Ukungafihli okuphezulu kuyasiza ekuhlonzweni kwezimpahla;ukuphakama okuphezulu kwe-longitudinal kuhambisana nokwelula kwangaphambili nokonga ukusetshenziswa kwezinto ezibonakalayo;ukusebenza kahle kokubhoboza namandla okudabula okuphambene kuvumela ifilimu ukuthi ihlangane namakhona acijile noma Unqenqema alunqamuki;iphuzu lokukhiqiza eliphezulu lenza izimpahla ezipakishiwe ziqine kakhulu.
Ifilimu ekhiqizwe indlela yokulingisa inokucaca okuphezulu.Ngokukhula kwenani lama-athomu C we-comonomer yezinto ezibonakalayo, ubude beketanga legatsha buyakhula, i-crystallinity iyancipha, kanye nomphumela "wokuvunguza noma we-kinking" we-copolymer ephumela, ngakho-ke ukwanda kuyanda, namandla okubhoboza kanye amandla ezinyembezi nawo anda.Futhi i-MPE iyi-polymer e-stereoregular kakhulu enokusabalalisa kwesisindo se-molecule encane, engakwazi ukulawula ngokunembile izakhiwo ezibonakalayo ze-polymer, ngakho-ke ukusebenza kwayo kuthuthukiswa nakakhulu;futhi ngenxa yokuthi i-MPE inokusabalalisa kwesisindo samangqamuzana amancane kanye nobubanzi obuncane bokucubungula, kunzima ukulawula izimo zokucubungula.Engeza u-5% we-LDPE ukuze unciphise i-viscosity encibilikayo futhi ukhuphule ukucaba kwefilimu.
Intengo ye-MPE nayo iphezulu.Ukuze kwehliswe izindleko, i-MPE ivamise ukusetshenziswa ngokuhlanganiswa ne-C4-LLDPE, kodwa akuyona yonke i-C4-LLDPE engafaniswa nayo, ngakho kufanele kube khona ukukhetha.Amafilimu anwebekayo asebenzisa umshini ngokuvamile asebenzisa izinto ze-C6 ne-C8, okulula ukusetshenzwa futhi angahlangabezana nezidingo zokupakisha ezahlukahlukene.Ngokufakwa ngesandla, izinto ze-C4 zisetshenziswa kakhulu ngenxa yesilinganiso esiphansi sokunwebeka.
Ukuminyana kwezinto kuthinta nokusebenza kwefilimu.Njengoba ukuminyana kukhula, izinga lokuma liyakhula, ukucaba kuhle, ukunwetshwa kwe-longitudinal kuyanda, namandla esivuno ayanda, kodwa amandla okudabula aphambene, amandla okubhoboza kanye nokudluliswa kokukhanya konke kuyehla.Ngakho-ke, ukusebenza sekukonke kwazo zonke izici kuvamise ukuba ku-non-stick Engeza inani elifanele le-medium density linear polyethylene (LMDPE) kungqimba.Ukwengeza i-LMDPE kungase futhi kwehlise i-coefficient of friction yesendlalelo esinganamatheli futhi kugweme ukunamathela kwephalethi epakishiwe kuphalethi.
Umthelela wokushisa kwe-roll yokupholisa.Njengoba izinga lokushisa lomqulu wokupholisa likhula, amandla okukhiqiza ayanda, kodwa ezinye izakhiwo ziyancipha.Ngakho-ke, izinga lokushisa lomqulu wokupholisa I ngokuvamile lilawulwa ku-20°C kuya ku-30°C.Ukushuba komugqa wokulingisa kuthinta ukucaba nokucinana kwefilimu.Uma i-PIB noma i-masterbatch yayo isetshenziswa njengesendlalelo esinamathelayo, iphinda ithinte ukufuduka kwe-PIB futhi inciphise i-viscosity yokugcina yefilimu.I-tension ngokuvamile ayidluli ku-10kg.Ukucindezeleka okukhulu kuzohlala kumqulu wefilimu, okuzonciphisa ubude nezinye izakhiwo futhi kubangele kalula ukuphuka kwefilimu.Ifomu lokufaka isicelo se-stretch film
Ifilimu yokwelula inohlelo olubanzi lwezinhlelo zokusebenza, ikakhulukazi ezisetshenziswa ngokuhambisana nama-pallet, ukupakisha izimpahla ezihlakazekile ngobuningi, esikhundleni seziqukathi ezincane.Ngenxa yokuthi inganciphisa izindleko zokuthuthwa kwempahla eningi kanye nokupakishwa ngamaphesenti angaphezu kuka-30, isetshenziswa kabanzi ekuhlanganisweni okuphelele kwemikhiqizo ehlukahlukene efana ne-hardware, amaminerali, amakhemikhali, imithi, ukudla, imishini, njll;emkhakheni wokugcinwa kwempahla, ibuye isetshenziswe kakhulu phesheya.Amaphalethi efilimu enwetshiwe apakishwe ukuze agcinwe ezinhlangothini ezintathu kanye nezokuthutha ukuze konge indawo nomsebenzi.
Isikhathi sokuthumela: Jul-08-2021