Iyo yekuvharira kuita kweyekurongedza cosmetic bhodhoro chinhu chakakosha chinodiwa chekudzivirira basa rekurongedza.
Zvekurongedza zvezvizoro zvinogadzirwa zvakanyanya ne polymer zvinhu zvakaita se polyethylene (PE), asi kana zvasvika kune yakanaka barriers zvivakwa, polypropylene (PP), polyethylene terephthalate (PET), polyethylene- Vinyl doro copolymer (EVOH) chinhu chatinowanzo. taura.
Iyo microstructure yepurasitiki inoratidza kuti zvinhu zvepurasitiki "hazvisi kunyura kumhepo."tinogona kutarisa pamusoro pe PE uye PP zvinhu pasi pe-high-power electron microscope, uye tinogona kuona kuti kune maburi mune zvigadzirwa, izvo zvakakwana kutiita kuti tione kuti zvinhu zvepurasitiki ivo pachavo Iine imwe chiyero chekupinda.
Zvakakodzera here kuti isu tifunge nezve zvinovharidzira zvivakwa zvecosmeticpackage? Mhinduro ndihungu.Muchokwadi, mukuvandudza kwekurongedza kwechikafu, iyo yekuvharira pfuma yemidziyo yakakosha sechinhu chekuisa chisimbiso.Inobata basa mukuchengetedza kunaka, kutsva, kuravira uye hupenyu hwesherufu hwechikafu.Nekudaro, mukugadzirwa kwecosmetic package, iyo chisimbiso inowanzosimbiswa uku uchiregeredza iyo inovharira pfuma yepakeji.Ichi ndicho chikonzero mune chaiyo yekuvandudza zvizorwa, kirimu kana lotion zvigadzirwa zvine yakanaka yakazara yekurongedza sealability inosangana.Mushure menguva, zvakaonekwa kuti magadzirirwo ecream akawedzera uye akakora, uye aisatombogona kushandiswa zvachose;paivewo nemamwe maformula aive aine volatile organic active substances, ayo aipinda zvishoma nezvishoma kuburikidza nemidziyo yekurongedza, zvichikonzera kushaikwa kwezvinoenderana zvinoshanda zvinosanganisa.Naizvozvo, basa rekuvharira rekurongedza rinoda kutariswa mukugadzirwa kwecosmetic packaging kuitira kuve nechokwadi chekunzwa kweganda, kuchengetedza mhedzisiro uye nekuwedzera hupenyu hwesherufu yechigadzirwa.Kungonzwisisa nenzira kwayo tsananguro yezvipingamupinyi zvivakwa uye nzira yekupinza yezvinhu, uye kunzwisisa zvinopesvedzera zvinhu zvechivharo chepolymer. zvinhu, isu tinogona here kusarudza zvekurongedza zvinhu zvine akakodzera zvipingamupinyi zvivakwa zvinoenderana nezvinodiwa chaizvo mukugadzirwa kwezvizoro kurongedza, kuti uite zvakanaka.
Kune magwaro mumunda wekutsvagisa kwepolymer anoratidza kuti kuti zvinhu zvepolymer zvive zvakanaka zvinodzivirira zvivakwa, zvinofanirwa kunge zvine zvinotevera zvimiro:
1. Imwe mwero we polarity.Semuenzaniso, kune maatomu efluorine mucheni ye molecular, mapoka ehydroxyl uye mapoka ester;sezvinoratidzwa muTebhurari 1, iyo okisijeni barriers zvivakwa zvepolyvinyl doro nemapoka ehydroxyl pamativi emapoka emamorekuru ari nani zvakanyanya kupfuura polyethylene.
2. Iyo polymer cheni ine yakanyanya kuoma uye inert kuti ipinde;
3.Nekuda kweiyo symmetry, kurongeka, crystallization kana kutaridzika kwemamorekuru, polymer cheni ine kugona kurongedza zvakasimba;mamwe mapolymers anogona kuve nemadhigirii akasiyana ecrystallization.High crystallinity inogona kuunza zviri nani zvipingamupinyi zvivakwa.Tafura 2 pazasi inofananidza gasi inodzivirira zvivakwa zve polyolefins pamazinga akasiyana ekristallinity.Kazhinji, yakakwirira crystallinity ine yakaderera permeability.
Mamiriro epolymer molecular cheni ane pesvedzero huru pane ayo anodzivirira zvivakwa.Kune amorphous mapolymers, ma molecular chain orientation anogona kuderedza kupinda ne10-15%.Kune ma crystalline polymers, kuderedzwa kweanopfuura 50% kunogona kucherechedzwa.The orientation ine hukama hwakakosha nekufuridza kwebhodhoro.Naizvozvo, zvinonyanya kushanda kuvandudza kuvharidzira kuita kwebhodhoro nekudzora kutaridzika panguva yekuvhuvhuta kuumba maitiro pane kushandisa chinovharira chivharo kunze kwebhodhoro.Semuenzaniso, iyo okisijeni inodzivirira zvinhu zvePP, PS uye PET zvinhu mushure mekutariswa zvakavandudzwa zvakanyanya kana zvichienzaniswa neasina kutarisisa, uye elongation Iyo inovharira pfuma yePET ine chiyero che500% inosvika 50% yakakwirira kupfuura iyo isati yasvika.
