Firimu repurasitiki rinosanganiswa ndiro rinoshandiswa zvakanyanya pakurongedza rinodzivirira kupetwa. Kupetwa nekupiswa inzira yakakosha yekurongedza chikafu chinopetwa nekupisa kwakanyanya. Zvisinei, hunhu hwemafirimu epurasitiki akabatanidzwa hunowanzo kuora mushure mekupiswa, zvichikonzera zvinhu zvekurongedza zvisina kukodzera. Chinyorwa chino chinoongorora matambudziko akajairika mushure mekubika mabhegi anopetwa nekupisa kwakanyanya, uye chinopa nzira dzavo dzekuedza mashandiro emuviri, vachitarisira kuve nekutungamira mukugadzirwa chaiko.
Mapaketi ekuisa zvinhu zvinodzivirira kupisa kwakanyanya imhando yekurongedza inowanzoshandiswa pakugadzira nyama, soya nezvimwe zvekudya zvakagadzirwa. Kazhinji zvinoiswa mu vacuum cleaner uye zvinogona kuchengetwa patembiricha yemumba mushure mekupiswa nekucheneswa patembiricha yepamusoro (100~135°C). Chikafu chakaiswa zvinhu zvinodzivirira kupisa chiri nyore kutakura, chakagadzirira kudyiwa mushure mekuvhura bhegi, chakachena uye chiri nyore kushandisa, uye chinogona kuchengetedza kunaka kwechikafu, saka chinofarirwa nevatengi. Zvichienderana nemaitiro ekubvisa kupisa uye zvinhu zvekurongedza, nguva yekushanda kwezvigadzirwa zvekuisa zvinhu zvinodzivirira kupisa inobva pahafu yegore kusvika kumakore maviri.
Maitiro ekurongedza chikafu chinodzokororwa anosanganisira kugadzira mabhegi, kuisa mumabhegi, kupukuta, kuvhara kupisa, kuongorora, kubika nekudziya, kuomesa nekutonhodza, uye kurongedza. Kubika nekudziya sterilization ndiyo nzira huru yemaitiro ese. Zvisinei, kana mabhegi ekurongedza akagadzirwa nezvinhu zvepolymer - mapurasitiki, kufamba kwecheni yemamorekuru kunowedzera mushure mekupiswa, uye hunhu hwezvinhu zvacho hunowanzo deredzwa kupisa. Chinyorwa chino chinoongorora matambudziko akajairika mushure mekubika mabhegi ekudzokororwa anodziya zvakanyanya, uye chinopa nzira dzavo dzekuedza mashandiro emuviri.
1. Kuongororwa kwematambudziko akajairika nemabhegi ekurongedza asingapindiri
Chikafu chinodziya zvakanyanya chinoputirwa uye chinopiswa pamwe chete nezvinhu zvekurongedza. Kuti chive nehunyanzvi hwepamusoro uye hunhu hwakanaka hwekudzivirira, kuputira kunodzivirira kudziya kunogadzirwa nezvinhu zvakasiyana-siyana zvepasi. Zvinhu zvinoshandiswa kazhinji zvinosanganisira PA, PET, AL uye CPP. Zvivakwa zvinoshandiswa kazhinji zvine zvikamu zviviri zvemafirimu akabatanidzwa, nemienzaniso inotevera (BOPA/CPP, PET/CPP), firimu rakabatanidzwa rine zvikamu zvitatu (senge PA/AL/CPP, PET/PA/CPP) uye firimu rakabatanidzwa rine zvikamu zvina (senge PET/PA/AL/CPP). Mukugadzirwa chaiko, matambudziko emhando yepamusoro anowanzoonekwa makwinya, mabhegi akapwanyika, kubuda kwemhepo uye kunhuwa mushure mekubika:
1). Kazhinji kune mhando nhatu dzekukwinya mumabhegi ekurongedza: makwinya akatwasuka kana akatwasuka kana asina kurongeka pachigadziko chekurongedza; makwinya nemakatsemuka pachikamu chimwe nechimwe chekusanganisa uye kusasimba zvakanaka; kupwanya kwechigadziko chekurongedza, uye kupwanya kwechikamu chekusanganisa nemamwe machira akapatsanurwa, ane mitsetse. Mabhegi akapwanyika akakamurwa kuita mhando mbiri: kuputika zvakananga uye kupwanya uye kuputika.
