1. Yuav ua li cas thaum cov kua mem qhuav dhau lawm?Muaj ib txoj kev xav tias thaum cov kua mem raug rau lub teeb ultraviolet ntau dhau, nws yuav nyuaj dua thiab nyuaj dua. Thaum tib neeg luam lwm cov kua mem rau ntawm zaj duab xis kua mem no thiab ziab nws rau lub sijhawm thib ob, qhov kev sib txuas ntawm cov txheej kua mem sab saud thiab sab qis yuav tsis zoo heev.
Lwm lub tswv yim yog tias kev kho ntau dhau yuav ua rau muaj kev sib txhuam ntawm cov duab ntawm cov kua mem. Kev sib txhuam ntawm cov duab yuav rhuav tshem cov tshuaj sib txuas ntawm qhov chaw ntawm cov zaj duab xis kua mem. Yog tias cov kev sib txuas molecular ntawm qhov chaw ntawm cov zaj duab xis kua mem raug puas tsuaj lossis puas tsuaj, qhov kev sib txuas ntawm nws thiab lwm txheej kua mem yuav raug txo qis. Cov zaj duab xis kua mem uas kho ntau dhau tsis yog tsuas yog tsis yooj ywm xwb, tab sis kuj yooj yim rau qhov chaw tawg.
2. Vim li cas qee cov kua UV thiaj li kho sai dua li lwm cov?Feem ntau cov kua mem UV yog tsim raws li cov yam ntxwv ntawm qee cov substrates thiab cov kev xav tau tshwj xeeb ntawm qee qhov kev siv. Los ntawm qhov pom ntawm tshuaj lom neeg, qhov sai dua cov kua mem kho, qhov phem dua nws qhov yooj ywm tom qab kho. Raws li koj tuaj yeem xav, thaum cov kua mem kho, cov kua mem molecules yuav dhau los ntawm kev sib txuas lus sib txuas. Yog tias cov molecules no tsim ntau cov saw hlau molecular nrog ntau ceg, cov kua mem yuav kho sai tab sis yuav tsis yooj ywm heev; yog tias cov molecules no tsim me ntsis ntawm cov saw hlau molecular tsis muaj ceg, cov kua mem yuav kho qeeb tab sis yuav yooj ywm heev. Feem ntau cov kua mem yog tsim raws li cov kev xav tau ntawm daim ntawv thov. Piv txwv li, rau cov kua mem tsim rau kev tsim cov hloov pauv membrane, cov yeeb yaj kiab kua mem kho yuav tsum sib xws nrog cov nplaum sib xyaw thiab yooj ywm txaus los hloov kho rau cov txheej txheem tom ntej xws li kev txiav tuag thiab embossing.
Nws yog ib qho tsim nyog sau tseg tias cov khoom siv tshuaj lom neeg siv rau hauv cov kua mem tsis tuaj yeem cuam tshuam nrog qhov chaw ntawm lub substrate, txwv tsis pub nws yuav ua rau tawg, tawg lossis delamination. Cov kua mem no feem ntau kho qeeb. Cov kua mem uas tsim los rau kev tsim cov ntawv lossis cov yas tawv zaub tsis xav tau kev ywj pheej siab thiab qhuav sai nyob ntawm qhov yuav tsum tau ua ntawv thov. Txawm hais tias cov kua mem qhuav sai lossis qeeb, peb yuav tsum pib los ntawm daim ntawv thov zaum kawg. Lwm qhov teeb meem tsim nyog sau tseg yog cov khoom siv kho. Qee cov kua mem tuaj yeem kho sai, tab sis vim yog qhov ua tau zoo tsawg ntawm cov khoom siv kho, qhov ceev kho ntawm cov kua mem yuav qeeb lossis kho tsis tiav.
3. Vim li cas daim zaj duab xis polycarbonate (PC) thiaj li daj thaum kuv siv UV number case?Polycarbonate rhiab heev rau cov teeb ci ultraviolet nrog qhov ntev tsawg dua 320 nanometers. Qhov daj ntawm qhov chaw zaj duab xis yog tshwm sim los ntawm kev tawg ntawm cov saw hlau molecular los ntawm photooxidation. Cov yas molecular bonds nqus cov teeb ci ultraviolet thiab tsim cov free radicals. Cov free radicals no react nrog oxygen hauv huab cua thiab hloov pauv qhov tsos thiab lub cev ntawm cov yas.
