1. Chii chinoitika kana ingi yanyanya kupora?Pane dzidziso yekuti kana iyo inki inoratidzwa kune yakawandisa ultraviolet chiedza, inova yakaoma uye yakaoma. Kana vanhu vakadhinda imwe ingi pairi firimu reinki yakaomeswa voiomesa kechipiri, kunamira pakati pematanho einki ekumusoro neazasi kunova kwakashata zvikuru.
Imwe dzidziso ndeyokuti kunyanya-kurapa kunokonzeresa foto-oxidation pane inki pamusoro. Photo-oxidation ichaparadza zvisungo zvemakemikari pamusoro pemufirimu weinki. Kana ma molecular zvisungo pamusoro peingi firimu akashatiswa kana kukuvara, adhesion pakati payo uye imwe ingi layer ichaderedzwa. Mafirimu einki akaporeswa haangoite zvishoma chete, asi zvakare anokonzeresa kune ebrittlement.
2. Sei mamwe maingi eUV achirapa nekukurumidza kupfuura mamwe?Ingi dzeUV dzinowanzo kugadzirwa zvinoenderana nehunhu hwemamwe ma substrates uye zvakakosha zvemamwe maapplication. Kubva pane chemakemikari maonero, iyo inokurumidza kurapa inki, zvakanyanya kushanduka kwayo mushure mekurapa. Sezvaunogona kufungidzira, kana ingi yarapwa, mamorekuru einki anozosangana ne-cross-linking reactions. Kana mamorekuru aya akaumba nhamba huru yemaketani emamorekuru ane matavi akawanda, iyo ingi inorapa nekukurumidza asi haizonyatso kuchinjika; kana mamorekuru aya akaumba nhamba diki yecheni dzemamorekuru pasina matavi, ingi inogona kurapa zvishoma nezvishoma asi ichanyatso kuchinjika. Ingi zhinji dzakagadzirwa zvichienderana nezvinodiwa zvekushandisa. Semuenzaniso, kune ingi dzakagadzirirwa kugadzirwa kwe membrane switch, firimu reinki rakaporeswa rinofanirwa kuenderana neanonamira akaumbwa uye kuve anochinjika zvakakwana kuti aenderane neanotevera kugadzirisa sekunge kufa-kucheka uye embossing.
Zvakakosha kucherechedza kuti kemikari yakasvibirira inoshandiswa muinki haigoni kuita nepamusoro pe substrate, kana zvisina kudaro inokonzera kuputika, kuputsa kana delamination. Ingi dzakadaro dzinowanzorapa zvishoma nezvishoma. Ingi dzakagadzirirwa kugadzirwa kwemakadhi kana mapuranga epurasitiki akaomarara haadi kuchinjika kwakadaro uye kuoma nekukurumidza zvichienderana nezvinodiwa zvekushandisa. Kunyangwe ingi ichioma nekukurumidza kana zvishoma nezvishoma, tinofanira kutanga kubva pakushandisa kwekupedzisira. Imwe nyaya inofanirwa kucherechedzwa ndeye kurapa midziyo. Dzimwe ingi dzinogona kurapa nekukasira, asi nekuda kwekushomeka kwemushonga wekurapa, kukurumidza kurapa kweinki kunogona kudzikiswa kana kusapora.
3. Sei firimu repolycarbonate (PC) richiita yero pandinoshandisa UV inki?Polycarbonate inonzwa nemwaranzi yeultraviolet ine wavelength isingasviki 320 nanometers. Iyo yero yefirimu pamusoro inokonzerwa nekutsemuka kweiyo molecular chain kunokonzerwa ne photooxidation. Iwo epurasitiki mamorekuru mabhondi anotora ultraviolet chiedza simba uye anogadzira emahara radicals. Aya mahara radicals anoita neokisijeni mumhepo uye anoshandura chitarisiko uye zvemuviri zvepurasitiki.
