Faatasi ai ma le faʻaauauina pea o le faʻaleleia o tulaga o le soifuaga, o tulaga faʻapitoa a tagata e le gata i meaʻai lava ia.O manaoga mo lona afifiina o loʻo faʻatupulaʻia foi.O le afifiina o taumafa ua faasolosolo malie lava ona avea ma se vaega o le oloa mai lona tulaga lala.E taua tele le puipuia o le oloa, E taua tele le faafaigofieina o le teuina ma le felauaiga, siitia le faatauina atu, ma faateleina le tau o oloa.
Lomitusi o mea'ai e mafai ona fa'apipi'iina mea'ai
① Faiga lolomiga O lo'o fa'apipi'iina mea'ai e fa'atatau i le gravure ma le flexographic lomitusi, soso'o ma masini lomitusi flexographic e lolomi ata palasitika (masini lomitusi flexographic e tele lava ina fausia laina gaosiga ma masini lamination mago), ae fa'asalalau, fa'atusatusa i le lomitusi lautele ma gravure lomitusi. flexographic lomitusi faʻaaogaina i lomitusi oloa, e tele eseesega.Mo se fa'ata'ita'iga: Lomiga fa'apipi'i fetu'utu'una'i o lo'o lolomi i luga o le pito i luga o se mea e pei o se ta'avale.Afai o se ata tifaga manino, e mafai ona iloa le mamanu mai tua.O nisi taimi e manaʻomia le faʻaopopoina o se paʻu paʻepaʻe paʻepaʻe pe faʻaaoga se faiga lomitusi totonu.
② Faʻamatalaga o le faʻasologa o le lomitusi i tua Toe lolomi e faʻatatau i se auala faʻapitoa lomitusi e faʻaogaina ai se ipu lomitusi faʻatasi ai ma ata faʻafeagai ma tusitusiga e faʻafeiloaʻi ai le vaitusi i totonu o le mea lomitusi manino, ina ia mafai ona faʻaalia le ata lelei ma tusitusiga i luma o le mea lolomi.
③ Tulaga lelei o Liyin
Pe a faatusatusa i le lomitusi i luga, o le lining mea lolomi e iai le lelei o le susulu ma le matagofie, felanulanuaʻi / e le mou atu, susu-faʻamaonia ma ofuina.A maeʻa ona faʻapipiʻiina le lomitusi faʻapipiʻi, e faʻapipiʻi le vaitusi i le va o laupepa e lua o ata tifaga, e le faʻaleagaina ai mea o loʻo afifiina.
Fa'afefiloi o mea'ai e mafai ona fa'apipi'iina mea'ai
① Susū auala fa'afefiloi: Fa'aofuofu se vaega o le fa'apipi'i solu vai i luga o le mea fa'avae (pepa palasitika, pepa alumini), fa'afefiloi ma isi mea (pepa, cellophane) e ala i se fa'avili fa'amalosi, ona fa'agogo lea i se vevela. alavai fa'agogo Avea ma se pa'u tu'ufa'atasi.O lenei metotia e fetaui lelei mo le afifiina o meaai mamago.
② Faʻamago auala lamination: faʻapipiʻi muamua le faʻapipiʻi faʻapipiʻi faʻapipiʻi tutusa i luga o le substrate, ona tuʻuina atu lea i le ala vevela vevela e faʻamalo atoa ai le solvent, ona vave faʻapipiʻi lea i se isi vaega o ata tifaga.Mo se faʻataʻitaʻiga, oriented polypropylene film (OPP) e masani ona faʻapipiʻiina ma isi mea e faʻaaoga ai se faʻamago lamination faagasologa pe a maeʻa le lolomiina i totonu.O fausaga masani e: biaxially oriented polypropylene film (BOPP, 12 μm), alumini pepa (AIU, 9 μm) ma unidirectional Stretched polypropylene ata (CPP, 70 μm).O le faagasologa o le faʻaaogaina lea o se masini faʻapipiʻi e faʻaofuofu tutusa le solvent-based "dry adhesive powder" i luga o le mea faavae, ona auina atu lea i le ala vevela vevela e faʻamalo atoa ai le solvent aʻo leʻi faʻapipiʻiina i se isi vaega o ata tifaga e faʻaaoga ai se laminating roller.
③ O le auala faʻapipiʻi faʻapipiʻiina e aveese ai le pupuni pei o le polyethylene liusuavai mai le matala o le T mold, oomi i totonu o le pinch roller, ma faʻafefe i luga o pepa poʻo ata mo le polyethylene coating, poʻo le tuʻuina atu o isi ata mai le vaega lona lua fafaga pepa.Fa'aaoga le polyethylene e fai ma apa fa'apipi'i mo le fa'apipi'i.
④ Metotia fa'afefiloi vevela: Polyethylene-acrylate copolymer, ethylene acid-ethylene copolymer, ma le paraffin wax e fa'avevela ma fa'afefiloi fa'atasi, ona ufiufi lea i luga o le mea'ai, vave fa'afefiloi ma isi mea tu'ufa'atasi ma fa'amalieina.
⑤Multi-layer extrusion auala tuufaatasi
O le tele o resini palasitika ma meatotino eseese e pasi atu i le tele o extruders ma faʻapipiʻi i totonu o le limu e fai ai se ata tifaga.O lenei faiga e le manaʻomia ai ni mea faʻapipiʻi poʻo ni solvents organic i le va o laulau, ma o le ata tifaga e leai se manogi poʻo se mea e afaina ai le soli, e talafeagai mo le afifiina o meaʻai ma le umi o le fata.Mo se faʻataʻitaʻiga, o le fausaga lautele o LLDPE / PP / LLDPE e lelei le manino ma o le mafiafia e masani lava 50-60μm.Afai e umi se taimi e teu ai.E sili atu ma le lima laupepa o ata faʻapipiʻi faʻapipiʻi maualuga e manaʻomia, ma o le ogatotonu o loʻo faia i mea maualuga PA, PET ma EVOH.
Taimi meli: Mati-13-2024
