Ukwelashwa kwe-Corona kwamafilimu epulasitiki kuwubuchwepheshe obuyinhloko obubhekana nokunamathela kabi-kwamafilimu angewona ama-polar. Ithuthukisa amandla angaphezulu amafilimu ngezenzo ezimbaxambili zomzimba nezekhemikhali, ibeka isisekelo esiqinile sezinqubo ezilandelayo njengokuphrinta, i-lamination, ne-coating. Yonke le nqubo idinga ukulawulwa okunembile kokutholwa kwengcindezi yendawo, ukumiswa kwezinto zokusebenza, ukulungiselelwa kwepharamitha, ukuqinisekiswa komphumela, nokugcinwa kokuphepha ukuze kuqinisekiswe ikhwalithi yokwelashwa ezinzile kanye nokuhlangabezana nezidingo zokukhiqiza ezimbonini.
Uhlolojikelele Lokwelashwa KweCorona
Amafilimu epulasitiki isikhathi esiningi awawona{0}}ama-polar polymer. Uma ingelashwa, ukungezwani kwawo okungaphezulu kuba ngu-29-33 dynes/cm kuphela, okwenza kube nzima kuma-inki nezinamatheliso ukwakha amabhondi aqinile. Ukwelashwa kwe-Corona kusebenzisa inkambu kagesi enamandla amakhulu-emvamisa ephezulu ukuze kufakwe i-ioni emoyeni, kufinyelele ukuqina komzimba kanye nokuguqulwa kwe-chemical polarity endaweni yefilimu, okwandisa kakhulu ukungezwani kwendawo ku-38-52 dynes/cm, kuxazululwe kahle inkinga yokunamathela.
Umgomo oyinhloko ubandakanya-imvamisa ephezulu-yamandla kagesi okudala inkambu kagesi eqinile phakathi kwe-electrode ne-corona roller, okwenza ama-molecule omoya abe yi-ioni{2}}ye-plasma enezinga lokushisa eliphansi. Lapho i-plasma iqhumisa indawo yefilimu, yenza izakhiwo ze-nanoscale凹凸 ngomthelela wokugeleza kwe-electron, ikhulise indawo ethile, kuyilapho ngesikhathi esifanayo yethula amaqembu asezindaweni ezishisayo njengamaqembu e-carbonyl ne-hydroxyl ngokusabela kwe-oxidation, ithuthukisa amandla angaphezulu. Lo mshini ombaxambili unikeza ifilimu elandiwe kokubili amandla okubambelela kanye namandla okukhangisa.
Uma kuqhathaniswa nokwelashwa kwelangabi nokwelashwa ngamakhemikhali, ukwelashwa kwe-corona kunikeza izinzuzo ezinjengokusebenza okulula, imiphumela elawulekayo, izindleko eziphansi, nokungakhiphi okungcolisayo. Ifaneleka ngokukhethekile-imigqa yokukhiqiza eqhubekayo enesivinini esiphezulu futhi isiphenduke inqubo evamile ezimbonini ezifana nokupakishwa okuguquguqukayo, amafilimu e-elekthronikhi, nokuphrinta, okuhlanganisa izinhlobo zefilimu ezivamile ezihlanganisa i-LDPE, PP, BOPP, ne-PET.
Ukulungiselela kanye Nokutholwa Kwengcindezi Yobuso
Ngaphambi kokwelashwa, kuyadingeka ukunquma ukungezwani kokuqala kwendawo yefilimu kanye nenani eliqondiwe, bese ulungiselela imishini kanye nenqubo yokugwema ukwelashwa okuyimpumputhe okuholela emiphumeleni emibi noma ukulimala kwefilimu.
Izidingo ezijwayelekile zokungezwani kwefilimu zimi kanje: Ifilimu ye-LDPE idinga ukunyuka ukusuka ku-29-31 dynes/cm kuya ku-38-40 dynes/cm; Ifilimu ye-HDPE kusuka ku-30-32 kuya ku-39-41 dynes / cm; Ifilimu ye-PP kusuka ku-30-32 kuya ku-40-42 dynes / cm; Ifilimu ye-BOPP kusuka ku-31-33 kuya ku-40-42 dynes / cm; Ifilimu ye-PET kusuka ku-40-42 kuya ku-48-52 dynes / cm.
Izindlela zokuthola ukushuba kwendawo zifaka indlela yokuhlola i-dyne pen, elula kakhulu-ukutholwa kwesayithi; indlela ejwayelekile yokuhlola ingxube ngokwe-DIN ISO 8296, enembile futhi ewumgogodla wokwahlulela ngekhwalithi yaselabhorethri; kanye nendlela ye-BOPP yokuxebula itheyiphu yokwahlulela kwekhwalithi yokuqala.