4. Nzira yekudzivirira kana kubvisa yellowing yepolycarbonate pamusoro?Kana UV inki inoshandiswa kudhinda pa polycarbonate firimu, iyo yero yepasi yayo inogona kuderedzwa, asi haigone kubviswa zvachose. Kushandiswa kwekuporesa mababu nesimbi yakawedzerwa kana gallium kunogona kuderedza kuitika kweyero iyi. Aya ma bulbs anozodzikisa kubuda kweapfupi-wavelength ultraviolet mwaranzi kudzivirira kukuvadzwa kwepolycarbonate. Pamusoro pezvo, kunyatsorapa inki yega yega ruvara kunobatsirawo kuderedza kuratidzwa kweiyo substrate kune ultraviolet mwenje uye kuderedza mukana wekushanduka kwepolycarbonate firimu.
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Watts per inch ndiyo simba rekugadzirisa mwenje wekuporesa, iyo inotorwa kubva kuOhm's law volts (voltage) x amps (ikozvino) = watts (simba); nepo watts per square centimita kana milliwatts per square centimeter inomiririra peak illuminance (UV simba) pachikamu nharaunda apo radiometer inopfuura pasi pechirambi chekuporesa. Peak kupenya kunoenderana zvakanyanya nesimba remwenje unorapa. Chikonzero nei isu tichishandisa watts kuyera peak mwenje inyaya yekuti inomiririra simba remagetsi rinoshandiswa nerambi rekuporesa. Pamusoro pehuwandu hwemagetsi anogamuchirwa neiyo inoporesa unit, zvimwe zvinhu zvinokanganisa kupenya kwepamusoro zvinosanganisira mamiriro uye geometry yeanoratidzira, zera remwenje unorapa, uye chinhambwe pakati pemwenje wekurapa nenzvimbo yekurapa.
6. Ndeupi musiyano uripo pakati pemamilijoule nemamilliwatts?Simba rose rinovhenekerwa kune imwe nzvimbo pamusoro peimwe nguva yenguva rinowanzoratidzwa mujoules per flat centimeter kana millijoules per square centimeter. Iyo inonyanya kuenderana nekumhanya kwebhandi rekutakura, simba, nhamba, zera, chimiro chemarambi ekurapa, uye chimiro uye mamiriro ezviratidziro muhurongwa hwekurapa. Simba resimba reUV kana simba remwaranzi rinovhenekerwa kune imwe nzvimbo rinonyanya kuratidzwa mumawatts/square centimita kana milliwatts/square centimita. Iyo yakakwira iyo UV simba rinovhenekerwa kumusoro kweiyo substrate, iyo yakawanda simba rinopinda muingi firimu. Kunyangwe iri milliwatts kana millijoules, inogona kuyerwa chete kana wavelength senitivity yeradiometer inosangana nezvimwe zvinodiwa.
7. Tinova nechokwadi sei kuti ingi yeUV yapora?Kuporeswa kwefirimu yeinki kana ichipfuura nepakati pekurapa kwekutanga kunokosha zvikuru. Kurapa kwakakodzera kunogona kuderedza deformation ye substrate, kunyanya-kurapa, kunyorova zvakare uye pasi-kupora, uye optimize kunamatira pakati peinki nekuseka kana pakati pemachira. Screen kudhinda zvidyarwa zvinofanirwa kuona magadzirirwo ekugadzira isati yatanga kugadzirwa. Kuti uedze kugona kurapa kweingi yeUV, tinogona kutanga kudhinda nekumhanya kwakaderera kunobvumidzwa ne substrate uye kurapa masampuli akadhindwa. Zvadaro, isa simba remwenje wekuporesa kune kukosha kunotsanangurwa nemugadziri weinki. Paunenge uchibata nemavara asiri nyore kurapa, akadai sematema uye machena, isu tinogonawo kuwedzera zvakakodzera maparamita emwenje werambi. Mushure mekunge pepa rakadhindwa ratonhora, tinogona kushandisa bidirectional mumvuri nzira yekuona kunamatira kweingi firimu. Kana muenzaniso unogona kupasa bvunzo zvakanaka, pepa conveyor kumhanya inogona kuwedzera ne 10 tsoka paminiti, uye ipapo kudhinda uye bvunzo zvinogona kuitwa kusvikira ingi firimu anorasikirwa adhesion kuti substrate, uye conveyor bhandi kumhanya uye kuporesa rambi parameters panguva ino zvakanyorwa. Zvadaro, bhandi rekutakura rinogona kuderedzwa ne 20-30% maererano nemaitiro einki hurongwa kana mazano emutengesi weinki.
