rhiab heev rau ultraviolet rays nrog lub wavelength tsawg dua 320 nanometers. Lub yellowing ntawm zaj duab xis nto yog tshwm sim los ntawm kev tawg ntawm cov saw molecular los ntawm photooxidation. Cov yas molecular bonds nqus ultraviolet lub zog thiab tsim cov dawb radicals. Cov dawb radicals no hnov mob nrog oxygen hauv huab cua thiab hloov cov tsos thiab lub cev ntawm cov yas.
4. Yuav ua li cas kom tsis txhob los yog tshem tawm cov yellowing ntawm polycarbonate nto?Yog tias UV number case yog siv los luam tawm ntawm polycarbonate zaj duab xis, qhov yellowing ntawm nws saum npoo tuaj yeem raug txo, tab sis nws tsis tuaj yeem tshem tawm tag nrho. Kev siv cov qij kho nrog cov hlau ntxiv lossis gallium tuaj yeem txo qhov tshwm sim ntawm qhov yellowing. Cov qij no yuav txo qhov emission ntawm luv luv-yoj ultraviolet rays kom tsis txhob muaj kev puas tsuaj rau polycarbonate. Tsis tas li ntawd, kev kho kom zoo txhua tus cwj mem xim kuj tseem yuav pab txo qis lub sij hawm raug ntawm lub substrate rau ultraviolet lub teeb thiab txo qhov muaj peev xwm ntawm discoloration ntawm polycarbonate zaj duab xis.
5.Dab tsi yog qhov kev sib raug zoo ntawm qhov chaw teeb tsa (watts ib nti) ntawm UV kho teeb thiab kev nyeem ntawv peb pom ntawm lub xov tooj cua (watts ib square centimeter lossis milliwatts ib square centimeter)?
Watts ib nti yog lub hwj chim ntawm lub teeb kho, uas yog muab los ntawm Ohm txoj cai volts (voltage) x amps (tam sim no) = watts (power); thaum watts ib square centimeter los yog milliwatts ib square centimeter sawv cev rau lub ncov illuminance (UV zog) ib cheeb tsam ib cheeb tsam thaum lub xov tooj cua kis nyob rau hauv lub curing teeb. Peak illuminance nyob ntawm lub zog ntawm lub teeb kho. Yog vim li cas vim li cas peb siv watts los ntsuas qhov siab tshaj plaws illuminance yog vim nws sawv cev rau lub zog hluav taws xob siv los ntawm lub teeb kho. Ntxiv nrog rau cov hluav taws xob tau txais los ntawm lub tsev kho mob, lwm yam uas cuam tshuam rau lub siab tshaj plaws illuminance muaj xws li cov xwm txheej thiab cov duab ntawm lub reflector, lub hnub nyoog ntawm lub teeb kho, thiab qhov kev ncua deb ntawm lub teeb kho thiab qhov curing nto.
6. Qhov txawv ntawm millijoules thiab milliwatts yog dab tsi?Tag nrho lub zog irradiated rau ib qho chaw tshwj xeeb tshaj ib lub sij hawm ntawm lub sij hawm feem ntau yog qhia nyob rau hauv joules ib ca centimeter los yog millijoules ib square centimeter. Nws yog feem ntau cuam tshuam nrog kev ceev ntawm txoj siv conveyor, lub zog, tus naj npawb, hnub nyoog, xwm txheej ntawm lub teeb kho, thiab cov duab thiab cov xwm txheej ntawm cov reflectors hauv kev kho. Lub zog ntawm UV zog lossis hluav taws xob hluav taws xob irradiated rau ib qho chaw tshwj xeeb yog qhia hauv watts / square centimeter lossis milliwatts / square centimeter. Qhov siab dua UV zog irradiated rau saum npoo ntawm substrate, lub zog ntau nkag mus rau hauv cov yeeb yaj kiab number case. Txawm hais tias nws yog milliwatts lossis millijoules, nws tsuas yog ntsuas tau thaum lub wavelength rhiab heev ntawm lub ntsuas hluav taws xob ua tau raws li qee qhov yuav tsum tau ua.
