Njengoba kusondela ubusika, izinga lokushisa liyehla liphinde libe phansi, futhi ezinye izinkinga zokupakisha eziguquguqukayo zasebusika ezivamile ziye zagqama kakhulu, njengeIzikhwama ezibilisiwe ze-NY/PEfuthiIzikhwama ze-NY/CPP ezibuyisela emuvaeziqinile nezishwabeneyo; i-adhesive ine-tack ephansi yokuqala; kanye nokubukeka kwenhlanganisela yomkhiqizo Izinkinga ezinjengomehluko.
01 I-adhesive ine-tack yokuqala ephansi
Njengoba izinga lokushisa ezindaweni ezihlukahlukene selipholile,amanye amakhasimende abike ukuthi amandla okuqala okubopha okushisa okuphezulu kweglue yokupheka i-UF-818A/UK-5000 anciphile lapho enza izakhiwo ze-PET/AL/RCPP, okusho ukuthi amandla ongqimba lwangaphandle alungile, kodwa amandla ungqimba lwangaphakathi luphansi kakhulu. Kodwa ngemva kokuyibeka ekamelweni lokuguga imizuzu eyishumi, ngokushesha ithola amandla amahle. Ikhasimende selisebenzise lo mkhiqizo isikhathi esingaphezu kwesigamu sonyaka futhi uzinze kakhulu, futhi inqubo yamanje eyinhlanganisela ayikashintshi ukusuka kowokuqala.
Ngemva kokuhlolwa kwendawo, kwatholakala ukuthi ukungezwani kwezinto ezibonakalayo kwakujwayelekile futhi inani leglue elisetshenzisiwe lifinyelele ku-3.7 ~ 3.8g/m2, futhi azikho izinkinga. Kodwa-ke, lapho i-uniting unit ihlangana nefilimu, kwatholakala ukuthi ifilimu ayizwani nokufudumala, futhi yazizwa ibanda. Uma ubheka izilungiselelo zepharamitha yeyunithi ye-roller eyinhlanganisela, izinga lokushisa eliyinhlanganisela lingama-50°C futhi ukucindezela okuyinhlanganisela kungu-0.3MPa. Ngemva kweUkushisa kwe-laminating roller kuphakanyiswe ku-70 ° C futhi ukucindezela kwe-laminating kwaphakanyiswa ku-0.4Mpa, amandla okuqala okubopha athuthukiswa kakhulu, futhi ukubukeka kwenhlanganisela nakho kwathuthukiswa.
Ikhasimende likuthole kuxakile: amapharamitha amabili okushisa kwe-laminating roller engu-50℃ kanye nengcindezi ye-laminating engu-0.3Mpa ake asetshenziswa ngaphambili, futhi asikho isimo esinjalo esenzekile. Kungani kudingeka senze izinguquko manje?
Ake siqale ngokuhlaziywa kwengcindezi eyinhlanganisela: Ngesikhathi senqubo yokuhlanza okomile, ingcindezi eyinhlanganisela eshidini lenqubo yomkhiqizi ngamunye kanye nomshini wokugcwalisa owomile uvezwa kubha noma i-MPa, ngokuvamile engu-3bar noma 0.3~0.6MPa. Leli nani empeleni lifana nokucindezela kwe-cylinder exhunywe ku-roller yerabha. Eqinisweni, ingcindezi ehlanganisiwe kufanele ibe ingcindezi ezintweni ezicindezelwe phakathi kwe-composite pressure roller kanye ne-composite steel roller. Lelivelu lokucindezela kufanele libe ngu-kgf/m noma i-kgf/cm, okungukuthi, ukucindezela kubude beyunithi. Okungukuthi, F=2K*P*S/L (K yi-proportional coefficient, ehlobene nendlela yokucindezela isilinda. Uhlobo lwengcindezi eqondile ngu-1, futhi uhlobo lwe-lever lukhulu kuno-1, oluhlobene nesilinganiso yengalo yamandla ye-lever kanye nengalo yokumelana ne-P ingcindezi yesilinda; Ngenxa yokuthi ubukhulu besilinda bemishini ehlukene buhlukile futhi izindlela zokufaka ingcindezi zihlukile, lapho amanani aboniswa kuma-gauge okucindezela emishini ehlukene afana, izingcindezi zangempela azifani.
