一, Ukuphrinta izinto zokupakisha eziguquguqukayo zokudla
①Indlela yokuphrinta
Ukuphrinta kokupakisha okuguquguqukayo kokudla ngokuyinhloko ukuphrinta kwe-gravure nokuphrinta kwe-flexographic, kulandelwa ukusetshenziswa komshini wokunyathelisa we-flexographic ukuphrinta ifilimu yepulasitiki (umshini wokunyathelisa we-flexographic kanye nomshini ohlangene owomile wakha umugqa wokukhiqiza), kodwa kukhona umehluko omningi uma kuqhathaniswa nokuphrinta kwe-gravure evamile kanye ukuphrinta kwe-flexographic okusetshenziselwa ukushicilela nokuphrinta kwempahla.Isibonelo, ukuphrinta kokupakisha okuguquguqukayo kwenziwa ebusweni be-substrate emise okwe-roll.Uma ifilimu esobala, iphethini ingabonakala ngemuva, futhi ngezinye izikhathi ungqimba lopende omhlophe ludinga ukuphrinta, noma inqubo yokunyathelisa yangaphakathi isetshenziswa.
②Incazelo yenqubo yokuphrinta yangaphakathi
Ukuphrinta kwangaphakathi kubhekisela endleleni yokuphrinta ekhethekile esebenzisa ipuleti lokuphrinta lesithombe esiphambene ukuze kudluliselwe uyinki ohlangothini lwangaphakathi lwezinto zokuphrinta ezibonisa ngale, ukuze kuboniswe isithombe esihle ngaphambili kwento ephrintiwe.
③Izinzuzo zaseNdiya
Uma kuqhathaniswa nemikhiqizo ephrintiwe engaphezulu, imikhiqizo ephrintiwe yangaphakathi inezinzuzo zombala ogqamile futhi omuhle, ogqamile / wokushesha, umswakama nokumelana nokugqoka;Ngemva kokuphrinta kwangaphakathi, ungqimba lukayinki luhlanganiswa phakathi kwezingqimba ezimbili zefilimu, ezingeke zingcolise iphakheji.
二, Inhlanganisela yezinto zokupakisha eziguquguqukayo zokudla
①Indlela ehlanganisiwe emanzi
Ungqimba lwe-adhesive encibilikayo emanzini lumbozwe phezu kwesisekelo sezinto (ifilimu yepulasitiki, i-aluminium foil), ehlanganiswe nezinye izinto (iphepha, i-cellophane) ngokusebenzisa i-roller yokucindezela, bese yomiswa ibe ifilimu eyinhlanganisela ngokusebenzisa oshisayo. omisa isiteshi.Le ndlela iyasebenza ekupakisheni ukudla okomile.
②Indlela ehlanganisiwe eyomile
Okokuqala, gcoba ngokulinganayo i-adhesive-based based adhesive ku-substrate, bese uyithumela esiteshini sokumisa esishisayo ukuze wenze i-solvent iguquke ngokugcwele, bese uhlanganisa ngokushesha nenye isendlalelo sefilimu.Isibonelo, ifilimu ye-polypropylene enwetshiwe (OPP) ngokuvamile ihlanganiswa nezinye izinto ngenqubo ehlanganisiwe eyomile ngemva kokuphrinta kwangaphakathi.Isakhiwo esijwayelekile yilesi: ifilimu ye-polypropylene egxile ku-biaxially (BOPP, 12μ m) Icwecwe le-Aluminium (AIU, 9μ m) Futhi ifilimu ye-polypropylene eyelulwe ngokungaqondile (CPP, 70μ m).Inqubo iwukugqoka ngokulinganayo uhlobo lwe-solvent "i-adhesive powder eyomile" kusisekelo sezinto nge-roller coating device, bese uyithumela esiteshini sokumisa esishisayo ukuze ushise ngokugcwele isincibilikisi, bese usihlanganisa nolunye ungqimba lwefilimu nge. i-roller eyinhlanganisela.
③Indlela ye-Extrusion compound
I-polyethylene encibilikisiwe efana nekhethini ekhishwe ekusikeni kwesikhunta se-T icindezelwa yi-clamping roller futhi ifakwe ephepheni noma ifilimu yokumboza i-polyethylene, noma amanye amafilimu anikezwa engxenyeni yesibili yokuphakela iphepha, futhi i-polyethylene iboshwe njenge ungqimba oluhlanganisayo.
④Indlela yenhlanganisela ye-hot-melt
I-Polyethylene-acrylate copolymer, i-vinyl acid-ethylene copolymer kanye nopharafini ziyashiswa futhi zincibilike ndawonye, bese zimbozwa phezu kwesisekelo, ngokushesha zihlanganiswe nezinye izinto eziyinhlanganisela bese ziyapholiswa.
⑤Indlela eyinhlanganisela ye-multi-layer extrusion
Izinhlobonhlobo zama-resin epulasitiki anezakhiwo ezihlukene zimpintshana esikhunjeni ngokusebenzisa ama-extruder amaningi ukuze akhe ifilimu eyinhlanganisela.Le nqubo ayisebenzisi izinto zokunamathisela kanye nezincibilikisi eziphilayo phakathi kwezingqimba.Ifilimu ayinalo iphunga elingavamile futhi akukho ukungena kwe-solvent eyingozi.Ilungele ukupakishwa kokudla okuneshelufu ende yokuphila.Isibonelo, isakhiwo esijwayelekile i-LLDPE/PP/LLDPE sinokucaca okuhle, futhi ubukhulu buvamise ukuba ngu-50-60.μ m.Uma impilo yeshalofu iyinde, kuyadingeka ukusebenzisa izendlalelo ezingaphezu kwezinhlanu zefilimu ehlanganisiwe yokuvimbela okuphezulu, futhi ungqimba oluphakathi luyi-high barrier material PA, PET ne-EVOH.
Isikhathi sokuthumela: Mar-07-2023