7. Peb yuav ua li cas thiaj li kho tau qhov zoo ntawm UV number case?Kev kho ntawm tus cwj mem zaj duab xis thaum nws dhau los ntawm chav kho mob thawj zaug yog qhov tseem ceeb heev. Kev kho kom zoo tuaj yeem txo qhov deformation ntawm substrate, over-curing, re-wetting thiab under-curing, thiab optimize lub adhesion ntawm tus number case thiab kev lom zem los yog nruab nrab ntawm cov txheej. Screen luam ntawv cov nroj tsuag yuav tsum txiav txim siab qhov ntau lawm tsis ua ntej ntau lawm pib. Txhawm rau kuaj xyuas qhov ua tau zoo ntawm UV number case, peb tuaj yeem pib luam tawm ntawm qhov qis tshaj plaws uas tau tso cai los ntawm substrate thiab kho cov qauv luam tawm ua ntej. Tom qab ntawd, teeb lub zog ntawm lub teeb kho kom zoo rau tus nqi teev los ntawm tus neeg tsim khoom number case. Thaum soj ntsuam cov xim uas tsis yooj yim rau kev kho, xws li dub thiab dawb, peb tuaj yeem tsim kho qhov teeb meem ntawm kev kho lub teeb. Tom qab cov ntawv luam tawm txias, peb tuaj yeem siv cov duab ntxoov ntxoo bidirectional los txiav txim siab qhov adhesion ntawm tus number case zaj duab xis. Yog tias tus qauv tuaj yeem dhau qhov kev xeem zoo, daim ntawv conveyor ceev tuaj yeem nce 10 ko taw ib feeb, thiab tom qab ntawd luam tawm thiab kuaj tuaj yeem ua tiav kom txog rau thaum tus number case zaj duab xis poob adhesion rau substrate, thiab conveyor siv ceev thiab curing teeb tsis. nyob rau lub sijhawm no raug kaw. Tom qab ntawd, txoj siv conveyor ceev tuaj yeem raug txo los ntawm 20-30% raws li cov yam ntxwv ntawm tus cwj mem los yog cov lus pom zoo ntawm tus neeg xa ntawv number case.
8. Yog tias cov xim tsis sib tshooj, kuv puas yuav txhawj xeeb txog kev kho ntau dhau?Over-curing tshwm sim thaum nto ntawm tus number case zaj duab xis absorbs UV teeb ntau dhau. Yog tias qhov teeb meem no tsis pom thiab daws tau raws sijhawm, qhov chaw ntawm tus number case zaj duab xis yuav nyuaj thiab nyuaj. Tau kawg, tsuav yog peb tsis ua cov xim overprinting, peb tsis tas yuav txhawj xeeb txog qhov teeb meem no. Txawm li cas los xij, peb yuav tsum xav txog lwm yam tseem ceeb, uas yog zaj duab xis lossis substrate raug luam tawm. UV teeb tuaj yeem cuam tshuam rau feem ntau ntawm cov substrate thiab qee cov yas uas nkag siab rau UV teeb ntawm qee qhov wavelength. Qhov no rhiab heev rau tej wavelengths ua ke nrog oxygen nyob rau hauv cov huab cua yuav ua rau degradation ntawm cov yas nto. Molecular bonds ntawm lub substrate nto tuaj yeem tawg thiab ua rau cov adhesion ntawm UV number case thiab substrate ua tsis tiav. Lub degradation ntawm lub substrate nto muaj nuj nqi yog ib tug gradual txheej txheem thiab yog ncaj qha cuam tshuam rau lub UV lub teeb lub zog nws tau txais.
9. Puas yog UV number case yog xim ntsuab? Vim li cas?Piv nrog cov kuab tshuaj raws li cov kuab tshuaj, UV inks yog qhov tseeb ntau tus phooj ywg ib puag ncig. UV-curable inks tuaj yeem dhau los ua 100% khoom, uas txhais tau hais tias tag nrho cov khoom ntawm tus number case yuav dhau los ua tus cwj mem kawg.
