Ngokuthuthuka okuqhubekayo kwamazinga okuphila, izindinganiso eziqinile zabantu azigcini ngokudla ngokwako. Izimfuneko zokupakishwa kwayo ziyakhuphuka. Ukupakishwa kokudla kancane kancane sekuyingxenye yomkhiqizo kusukela esimweni sawo sokusekela. Kubalulekile ukuvikela umkhiqizo, Kubaluleke kakhulu ukwenza lula ukugcinwa nokuthutha, ukukhuthaza ukuthengiswa, nokwandisa inani lomkhiqizo.
Ukuphrinta kwezinto zokupakisha eziguquguqukayo zokudla
① Izindlela zokuphrintaUkuphrinta kokupakisha okuguquguqukayo kokudlangokuyinhloko isekelwe ekunyatheliseni kwe-gravure kanye ne-flexographic, elandelwa yimishini yokunyathelisa ye-flexographic ukuphrinta amafilimu epulasitiki (imishini yokunyathelisa ye-flexographic ngokuvamile yakha imigqa yokukhiqiza ngemishini eyomile ye-lamination), kodwa ngokushicilela, uma kuqhathaniswa nokunyathelisa kwe-gravure jikelele kanye nokunyathelisa kwe-flexographic okusetshenziselwa ukuphrinta impahla, kunezinhlobonhlobo eziningi. Isibonelo: Ukuphrinta kwephakheji okuguquguqukayo kuphrintiwe ebusweni be-substrate emise okwe-roll. Uma kuyifilimu esobala, iphethini ingabonakala ngemuva. Ngezinye izikhathi kuyadingeka ukwengeza ungqimba lwepende elimhlophe noma usebenzise inqubo yangaphakathi yokunyathelisa.
② Incazelo yenqubo yokunyathelisa yasemuva Ukuphrinta emuva kubhekisela endleleni yokuphrinta ekhethekile esebenzisa ipuleti lokuphrinta elinesithombe esihlanekezela kanye nombhalo ukuze kudluliselwe uyinki ngaphakathi kwezinto zokuphrinta ezibonisa ngale, ukuze isithombe esihle nombhalo uboniswe ngaphambili. yento ephrintiwe.
③ Izinzuzo ze-Liyin
Uma kuqhathaniswa nokuphrinta okungaphezulu, ulayini oluphrintiwe lunezinzuzo zokugqama nokuhle, ezimibalabala/ezingabuni, ezivikela umswakama kanye nokungagugi. Ngemuva kokuthi ukuphrinta komugqa kuhlanganiswe, ungqimba lukayinki luhlanganiswa phakathi kwezingqimba ezimbili zefilimu, ezingeke zingcolise izinto ezipakishiwe.
Ukuhlanganiswa kwezinto zokupakisha eziguquguqukayo zokudla
① Indlela yokuhlanganisa emanzi: Gcoba ungqimba lwengcina encibilika emanzini phezu kwesisekelo (ifilimu yepulasitiki, i-aluminium foil), ihlanganise nezinye izinto (iphepha, i-cellophane) nge-roller yokucindezela, bese uyomisa endaweni eshisayo. ukomisa umhubhe Yiba ulwelwesi oluyinhlanganisela. Le ndlela ifanele ukupakisha ukudla okomile.
② Indlela ye-lamination eyomile: okokuqala sebenzisa i-adhesive-based adhesive ngokulinganayo ku-substrate, bese uyithumela emhubheni oshisayo wokumisa ukuze uhwamuke ngokugcwele i-solvent, bese u-laminate ngokushesha ngomunye ungqimba lwefilimu. Isibonelo, ifilimu ye-polypropylene eqondiwe (i-OPP) ngokuvamile ihlanganiswa nezinye izinto kusetshenziswa inqubo eyomile yokukhipha i-lamination ngemva kokuphrinta kwangaphakathi. Izakhiwo ezijwayelekile yilezi: ifilimu ye-polypropylene e-biaxially oriented (BOPP, 12 μm), i-aluminium foil (AIU, 9 μm) kanye nefilimu ye-polypropylene enwetshiwe unidirectional (CPP, 70 μm). Inqubo iwukusebenzisa idivayisi yokugqoka i-roller ukuze ugqoke ngokulinganayo "i-powder enamathela eyomile" esekwe ku-solvent, bese uyithumela emhubheni wokomisa oshisayo ukuze uhwamuke ngokugcwele isincibiliki ngaphambi kokusigcoba ngomunye ungqimba lwefilimu usebenzisa laminating roller.
③ Indlela yokuhlanganiswa kwe-extrusion ikhipha i-polyethylene encibilikisiwe efana nekhethini kusukela esisikweni se-T mold, iyicindezele nge-pinch roller, bese iyiminyisa ephepheni noma efilimini ukuze kufakwe i-polyethylene, noma inikeze amanye amafilimu asuka engxenyeni yesibili yokuphakela iphepha. Sebenzisa i-polyethylene njengesendlalelo sokunamathisela ukuze uhlanganise.
④ Indlela yenhlanganisela ye-Hot-melt: I-Polyethylene-acrylate copolymer, i-ethylene acid-ethylene copolymer, ne-wax kapharafini ziyashiswa futhi zincibilike ndawonye, bese zimbozwa ku-substrate, ngokushesha zihlanganiswe nezinye izinto eziyinhlanganisela bese ziyapholiswa.
⑤Indlela yokuhlanganisa i-multi-layer extrusion
Izinhlobonhlobo zama-resin epulasitiki anezakhiwo ezihlukile zidluliswa kuma-extruder amaningi futhi akhishwe esikhunjini ukuze enze ifilimu. Le nqubo ayidingi ama-adhesives noma ama-solvents e-organic phakathi kwezendlalelo, futhi ifilimu ayinayo iphunga noma ukungena kwe-solvent eyingozi, okuyenza ifaneleke ukupakishwa kokudla ngeshelufu ende yokuphila. Isibonelo, ukwakheka okujwayelekile kwe-LLDPE/PP/LLDPE kunokucaca okuhle futhi ubukhulu buvamise ukuba ngu-50-60μm. Uma inokuphila kweshelufu ende. Kudingeka izendlalelo ezingaphezu kwezinhlanu zamafilimu ane-high-barrier co-extruded, futhi ungqimba oluphakathi lwenziwe ngezinto ezivimbelayo eziphezulu i-PA, i-PET ne-EVOH.
Isikhathi sokuthumela: Mar-13-2024
