Amalebula efilimu anciphisa ukushisaamalebula efilimu azacile aphrintwe kumafilimu epulasitiki noma amashubhu kusetshenziswa uyinki okhethekile.Ngesikhathi senqubo yokulebula, lapho kushisa (cishe ku-70 ℃), ilebula yokushwabana ishwabana ngokushesha eduze komugqa wangaphandle wesiqukathi futhi ibambelele ngokuqinile ebusweni besiqukathi.Amalebula efilimu anciphisa ukushisa ikakhulukazi ahlanganisa amalebula emikhono eshwabene namalebula okugoqa ashwabene.
Izici zomsebenzi
Ilebula yomkhono we-shrinkage ilebula eyicylindrical eyenziwe ngefilimu yokunciphisa ukushisa njenge-substrate, ephrintiwe bese yenziwa.Inesici sokusebenzisa kalula futhi ifaneleka kakhulu iziqukathi ezimise okukhethekile.Amalebula wemikhono efinyeziwe ngokuvamile adinga okokusebenza okukhethekile okulebula ukumboza ilebula ephrintiwe esitsheni.Okokuqala, idivayisi yokulebula ivula ilebula yemikhono eyi-cylindrical evaliwe, okungenzeka ukuthi ngezinye izikhathi idinga ukubhola;Okulandelayo, sika ilebula ngosayizi abafanele bese uyibeka esitsheni;Bese usebenzisa iziteshi zesitimu, i-infrared, noma umoya oshisayo wokwelapha ukushisa ukuze unamathisele ngokuqinile ilebula ebusweni besiqukathi.
Ngenxa yokucaca okuphezulu kwefilimu ngokwayo, ilebula inombala ogqamile futhi ocwebezelayo.Kodwa-ke, ngenxa yesidingo sokuncipha ngesikhathi sokusetshenziswa, kune-drawback ye-deformation yephethini, ikakhulukazi emikhiqizweni ephrintiwe ngezimpawu zebhakhodi.Idizayini eqinile kanye nokulawulwa kwekhwalithi yokuphrinta kufanele kwenziwe, ngaphandle kwalokho ukuguqulwa kwephethini kuzobangela ikhwalithi yebhakhodi ukuthi ingafaneleki.Amalebula okugoqa ancipha angalebula kusetshenziswa okokusebenza kokulebula okungokwesiko, okudinga ukusetshenziswa kwezinamatheliso namazinga okushisa aphezulu phakathi nenqubo yokulebula.Phakathi nenqubo yokuncipha, i-adhesive encibilikayo eshisayo ikhethwa ngenxa yokucindezeleka okukhiqizwa ukunamathela ezingxenyeni ezigqagqene zefilimu.
Ukukhiqizwa kwangaphambili
Ngenxa yokuthiukushisa shwabanisa ifilimuifilimu ye-thermoplastic eqondiswe ngokunwebeka ngesikhathi sokukhiqiza futhi incipha ngesikhathi sokusetshenziswa.Ngakho-ke, kungakhathaliseki ukuthi iyiphi indlela yokunyathelisa esetshenziselwa ukuphrinta, ngaphambi kokuklama iphethini engaphezulu, izinga lokuncipha elivundlile neliqondile lezinto ezibonakalayo, kanye namaphutha okuguqulwa avumelekile ezindaweni ezihlukahlukene zehluzo zokuhlobisa nombhalo ngemva kokuncipha, kufanele kucatshangelwe. ukuze kuqinisekiswe ukubuyiselwa okunembile kwephethini, umbhalo, kanye nebhakhodi eshwabene esitsheni.
Isiqondiso sephethini
Noma ngabeukushisa shwabanisa ifilimuiphrintwa kusetshenziswa ukuphrinta kwe-gravure noma ukuphrinta kwe-flexographic, ukunyathelisa kwayo ikakhulukazi endleleni yokunyathelisa yangaphakathi, futhi isiqondiso esihlobene nephethini epuleti lokuphrinta kufanele sibe sihle.Namuhla, kukhona futhi amafilimu anciphayo ukuze aphrinte phezulu.Kulesi simo, isiqondiso sephethini epuleti lokuphrinta kufanele siguqulwe.
Ukulandelana kwamaphethini
Ngenxa yokulinganiselwa kokuphrinta kwe-flexographic, uma ifilimu ye-shrink iphrintiwe kusetshenziswa ukuphrinta kwe-flexographic, izinga lesithombe akufanele libe bucayi kakhulu, kuyilapho ukusebenzisa ukuphrinta kwe-gravure kungadinga izinga elicebile lesithombe.