Cov kuab tshuaj raws li cov kuab tshuaj, ntawm qhov tod tes, yuav tso cov kuab tshuaj mus rau hauv cov huab cua raws li tus number case zaj duab xis dries. Txij li cov kuab tshuaj yog volatile organic tebchaw, lawv muaj teeb meem rau ib puag ncig.
10. Dab tsi yog qhov ntsuas ntsuas rau cov ntaub ntawv ceev uas pom ntawm lub ntsuas densitometer?Optical density tsis muaj units. Lub densitometer ntsuas tus nqi ntawm lub teeb pom kev los yog kis tau los ntawm cov ntawv luam tawm. Lub qhov muag photoelectric txuas nrog lub densitometer tuaj yeem hloov qhov feem pua ntawm qhov cuam tshuam los yog kis lub teeb mus rau hauv tus nqi ntom.
11. Yam dab tsi cuam tshuam rau qhov ntom ntom?Hauv kev tshuaj ntsuam luam ntawv, tus hloov pauv uas cuam tshuam rau qhov tseem ceeb muaj nuj nqis yog tsuas yog ink fickness, xim, loj thiab xim ntawm lub substrate. Optical density yog txiav txim siab los ntawm opacity thiab thickness ntawm tus number case zaj duab xis, uas nyob rau hauv lem yog cuam tshuam los ntawm qhov loj thiab tus naj npawb ntawm pigment hais thiab lawv lub teeb haum thiab scattering zog.
12. Dab tsi yog dyne theem?Dyne / cm yog ib chav tsev siv los ntsuas qhov nro. Qhov nro no yog tshwm sim los ntawm kev sib cuam tshuam ntawm cov kua (nto nro) los yog khoom (nto zog). Rau cov tswv yim, peb feem ntau hu qhov parameter dyne theem. Qib dyne lossis lub zog saum npoo ntawm ib qho substrate sawv cev rau nws qhov kev ntub dej thiab cov kua nplaum nplaum. Lub zog saum npoo yog lub cev muaj zog ntawm ib yam khoom. Ntau cov yeeb yaj kiab thiab cov substrates siv hauv kev luam ntawv muaj qib qis, xws li 31 dyne / cm polyethylene thiab 29 dyne / cm polypropylene, thiab yog li yuav tsum tau kho tshwj xeeb. Kev kho kom zoo tuaj yeem nce qib dyne ntawm qee qhov substrates, tab sis tsuas yog ib ntus xwb. Thaum koj npaj txhij luam tawm, muaj lwm yam cuam tshuam rau dyne theem ntawm substrate, xws li: lub sij hawm thiab tus naj npawb ntawm kev kho mob, cia tej yam kev mob, ambient humidity thiab plua plav theem. Txij li cov qib dyne tuaj yeem hloov pauv raws sijhawm, feem ntau cov tshuab luam ntawv xav tias nws tsim nyog los kho lossis rov kho cov yeeb yaj kiab ua ntej luam ntawv.
13. Kev kho cov nplaim taws ua li cas?Plastics yog inherently non-porous thiab muaj ib tug inert nto (tsawg nto zog). Kev kho nplaim taws yog ib txoj hauv kev kho cov yas ua ntej kom nce qib dyne ntawm lub substrate nto. Ntxiv nrog rau lub teb ntawm lub raj mis yas luam ntawv, txoj kev no kuj tau siv dav hauv kev lag luam tsheb thiab kev ua yeeb yaj kiab. Kev kho nplaim taws tsis yog tsuas yog ua kom lub zog saum npoo, tab sis kuj tshem tawm cov kab mob ntawm qhov chaw.Ntiaj teb kev kho mob muaj ntau yam kev cuam tshuam ntawm lub cev thiab tshuaj lom neeg. Lub cev txheej txheem ntawm kev kho cov nplaim hluav taws yog tias cov nplaim hluav taws kub hloov pauv lub zog rau cov roj thiab cov impurities ntawm qhov chaw ntawm lub substrate, ua rau lawv evaporate hauv qab cua sov thiab ua lub luag haujlwm tu; thiab nws cov txheej txheem tshuaj yog tias cov nplaim muaj ntau cov ions, uas muaj zog oxidizing zog. Nyob rau hauv qhov kub thiab txias, nws reacts nrog rau saum npoo ntawm cov khoom kho los ua ib txheej ntawm cov polar functional pawg nyob rau saum npoo ntawm cov khoom kho, uas ua rau nws lub zog nto thiab yog li ua rau nws muaj peev xwm nqus tau cov kua.