8. Kana mavara akasapindirana, ndinofanira kuva nehanya nokunyanyisa kupora here?Kunyanya-kurapa kunoitika kana pamusoro peingi firimu inotora yakawandisa UV mwenje. Kana dambudziko iri risina kuwanikwa uye kugadziriswa nenguva, pamusoro peiki firimu ichava yakaoma uye yakaoma. Ehe, chero isu tisingaite color overprinting, hatifanirwe kunetseka zvakanyanya nezvedambudziko iri. Zvisinei, tinofanira kufunga nezvechimwe chinhu chinokosha, iyo firimu kana kuti substrate iri kudhindwa. UV mwenje inogona kukanganisa akawanda substrate nzvimbo uye mamwe mapurasitiki anonzwira UV mwenje weimwe wavelength. Uku kunzwisiswa kune chaiyo wavelengths yakasanganiswa neokisijeni mumhepo inogona kukonzera kuderedzwa kwepasi pepurasitiki. Molecular bond pane substrate surface inogona kutyoka uye kuita kuti kunamatira pakati peingi yeUV uye substrate ikodzere. Iko kushatiswa kweiyo substrate pamusoro pebasa inoitika zvishoma nezvishoma uye yakanangana neiyo UV mwenje simba yainogamuchira.
9. Ingi yeUV ingi yegirini here? Sei?Kuenzaniswa neinki-based inki, ingi dzeUV dzine hushamwari hwakatipoteredza. UV-inorapika ingi inogona kuva 100% yakasimba, izvo zvinoreva kuti zvese zvinoumba ingi zvichava yekupedzisira ingi firimu.
Ingi dzakanyungudika, kune rumwe rutivi, dzinoburitsa zvinonyungudutsa mumhepo sezvo firimu reinki rinooma. Sezvo zvinonyungudutsa zviri volatile organic compounds, zvinokuvadza kune zvakatipoteredza.
10. Ndeipi chikamu chekuyera che data density inoratidzwa pa densitometer?Optical density haina mayunitsi. Iyo densitometer inoyera huwandu hwechiedza chinoratidzwa kana kufambiswa kubva panzvimbo yakadhindwa. Ziso rephotoelectric rakabatana nedensitometer rinogona kushandura chikamu chechiedza chinotaridzwa kana kupfuudzwa kuita density value.
11. Ndezvipi zvinhu zvinokanganisa kuwanda?Mukudhindwa kwescreen, izvo zvinochinja zvinokanganisa density kukosha zvakanyanya inki firimu ukobvu, ruvara, saizi uye nhamba ye pigment particles, uye ruvara rwe substrate. Optical density inonyanya kutariswa neopacity uye ukobvu hweingi firimu, iyo inozokanganiswa nehukuru uye nhamba ye pigment particles uye kupenya kwavo uye kuparadzira zvinhu.
12. Chii chinonzi dyne level?Dyne/cm chiyereso chinoshandiswa kuyera tension yepasi. Kukakavadzana uku kunokonzerwa nekukwezvwa kwe intermolecular yerimwe mvura (surface tension) kana solid (surface energy). Nezvinangwa zvinoshanda, isu tinowanzo kudaidza iyi parameter dyne level. Iyo dyne level kana pamusoro pesimba reimwe substrate inomiririra kunyorova kwayo uye inki adhesion. Surface energy chinhu chinobatika chechinhu. Mafirimu mazhinji uye ma substrates anoshandiswa mukudhinda ane yakaderera kudhinda mazinga, akadai 31 dyne/cm polyethylene uye 29 dyne/cm polypropylene, uye saka inoda kurapwa kwakakosha. Kurapa kwakakodzera kunogona kuwedzera dyne level yemamwe substrates, asi kwenguva pfupi. Paunenge wakagadzirira kudhinda, pane zvimwe zvinhu zvinokanganisa dyne level ye substrate, zvakadai se: nguva uye nhamba yekurapa, kuchengetedza mamiriro, ambient humidity uye guruva mazinga. Sezvo dyne mazinga achigona kuchinja nekufamba kwenguva, maprinta mazhinji anonzwa zvakakosha kurapa kana kurapa zvakare mafirimu aya asati adhindwa.