4. Yuav ua li cas kom tsis txhob lossis tshem tawm qhov daj ntawm qhov chaw polycarbonate?Yog siv cov kua mem UV los luam tawm rau ntawm zaj duab xis polycarbonate, qhov daj ntawm nws qhov chaw tuaj yeem txo tau, tab sis nws tsis tuaj yeem tshem tawm tag nrho. Kev siv cov teeb kho nrog hlau lossis gallium ntxiv tuaj yeem txo qhov tshwm sim ntawm qhov daj no. Cov teeb no yuav txo qhov kev tso tawm ntawm cov duab luv luv ultraviolet kom tsis txhob muaj kev puas tsuaj rau polycarbonate. Tsis tas li ntawd, kev kho kom zoo txhua xim kua mem kuj tseem yuav pab txo lub sijhawm raug lub teeb ultraviolet ntawm lub substrate thiab txo qhov ua tau ntawm kev hloov pauv ntawm zaj duab xis polycarbonate.
5. Kev sib raug zoo ntawm cov kev teeb tsa (watts ib nti) ntawm lub teeb UV curing thiab cov nyeem uas peb pom ntawm lub radiometer (watts ib square centimeter lossis milliwatts ib square centimeter) yog dab tsi?
Watts ib nti yog lub zog ntawm lub teeb kho, uas yog los ntawm Ohm txoj cai volts (voltage) x amps (tam sim no) = watts (power); thaum watts ib square centimeter lossis milliwatts ib square centimeter sawv cev rau qhov kaj siab tshaj plaws (UV zog) ib cheeb tsam thaum lub radiometer hla dhau lub teeb kho. Qhov kaj siab tshaj plaws nyob ntawm lub zog ntawm lub teeb kho. Qhov laj thawj uas peb siv watts los ntsuas qhov kaj siab tshaj plaws yog vim nws sawv cev rau lub zog hluav taws xob siv los ntawm lub teeb kho. Ntxiv rau qhov ntau ntawm hluav taws xob tau txais los ntawm chav kho, lwm yam uas cuam tshuam rau qhov kaj siab tshaj plaws suav nrog qhov xwm txheej thiab geometry ntawm lub reflector, lub hnub nyoog ntawm lub teeb kho, thiab qhov deb ntawm lub teeb kho thiab qhov chaw kho.
6. Qhov txawv ntawm millijoules thiab milliwatts yog dab tsi?Tag nrho lub zog uas raug hluav taws xob rau ib qho chaw tshwj xeeb rau ib lub sijhawm twg feem ntau yog qhia hauv joules ib centimeter tiaj tus lossis millijoules ib square centimeter. Nws feem ntau yog cuam tshuam nrog qhov ceev ntawm txoj siv conveyor, lub zog, tus lej, hnub nyoog, xwm txheej ntawm cov teeb kho, thiab cov duab thiab cov xwm txheej ntawm cov reflectors hauv lub kaw lus kho. Lub zog ntawm lub zog UV lossis lub zog hluav taws xob uas raug hluav taws xob rau ib qho chaw tshwj xeeb feem ntau yog qhia hauv watts / square centimeter lossis milliwatts / square centimeter. Lub zog UV siab dua uas raug hluav taws xob rau ntawm qhov chaw ntawm lub substrate, lub zog ntau dua nkag mus rau hauv zaj duab xis number case. Txawm hais tias nws yog milliwatts lossis millijoules, nws tsuas yog ntsuas tau thaum qhov wavelength rhiab heev ntawm lub radiometer ua tau raws li qee qhov yuav tsum tau ua.