4. Pane simba rekubatanidza kana kukwezva pakati pe polymer cheni neketani;
5.High girazi shanduko yekushisa
Kazhinji, mapolymers ane mutsara ane akareruka mamorekuru zvimiro anozove neyakajairwa stacking mamiriro uye yakakwirira chipingamupinyi simba, asi iyo huru cheni skeleton ine mabhesi makuru ekuyeresa, ayo anokonzeresa kusarongeka kurongeka uye kuderedzwa kwezvipingamupinyi.?
"Kusiyana kwekugadzirisa zvinhu uye kuumba maitiro kune zvakare kukanganisa pane zvipingamupinyi zvezvinhu.Sarudza mapolymer ane hunhu hwakasiyana uye shandisa nzira dzakakodzera dzekugadzirisa kuti uwane zvipingamupinyi zvekushandisa zvine hunyanzvi hwekuita.Semuenzaniso, zvipingamupinyi zveLLDPE neLDPE zvakaderera pane izvo zveHDPE.Mukushandiswa kwepombi dze-single-layer, LLDPE, LDPE uye HDPE inogona kusanganiswa panyama kuti ibudise hose package ine chimwe chipingamupinyi pfuma uye iri nyore kupisa chisimbiso;semuenzaniso, EVOH icopolymer ye ethylene / vinyl doro, inova cheni chimiro Iyo crystalline polymer inosanganisa yakanaka processability ye polyethylene uye yakanyanya kukwirisa gasi barriers zvimiro zvepolyvinyl doro.Kuvapo kwezvikamu zvepolar vinyl doro mucheni yemolecular inoita kuti ive yakanaka kune isiri-polar solvents senge mahydrocarbon.Barrier properties.Kuvapo kweasiri-polar ethylene zvikamu zvinogona kuvandudza zvipingamupinyi zvaro kune polar solvents semvura.Nekudaro, kune mapoka e-hydroxyl muchimiro chemolecular yeEVOH resins.EVOH resins ndeye hydrophilic uye hygroscopic.Mushure mekutora hunyoro, Iyo gasi inodzivirira kuita inokanganisika, saka zvinodikanwa kushandisa akawanda-layer tekinoroji kuputira iyo EVOH resin layer ine yakasimba mwando barriers resin senge polyolefin kugadzira inoumbwa zvinhu zvine yakanakisa inonzwisisika zvipingamupinyi zvivakwa.
kushandiswa kwezvinhu zvinodzivisa mucosmetic packaging
Parizvino, kushandiswa kwezvipingamupinyi zvekurongedza zvinhu mumunda wecosmetic kurongedza kuri munguva iri kukura yekushandiswa.Zvishandiso zvinogara zvichishandiswa mudzimba zvakakwirira zvinosanganisira aluminium foil, polyvinyl doro (PVA), ethylene-vinyl alcohol copolymer (EVOH), naironi (PA), Polyethylene terephthalate (PET), nezvimwewo. , uye PA nePET vane zvipingamupinyi zvakafanana uye zvinhu zvepakati-zvipingamupinyi.
Kune hose packaging cosmetics, kana chigadzirwa pachayo chine yakakwirira chipingamupinyi zvivakwa, anotevera matatu anotevera evhavha epurasitiki hoses anowanzoshandiswa.
1. Aluminium-plastic composite hose, chimiro chayo chinowanzoitwa PE / PE + EAA / AL / PE + EAA / PE, iyo yakagadzirwa nealuminium foil uye firimu repurasitiki kuburikidza ne-co-extrusion uye inosanganiswa mumashizha uye ipapo mapaipi.Iyo huru chipingamupinyi ndeyeChivhariso pfuma yealuminium foil layer inonyanya kuenderana nepinhole degree yealuminium foil.Kana ukobvu hwealuminium foil hunowedzera, iyo inovharira pfuma inowedzera;
2. Yese-plastic barrier composite hose, chimiro chayo chinowanzoitwa PE / PE / EVOH / PE / PE, yose inoumbwa nepurasitiki, uye bhanhire rayo rinowanzova EVOH kana oxide-plated PET.Sezvo kukora kweEVOH kunowedzera, chipingamupinyi chinowedzerwa;
3. Five-layer structure plastic co-extrusion hose, chimiro chayo PE/MAH-PE/EVOH/MAH-PE/PE, iyo inogadzirwa nemapurasitiki akawanda pamwe chete nescrusion extrusion panguva imwe chete kugadzira pepa, rinova. zvakare yakagadzirwa neEVOH Kune iyo barriers effect.
Zvemafirimu ekurongedza zvizorwa
Mafirimu akajairika anodzivirira anosanganisira co-extrusion barrier films, laminating films (dry-process composite, solvent-free composite, hot melt adhesive composite,