Boleng ba thepa ea aluminium foil le mokhoa oa eona oa tlhahlobo
Meriana ea aluminium foil pinhole le ho fumanoa ha eona: Aluminium ea tšepe e na le sebopeho sa kristale ea tšepe e teteaneng haholo, 'me ho nahanoa hore foil e phethahetseng ea aluminium e ka thibela khase efe kapa efe ka botlalo, mouoane oa metsi le khanya. Empa bonneteng, ka lebaka la tšusumetso ea lintlha tse ngata tse kang mokhoa oa ho roala o sebelisoang ha ho etsoa foil ea aluminium, boleng ba oli e rothang, boemo ba bokahodimo ba mokokotlo, theknoloji ea ts'ebetso ea ts'ebetso le tikoloho ea sebaka sa tlhahiso, mefokolo e fapaneng e hlaha ka har'a foil ea aluminium, haholo-holo foil e tšesaane ea aluminium. Pinholes ke e 'ngoe ea tse bohlokoa ka ho fetisisa.
Boholo le palo ea likoti ke e 'ngoe ea lintlha tsa bohlokoa tsa ho lekanya boemo ba boleng ba lihlahisoa tsa aluminium.. Ke ka lebaka la boteng ba likoti tse etsang hore ho kenella ha oksijene le mouoane oa metsi ho foil ea aluminium e se be zero..
Boholo le palo ea li-pinholes tsa aluminium foil li na le tšusumetso e matla ho hanyetsa mongobo, thepa ea thibelo ea khase le thepa ea moriti o bobebe oa foil ea aluminium le lisebelisoa tsa eona tse kopaneng. naha ea heso maemo a naha ea GB3198-1996 etsa litokisetso tse latelang ka pinholes: “Bokaholimo ba foil ea aluminium bo lumelloa ho ba le masoba a bonoang ka mahlo, empa masoba a se ke a ba a lekaneng, 'me bophara ba likoti tsa aluminium foil ea meriana e ke ke ea e-ba khōlō ho feta 0.3 mm, mme e ke ke ya feta 0.3 mm. 5 likhomphutha/m². Boholo ba lesoba la foil ea aluminium e hloekileng ea indasteri ha ea lokela ho feta 0.5 mm.
Hobane likoti ke sesupo sa bohlokoa bakeng sa ho bona lifolakha tsa aluminium, lisebelisoa tse ngata tsa tekheniki tsa kantle ho naha li hlakisa masoba a masela a aluminium kapa phetiso ea mouoane oa metsi oa masela a aluminium.. Mokhatlo oa Amerika oa Teko le Lisebelisoa o tloaelehileng ASTMB-479-85 “Tekanyetso ea Tekheniki bakeng sa Aluminium Foil e Annealed le Alloy Aluminium Foil bakeng sa Barrier Flexible Packaging.” e hlalosa: “Ha hoa lokela ho ba le likoti tse ngata haholo, le foil ea aluminium e nang le botenya bo fetang 0.5 mm e lokela ho se be le masoba.” Tekanyetso ea Indasteri ea Japane JISZ1520 -1975 “Tekanyetso ea Motsoako oa Aluminium Foil” e fana ka lintlha tsa phetiso ea mouoane oa metsi ea foil ea aluminium e kopaneng.
Hajoale, ho na le lekhalo le leholo lipakeng tsa boemo ba boleng ba foil ea aluminium ea lehae le linaha tsa kantle, e bonahatsoang haholo ke palo le boholo ba masoba. Litekanyetso tse ling tsa kantle ho naha li bolela hore ha ho na masoba ha botenya ba foil ea aluminium bo feta 0.025 mm, athe litekanyetso tsa lehae li bolela hore ha ho na lesoba la tšitiso ha botenya ba foil ea aluminium bo le boholo ho feta 0.05 mm. Bakeng sa li-pinholes, maemo a tsoang kantle ho naha a bolela hore masoba a maholo ho feta 0.1 mm ha lia lumelloa, ha litekanyetso tsa malapeng li bolela hore boholo ba likoti tsa pinho bo ka fihla 0.5 mm.
Ho ntlafatsa boleng ba foil ea aluminium le ho fokotsa palo le boholo ba likoti tsa aluminium foil ke mathata ao baetsi ba aluminium ba malapeng ba hlokang ho a rarolla ka potlako.. HWPFP esale e etsa boiteko bo boholo ntlheng ena ho netefatsa boleng ba foil ea aluminium ea moriana.
Tlhahlobo ea tekanyo ea pinhole ea foil ea aluminium e phethiloeng: Tafole ea ho hlahloba likoti: sebelisa lebokose la lehong la 800 mm x 600 mm x 300 mm kapa molumo o nepahetseng, kenya lebone la fluorescent la 30W ka lebokoseng la lehong, beha poleiti ea khalase holim'a lebokose la lehong, 'me poleiti ea khalase e kenngoe ka pampiri e ntšo' me U siee sebaka sa 400mm x 250mm bakeng sa ho hlahloba likoti tsa mohlala.. Nka 20 mehlala e nang le bolelele ba 400 mm le bophara ba 250 mm ho tloha foil e phethiloeng ea aluminium, li behe holim'a tafole ea ho hlahloba masoba ka bonngoe, le ho hlahloba likoti tsa bona lefifing.
Litlhoko tsa likoti ke hore ho se be le tse teteaneng, tswelang pele, li-pinholes tsa nakoana, ha ho masoba a nang le bophara bo boholo hofeta 0.3 mm, mme eseng ho feta 1 lesoba ka mithara sekwere le bophara ba 0.1-0.3 mm .
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