7. Peb yuav ua li cas thiaj paub tseeb tias cov kua UV kho tau zoo?Qhov kev kho kom zoo ntawm cov yeeb yaj kiab kua mem thaum nws hla dhau lub tshuab kho thawj zaug yog qhov tseem ceeb heev. Kev kho kom zoo tuaj yeem txo qhov kev hloov pauv ntawm cov substrate, kev kho kom zoo dua, kev rov ntub dua thiab kev kho kom tsis zoo, thiab ua kom zoo dua qhov kev sib txuas ntawm cov kua mem thiab cov xim av lossis ntawm cov txheej. Cov chaw luam ntawv yuav tsum txiav txim siab cov txheej txheem tsim khoom ua ntej pib tsim khoom. Txhawm rau sim qhov kev ua haujlwm ntawm cov kua mem UV, peb tuaj yeem pib luam ntawv ntawm qhov ceev qis tshaj plaws uas lub substrate tso cai thiab kho cov qauv luam ntawv ua ntej. Tom qab ntawd, teeb tsa lub zog ntawm lub teeb kho kom raug rau tus nqi uas tus neeg tsim khoom kua mem tau teev tseg. Thaum cuam tshuam nrog cov xim uas tsis yooj yim kho, xws li dub thiab dawb, peb kuj tuaj yeem nce cov txheej txheem ntawm lub teeb kho kom zoo. Tom qab daim ntawv luam tawm txias, peb tuaj yeem siv txoj kev ntxoov ntxoo ob sab los txiav txim siab qhov kev sib txuas ntawm cov yeeb yaj kiab kua mem. Yog tias cov qauv tuaj yeem dhau qhov kev xeem zoo, qhov ceev ntawm daim ntawv xa khoom tuaj yeem nce ntxiv 10 ko taw ib feeb, thiab tom qab ntawd luam ntawv thiab kev sim tuaj yeem ua tiav kom txog thaum cov yeeb yaj kiab kua mem poob qhov kev sib txuas rau cov substrate, thiab qhov ceev ntawm txoj siv sia thiab cov txheej txheem kho lub teeb kho lub sijhawm no raug sau tseg. Tom qab ntawd, qhov ceev ntawm txoj siv conveyor tuaj yeem txo tau 20-30% raws li cov yam ntxwv ntawm lub kaw lus number case lossis cov lus pom zoo ntawm tus neeg muag khoom number case.
8. Yog tias cov xim tsis sib tshooj, kuv puas yuav tsum txhawj xeeb txog kev kho kom zoo dua?Qhov kev kho kom zoo dhau tshwm sim thaum qhov chaw ntawm zaj duab xis number case nqus tau ntau lub teeb UV. Yog tias qhov teeb meem no tsis raug tshawb pom thiab daws tau raws sijhawm, qhov chaw ntawm zaj duab xis number case yuav tawv dua thiab tawv dua. Tau kawg, tsuav yog peb tsis ua xim overprinting, peb tsis tas yuav txhawj ntau 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 uas raug luam tawm. Lub teeb UV tuaj yeem cuam tshuam rau feem ntau ntawm cov substrate nto thiab qee cov yas uas rhiab rau lub teeb UV ntawm qee qhov wavelength. Qhov kev rhiab heev rau cov wavelengths tshwj xeeb ua ke nrog cov pa oxygen hauv huab cua tuaj yeem ua rau lub ntsej muag yas puas tsuaj. Cov kev sib txuas molecular ntawm qhov chaw substrate tuaj yeem tawg thiab ua rau qhov kev sib txuas ntawm UV number case thiab lub substrate tsis ua haujlwm. Kev puas tsuaj ntawm qhov chaw substrate yog ib qho txheej txheem maj mam thiab muaj feem cuam tshuam ncaj qha rau lub zog UV teeb uas nws tau txais.
9. Cov kua UV puas yog kua ntsuab? Vim li cas?Piv rau cov kua mem uas siv cov kuab tshuaj, cov kua mem UV yeej zoo rau ib puag ncig dua. Cov kua mem UV kho tau tuaj yeem khov tau 100%, uas txhais tau tias txhua yam ntawm cov kua mem yuav dhau los ua zaj duab xis kua mem kawg.
Cov kua xim uas muaj cov kuab tshuaj, ntawm qhov tod tes, yuav tso cov kuab tshuaj mus rau hauv huab cua thaum cov kua xim qhuav. Vim tias cov kuab tshuaj yog cov organic sib xyaw ua ke uas yaj tau yooj yim, lawv ua rau ib puag ncig puas tsuaj.