14. Kev kho mob corona yog dab tsi?Corona tso tawm yog lwm txoj hauv kev kom nce qib dyne. Los ntawm kev siv hluav taws xob siab rau cov xov xwm cov menyuam, cov cua nyob ib puag ncig tuaj yeem ua ionized. Thaum lub substrate dhau los ntawm qhov chaw ionized no, cov molecular bonds ntawm cov khoom yuav tawg. Txoj kev no feem ntau yog siv nyob rau hauv rotary printing ntawm nyias zaj duab xis cov ntaub ntawv.
15. Plasticizer cuam tshuam li cas rau adhesion ntawm number case ntawm PVC?Plasticizer yog ib yam tshuaj uas ua rau cov ntaub ntawv luam tawm softer thiab hloov tau yooj yim dua. Nws yog dav siv hauv PVC (polyvinyl chloride). Hom thiab ntau npaum li cas ntawm cov yas ntxiv rau PVC los yog lwm yam yas yog nyob ntawm tib neeg cov kev xav tau rau kev siv tshuab, cua sov dissipation thiab hluav taws xob khoom ntawm cov ntaub ntawv luam tawm. Plasticizers muaj peev xwm tsiv mus nyob rau hauv lub substrate nto thiab cuam tshuam rau number case adhesion. Plasticizers uas nyob twj ywm rau ntawm lub substrate nto yog cov kab mob uas txo lub zog ntawm lub substrate. Cov kab mob ntau dua ntawm qhov chaw, qhov qis zog ntawm qhov chaw thiab qhov adhesion tsawg dua nws yuav tsum tau number case. Txhawm rau zam qhov no, ib tus tuaj yeem ntxuav cov substrates nrog cov tshuaj ntxuav me me ua ntej luam ntawv los txhim kho lawv cov ntawv luam tawm.
16. Kuv xav tau pes tsawg lub teeb rau kho?Txawm hais tias tus number case system thiab hom substrate sib txawv, feem ntau, ib lub teeb curing system yog txaus. Tau kawg, yog tias koj muaj peev nyiaj txaus, koj tuaj yeem xaiv lub teeb kho dual-teeb kom ua kom qhov kho ceev. Yog vim li cas vim li cas ob lub teeb kho kom zoo dua li ib qho yog tias lub teeb ci dual teeb tuaj yeem muab ntau lub zog rau lub substrate ntawm tib qhov kev sib hloov ceev thiab qhov ntsuas qhov ntsuas. Ib qho ntawm cov teeb meem tseem ceeb uas peb yuav tsum xav txog yog seb lub tsev kho puas tuaj yeem ziab cov ntawv luam tawm ntawm qhov ceev ceev.
17. Cov viscosity ntawm tus number case cuam tshuam li cas rau kev luam ntawv?Feem ntau cov inks yog thixotropic, uas txhais tau hais tias lawv viscosity hloov nrog shear, lub sij hawm thiab kub. Tsis tas li ntawd, qhov siab dua tus nqi shear, qhov viscosity ntawm tus number case qis dua; qhov siab dua qhov ntsuas kub, qhov qis dua txhua xyoo viscosity ntawm tus number case. Kev tshuaj ntsuam luam ntawv inks feem ntau ua tiav cov txiaj ntsig zoo ntawm cov ntawv luam tawm, tab sis qee zaus yuav muaj teeb meem nrog kev luam tawm nyob ntawm qhov chaw luam ntawv xovxwm thiab kev hloov pauv ua ntej. Lub viscosity ntawm tus cwj mem ntawm lub tshuab luam ntawv kuj txawv ntawm nws cov viscosity hauv cov number case cartridge. Ink manufacturers teem ib tug viscosity ntau yam rau lawv cov khoom. Rau inks uas nyias dhau los yog muaj viscosity tsawg dhau, cov neeg siv tuaj yeem ntxiv cov thickeners kom tsim nyog; rau inks uas tuab dhau los yog muaj viscosity siab dhau lawm, cov neeg siv tuaj yeem ntxiv cov diluents. Tsis tas li ntawd, koj tuaj yeem tiv tauj tus neeg muag khoom tus cwj mem rau cov ntaub ntawv khoom.