Idizayini yobukhulu
Izinga lokushwabana eliphambanayo lefilimu eshwabene ukushisa esetshenziselwa ukuphrinta lingu-50% ukuya ku-52% no-60% kuya ku-62%, futhi lingafinyelela ku-90% ngaphansi kwezimo ezikhethekile.Izinga lokuncipha kwe-longitudinal liyadingeka ukuthi libe ngu-6% kuya ku-8%.Kodwa-ke, ngesikhathi sokufinyela ngokushesha kwefilimu, ngenxa yemikhawulo yesiqukathi, izikhombisi-ndlela ezivundlile neziqondile azikwazi ukuvunyelwa ngokugcwele.Ukuqinisekisa ukubuyiselwa okunembile kwephethini enenkontileka, umbhalo, nebhakhodi, kuyadingeka ukucabangela ukuma kwesiqukathi futhi ubale usayizi olungile nezinga lokuguquguquka ngokusekelwe esimweni sangempela.Kumalebula okunciphisa ukushisa adinga ukuguqula amafilimu afana neshidi abe yizimo eziyisilinda futhi avale izindawo ezigqagqene kanye nokunamathelayo, kubalulekile ukuqaphela ukuthi azikho izithombe noma umbhalo okufanele uklanywe ezindaweni zokuvala ukuze kugwenywe ukuthikameza amandla okubopha.
Ukubekwa kwebhakhodi
Ngokuvamile, isiqondiso sokubekwa kwebhakhodi kufanele sihambisane nesiqondiso sokuphrinta, ngaphandle kwalokho kuzodala ukuhlanekezela kwemigqa yebhakhodi, okuzothinta imiphumela yokuskena futhi kubangele ukufunda kabi.Ngaphezu kwalokho, ukukhethwa kombala wemikhiqizo yelebula kufanele kugxile emibaleni yamabala ngangokunokwenzeka, futhi ukukhiqizwa kwezinguqulo ezimhlophe kuyadingeka, okungenziwa kugcwale noma kungenalutho kuye ngokwesimo sangempela.Umbala wamabhakhodi kufanele ulandele izidingo ezivamile, okungukuthi, inhlanganisela yombala wamabha nezikhala kufanele ihambisane nesimiso sokumatanisa umbala webhakhodi.Ukukhethwa kwezinto zokuphrinta.Ukuphrinta kweamalebula okunciphisa ukushisaiye yahlaziywa kafushane, futhi ngaphandle kokulawula inqubo yokunyathelisa kahle, ukwaziswa kudlala indima ewujuqu kukhwalithi yako.Ngakho-ke, ukukhetha izinto ezifanele kubalulekile.Nquma ukushuba kwento yefilimu ngokususelwa kunkambu yesicelo, izindleko, izici zefilimu, ukusebenza kokuncipha, inqubo yokuphrinta, kanye nezidingo zenqubo yokulebulailebula yokunciphisa ukushisa.Imfuneko jikelele yokwenzashwabanisa amalebula efilimuukuthi ubukhulu befilimu kufanele bube phakathi kwama-microns angu-30 nama-microns angu-70, kanye nama-microns angu-50, ama-microns angu-45, nama-microns angu-40 asetshenziswa kakhulu.Ugqinsi oluthile luncike ekusebenzeni kokulebula kwezinto zokusebenza zokulebula.Okokusebenza kwelebula okukhethiwe, ngokuvamile kuyadingeka ukuthi izinga lokushwabana lefilimu libe ngaphakathi kwebanga lohlelo lokusebenza, futhi izinga lokushwabana eliphambene (TD) lingaphezulu kwezinga lokushwabana kwe-longitudinal (MD).Amazinga okuncipha asemaceleni ezinto ezisetshenziswa ngokuvamile angama-50% kuya ku-52% kanye nama-60% kuya ku-62%, futhi angafinyelela ku-90% ezimeni ezikhethekile.Izinga lokuncipha kwe-longitudinal liyadingeka ukuthi libe phakathi kuka-6% no-8%.Ngaphezu kwalokho, ngenxa yokuzwela okuphezulu kwefilimu eyanciphayo ekushiseni, kubalulekile ukugwema ukushisa okuphezulu ngesikhathi sokugcina, ukuphrinta, nokuhamba.