2). Kuparadzanisa zvinoreva chiitiko chekuti zvikamu zvemachira zvakasanganiswa zvinoparadzaniswa kubva kune mumwe nemumwe. Kuparadzanisa kushoma kunoratidzwa semaburi akafanana nemitsara muzvikamu zvakamanikidzwa zvemachira, uye simba rekukwesha rinodzikira, uye rinogona kutobvarurwa zvinyoro nyoro nemaoko. Muzviitiko zvakakomba, chikamu chemachira chakasanganiswa chinoparadzaniswa munzvimbo yakakura mushure mekubika. Kana chikamu chemachira chikaitika, kusimbiswa kwehunhu hwepanyama pakati pezvikamu zvemachira zvakasanganiswa zvemachira zvichanyangarika, uye hunhu hwepanyama nehunhu hwezvipingamupinyi zvichadzikira zvakanyanya, zvichiita kuti zvisakwanise kusangana nezvinodiwa zvenguva yesherufu, zvichikonzera kurasikirwa kukuru kubhizinesi.
3). Kubuda kwemhepo kushoma kunowanzova nenguva yakareba yekufukidzwa uye hazvisi nyore kuona panguva yekubika. Munguva yekutenderera kwechigadzirwa nekuchengetwa kwacho, mwero wevacuum wechigadzirwa unoderera uye mweya unooneka unoonekwa mupakeji. Nokudaro, dambudziko iri remhando rinowanzo sanganisira huwandu hwakawanda hwezvigadzirwa. Zvigadzirwa zvine simba guru. Kubuda kwemhepo kunoenderana zvakanyanya nekusasimba kwekupisa uye kusakwanisa kupinza zvakanaka bhegi rekutiza.
4). Kunhuhwa mushure mekubika idambudziko rinowanzoitika. Kunhuhwa kunoshamisa kunoonekwa mushure mekubika kunoenderana nekuwanda kwezvinyungudutswa muzvinhu zvekurongedza kana kusarudzwa kwezvinhu zvisina kunaka. Kana firimu rePE richishandiswa sechikamu chekuvhara mukati memabhegi ekubikira anodziya zvakanyanya pamusoro pe120°, firimu rePE rinowanzo kunhuhwa kana tembiricha yakakwira. Saka, RCPP inowanzo sarudzwa sechikamu chemukati chemabhegi ekubikira anodziya zvakanyanya.
2. Nzira dzekuedza hunhu hwepakeji inodzivirira kudzongonyedzwa
Zvinhu zvinokonzera matambudziko emhando yepamusoro ekurongedza kusingapindi tambo zvakaoma uye zvinosanganisira zvinhu zvakawanda zvakaita sezvinhu zvakasanganiswa, zvinonamira, inki, kudzora maitiro ekugadzira zvinhu zvakasanganiswa uye mabhegi, uye maitiro ekugadzirisa. Kuti uve nechokwadi chekuti kurongedza kwakanaka uye kuti chikafu chigare kwenguva yakareba sei, zvakakosha kuita bvunzo dzekudzivirira kubika pazvinhu zvekurongedza.
Mutemo wenyika unoshanda kumabhegi ekurongedza asingapindi muropa ndewe GB/T10004-2008 "Plastic Composite Film for Packaging, Bag Dry Lamination, Extrusion Lamination", iyo yakavakirwa paJIS Z 1707-1997 "Misimboti Yese Yemafirimu ePurasitiki Ekupakira Chikafu" Yakagadzirwa kutsiva GB/T 10004-1998 "Retort Resistant Composite Films and Bags" uye GB/T10005-1998 "Biaxially Oriented Polypropylene Film/Low Density Polyethylene Composite Films and Bags". GB/T 10004-2008 inosanganisira zvinhu zvakasiyana-siyana zvemuviri uye zviratidzo zve solvent residue zvemafirimu nemabhegi asingapindi muropa, uye inoda kuti mabhegi ekurongedza asingapindi muropa aongororwe kuti aone kana aine resistance yekupisa kwakanyanya. Nzira yacho ndeyekuzadza mabhegi ekurongedza asingapindi mvura ne4% acetic acid, 1% sodium sulfide, 5% sodium chloride nemafuta emuriwo, wozobvisa mvura wovhara, wopisa woisa mupoto yekubikira ine pressure yakakwira pa121°C kwemaminitsi makumi mana, wozotonhodza uku pressure yacho isingachinji. Zvadaro chitarisiko chayo, simba rayo rekudhonza, kureba, simba rekukwesha uye simba rekuvhara kupisa zvinoedzwa, uye chiyero chekuderera chinoshandiswa kuiongorora. Fomura yacho ndeiyi:
R=（AB）/A×100
Mufomura, R inhamba yekuderera (%) kwezvinhu zvakaedzwa, A inhamba yeavhareji yezvinhu zvakaedzwa zvisati zvaitwa bvunzo yepakati inopikisa kupisa kwakanyanya; B inhamba yeavhareji yezvinhu zvakaedzwa mushure mebvunzo yepakati inopikisa kupisa kwakanyanya. Zvinodiwa pakushanda ndeizvi: "Mushure mebvunzo yekudzivirira kupisa kwakanyanya, zvigadzirwa zvine tembiricha yekushandira ye80°C kana kupfuura hazvifanirwe kuve nekubvisa dhayamita, kukuvara, deformation iri pachena mukati kana kunze kwebhegi, uye kudzikira kwesimba rekukwenya, simba rekudhonza, kumanikidzwa kwemazita panguva yekuzorora, uye simba rekuvhara kupisa. Mwero wacho unofanirwa kuva ≤30%".
