Plastic composite firimu chinhu chinowanzo shandiswa kurongedza zvinhu zve retort-resistant kurongedza. Kudzorera uye kupisa sterilization inzira yakakosha yekurongedza chikafu chepamusoro-tembiricha chinodzoreredza. Nekudaro, izvo zvemuviri zvemafirimu akaumbwa epurasitiki zvinotapukira mukuora kwekupisa mushure mekupisa, zvichikonzera zvinhu zvekurongedza zvisina kukodzera. Ichi chinyorwa chinoongorora matambudziko akajairika mushure mekubika mabhegi ekudzoreredza epamusoro-tembiricha, uye inosuma maitiro avo ekuyedza maitiro emuviri, vachitarisira kuve neinotungamira kukosha kwekugadzirwa chaiko.
High-tembiricha-inodzivirira retort yekurongedza pouches ifomu yekurongedza inowanzoshandiswa nyama, soya zvigadzirwa uye chimwe chakagadzirirwa chikafu chikafu. Iyo inowanzo vacuum yakarongedzerwa uye inogona kuchengetwa mukamuri tembiricha mushure mekupiswa uye sterilized pakupisa kwakanyanya (100 ~ 135 ° C). Chikafu chisingachinjiki pasuru chiri nyore kutakura, chagadzirira kudya mushure mekuvhura bhegi, zvine hutsanana uye zviri nyore, uye chinokwanisa kuchengetedza kunaka kwechikafu, saka chinodiwa zvakanyanya nevatengi. Zvichienderana nemaitiro ekuita sterilization uye zvekurongedza zvinhu, hupenyu hwesherufu hwezvinhu zvinodzoreredza-resistant kurongedza zvigadzirwa zvinobva pahafu yegore kusvika makore maviri.
Iyo yekurongedza nzira yekudzoreredza chikafu kugadzira mabhegi, kubhegi, kupukuta, kupisa chisimbiso, kuongorora, kubika uye kupisa sterilization, kuomesa uye kutonhora, uye kurongedza. Kubika nekudziya sterilization ndiyo musimboti wekuita kwese. Nekudaro, kana mabhegi ekurongedza akagadzirwa nemidziyo yepolymer - mapurasitiki, iyo molecular cheni kufamba kunowedzera mushure mekupisa, uye chimiro chechimiro chechinhu chinotarirwa nekupisa kwekupisa. Ichi chinyorwa chinoongorora matambudziko akajairika mushure mekubika mabhegi ekudzoreredza epamusoro-tembiricha, uye anosuma maitiro avo ekuedza maitiro emuviri.
1. Ongororo yezvinetso zvakajairika ne retort-resistant packaging mabhegi
Chikafu chinodzoreredzwa chepamusoro-tembiricha chinoiswa pasuru uye chobva chadziiswa uye kucheneswa pamwe chete nezvinhu zvekurongedza. Kuti uwane yakakwira zvivakwa zvemuviri uye yakanaka inodzivirira zvivakwa, retort-resistant kurongedza inogadzirwa neyakasiyana-siyana yepasi zvinhu. Zvinowanzoshandiswa zvinhu zvinosanganisira PA, PET, AL uye CPP. Zvimiro zvinogara zvichishandiswa zvine zvikamu zviviri zvemafirimu akaumbwa, aine mienzaniso inotevera (BOPA/CPP, PET/CPP), firimu rematatu-layer composite (senge PA/AL/CPP, PET/PA/CPP) uye mana-layer composite firimu. (zvakadai sePET/PA/AL/CPP). Mukugadzira chaiko, matambudziko akajairika emhando makwinya, mabhegi akatyoka, kubuda kwemhepo uye kunhuwa mushure mekubika:
1). Pane kazhinji nzira nhatu dzekuunyana mumabhegi ekurongedza: akachinjika kana kuti akasimukira kana kusajairika wrinkles pane yekurongedza base zvinhu; makwinya uye anotsemuka pane imwe neimwe inoumbwa layer uye yakashata flatness; shrinkage yekuputira base zvinhu, uye shrinkage yeiyo composite layer uye mamwe akaumbwa akaumbwa Akaparadzana, ane mitsetse. Mabhegi akaputsika akakamurwa kuva marudzi maviri: kuputika kwakananga uye kuunyana uye ipapo kuputika.
