Isikhwama se-PE siyisikhwama esivamile empilweni yethu yansuku zonke, esetshenziselwa zonke izinhlobo zokufaka izithelo nemifino, izikhwama zokuthenga, ukupakishwa kwemikhiqizo yezolimo, njll. Ukwenza isikhwama sefilimu yepulasitiki esibonakala silula kungaba nzima kakhulu. Inqubo yokukhiqiza isikhwama se-PE ihlanganisa izinhlayiya zepulasitiki - ukuxuba kokuqedwa kokushisa - ukwelulwa kwe-extrusion - ukwelashwa nge-elekthronikhi -; Isikhwama se-PE ngokuyinhloko yizinqubo ezimbalwa ezingenhla, ezenziwe lula ngemva kwezinqubo ezintathu: ifilimu efuthayo ------ ukuphrinta ------ ukwenza isikhwama.
Inqubo yokunyathelisa yesikhwama se-PE kufanele inake ini?
I-polyethylene, ukumelana nokushisa okuphansi okuhle kakhulu (sebenzisa izinga lokushisa elifinyelela ku--70 ~-100), ukuzinza kwamakhemikhali, ukuguguleka kwe-asidi eningi kanye ne-alkali (ngokungabekezelelani kwe-oxidizing acid), okungancibiliki ngokujwayelekile kumakhemikhali okushisa ekamelweni, ukumuncwa okuphansi, ukusebenza kahle kokufakwa kukagesi. Kodwa-ke, i-polyethylene iyazwela ekucindezelekeni kwemvelo (isenzo samakhemikhali kanye nemishini) futhi impofu ekugugeni kokushisa. Izakhiwo ze-polyethylene ziyahlukahluka ezinhlotsheni kuya kwezinhlobo, ikakhulukazi kuye ngesakhiwo samangqamuzana nokuminyana. Imikhiqizo enokuminyana okuhlukile (0.91-0.96 G/CM3) ingatholwa ngezindlela ezihlukene zokukhiqiza. I-Polyethylene ingacutshungulwa ngezindlela ezijwayelekile zokwenza i-thermoplastic (bheka ukucutshungulwa kwePlastiki).
Yimaphi amanothi ahlobene nenqubo ngemininingwane engezansi?
Inqubo yokufutha ifilimu kufanele inake amaphuzu alandelayo:
1. Ingxenye yempahla eluhlaza: ngokwezidingo ezihlukahlukene zezikhwama ze-PE, ukulungiswa kwezilinganiso ezahlukene zezinto zokusetshenziswa. Isibonelo: i-anti-static, i-anti-rust, inciphisa, i-conductivity kagesi, i-biodegradation nezinye izidingo, engeza izinhlobonhlobo zezithasiselo ezisizayo njengesibonelo: ukusebenzisa umbala obomvu, omnyama, umbala neminye, engeza izinhlobonhlobo zamakepisi ombala. Ngokusobala, ukuqina, amandla okudabula, ukukhipha i-vacuum nezinye izidingo, kushintsha izinhlobo zemikhiqizo noma izinhlobo zezinto ze-PE. Isibonelo: ngokwezidingo ezikhethekile, gcizelela izidingo zokucaca okuphezulu, ukuklebhula okuqinile, ukuvuleka okuhle, ukuze uguqule ingxenye yezinto zokusetshenziswa.
I-2.inqubo yokuphefumula ukuphrinta kwefilimu, isidingo sokucutshungulwa kwe-elekthronikhi, ngalesi sikhathi ukunaka amandla okucutshungulwa kwe-elekthronikhi, ukuqinisekisa ukuthi i-PE drum material electronic processing strength (DAYIN) ngokwanele ukuqinisekisa ukunamathela kweyinki.
3.ngenqubo yokuqhuma ifilimu, ngokusho kwezidingo ezikhethekile zefilimu, ukuvulwa okukodwa, ukuvula kabili, ukugoqa, ukulimala kwendawo yokucindezela, ukufaka imbossing, ukunwetshwa kanye neminye imisebenzi.
Inqubo yokuphrinta isikhwama se-PE kufanele inake lezi zindaba ezilandelayo:
1.inki yokunyathelisa: uyinki osuselwe emanzini, uyinki owomisa ngokushesha, uyinki ongabonakali, uyinki oshintsha umbala, uyinki yokulwa nomgunyathi, uyinki wokungenisa, u-conductive, uyinki ophansi kagesi, u-matte inki nezinye izici ziyinki.
2. Ipuleti yokuphrinta: ngokwezidingo ezinhle zokuqukethwe kokuphrinta, i-gravure (ipuleti yethusi) ukuphrinta kanye ne-flexography (offset) ukuphrinta kusetshenziswa. Lezi zindlela ezimbili zokuphrinta ezihlukene.
3. Ngokuhambisana yinkimbinkimbi yokuqukethwe kokuphrinta kanye yinkimbinkimbi yombala, khetha indlela yokunyathelisa: ukuphrinta kwe-monochrome, ukuphrinta okuphindwe kabili kwe-monochrome, ukuphrinta kombala ohlangothini olulodwa, ukuphrinta kombala okabili.
4. Ngokwezidingo ezikhethekile zamaphethini wokuphrinta, ngokusho kwezimpawu zokuguquguquka, ukulwa nokukhwabanisa, ukuqhutshwa kukagesi, ama-adhesives nokunye, khetha uyinki noma izithasiselo ezahlukene.
Isikhathi sokuthumela: Mar-03-2022