10. Lub chav ntsuas rau cov ntaub ntawv ceev uas tso tawm rau ntawm lub densitometer yog dab tsi?Qhov ceev ntawm lub teeb tsis muaj cov chav ntsuas. Lub densitometer ntsuas qhov ntau ntawm lub teeb uas cuam tshuam lossis kis los ntawm qhov chaw luam tawm. Lub qhov muag photoelectric txuas nrog lub densitometer tuaj yeem hloov feem pua ntawm lub teeb uas cuam tshuam lossis kis mus rau hauv qhov ceev.
11. Muaj tej yam dab tsi cuam tshuam rau qhov ceev?Hauv kev luam ntawv, cov hloov pauv uas cuam tshuam rau qhov ceev ntawm cov nqi yog feem ntau yog cov tuab ntawm zaj duab xis, xim, qhov loj thiab tus lej ntawm cov xim, thiab xim ntawm lub substrate. Qhov ceev ntawm cov khoom siv kho qhov muag feem ntau yog txiav txim siab los ntawm qhov opacity thiab tuab ntawm zaj duab xis, uas cuam tshuam los ntawm qhov loj thiab tus lej ntawm cov xim thiab lawv cov khoom nqus teeb thiab cov khoom tawg.
12. Dyne theem yog dab tsi?Dyne/cm yog ib chav ntsuas siv los ntsuas qhov nro ntawm qhov chaw. Qhov kev nro no yog tshwm sim los ntawm kev sib txuas ntawm cov kua dej (qhov nro ntawm qhov chaw) lossis cov khoom khov (lub zog ntawm qhov chaw). Rau cov hom phiaj ua haujlwm, peb feem ntau hu qhov parameter no dyne level. Qhov dyne level lossis lub zog ntawm qhov chaw ntawm ib qho substrate tshwj xeeb sawv cev rau nws qhov kev ntub dej thiab kev nplaum ntawm cov kua mem. Lub zog ntawm qhov chaw yog ib yam khoom ntawm ib yam khoom. Ntau cov yeeb yaj kiab thiab cov substrates siv hauv kev luam ntawv muaj cov qib luam ntawv qis, xws li 31 dyne/cm polyethylene thiab 29 dyne/cm polypropylene, thiab yog li ntawd xav tau kev kho tshwj xeeb. Kev kho kom zoo tuaj yeem ua rau cov qib dyne ntawm qee cov substrates nce ntxiv, tab sis tsuas yog ib ntus xwb. Thaum koj npaj txhij luam ntawv, muaj lwm yam uas cuam tshuam rau cov qib dyne ntawm cov substrate, xws li: lub sijhawm thiab tus lej ntawm kev kho mob, cov xwm txheej khaws cia, cov av noo ib puag ncig thiab cov hmoov av. Vim tias cov qib dyne tuaj yeem hloov pauv raws sijhawm, feem ntau cov tshuab luam ntawv xav tias nws yog qhov tsim nyog los kho lossis rov kho cov yeeb yaj kiab no ua ntej luam ntawv.
13. Kev kho hluav taws kub ua li cas?Cov yas yog cov uas tsis muaj qhov ntxeem tau thiab muaj qhov chaw inert (lub zog ntawm qhov chaw qis). Kev kho nplaim taws yog ib txoj kev kho cov yas ua ntej kom nce qib dyne ntawm qhov chaw substrate. Ntxiv rau qhov kev luam ntawv lub raj mis yas, txoj kev no kuj siv dav hauv kev lag luam tsheb thiab kev lag luam ua yeeb yaj kiab. Kev kho nplaim taws tsis yog tsuas yog ua rau lub zog ntawm qhov chaw nce ntxiv xwb, tab sis kuj tshem tawm cov pa phem ntawm qhov chaw. Kev kho nplaim taws muaj ntau yam kev cuam tshuam ntawm lub cev thiab tshuaj lom neeg. Lub cev ntawm kev kho nplaim taws yog tias nplaim taws kub siab hloov lub zog mus rau cov roj thiab cov khoom tsis huv ntawm qhov chaw ntawm lub substrate, ua rau lawv qhuav hauv qab cua sov thiab ua lub luag haujlwm ntxuav; thiab nws cov tshuaj lom neeg yog tias nplaim taws muaj ntau cov ions, uas muaj cov khoom oxidizing muaj zog. Hauv qab qhov kub siab, nws cuam tshuam nrog qhov chaw ntawm cov khoom kho kom tsim ib txheej ntawm cov pab pawg ua haujlwm polar ntawm qhov chaw ntawm cov khoom kho, uas ua rau nws lub zog ntawm qhov chaw nce ntxiv thiab yog li ua rau nws muaj peev xwm nqus cov kua.