2) .Delamination inoreva chiitiko chekuti zvikamu zvinosanganiswa zvemidziyo yekurongedza zvakaparadzaniswa kubva kune mumwe. Kuderera kudiki kunoratidzwa senge mitsetse-kunge mabulges munzvimbo dzakatsikirirwa dzepakeji, uye simba rekupemha rinodzikiswa, uye rinogona kubvarurwa zvinyoro nyoro neruoko. Muzviitiko zvakakomba, iyo yekurongedza composite layer inoparadzaniswa munzvimbo yakakura mushure mekubika. Kana delamination ikaitika, iyo synergistic kusimbisa kwezvinhu zvemuviri pakati pezvikamu zvakaumbwa zvemidziyo yekurongedza zvichanyangarika, uye zvimiro zvemuviri uye zvipingamupinyi zvinodonha zvakanyanya, zvichiita kuti zvisaite kuzadzisa zvinodiwa zvehupenyu hwesherufu, kazhinji zvichikonzera kurasikirwa kukuru kune bhizinesi. .
3) Kudonha kwemhepo kudiki kune nguva yakati rebei uye haisi nyore kuona panguva yekubikira. Munguva yekutenderera kwechigadzirwa uye nguva yekuchengetedza, iyo vacuum dhigirii yechigadzirwa inoderera uye mhepo iri pachena inooneka mupakeji. Nokudaro, dambudziko iri rehutano rinowanzobatanidza nhamba yakawanda yezvigadzirwa. zvigadzirwa zvine simba rakakura. Kuitika kwekudonha kwemhepo kunoenderana zvakanyanya nekusasimba kupisa chisimbiso uye kushomeka kwekupokana kwebhegi retort.
4). Kunhuwa mushure mekubika idambudziko rakajairika. Iko kunhuhwirira kwakasarudzika kunoonekwa mushure mekubika kune hukama nekuwanda kwezvinonyungudutsa zvisaririra mumidziyo yekurongedza kana kusarudzwa kwezvinhu zvisina kunaka. Kana PE firimu rinoshandiswa sechisimbiso chemukati chekuvhara mabhegi ekupisa kwepamusoro-soro pamusoro pe120 °, firimu rePE rinowanzoita kunhuwa pakupisa kwakanyanya. Naizvozvo, RCPP inowanzo sarudzwa seyemukati yemukati yemabhegi ekupisa ekubikira.
2. Nzira dzekuedza dzezvinhu zvemuviri zve retort-resistant packaging
Izvo zvinhu zvinotungamira kumatambudziko emhando yekudzoreredza-resistant kurongedza zvakawoma uye zvinosanganisira zvinhu zvakawanda senge composite layer raw materials, adhesives, inki, composite uye bhegi kugadzira maitiro ekugadzirisa, uye retort maitiro. Kuti uve nechokwadi chekurongedza uye hupenyu hwepasherufu yechikafu, zvinodikanwa kuita bvunzo dzekudzivisa kubika pazvinhu zvekurongedza.
Chiyero chenyika chinoshanda kumabhegi ekutakurisa asingadzoreki ndeye GB/T10004-2008 "Plastic Composite Firimu rePackaging, Bag Dry Lamination, Extrusion Lamination", iyo yakavakirwa paJIS Z 1707-1997 "General Principles of Plastic Films for Food Packaging" Yakagadzirirwa kutsiva GB/T 10004-1998 "Retort Resistant Composite Mafirimu uye Mabhegi" uye GB/T10005-1998 "Biaxially Oriented Polypropylene Firimu/Low Density Polyethylene Composite Mafirimu uye Mabhegi". GB/T 10004-2008 inosanganisira zvakasiyana-siyana zvemuviri zvimiro uye zvinonyungudutsa zvisaririra zvemabhaisikopo ekurongedza asingadzoreki nemabhegi, uye inoda kuti mabhegi ekutakurisa asingadzoreki aongororwe kushivirira kwepamusoro media media. Iyo nzira ndeyekuzadza mabhegi ekurongedza asingadzoreki ane 4% acetic acid, 1% sodium sulfide, 5% sodium chloride nemafuta emuriwo, wozopedza nekusimbisa, kupisa uye kudzvanya muhari yekubikira yakanyanya pa121 ° C ye. 40 maminetsi, uye kutonhorera apo kumanikidza kunoramba kusingachinji. Ipapo chitarisiko chayo, kusimba kwesimba, kurebesa, kusvuura simba uye kusimba kwekusimbisa kupisa kunoedzwa, uye mwero wekuderera unoshandiswa kuuongorora. Iyo formula ndeyotevera:
R= (AB)/A×100
Mune fomula, R ndiyo inodzikira mwero (%) yezvinhu zvakaedzwa, A ndiyo avhareji kukosha kwezvinhu zvakaedzwa pamberi peyepamusoro-tembiricha inodzivirira yepakati bvunzo; B ndiyo avhareji kukosha kwezvinhu zvakaedzwa mushure meyepamusoro-tembiricha inodzivirira yepakati bvunzo. Zvinodiwa zvekuita ndezvekuti: “Mushure mekuyedzwa kwepamusoro-tembiricha yekudzivirira dielectric, zvigadzirwa zvine tembiricha yebasa ye80 ° C kana pamusoro hazvifanirwe kunge zvisina delamination, kukuvara, deformation iri pachena mukati kana kunze kwebhegi, uye kudzikira kwesimba rekupeuka, kudhonza- kudzima simba, kuomarara kwezita panguva yekuzorora, uye kupisa kuvharisa simba. Mutengo unofanirwa kuva ≤30% ”.