Amalungiselelo okwelashwa kwangaphambili-ahlanganisa ukuhlola ukuphepha kwemishini, ukuqinisekisa ukusekelwa okuthembekile{1}}kokuphehla kwamandla kagesi aphezulu, akukho ukugqwala noma izinto zangaphandle ku-electrode, ukusebenza okuvamile kwesistimu yokukhipha umoya we-ozone, nokulinganisa indlela yefilimu ukuze kuqinisekiswe ukuhamba kwezinto ezibonakalayo okushelelayo nokumbimbi{2}. Imingcele yokuqala kufanele isethwe ngokusekelwe ohlotsheni lwefilimu, ukujiya, nobubanzi.
Ukucushwa Kwezisetshenziswa kanye Nokusethwa Kwepharamitha Kokwelashwa KweCorona
Ukusebenza kokwelashwa kwe-corona kuncike kukho kokubili ihadiwe yemishini kanye nokwenza kahle kwepharamitha. Kubalulekile ukuqonda umsebenzi wengxenye ngayinye, usethe ngokunembile amapharamitha angukhiye, futhi uqinisekise futhi ulungise-isikhathi sangempela ukuze uqinisekise ukwelashwa okufanayo nokuzinzile.
Okokusebenza kuqukethe izingxenye ezibalulekile ezimbalwa: -ijeneretha ye-voltage ephezulu, umgogodla wesistimu, ukuguqula amandla e-AC abe phezulu-imvamisa ephezulu{2}}okukhipha amandla kagesi; isistimu yama-electrode, ekhipha{3}}amandla kagesi ane-voltage ephezulu; i-rola yokwelapha i-corona, esebenza njenge-dielectric; uhlelo lokukhishwa kwe-ozone, olufakwe ngqo ngaphezu kwe-electrode; kanye nesistimu yokudlulisa ifilimu, ukuqinisekisa ukuthi ifilimu idlula endaweni yokwelapha ngesivinini esingaguquki.
Amapharamitha enqubo ebalulekile kanye nendlela yawo yokuhlela ihlanganisa amandla okwelapha, abalwa ngefomula ethile lapho i-coefficient yamandla ihlukahluka ngohlobo lwefilimu; igebe electrode, ngokuvamile 1-3mm; imvamisa, ububanzi obujwayelekile 18-30kHz; kanye nesivinini sokwelashwa, esilungiswe ngokuhambisana namandla.
Imingcele yereferensi yamafilimu ahlukene yile ndlela elandelayo: ifilimu ye-LDPE, i-coefficient yamandla 0.8-1.2, imvamisa evamile 18-22kHz; ifilimu ye-HDPE, 1.0-1.5, 20-24kHz; ifilimu ye-PP, 1.2-1.8, 22-26kHz; yefilimu ye-BOPP, 1.5-2.0, 24-28kHz; ngefilimu ye-PET, 2.0-2.5, 26-30kHz.
Ukuqinisekiswa kwesikhathi-kwangempela kanye nokulungiswa kubandakanya ukuqinisekiswa okusheshayo okuku-inthanethi ngepeni lokuhlola le-dyne njalo ngemizuzu engama-30; ukuqinisekiswa okunembile ngoketshezi olujwayelekile lokuhlola njalo emahoreni angama-2-4; kanye nokulungiswa okuhlakaniphile kusetshenziswa isistimu yokuqapha eku-inthanethi yokulawula okunembayo okunganamuntu.
Ukuqinisekiswa Komphumela Wokwelashwa Nokucatshangelwa Kokucubungula Okulandelayo
Okuthunyelwe-kokwelashwa,{1}}ukuqinisekiswa kwezinhlangothi eziningi kuyadingeka ukuze kuqinisekiswe ukusebenza kahle, kuyilapho kugwenywa ingcuphe yokuwohloka komphumela phakathi nokucubungula okulandelayo ukuze kuqinisekiswe ikhwalithi yokugcina yomkhiqizo.
Izindlela zokuqinisekisa umphumela wokwelapha zisukela ku-macro kuye kwezincane: ukulinganisa okunembile kokushuba kwendawo kusetshenziswa indlela yoketshezi yokuhlola ejwayelekile; ukuhlaziywa kwesakhiwo samakhemikhali kusetshenziswa i-ESCA noma i-ATR-FTIR; ukubonwa kwe-microscopic morphology usebenzisa i-SEM; kanye nokuhlolwa kwezicelo ezingokoqobo ezifana nokuhlolwa kokuphrinta/kwe-laminating.