Okubalulekile kokuphrinta
Ngokungafani namalebula wephepha, ifilimu yokunciphisa ukushisa isebenzisa izinto zokuphrinta ezingamunzi njengeI-PVC, PP, PETG, OPS, OPP, namafilimu ahlukahlukene anezingqimba eziningi.Izakhiwo zalezi zinto zinquma ukuthi inqubo yazo yokunyathelisa ihlukile kumalebula ephepha.Ekushicileleni okungokwesiko kwe-offset, ukuphrinta kwe-flexographic (ukuphrinta kwe-flexographic), ukuphrinta kwe-gravure, nokunyathelisa isikrini se-silika, indlela yokunyathelisa yamalebula efilimu anciphisa ukushisa isalokhu ikakhulukazi ukuphrinta kwe-gravure.Isizathu esiyinhloko ukuthi kunenani elikhulu lemishini yasekhaya yokunyathelisa i-gravure, futhi ukuncintisana kwezindleko zokunyathelisa kukhulu.Ngaphezu kwalokho, imikhiqizo yokuphrinta i-gravure inezici zongqimba lukayinki owugqinsi, imibala egqamile, nezendlalelo ezicebile, futhi lezi zinhlobo zamalebula ziwukuphrinta kwamapuleti amade.Ukuphrinta kwe-gravure kungamelana nezigidi zamashidi, Ngakho-ke ezingxenyeni ezibukhoma ezinamandla amakhulu okuphrinta, ngokungangabazeki kubiza kakhulu.Kodwa-ke, ngokuqiniswa kokuncintisana kwemakethe kanye nokuthuthukiswa kobuchwepheshe obunjengokwenza amapuleti e-flexographic, imishini, noyinki, ingxenye yokuphrinta kwe-flexographic iyanda unyaka nonyaka.Kodwa ngokombono wekhasimende, okubaluleke kakhulu ukuhlangabezana nezindinganiso zekhwalithi, ukunciphisa izindleko, nokukhetha indlela yokuphrinta efanele.
Ukulawula ukungezwani
Ngenxa yokuthi amafilimu amancanyana athinteka kakhulu ekushintsheni kwezingxabano phakathi nenqubo yokunyathelisa, okuholela ekubhaliseni okungalungile, kubalulekile ukubhekisisa ukulawulwa kokungezwani phakathi nenqubo yokunyathelisa ukuze kugcinwe ukuzinza nokulinganisa ukungezwani.Usayizi wokulungiswa kokuqina kufanele unqunywe ngokusekelwe ohlotsheni namandla okuqina efilimu.Isibonelo, uma amandla okuqina efilimu ebuthakathaka futhi ethambekele ekuguqukeni kokuqina, ukushuba kufanele kube kuncane uma kuqhathaniswa;Kumafilimu anamandla okuqina okuqinile, ukungezwani kungakhuliswa ngokufanayo.Endabeni yohlobo oluthile lwefilimu, ububanzi nokuqina kwefilimu nakho kuyizici ezibalulekile ezinquma ubukhulu bokushuba.Amafilimu abanzi kufanele abe nokushuba okukhulu kunamafilimu amancane, kuyilapho amafilimu aminyene enokushuba okukhulu kunamafilimu amancane.
I-Gravureukushisa shwabanisa ifilimuikakhulukazi isebenzisa imishini yokunyathelisa ye-unit type gravure, manje efakwe izinhlelo zokulawula ezizenzakalelayo ezicindezelayo kanye nezinhlelo ezizenzakalelayo zokulawula ukubhaliswa kombala.Ngokusekelwe ephutheni elilinganisiwe phakathi kwamamaki okubhaliswa kombala, ukungezwani endaweni yokuqaqa, indawo yokunyathelisa, nendawo emazombezombe kulungiswa ngokuzenzakalelayo ukuze kuqinisekiswe ukungezwani okuzinzile enqubweni yokuphrinta kanye nokunemba kokuphrinta kokugcina.Uma kuqhathaniswa nemishini yokunyathelisa e-stacked kanye neyunithi yohlobo lwe-flexographic, imishini yokunyathelisa yohlobo lwe-CI ifaneleka kakhulu ukusebenzisa amafilimu e-flexographic heat shrink.Lokhu kungenxa yokuthi phakathi nenqubo yokunyathelisa, iqembu ngalinye lemibala lihlanganyela isigubhu esivamile sokunyathelisa, futhi i-substrate impahla kanye nesigubhu sokunyathelisa kunamathiselwe ngokuqinile, nezinguquko ezincane ekucindezelekeni, okuholela ekuguquguqukeni okuncane kwezinto ezibonakalayo kanye nokunemba okuphezulu kokubhaliswa.