13. Kurapa kwemoto kunoitwa sei?Plastics are inherently non-porous and ane inert surface (yakaderera pamusoro pesimba). Kurapa kwemoto inzira yekutangira-kurapa mapurasitiki kuti uwedzere dyne level ye substrate pamusoro. Pamusoro pemunda wekudhinda mabhodhoro epurasitiki, iyi nzira inoshandiswa zvakanyanya mumaindasitiri emotokari uye mafirimu ekugadzira. Kurapa kwemoto hakusi kungowedzera simba repamusoro, asiwo kunobvisa kusvibiswa kwepamusoro.Kurapa kwemoto kunosanganisira mutsara wehutano hwakaoma hwemuviri nemakemikari. Iyo yemuviri nzira yekurapa murazvo ndeyekuti murazvo wepamusoro-tembiricha unoendesa simba kumafuta uye kusvibiswa pamusoro peiyo substrate, zvichiita kuti vabude pasi pekupisa uye kuita basa rekuchenesa; uye maitiro ayo emakemikari ndeokuti murazvo une nhamba huru yeion, iyo ine yakasimba oxidizing properties. Pasi pekushisa kwepamusoro, inopindirana nepamusoro pechinhu chakabatwa kuti iite mutsara wepolar inoshanda mapoka pamusoro pechinhu chakarapwa, iyo inowedzera simba rayo repamusoro uye nokudaro inowedzera kukwanisa kwayo kutora zvinwiwa.
14. Chii chinonzi corona kurapwa?Corona discharge ndiyo imwe nzira yekuwedzera dyne level. Nekushandisa yakakwira voltage kune media roller, mhepo yakatenderedza inogona kuve ionized. Kana iyo substrate ichipfuura nenzvimbo iyi ine ionized, ma molecular bonds ari pamusoro pezvinhu anoputsika. Iyi nzira inowanzoshandiswa mukutenderera kudhindwa kwezvinhu zvitete zvefirimu.
15. Plasticizer inokanganisa sei kunamatira kweinki paPVC?Plasticizer ikemikari inoita kuti zvakadhindwa zvipfave uye zvive nyore kushanduka. Inoshandiswa zvakanyanya muPVC (polyvinyl chloride). Rudzi uye huwandu hweplasticizer hwakawedzerwa kune inochinjika PVC kana mamwe mapurasitiki anonyanya kuenderana nezvinodiwa nevanhu zvemakanika, kupisa kupisa uye magetsi ezvigadzirwa zvakadhindwa. Plasticizers ane mukana wekutamira kune substrate pamusoro uye anokanganisa inki adhesion. Plasticizers anoramba ari pamusoro pe substrate inosvibisa inoderedza simba repamusoro re substrate. Iyo yakawanda inosvibisa pamusoro pepamusoro, iyo yakaderera pasi pesimba repamusoro uye kushoma kunamatira iyo inozofanira kuita inki. Kuti udzivise izvi, munhu anogona kuchenesa ma substrates ane nyoro yekuchenesa solvent asati adhinda kuti avandudze kudhinda kwavo.
16. Marambi mangani andinofanira kurapa?Kunyangwe iyo inki system uye mhando ye substrate inosiyana, kazhinji, imwe mwenje yekurapa system yakakwana. Ehe, kana uine bhajeti rakaringana, unogona zvakare kusarudza maviri-rambi ekurapa unit kuti uwedzere kukurumidza kurapa. Chikonzero nei marambi maviri ekurapa ari nani pane imwe ndechekuti maviri-mwenje sisitimu inogona kupa simba rakawanda kune substrate pane imwechete conveyor kumhanya uye parameter marongero. Imwe yenyaya dzakakosha dzatinofanira kufunga nezvadzo ndechekuti inorapa unit inogona kuomesa inki yakadhindwa nekukurumidza.