Ake sibheke izinga lokushisa le-lamination: Ku-lamination eyomile, ngemva kokuphuma kwe-adhesive emhubheni wokomisa, i-solvent iye yahwamuka, ishiya ingcina eyomile kuphela. Lokhu kungenxa yokuthi ingcina ye-polyurethane eyomile ephinda isetshenziswe izolahlekelwa yi-viscosity yayo ekamelweni lokushisa ngemva kokoma.Ukuze ama-substrates amabili ahlangane kahle, okunamathelayo kufanele kusebenze ukunamathela kwawo. Ngakho-ke, lapho i-laminating, i-roller ye-laminating kufanele ishiswe ukuze izinga lokushisa layo elingaphezulu lingabangela ukunamathela ukuze kukhiqize i-viscosity ecushiwe.
Ngemva kokungena ngoNovemba, izinga lokushisa lehla kakhulu kwezinye izindawo. Ekupheleni kukaNovemba, izinga lokushisa kwezinye izindawo lalicishe libe ngu-10°C. Lapho amakhasimende ehlanganisa i-RCPP, izinto zokusetshenziswa zikhishwa ngokuqondile endaweni yokugcina impahla ziye endaweni yokusebenzela yokukhiqiza ukuze zikhiqize. Ngalesi sikhathi, izinga lokushisa le-RCPP liphansi kakhulu. Ngokuhambisana nezinga lokushisa eliphansi le-lamination, ifilimu iyashiswa isikhathi esifushane ngesikhathi se-lamination, futhi izinga lokushisa eliphelele lefilimu eyinhlanganisela liphansi kakhulu. Isisindo samangqamuzana esihlobene seglue yokupheka esezingeni eliphezulu sikhulu ngokuqhathaniswa futhi sidinga ukushiselwa ukuze sikhuthaze umsebenzi wokunamathela. Uma izinga lokushisa liphansi kakhulu, amandla okuqala okubopha azoncishiswa kakhulu. Ngemuva kokufakwa ekamelweni lokuphulukisa, umsebenzi wokunamathisela uyakhuthazwa futhi amandla angandiswa ngokushesha.
Ngakho-ke, lapho senyusa izinga lokushisa elihlanganisiwe nokucindezela okuhlanganisiwe, le nkinga yaxazululwa.
Enye inkinga engase ihlangatshezwe lapho izinga lokushisa lefilimu liphansi ukuthi ngenxa yokuthi umehluko wokushisa phakathi kwangaphakathi nangaphandle kwendawo yokusebenzela mkhulu kakhulu, futhi indawo yokusebenzela yokunyathelisa iyaswamisa, lapho ifilimu ivuliwe, umhwamuko wamanzi uyajiya, nangaphezulu. yefilimu izoba nomuzwa omanzi, ozothinta ukubukeka komkhiqizo ngemva kokuguga. nokuqina kubangela izingozi ezinkulu ezifihliwe. Ngaphezu kwalokho, ngenxa yezinga eliphansi elibangelwa izinga lokushisa eliphansi lapho i-adhesive isetshenziswa, izinkinga zokubukeka kwenhlanganisela nazo zenzeka ngezikhathi ezithile.
Izinyathelo zokuvimbela:Ebusika, izinto zokusetshenziswa kanye nezinto zokunamathisela kufanele zibekwe endaweni yokusebenzela yokukhiqiza amahora angama-24 kusengaphambili ngangokunokwenzeka. Amakhasimende anemibandela angakha i-pre-greenhouse. Khulisa kahle izinga lokushisa kanye nokucindezela kwe-roller lamination ukuze uqinisekise ukuthi ifilimu "ifudumele" ngemva kokucwiliswa nokuvuthwa.