3. Kuedzwa kwehunhu hwemabhegi ekurongedza asingapindiri
Kuedza chaiko pamuchina kunogona kunyatsoona mashandiro ese ekurongedza kusingapindi muropa. Zvisinei, nzira iyi haitore nguva chete, asi inoganhurirwawo nehurongwa hwekugadzira nehuwandu hwebvunzo. Haishande zvakanaka, marara akawanda, uye inodhura zvakanyanya. Kuburikidza nebvunzo yekudzora kuona hunhu hwemuviri hwakadai sehunhu hwekudhonza, simba rekubvisa mavanga, simba rekupisa chisimbiso usati watanga uye wapedza, hunhu hwehunhu hwebhegi rekudzora hunogona kuongororwa zvakakwana. Miedzo yekubika inowanzo shandisa mhando mbiri dzezviri mukati chaimo nezvinhu zvakaedzwa. Muedzo wekubika uchishandisa zviri mukati chaimo unogona kuva pedyo nemamiriro chaiwo ekugadzira uye unogona kudzivirira kurongedza kusina kukodzera kuti kupinde mumutsara wekugadzira muzvikamu. Kune mafekitori ezvinhu zvekurongedza, masimulants anoshandiswa kuyedza kupokana kwezvinhu zvekurongedza panguva yekugadzira uye usati wachengeta. Kuedza mashandiro ekubika kunoshanda uye kunoshanda. Munyori anotanga nzira yekuedza mashandiro emuviri emabhegi ekurongedza anodzivirira kuponda nekuzadza nezvinwiwa zvekufananidzira zvekudya kubva kuvagadziri vatatu vakasiyana uye kuita bvunzo dzekufashaira nekubikira zvakateerana. Maitiro ekuyedza ndeekuti:
1). Bvunzo yekubika
Zvishandiso: Hari yekubikira yakachengeteka uye ine hungwaru inodzvanywa nemusoro inodziya, HST-H3 heat seal tester
Matanho ekuyedza: Isa 4% acetic acid mubhegi re retort kusvika pazvikamu zviviri kubva muzvitatu zvehuwandu. Chenjerera kuti usasvibise chisimbiso, kuitira kuti usakanganise kukurumidza kwechisimbiso. Mushure mekuzadza, vhara mabhegi ekubikisa neHST-H3, uye gadzirirai sampuro gumi nembiri. Pakuvhara, mweya uri mubhegi unofanira kupedzwa zvakanyanya sezvinobvira kudzivirira kufutunuka kwemhepo panguva yekubika kuti isakanganise mhedzisiro yebvunzo.
Isa sampuro yakavharwa mupoto yekubikira kuti utange bvunzo. Isa tembiricha yekubikira pa121°C, nguva yekubikira pamaminitsi makumi mana, pisa sampuro 6, wobva wafashaidza sampuro 6. Panguva yekuedzwa kwekubika, nyatsoteerera shanduko dziri mumhepo netembiricha mupoto yekubikira kuti uve nechokwadi chekuti tembiricha netembiricha zviri mukati menguva yakatarwa.
Kana bvunzo yapera, tonhodza kusvika patembiricha yemumba, ibudise woona kana paine mabhegi akatyoka, makwinya, delamination, nezvimwewo. Mushure mebvunzo, pamusoro pesampuli 1# ne2# pakanga pakanyatsonaka mushure mekubika uye pakanga pasina delamination. Pamusoro pesampuli 3# pakanga pasina kunyatsonaka mushure mekubika, uye mipendero yakanga yakakombama kusvika padanho rakasiyana.
