Zvimiro zvemultilayer co-extruded mafirimuinogona kukamurwa kuita mapoka maviri, anoti symmetric chimiro (A/B/A) uye asymmetric chimiro (A/B/C).Parizvino, iwo mabhaisikopo mafirimu muChina anonyanya kuumbwa ne5 layers, 7 layer, 8 layer uye 9 layer.Iyo symmetrical structural layer yemultilayer co-extrusion barrierdiaphragm inoumbwa nemhando nhatu dzezvikamu zvinoshanda, zvinoti barriers layer, adhesive layer uye support layer.
Barrier layer: iyo barriers layer ine mabasa ekupokana neokisijeni, hunyoro hwekudzivirira uye kudzivirira kubuda kwemafuta.Kuburikidza nekudzora kwezvivharidzo layer zvinhu uye ukobvu, iyo chipingamupinyi kuita kwezvinhu zvemufirimu inogona kugadziridzwa kuti isangane nezvinodiwa zvekurongedza zvakasiyana (zvipingamupinyi zvinowanzoshandiswa pamusika zvinosanganisira PA, EVOH, PVDC, nezvimwe.
Inotsigira layer: kazhinji, symmetrical structural zvinhu zvine mativi maviri anotsigira.Mukati wemukati unoshandiswa pakupisa chisimbiso, inova chisimbiso chekushisa-chisimbiso, nepo kunze kwekunze kunoshandiswa zvakananga seyekunze kwekunze kana kudhindwa kwepakeji yefirimu.Iyo tsigiro layer ichave yakanaka mechanical simba, kupisa kuvharisa kuita, mvura mhute kuramba, kujeka uye kudhinda.Zvinhu zvakajairika zveiyi layer ndeye LDPE kana LDPE/LLDPE musanganiswa zvinhu.
Bonding layer: basa reiyo bonding layer ndere kubatanidza barriers layer uye tsigiro layer kuti ive nechokwadi chekupenengura simba pakati pezvikamu.Kusarudzwa kweiyo bonding layer material uye ukobvu kazhinji kunotsamira pazvinhu zvetsigiro layer uye barriers layer uye inodiwa yekubatanidza simba kuti itarise iyo inonamira iyo inoshandiswa kune iyo banding layer.
Panguva imwecheteyo, kukora kwega kwega kwega kunogona kugadziriswa kuburikidza ne extrusion process.Nekugadzirisa kukora kwechivharo chevhavha uye chikamu chezvakagadzirwa, iyo firimu ine zvakasiyana-siyana zvipingamupinyi zvivakwa zvinogona kuchinjika kugadzirwa.Iyo inopisa-sealing layer zvinhu zvinogona zvakare kutsiviwa uye kugadziriswa kuti zvienderane nezvinodiwa zvekurongedza kwakasiyana.Iyo yakawanda-yakawanda uye yakawanda-inoshanda co-extrusion composite ndiyo inotungamira nzira yekuvandudzwa kwekurongedza firimu zvinhu mune ramangwana.
Kuti uwedzere hupenyu hwesherufu yezvino chikafu uye kurongedza zvinodhaka, zvakawanda zvekurongedza zvinoshandisa multilayer co-extruded composite mafirimu.Mukushandisa, inonyatsoratidza maitiro akanaka ehutano hwehutano, kuchengetedza kutonhora, kuchengetedzwa kwekunaka, hupenyu hurefu hwesherufu, asidi uye alkali kuramba, kunyorova uye kutonhora kwekudzivirira, kupisa kwekushisa, kuderera kwekushisa uye kutonhora kwekuchengetedza kuchengetedza, uye simba rakakwirira kwazvo.
Nguva yekutumira: Kubvumbi-03-2023