18. Dab tsi cuam tshuam rau kev ruaj ntseg lossis txee lub neej ntawm UV inks?Ib qho tseem ceeb cuam tshuam rau kev ruaj ntseg ntawm inks yog qhov cia ntawm tus number case. UV inks feem ntau yog khaws cia rau hauv cov yas number case cartridges ntau dua li cov hlau number case cartridges vim tias cov thawv yas muaj qee qhov kev nkag siab ntawm oxygen permeability, uas tuaj yeem ua kom ntseeg tau tias muaj qee qhov sib txawv ntawm huab cua ntawm tus number case thiab lub thawv ntim. Qhov kev sib txawv ntawm huab cua no - tshwj xeeb tshaj yog cov pa oxygen hauv huab cua - pab txo qis kev sib txuas ntawm tus number case ntxov ntxov. Ntxiv nrog rau kev ntim khoom, qhov kub ntawm lub thawv ntim kuj tseem ceeb heev rau kev tswj xyuas lawv qhov ruaj khov. Kev kub siab tuaj yeem ua rau muaj kev cuam tshuam ntxov ntxov thiab kev sib txuas ntawm cov inks. Kev hloov kho rau tus cwj pwm thawj zaug kuj tuaj yeem cuam tshuam rau lub txee ruaj khov ntawm tus number case. Cov khoom siv ntxiv, tshwj xeeb tshaj yog cov catalysts thiab photoinitiators, tuaj yeem ua rau lub txee lub neej luv ntawm tus number case.
19. Dab tsi yog qhov txawv ntawm daim ntawv lo rau hauv pwm (IML) thiab hauv pwm kho kom zoo nkauj (IMD)?Nyob rau hauv-pwm labeling thiab nyob rau hauv-pwm kho kom zoo nkauj yeej txhais tau tias tib yam, uas yog, ib daim ntawv lo los yog zoo nkauj zaj duab xis (preformed los yog tsis) muab tso rau hauv pwm thiab molten yas txhawb nws thaum lub sij hawm tsim. Cov ntawv lo siv rau yav dhau los yog tsim los siv cov tshuab luam ntawv sib txawv, xws li gravure, offset, flexographic lossis screen printing. Cov ntawv sau no feem ntau yog luam tawm tsuas yog nyob rau saum npoo ntawm cov khoom, thaum lub sab tsis luam tawm yog txuas nrog cov pwm txhaj tshuaj. Kev kho kom zoo nkauj hauv pwm feem ntau yog siv los tsim cov khoom ruaj khov thiab feem ntau yog luam tawm ntawm qhov thib ob ntawm cov yeeb yaj kiab pob tshab. Kev kho kom zoo nkauj hauv pwm feem ntau yog luam tawm siv lub tshuab luam ntawv tshuaj ntsuam, thiab cov yeeb yaj kiab thiab UV inks siv yuav tsum sib haum nrog kev txhaj tshuaj pwm.
20. Yuav ua li cas yog tias siv nitrogen curing unit los kho cov xim UV inks?Kev kho tshuab uas siv nitrogen los kho cov khoom luam tawm tau muaj ntau tshaj kaum xyoo. Cov tshuab no tsuas yog siv rau hauv cov txheej txheem kho ntawm textiles thiab membrane keyboards. Nitrogen yog siv los hloov cov pa oxygen vim tias oxygen inhibits kev kho ntawm inks. Txawm li cas los xij, txij li lub teeb los ntawm qhov muag teev hauv cov tshuab no tsawg heev, lawv tsis muaj txiaj ntsig zoo hauv kev kho cov pigments lossis cov xim xim.
Post lub sij hawm: Oct-24-2024