3. Kuedzwa kwezvinhu zvemuviri zve retort-resistant mabhegi ekurongedza
Iwo chaiwo bvunzo pamushini unogona kunyatsoona kuita kwese kweiyo retort-resistant kurongedza. Nekudaro, iyi nzira haingotore nguva chete, asi zvakare inoganhurwa nehurongwa hwekugadzira uye huwandu hwebvunzo. Iine kusashanda zvakanaka, kuraswa kukuru, uye kudhura kwakanyanya. Kuburikidza neiyo retort bvunzo yekuona zvimiro zvemuviri senge tensile zvivakwa, svuura simba, kupisa seal simba pamberi uye mushure mekudzoreredza, iyo retort kuramba mhando yebhegi rekudzoreredza inogona kutongwa zvizere. Kubikira bvunzo kunowanzo shandisa marudzi maviri ezviri mukati chaiwo uye zvinhu zvakateedzerwa. Muedzo wekubika uchishandisa zvirimo chaiwo unogona kunge uri padyo sezvinobvira kune chaiyo yekugadzira mamiriro uye unogona kudzivirira zvinobudirira kurongedza kusinga kwanise kupinda mumutsara wekugadzira mumabhechi. Kurongedza zvinhu mafekitori, simulants anoshandiswa kuyedza kupokana kwezvinhu zvekurongedza panguva yekugadzira uye pamberi pekuchengetedza. Kuedza kubika kuita kunonyanya kushanda uye kushanda. Munyori anosuma maitiro ekuyedza maitiro ekudzoreredza-anodzivirira kurongedza mabhegi nekuazadza nezvikafu zvekunyepedzera zvinwiwa kubva kune vatatu vagadziri vakasiyana uye kuita bvunzo dzekupisa nekubikira zvakateerana. The test process ndeiyi inotevera:
1). Kubika bvunzo
Zvishandiso: Yakachengeteka uye yakangwara kumashure-kudzvanya yakakwira-tembiricha yekubikira poto, HST-H3 kupisa seal tester
Matanho ekuedza: Nyatsoisa 4% acetic acid mubhegi rekudzoreredza kusvika pazvikamu zviviri muzvitatu zvevhoriyamu. Chenjerera kuti usasvibisa chisimbiso, kuitira kuti usakanganisa kukurumidza kuvhara. Mushure mekuzadza, simbisa mabhegi ekubikira neHST-H3, uye gadzirira sampuli gumi nemaviri. Pakuisa chisimbiso, mhepo iri mubhegi inofanira kupera zvakanyanya sezvinobvira kudzivirira kuwedzera kwemhepo panguva yekubika kubva pakukanganisa mhinduro dzebvunzo.
Isa sampu yakavharwa mupoto yekubikira kuti utange bvunzo. Isa tembiricha yekubikira kusvika 121 ° C, nguva yekubika kusvika 40 maminetsi, steam 6 samples, uye bika 6 samples. Munguva yekubikira bvunzo, nyatsoteerera kune shanduko yemhepo uye tembiricha mupoto yekubikira kuti uve nechokwadi chekuti tembiricha uye kudzvanywa kunochengetwa mukati meiyo yakatarwa.
Mushure mekunge bvunzo yapera, inotonhorera kusvika kukamuri tembiricha, ibudise kunze uye uone kana paine mabhegi akatyoka, wrinkles, delamination, nezvimwe. Mushure mebvunzo, nzvimbo dze1 # uye 2 # samples dzaive dzakatsetseka mushure mekubika uye pakanga pasina. delamination. Kumusoro kwe3# sampuro kwanga kusiri kutsetseka mushure mekubika, uye mipendero yaive yakamonyoroka kune akasiyana madhigirii.