2). Kuenzanisa kwehunhu hwekudhonza
Tora mabhegi ekurongedza usati wabika uye wapedza kubika, cheka sampuli shanu dze rectangular dze 15mm×150mm munzira yakachinjika uye 150mm munzira yakachinjika, wodzigadzirisa kwemaawa mana munzvimbo ine 23±2℃ uye 50±10%RH. Muchina wekuyedza weXLW (PC) wakangwara we electronic tensile wakashandiswa kuyedza simba rekutyoka uye kureba pakutyoka pasi pe 200mm/min.
3). Kuedza kubvisa tsvina
Zvichienderana nenzira A yeGB 8808-1988 "Nzira Yekuyedza Kubvisa Mapundu Yezvinhu Zvakapfava zvePurasitiki", cheka sampuro ine upamhi hwe15±0.1mm uye kureba kwe150mm. Tora sampuro shanu imwe neimwe munzira dzakatwasuka uye dzakatwasuka. Bvisa jira recomposite riri munzira yekureba kwesampuro, riise mumuchina weXLW (PC) intelligent electronic tensile testing, uye edza simba rekudzima mapundu pa300mm/min.
4). Kuedza simba rekuvharira kupisa
Sekureva kweGB/T 2358-1998 “Nzira Yekuyedza Simba Rekuvhara Mafirimu Epurasitiki”, cheka sampuro ine upamhi hwe15mm pachikamu chekuvhara kupisa chesample, woivhura pa180°, wobva wasunga magumo ese esample paXLW (PC) intelligent. Pamuchina wekuyedza we electronic tensile, mutoro wepamusoro unoedzwa nekumhanya kwe300mm/min, uye mwero wekudonha unoverengerwa uchishandisa fomura ye dielectric resistance high temperature muGB/T 10004-2008.
Pfupisa
Zvekudya zvakaputirwa zvinoramba kubikwa zviri kufarirwa nevatengi nekuda kwekuti zviri nyore kudya nekuchengetedza. Kuti zvirambe zvakanaka zviri mukati uye kudzivirira kuti chikafu chisaora, nhanho yega yega yekugadzira mabhegi ekubika anopisa inofanira kutariswa zvakanyanya uye kudzorwa zvine mwero.
1. Mabhegi ekubikisa anodzivirira kupisa kwakanyanya anofanira kugadzirwa nezvinhu zvakakodzera zvichienderana nezviri mukati uye maitiro ekugadzira. Semuenzaniso, CPP inowanzo sarudzwa sechikamu chemukati chekuvhara mabhegi ekubikisa anodzivirira kupisa kwakanyanya; kana mabhegi ekuputira ane AL layers achishandiswa kuputira zviri mukati meacid nealkaline, PA composite layer inofanira kuwedzerwa pakati peAL neCPP kuti iwedzere kuramba acid nealkaline permeability; chikamu chimwe nechimwe checomposite Kudzikira kwekupisa kunofanirwa kunge kwakafanana kana kwakafanana kudzivirira kupetana kana kutoparadzana kwezvinhu mushure mekubika nekuda kwekusaenderana zvakanaka kwehunhu hwekudzikira kwekupisa.
2. Kudzora zvine mwero maitiro ekubatanidza. Mabhegi ekudzivirira kupisa kwakanyanya anoshandisa nzira yakaoma yekubatanidza. Mukugadzira firimu rekudzivirira kupisa, zvakakosha kusarudza namatidziro yakakodzera uye nzira yakanaka yekubatanidza, uye kudzora mamiriro ekugadzirisa zvine mwero kuti ive nechokwadi chekuti chinhu chikuru chenamatidziro nechinhu chinogadzirisa kupisa zvinopindura zvizere.
3. Kudzivirira kupisa kwakanyanya ndiyo nzira yakanyanya kuoma pakurongedza mabhegi ekudzoreredza kupisa kwakanyanya. Kuti kuderedze kuitika kwematambudziko emhando yebatch, mabhegi ekudzoreredza kupisa kwakanyanya anofanira kuongororwa uye kuongororwa zvichienderana nemamiriro chaiwo ekugadzira usati washandisa uye panguva yekugadzira. Tarisa kana chitarisiko chepakeji mushure mekubika chakati sandara, chakakwenya, chakatsvuka, chakaremara, kana paine kucheka kana kubuda kwemvura, kana mwero wekuderera kwehunhu hwemuviri (hunhu hwekudhonza, simba reganda, simba rekuvhara kupisa) zvichizadzisa zvinodiwa, nezvimwewo.
Nguva yekutumira: Ndira-18-2024
