Choyamba, zophimba zamadzi (zochokera m'madzi) ndi UV zagwiritsidwa ntchito kwambiri mu Graphics Arts Industry ngati zophimba zapamwamba zopikisana. Zonsezi zimapereka kukongola ndi chitetezo, zomwe zimawonjezera phindu ku zinthu zosiyanasiyana zosindikizidwa.
Kusiyana kwa Njira Zochiritsira
Kwenikweni, njira zoumitsira kapena kuziziritsira zinthu ziwirizi zimasiyana. Zophimba zamadzi zimauma pamene zinthu zophimba zosasunthika (mpaka 60% ya madzi) zimakakamizidwa kuphwanyika kapena pang'ono zimalowa mu gawo lokhala ndi mabowo. Izi zimathandiza kuti zinthu zolimba za zophimbazo zigwirizane kuti zipange filimu yopyapyala, youma ikakhudza.
Kusiyana kwake ndi kwakuti ma UV coverage amapangidwa pogwiritsa ntchito zigawo zamadzimadzi zolimba 100% (zopanda volatilizers) zomwe zimachiritsa kapena kupopera mu photochemical cross-linking reaction yopanda mphamvu zambiri ikakumana ndi kuwala kwa ultraviolet (UV) kwa nthawi yochepa. Njira yophikira imayambitsa kusintha kwachangu, kusandutsa madzi kukhala olimba nthawi yomweyo (cross-linking) kupanga filimu youma yolimba.
Kusiyana kwa Zida Zogwiritsira Ntchito
Ponena za zida zogwiritsira ntchito, zophimba zamadzi ndi UV zomwe zimakhala zochepa kwambiri zitha kugwiritsidwa ntchito bwino pogwiritsa ntchito njira zosindikizira za inki yamadzimadzi ya flexo & gravure. Mosiyana ndi zimenezi, njira zosindikizira inki ya offset litho paste pa intaneti komanso pa sheet-fed zimafuna kuti chophimba cha press-end chiwonjezedwe kuti chigwiritsidwe ntchito pa zophimba zamadzimadzi kapena UV zomwe zimakhala zochepa kwambiri. Njira zowonetsera zimagwiritsidwanso ntchito pa zophimba za UV.
Makina osindikizira a Flexo ndi gravure ali ndi mphamvu yowumitsa ya inki yosungunuka ndi yamadzi yomwe yayikidwa kale kuti iume bwino. Njira zosindikizira za Web offset heat set zawonetsedwanso kuti zili ndi mphamvu yowumitsa yofunikira kuti iume bwino. Komabe, ndi nkhani ina poganizira njira yosindikizira ya offset litho. Pano kugwiritsa ntchito zida zowumitsa zamadzi kumafuna kuyika zida zapadera zowumitsa zomwe zimaphatikizapo ma emitter a infrared, mipeni ya mpweya wotentha, ndi zida zochotsera mpweya.
Kusiyana kwa Nthawi Youma
Kutumiza kwa nthawi yayitali kumalimbikitsidwanso kuti kupereke nthawi yowonjezera yowumitsa. Poganizira zowumitsa (kuchiritsa) kwa zokutira za UV kapena inki, kusiyana kuli mu mtundu wa zida zapadera zowumitsa (kuchiritsa) zomwe zimafunikira. Makina oyeretsera UV amapereka makamaka kuwala kwa UV komwe kumaperekedwa ndi nyali zapakati za mercury arc, kapena magwero a LED okhala ndi mphamvu zokwanira zochiritsa bwino pa liwiro lofunikira.
Zophimba zamadzi zimauma mwachangu ndipo chisamaliro chiyenera kuperekedwa pakuyeretsa nthawi iliyonse yotseka makina. Kusiyana kwake ndikuti zophimba za UV zimakhala zotseguka zikasindikizidwa bola ngati palibe kuwala kwa UV. Ma inki a UV, zophimba, ndi ma varnish siziuma kapena kuzimitsa maselo a anilox. Palibe chifukwa choyeretsa pakati pa kusindikiza kapena kumapeto kwa sabata, zomwe zimachepetsa nthawi yopuma komanso kuwononga zinthu.
Zophimba zonse zamadzi ndi za UV zimatha kupereka mawonekedwe owonekera bwino, komanso mitundu yosiyanasiyana kuyambira pa kunyezimira kwambiri, mpaka satin mpaka matte. Kusiyana kwake ndikuti zophimba za UV zimatha kupereka mawonekedwe onyezimira kwambiri komanso akuya kwambiri.
Kusiyana kwa Zophimba
Zophimba zamadzi nthawi zambiri zimakhala ndi mphamvu yabwino yokanikiza, kuuma, ndi kutsekeka. Zophimba zamadzi zopangidwa mwapadera zimathanso kupereka mphamvu yolimbana ndi mafuta, mowa, alkali, ndi chinyezi. Kusiyana kwake ndikuti zophimba za UV nthawi zambiri zimapita patsogolo kwambiri zomwe zimapereka mphamvu yabwino kwambiri yokanikiza, kuuma, kutsekeka, mankhwala, ndi zinthu zina.