14. Kev kho mob corona yog dab tsi?Kev tso tawm Corona yog lwm txoj hauv kev los ua kom cov dyne theem nce. Los ntawm kev siv hluav taws xob siab rau lub tshuab ntaus ntawv, huab cua ib puag ncig tuaj yeem ionized. Thaum lub substrate hla dhau thaj chaw ionized no, cov molecular bonds ntawm qhov chaw ntawm cov khoom yuav tawg. Txoj kev no feem ntau yog siv rau hauv kev luam ntawv rotary ntawm cov ntaub ntawv zaj duab xis nyias.
15. Cov tshuaj plasticizer cuam tshuam li cas rau qhov lo ntawm cov kua mem rau ntawm PVC?Plasticizer yog ib yam tshuaj uas ua rau cov ntawv luam tawm mos dua thiab yoog tau dua. Nws yog siv dav hauv PVC (polyvinyl chloride). Hom thiab qhov ntau ntawm plasticizer ntxiv rau PVC yoog tau lossis lwm yam yas feem ntau nyob ntawm tib neeg xav tau rau cov khoom siv kho tshuab, cua sov thiab hluav taws xob ntawm cov ntawv luam tawm. Plasticizers muaj peev xwm mus rau qhov chaw ntawm lub substrate thiab cuam tshuam rau kev nplaum number case. Plasticizers uas nyob ntawm qhov chaw ntawm lub substrate yog cov khoom tsis huv uas txo qhov zog ntawm lub substrate. Qhov ntau ntawm cov khoom tsis huv ntawm qhov chaw, qhov qis dua qhov zog ntawm qhov chaw thiab qhov tsawg dua qhov nplaum nws yuav tsum tau rau number case. Txhawm rau kom tsis txhob muaj qhov no, ib tus tuaj yeem ntxuav cov substrates nrog cov tshuaj ntxuav me me ua ntej luam ntawv kom txhim kho lawv cov ntawv luam tawm.
16. Kuv xav tau pes tsawg lub teeb rau kev kho kom sov?Txawm hais tias lub tshuab number case thiab hom substrate sib txawv, feem ntau, ib lub tshuab kho teeb ci txaus. Tau kawg, yog tias koj muaj nyiaj txaus, koj tuaj yeem xaiv lub tshuab kho teeb ci ob lub teeb kom ua kom qhov ceev kho sai dua. Qhov laj thawj vim li cas ob lub teeb kho zoo dua li ib lub yog tias lub tshuab dual-teeb tuaj yeem muab lub zog ntau dua rau lub substrate ntawm tib lub sijhawm ceev thiab cov chaw teeb tsa. Ib qho ntawm cov teeb meem tseem ceeb uas peb yuav tsum xav txog yog seb lub tshuab kho puas tuaj yeem ziab cov number case luam tawm ntawm qhov ceev ib txwm.
17. Qhov viscosity ntawm cov kua mem cuam tshuam li cas rau kev luam ntawv?Feem ntau cov kua mem yog thixotropic, uas txhais tau tias lawv cov viscosity hloov pauv nrog shear, lub sijhawm thiab kub. Tsis tas li ntawd, qhov siab dua qhov shear rate, qhov qis dua qhov viscosity ntawm cov kua mem; qhov siab dua qhov kub ambient, qhov qis dua qhov viscosity txhua xyoo ntawm cov kua mem. Cov kua mem luam ntawv feem ntau ua tiav cov txiaj ntsig zoo ntawm lub tshuab luam ntawv, tab sis qee zaum yuav muaj teeb meem nrog kev luam ntawv nyob ntawm qhov chaw teeb tsa ntawm lub tshuab luam ntawv thiab kev hloov kho ua ntej nias. Qhov viscosity ntawm cov kua mem ntawm lub tshuab luam ntawv kuj txawv ntawm nws cov viscosity hauv lub thawv ntim kua mem. Cov chaw tsim cov kua mem teeb tsa qhov ntau yam viscosity tshwj xeeb rau lawv cov khoom. Rau cov kua mem uas nyias dhau lossis muaj viscosity qis dhau, cov neeg siv kuj tuaj yeem ntxiv cov thickeners kom raug; rau cov kua mem uas tuab dhau lossis muaj viscosity siab dhau, cov neeg siv kuj tuaj yeem ntxiv cov diluents. Tsis tas li ntawd, koj tuaj yeem tiv tauj tus neeg muag kua mem kom paub cov ntaub ntawv khoom.