Ukucatshangelwa okubalulekile kokucubungula okulandelayo kuhlanganisa ukulawula isikhathi, njengoba umphumela wokwelapha ululaza ngokuhamba kwesikhathi, odinga ukuqedwa kwezinqubo ezilandelayo phakathi kwamahora angu-24; ukuvikela ukungcola, okudinga ukuthi opharetha bagqoke impushana{1}}amagilavu amahhala namafilimu azosongwa ngefilimu ye-PE ngesikhathi sokuthutha; ukwelashwa kwesibili kwamafilimu agcinwe ngaphezu kwamahora angu-48 noma angcolile; kanye nokulinganisa ukushuba, lapho izinqubo ezahlukene zidinga amazinga ahlukene wokushuba.
Ukuvinjelwa nokuphathwa kokucekelwa phansi komphumela kungafinyelelwa ngokusebenzisa ifomula,{0}}ngokwelashwa kwe-corona yomugqa, nokuqapha ukonakaliswa.
Imininingwane Yokusebenza Kokuphepha Nokugcinwa
Ukwelashwa kwe-Corona kuhilela amandla kagesi aphezulu kanye ne-ozone, okudinga ukubambelela ngokuqinile emithethweni yokuphepha nokunakekelwa okufanele kwemishini ukuze kuqinisekiswe ukusebenza{0}}okuzinzile kwesikhathi eside.
Izidingo zokusebenza eziyinhloko zokuphepha zihlanganisa ukuvikela phansi, nokutholwa kwamasonto onke kokumelana nendawo; ukuvikelwa kwe-ozone, okufakwe imitshina ye-ozone endaweni yokusebenzela; ukuvikela{0}kagesi okuphezulu, okudinga ukunqanyulwa kwamandla kanye nokuqinisekiswa kokukhipha ngaphambi kokulungiswa; ukuvimbela umlilo nokuqhuma, ukugcina izindawo zokwelapha kude nezinto ezivuthayo; kanye nokuvikelwa komuntu siqu, okudinga ukuthi opharetha bagqoke izicathulo ezivaleleke nezingilazi zokuzivikela.
Amaphuzu okugcina izinto zokusebenza ahlanganisa ukusula nsuku zonke kwendawo ye-electrode nge-ethanol e-anhydrous; ukuhlolwa kwamasonto onke{0}kokuxhunywa kwamakhebula kagesi aphezulu kanye nokuhlolwa kwesistimu yokupholisa; ukuhlanzwa ngekota kwezikhala ze-electrode kanye nokuhlolwa kwama-corona roller bearings; kanye nokushintshwa kwaminyaka yonke kwamakhebula{1}}amandla kagesi aphezulu kanye nokutholwa komthamo womoya we-ozone emission fan.
Amathrendi Okufingqiwe kanye Nobuchwepheshe
Ukwelashwa kweCorona kwamafilimu epulasitiki kuyinqubo lapho imininingwane inquma impumelelo. Sonke isinyathelo, kusukela ekutholeni ukushuba kwendawo kuya ekusethweni kwepharamitha, kusukela ekuqinisekiseni umphumela kuya ekulungisweni kokuphepha, kudinga ukulawula okunembile ukuze kufinyelelwe imigomo yokukhiqiza yokunamathela okuphezulu, ukulahlekelwa okuphansi, nokusebenza kahle okuphezulu.
Njengamanje, ubuchwepheshe bokwelapha i-corona buyathuthukela kwezobuhlakani nokonga amandla. Imishini ehlakaniphile ingasebenzisa ama-algorithms e-AI ukubikezela amapharamitha, inciphise ukulungiswa okwenziwa ngesandla. Amandla-onga aphezulu{3}}amajeneretha kagesi anciphisa ukusetshenziswa kwamandla ngo-15-20% kanye nokukhiqizwa kwe-ozone ngo-10%, ukuhlangabezana kangcono nezimfuneko zemvelo. Ukwenza kahle yonke inqubo yobuchwepheshe kubaluleke kakhulu kumabhizinisi amafilimu epulasitiki ukuthuthukisa ikhwalithi yomkhiqizo nokunciphisa izindleko.
U-Hefeng, njengomkhiqizi wase-China ochwepheshile, angancoma Ama-Plastic Film Corona Treaters afanelekile noma imishini yokwelapha ye-plasma esekelwe kuma-substrates amakhasimende okuphrinta (njengamafilimu epulasitiki, amaphepha, izinsimbi zensimbi). Imishini yethu isekela ukulungiswa kwepharamitha Ngokwezifiso, ngamamodeli avamile esitokweni ukuze alethwe ngokushesha. Ngaphambi kokuthenga, amakhasimende angafaka isicelo samasampuli wamahhala ukuze ahlole ukusebenza kahle kokwelashwa. Sinikeza amaPricelists acacile namakhotheshini, futhi ukuthengwa kwe-Bulk kufaneleka ukuthola izaphulelo zokuthenga, kusiza amakhasimende ukuxazulula ukunamathela okwanele kokuphrinta ngezindleko eziphansi.