Zophimba zamadzi za thermoplastic za sheet-feed offset litho zinapangidwa kuti zikhale zonyowa pamzere pamwamba pa inki zouma pang'onopang'ono, kuchepetsa kapena kuthetsa kufunikira kwa ufa wopopera womwe umagwiritsidwa ntchito poletsa inki kuzizira. Kutentha kwa mulu kuyenera kusungidwa pamlingo wa 85-95®F kuti zisafewetse zophimba zouma kutentha kwambiri, komanso kuthekera kotseka ndi kutseka. Mwabwino, kupanga bwino kumawonjezeka chifukwa mapepala ophimbidwa amatha kukonzedwanso mwachangu.
Kusiyana kwake ndi kwakuti ma UV clothing omwe amagwiritsidwa ntchito pamzere wonyowa pa ma UV inks onse amatsukidwa pokanikiza, ndipo mapepala amatha kukonzedwanso nthawi yomweyo. Pamene ma UV clothing pamwamba pa ma litho inks achikhalidwe akuonedwa kuti ndi amadzimadzi, ma primer amalimbikitsidwa kuti amamatire ndi inki kuti apange maziko a ma UV clothing. Ma UV/ma inki wamba angagwiritsidwe ntchito kuti achepetse kufunikira kwa primer.
Mphamvu pa Anthu, Chakudya, ndi Chilengedwe
Zophimba zamadzi zimapereka mpweya woyera, VOC yochepa, mowa wochepa, fungo lochepa, siliyaka, silipha poizoni, komanso siliipitsa. Mofananamo, zophimba za UV zolimba 100% sizipanga mpweya wosungunuka, VOC palibe, ndipo siziyaka. Kusiyana kwake ndi kwakuti zophimba za UV zosanyowa zili ndi zinthu zomwe zimatha kukhala ndi fungo lamphamvu, ndipo zimatha kuyambira pang'ono mpaka zazikulu ngati zokwiyitsa, zomwe zingayambitse ziwengo mwa anthu ena. Kukhudzana ndi khungu ndi maso kuyenera kupewedwa. Mwachiyembekezo, zochiritsa za UV zimatchedwa "Best Available Control Technology" (BACT) ndi EPA, kuchepetsa ma VOC, mpweya wa CO2, ndi mphamvu zofunikira.
Zophimba zamadzi zimatha kusintha kusinthasintha panthawi yonse yosindikizira chifukwa cha kuuma kwa mpweya woipa, komanso mphamvu ya Ph. Kusiyana kwake ndi 100% ya zinthu zolimba zomwe UV imasunga kusinthasintha pakusindikiza bola ngati palibe kuwala kwa UV.
Zophimba zamadzi zouma zimatha kubwezeretsedwanso, kuwonongeka ndi kubwezeretsedwanso. Kusiyana kwake ndi kwakuti ngakhale zophimba za UV zotsukidwa zimatha kubwezeretsedwanso ndi kubwezeretsedwanso, zimachedwa kuwonongeka. Izi zili choncho chifukwa zigawo za zophimba za cleaving cross-links,
kupanga zinthu zolimba komanso zolimbana ndi mankhwala.
Zophimba zamadzi zimauma ndi madzi oyera bwino popanda chikasu chokhudzana ndi ukalamba. Kusiyana kwake ndi kwakuti zophimba za UV zotsukidwa zimatha kuwonetsanso kuwala kwambiri, koma muyenera kusamala popanga chifukwa zinthu zina zopangira zimatha kupanga chikasu.
Zophimba zamadzi zimatha kutsatira malamulo a FDA okhudza chakudya chouma komanso/kapena chonyowa ndi mafuta. Kusiyana kwake ndikuti zophimba za UV, kupatulapo mitundu yochepa kwambiri, sizingathe kutsatira malamulo a FDA okhudza chakudya chouma kapena chonyowa/chonyowa mwachindunji.
Ubwino
Kupatula kusiyana, zokutira zamadzi ndi UV zimagawana zabwino zambiri pamlingo wosiyanasiyana. Mwachitsanzo, mapangidwe enaake amatha kupereka kukana kutentha, mafuta, mowa, alkali, ndi chinyezi. Kuphatikiza apo, amatha kupereka kukana kwa glue kapena guluu, COF yosiyanasiyana, kuthekera kosindikiza, kuvomereza kutentha kapena kuzizira kwa zojambulazo, kuthekera koteteza inki zachitsulo, kuchulukitsa kupanga, kukonza mkati mwa mzere, kuthekera kogwira ntchito ndi kutembenuka, kusunga mphamvu, kusayambitsa, komanso kuchotsera ufa wothira.
Bizinesi yathu ku Cork Industries ndi kupanga ndi kupanga zomatira zapadera za Aqueous, energy-curing Ultraviolet (UV), ndi Electron Beam (EB). Cork imakula bwino chifukwa cha luso lake lopanga zinthu zatsopano komanso zothandiza zomwe zimapatsa mwayi wopikisana ndi makampani opanga zojambula.
Nthawi yotumizira: Mar-21-2025