18. Muaj tej yam dab tsi cuam tshuam rau qhov ruaj khov lossis lub neej txee ntawm UV inks?Ib qho tseem ceeb uas cuam tshuam rau kev ruaj khov ntawm cov kua mem yog qhov khaws cia ntawm cov kua mem. Cov kua mem UV feem ntau khaws cia rau hauv cov yas cartridges es tsis yog cov hlau cartridges vim tias cov thawv yas muaj qee qib ntawm cov pa oxygen permeability, uas tuaj yeem ua kom ntseeg tau tias muaj qee qhov sib txawv ntawm huab cua ntawm qhov chaw ntawm cov kua mem thiab lub hau thawv. Qhov sib txawv huab cua no - tshwj xeeb tshaj yog cov pa oxygen hauv huab cua - pab txo qis kev sib txuas ua ntej ntawm cov kua mem. Ntxiv nrog rau kev ntim khoom, qhov kub ntawm lub thawv kua mem kuj tseem ceeb rau kev tswj hwm lawv qhov ruaj khov. Qhov kub siab tuaj yeem ua rau muaj kev tsis haum ua ntej thiab kev sib txuas ua ntej ntawm cov kua mem. Kev hloov kho rau cov qauv kua mem thawj kuj tseem yuav cuam tshuam rau kev ruaj khov ntawm cov kua mem. Cov khoom ntxiv, tshwj xeeb tshaj yog cov catalysts thiab photoinitiators, tuaj yeem ua rau lub neej txee ntawm cov kua mem luv dua.
19. Qhov txawv ntawm kev sau ntawv hauv pwm (IML) thiab kev kho kom zoo nkauj hauv pwm (IMD) yog dab tsi?Kev sau npe hauv pwm thiab kev kho kom zoo nkauj hauv pwm yeej txhais tau tib yam, uas yog, daim ntawv lo lossis zaj duab xis kho kom zoo nkauj (ua ntej lossis tsis ua) raug muab tso rau hauv pwm thiab cov yas yaj txhawb nqa nws thaum lub sijhawm ua qhov khoom. Cov ntawv lo siv hauv qhov qub yog tsim los ntawm kev siv cov thev naus laus zis luam ntawv sib txawv, xws li gravure, offset, flexographic lossis screen printing. Cov ntawv lo no feem ntau tsuas yog luam tawm rau saum npoo ntawm cov khoom, thaum sab tsis luam tawm txuas nrog 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 rau saum npoo thib ob ntawm zaj duab xis pob tshab. Kev kho kom zoo nkauj hauv pwm feem ntau yog luam tawm siv lub tshuab luam ntawv vijtsam, thiab cov yeeb yaj kiab thiab UV inks siv yuav tsum sib xws nrog pwm txhaj tshuaj.
20. Yuav ua li cas yog tias siv lub tshuab tua kab mob nitrogen los kho cov xim UV?Cov txheej txheem kho uas siv nitrogen los kho cov khoom luam tawm tau muaj ntau tshaj kaum xyoo. Cov txheej txheem no feem ntau yog siv rau hauv cov txheej txheem kho ntawm cov ntaub thiab cov hloov pauv membrane. Nitrogen siv hloov oxygen vim tias oxygen tiv thaiv kev kho ntawm cov kua membrane. Txawm li cas los xij, vim tias lub teeb los ntawm lub teeb hauv cov txheej txheem no muaj tsawg heev, lawv tsis zoo heev rau kev kho cov xim lossis cov kua membrane xim.
Lub sijhawm tshaj tawm: Lub Kaum Hli-24-2024