2). Kuenzaniswa kwezvinhu zvinorema
Tora mabhegi ekurongedza usati wabika uye wapedza kubika, cheka 5 rectangular samples dze15mm×150mm munzira yakachinjika uye 150mm munzira yakareba, woaisa kwemaawa mana munzvimbo ye23±2℃ uye 50±10%RH. Iyo XLW (PC) yakangwara yemagetsi tensile yekuyedza muchina yakashandiswa kuyedza simba rekupwanya uye kureba panguva yekuzorora pasi pemamiriro e200mm/min.
3). Peel test
Zvinoenderana nenzira A yeGB 8808-1988 "Peel Test Method yeSoft Composite Plastic Materials", cheka sampuli nehupamhi hwe15±0.1mm uye kureba kwe150mm. Tora sampuli 5 imwe neimwe mune yakachinjika uye yakatwasuka nzira. Pre-pepeta dhizaini pahurefu hwesample, itakudza muXLW (PC) ine hungwaru yemagetsi tensile yekuyedza muchina, uye edza simba rekusvuura pa300mm/min.
4). Kupisa chisimbiso chesimba bvunzo
Zvinoenderana neGB/T 2358-1998 "Test Method for Heat Sealing Strength of Plastic Film Packaging Bags", cheka 15mm yakafara sampuli panzvimbo yekupisa yekuisa chisimbiso chesample, ivhure pa180 °, uye sunga migumo yese yesample pa. iyo XLW (PC) yakangwara Pamuchina wemagetsi tensile yekuyedza, iyo yakanyanya kuremerwa inoedzwa nekumhanya kwe300mm/min, uye chiyero chekudonha chinoverengerwa uchishandisa yakanyanya tembiricha kuramba dielectric formula muGB/T 10004-2008.
Pfupisa
Zvokudya zvakaputirwa zvisingadzoreki zviri kuwedzera kufarirwa nevatengi nekuda kwekureruka kwavo mukudya nekuchengeta. Kuti unyatso chengetedza kunaka kwezviri mukati uye kudzivirira chikafu kubva pakuipa, nhanho yega yega yemhando yepamusoro-yekushisa retort kugadzirwa kwebhegi inoda kunyatsotariswa uye kudzorwa zvine musoro.
1. Mabhegi ekubikira anodzivirira kupisa anofanirwa kugadzirwa nezvinhu zvakakodzera zvichienderana nezviri mukati uye maitiro ekugadzira. Semuenzaniso, CPP inowanzosarudzwa seyemukati yekuisa chisimbiso chepamusoro-tembiricha-inodzivirira kubika mabhegi; apo mabhegi ekurongedzerwa ane AL layers anoshandiswa kurongedza asidhi uye alkaline zviri mukati, iyo PA composite layer inofanira kuwedzerwa pakati peAL neCPP kuti iwedzere kuramba kune acid uye alkali permeability; imwe neimwe inosanganiswa layer Iko kupisa kupisa kunofanirwa kuenderana kana kufanana kudzivirira kuchinjika kana kunyange delamination yechinhu mushure mekubika nekuda kwekushata kuenderana kwekupisa shrinkage zvivakwa.
2. Kudzora zvine mutsindo maitiro emubatanidzwa. High tembiricha inodzivirira retort mabhegi anowanzo shandisa yakaoma komponeng nzira. Mukugadzirwa kweiyo retort firimu, zvinodikanwa kusarudza iyo yakakodzera yekunamatira uye yakanaka gluing maitiro, uye zvine hungwaru kudzora mamiriro ekurapa kuti ave nechokwadi chekuti mumiriri mukuru wekunamatira uye mumiririri wekurapa anoita zvizere.
3. High-temperature medium resistance ndiyo yakanyanya kuomesesa muitiro wepackaging process yehigh-temperature retort bags. Kuti uderedze kuitika kwematambudziko emhando yebatch, mabhegi emhando yepamusoro anofanirwa kudzokororwa kuongororwa uye kuongororwa zvichienderana nemamiriro chaiwo ekugadzira asati ashandiswa uye panguva yekugadzira. Tarisa uone kana kutaridzika kwepakeji mushure mekubikira kwakapfava, kwakaunyana, kune mablistered, kuremara, kana paine delamination kana kuvuza, kungave kuderera kwezvivakwa zvemuviri (tensile zvivakwa, peel simba, kupisa chisimbiso simba) inosangana nezvinodiwa, nezvimwe.
Nguva yekutumira: Jan-18-2024