17. Ko viscosity yeinki inokanganisa sei kudhinda?Ingi dzakawanda ndeye thixotropic, zvinoreva kuti viscosity yavo inoshanduka neshear, nguva uye tembiricha. Mukuwedzera, iyo yakakwirira yeshear rate, yakaderera viscosity yeinki; iyo yakakwirira ye ambient tembiricha, inodzika iyo gore negore viscosity yeinki. Maingi ekudhinda skrini anowanzo kuwana mibairo yakanaka pamuchina wekudhinda, asi pano neapo pachange paine matambudziko nekudhinda zvichienderana nemasetirwo emuchina wekutsikisa uye pre-press gadziriso. Iyo viscosity yeinki pamuchina wekudhinda wakasiyanawo kubva kune viscosity yayo mune ingi katuriji. Vagadziri veinki vanoisa chaiyo viscosity siyana yezvigadzirwa zvavo. Kune ingi dzakatetepa kana dzine viscosity yakaderera, vashandisi vanogonawo kuwedzera makobvu nemazvo; kune ingi dzakanyanya kukora kana dzine viscosity yakawandisa, vashandisi vanogonawo kuwedzera diluent. Mukuwedzera, iwe unogona zvakare kubata inki mutengesi kune ruzivo rwechigadzirwa.
18. Ndezvipi zvinhu zvinokanganisa kugadzikana kana pasherufu yehupenyu hwemaingi eUV?Chinhu chakakosha chinokanganisa kugadzikana kweinki ndiko kuchengetedza inki. Ingi dzeUV dzinowanzochengetwa mumakaturiji einki epurasitiki kwete masimbi eingi katuriji nekuti midziyo yepurasitiki ine imwe dhigirii yeokisijeni permeability, iyo inogona kuve nechokwadi chekuti pane imwe mhepo mukaha pakati peingi pamusoro uye chivharo chemudziyo. Uyu mukaha wemhepo - kunyanya mweya weokisijeni mumhepo - unobatsira kuderedza nguva isati yakwana yekubatanidza inki. Pamusoro pekurongedza, tembiricha yeinki mudziyo yakakoshawo kuchengetedza kugadzikana kwavo. Tembiricha yepamusoro inogona kukonzera kuita nguva isati yakwana uye kuyambuka-kubatanidza ingi. Kugadziridza kune yekutanga inki kuumbwa kunogona kukanganisawo kugadzikana kwesherufu yeinki. Zviwedzere, kunyanya zvinokonzeresa uye mafotoinitiators, zvinogona kupfupisa hupenyu hwesherufu yeinki.
19. Ndeupi musiyano uripo pakati pe-in-mold labeling (IML) uye in-mold decoration (IMD)?In-mold labeling uye in-mold kushongedzwa kunoreva chinhu chimwe chete, ndiko kuti, chinyorwa kana firimu rekushongedza (rakagadzirwa kana kwete) rinoiswa muforoma uye purasitiki yakanyungudutswa inoitsigira ichiumbwa chikamu. Iwo mavara anoshandiswa mune yekare anogadzirwa uchishandisa akasiyana matekinoroji, senge gravure, offset, flexographic kana screen printing. Aya mavara anowanzo kudhindwa chete pamusoro pepamusoro pezvinhu, nepo iyo isina kudhindwa rutivi rwakabatana nejekiseni mold. In-mold kushongedzwa kunonyanya kushandiswa kugadzira zvikamu zvinogara uye kazhinji kudhindwa pachikamu chechipiri chefirimu rakajeka. In-mold kushongedzwa kunowanzo kudhindwa uchishandisa screen printer, uye mafirimu uye UV ingi dzinoshandiswa dzinofanira kuenderana nejekiseni mold.
20. Chii chinoitika kana nitrogen yekurapa unit ikashandiswa kurapa ingi dzeUV dzine mavara?Kurapa masisitimu anoshandisa nitrogen kurapa zvigadzirwa zvakadhindwa zvave zviripo kwemakore anopfuura gumi. Aya masisitimu anonyanya kushandiswa mukurapa machira uye membrane switch. Nitrogen inoshandiswa pachinzvimbo cheokisijeni nekuti oxygen inotadzisa kurapwa kweingi. Zvisinei, sezvo chiedza chinobva kuma bulbs mumasisitimu aya chakanyanya kushomeka, haanyanyi kushanda mukurapa pigments kana ingi dzemavara.
Nguva yekutumira: Oct-24-2024