Ukukhetha uyinki
Kunezinhlobo ezine eziyinhloko zoyinki ezisetshenziselwanciphisa ukuphrinta kwefilimu: oyinki abasuselwe ku-solvent, oyinki abasemanzini, oyinki be-cationic be-UV, noyinki we-UV we-radical wamahhala.Ngokohlelo lokusebenza, oyinki abasuselwe kuncibilikisiwe babusa emkhakheni wokuphrinta ilebula yefilimu enciphayo, kulandele oyinki abasuselwe emanzini noyinki wama-radical we-UV wamahhala.Kodwa-ke, oyinki be-cationic be-UV abasetshenziswa kakhulu endaweni yefilimu eshwabene ngenxa yentengo yabo ephezulu nobunzima bokuphrinta.Uyinki osuselwe ku-solvent usetshenziselwa ikakhulukazi amafilimu okunciphisa ukushisa ku-gravure nokuphrinta kwe-flexographic.Amafilimu ahlukene kufanele asebenzise uyinki okhethekile futhi awakwazi ukuxutshwa.Izinkampani zikayinki ngokuvamile zihlinzeka ngezilinganiso ezintathu ze-solvent zikayinki ohambisana nezinto ezihlukene: ukomisa ngokushesha, ukomisa okuphakathi nendawo, nokomisa kancane.Izimboni zokuphrinta zingakhetha isilinganiso esifanele se-solvent ngokusekelwe ezimweni zangempela zokukhiqiza ezifana nezinga lokushisa le-workshop nesivinini sokuphrinta.Ngaphezu kwalokho, u-inki osuselwe emanzini kanye noyinki we-UV nawo ungasetshenziswa.Nokho, kungakhathaliseki ukuthi hlobo luni lukayinki olusetshenziswayo, kubalulekile ukucabangela ngokugcwele ukuthi izinkomba zokusebenza zikayinki kufanele zihlangabezane nezidingo.Isibonelo, izinga lokuncipha likayinki kufanele lifane nezici zokuncipha zefilimu yokunciphisa ukushisa, ngaphandle kwalokho kungase kubangele ungqimba lukayinki luhlukane noma ngisho luphume.
Ukulawula izinga lokushisa lokumisa
Kubaluleke kakhulu ukulawula izinga lokushisa lokumisa kahle lapho ushicilela amafilimu anciphisa ukushisa.Uma izinga lokushisa lokumisa liphezulu kakhulu, impahla izoba nokuncipha okushisayo;Uma izinga lokushisa liphansi kakhulu, uyinki ngeke wome ngokwanele, okuholela ekunamatheleni kokugcina nokungcola ngemuva.Imishini yokomisa imibala ifakwe kuyo yomibili imishini yokuphrinta ye-gravure ne-flexographic ukuze kuqinisekiswe ukomiswa okuphelele kombala ngamunye kayinki.Ngesikhathi esifanayo, ukuze kuvinjwe ukuguqulwa kwezinto ngesikhathi senqubo yokomisa, kuyadingeka ukusetha iziteshi zomoya obandayo phakathi kwamadekhi ombala ukuze ulawule ithonya lokushisa okusalayo.Namuhla, izigubhu eziqandisiwe zisetshenziswa emishinini yokunyathelisa, enganciphisa ngokushesha izinga lokushisa lezinto ngesikhathi sokunyathelisa.Ngenxa yokufaneleka okujwayelekile kokuphrinta kwamafilimu ashwabanayo, njengokuzinza kwamakhemikhali okuqinile, amandla aphansi angaphezulu, indawo ebushelelezi ngaphandle kokumuncwa, nokungahlobani kahle noyinki wokuphrinta.Ngakho-ke, kungakhathaliseki ukuthi iyiphi indlela yokunyathelisa esetshenzisiwe, ifilimu idinga ukwelashwa kokukhishwa kwe-corona ukuze ithuthukise amandla ayo angaphezulu kanye nokuba mahhadladla, futhi ithuthukise ukushesha kokunamathela kukayinki endaweni ebonakalayo.
Isikhathi sokuthumela: Jan-25-2024