02 Isikhwama se-retort siqinile futhi sishwabene
Ngokufika kobusika, izikhwama ezibilisiwe ze-NY/PE kanye nezikhwama ze-NY/CPP ezibuyisela emuva ziba nzima futhi zibe brittle. Inkinga ewumphumela ukuthi izinga lokuphuka kwesikhwama liyakhula. Lokhu sekuyinkinga osekunesikhathi eside ikhona kuyo yonke imboni. Amabhizinisi amaningi amakhulu okupakisha nawo akhathazwa yile nkinga futhi afuna izixazululo.
Izikhwama ze-NY/CPP ezikwazi ukumelana nokushisa okuphezulu ngokuvamile zibhekisela ezikhwameni eziyinhlanganisela ezingavalwa inzalo ku-121°C ngaphezu kwemizuzu engama-30. Lolu hlobo lokupakisha lunokucaca okuhle, amandla aphezulu, futhi lusetshenziswa kabanzi. Izikhwama ze-NY/PE zivame ukusetshenziselwa ukubilisa kanye nezikhwama ze-vacuum ngenxa yamandla azo aphezulu kanye nokuqina okuhle.Kodwa-ke, lolu hlobo lwezikhwama zokupakisha nge-olefin njengoba ungqimba lokuvala lwangaphakathi luhlala lubhekana nezinkinga ezimbili ezinkulu: okokuqala, ebusika obubandayo obubandayo, i-brittleness yesikhwama iyanda, futhi izinga lokuphuka kwesikhwama landa; okwesibili, ngemva kokupheka noma ukubilisa, isikhwama siba nzima futhi i-brittleness iyanda.
Ngokuvamile, ungqimba lwangaphakathi lwezikhwama ze-high-tempert retort ikakhulukazi i-RCPP. Inzuzo enkulu ye-RCPP ukuthi inokukhanyela okuhle futhi ingamelana nokuvalwa kwezinga lokushisa okuphezulu okungaphezu kuka-121°C. Okubi ukuthi iqinile futhi i-brittle kunezinye izinto zongqimba zokuvala ukushisa. Lokhu kuyiqiniso ikakhulukazi ezindaweni zokushisa eziphansi.I-RCPP ihlukaniswe yaba yasekhaya futhi ingenisiwe. Kuyaqondakala ukuthi imikhiqizo yasekhaya ikakhulukazi i-homopolymerized, futhi vele ezinye izinkampani zibandakanyeka ekuguqulweni kwe-RCPP. I-RCPP engenisiwe ngokuyinhloko isekelwe ku-block, futhi ukumelana nezinga lokushisa eliphezulu kwe-homopolymer kubi kakhulu kune-block. I-Homopolymer RCPP izokhishwa ngemuva kokuvalwa kwezinga lokushisa eliphezulu, okungukuthi, i-RCPP izoba nzima futhi ibe brittle, kuyilapho i-block RCPP isengalondolozwa ngaphambi kokuvalwa inzalo. yokuthamba.
Njengamanje, i-Japan ihamba phambili ocwaningweni lomhlaba wonke lwama-polyolefin. Ama-polyolefin aseJapan nawo athunyelwa kuwo wonke umhlaba. Ukuthamba nokusebenza kukonke kwefilimu yayo ye-NY/PE nefilimu ye-RCPP yokupheka enezinga eliphezulu lokushisa kuhle kakhulu.
Ngakho-ke, mina ngokwami ngikholelwa ukuthi izinto ze-polyolefin zidlala indima ebalulekile enkingeni yobulukhuni kanye nokuqina kwezikhwama ezibilisiwe ze-NY/PE kanye nezikhwama ze-NY/CPP ezibuyisela emuva ebusika. Ukwengeza, ngaphezu komthelela wezinto zokwakha ze-polyolefin, ama-inks nama-adhesives ahlanganisiwe nawo anomthelela othile, futhi kudingeka ahlanganiswe ukuze ekugcineni akhiqize izikhwama zokupheka ezibilisiwe nezisezingeni eliphezulu.
Ubusika bunemiphumela eminingi ku-extrusion lamination, phakathi kwayo ukulungiswa kwegebe lomoya kubaluleke kakhulu, futhi wonke umuntu kufanele anake.
Isikhathi sokuthumela: Dec-09-2023
