Hose, chinhu chinopakira chiri nyore uye chinodhura, chinoshandiswa zvakanyanya mumunda wemakemikari ezuva nezuva uye chinozivikanwa zvikuru. Hose yakanaka haingogone chete kuchengetedza zviri mukati, asiwo kuvandudza huwandu hwechigadzirwa, nokudaro ichiwana vatengi vakawanda kumakambani emakemikari ezuva nezuva. Saka, kumakambani emakemikari ezuva nezuva, maitiro ekusarudzamapombi epurasitiki emhando yepamusoroizvo zvakakodzera zvigadzirwa zvavo?
Kusarudzwa uye kunaka kwezvinhu ndizvo zvakakosha pakuona kuti mapombi akanaka, izvo zvinozokanganisa zvakananga kugadzirwa uye kushandiswa kwekupedzisira kwemapombi. Zvinhu zvemapombi epurasitiki zvinosanganisira polyethylene (yemuviri wechubhu nemusoro wechubhu), polypropylene (chubhu inofukidza), masterbatch, barrier resin, inki yekudhinda, varnish, nezvimwewo. Saka, kusarudzwa kwezvinhu chero chipi zvacho kuchakanganisa zvakananga kunaka kwepaipi. Zvisinei, kusarudzwa kwezvinhu zvinoenderanawo nezvinhu zvakaita sezvinodiwa nehutsanana, hunhu hwezvinodzivirira (zvinodiwa zveokisijeni, utsi hwemvura, kuchengetedza kunhuhwirira, nezvimwewo), uye kuramba makemikari.
Kusarudzwa kwemapombi: Chekutanga, zvinhu zvinoshandiswa zvinofanira kuzadzisa mitemo yehutsanana, uye zvinhu zvinokuvadza zvakaita sesimbi dzinorema uye zvinhu zvinopenya zvinofanira kudzorwa mukati mehuwandu hwakatarwa. Semuenzaniso, kumapombi anotumirwa kuUnited States, polyethylene (PE) nepolypropylene (PP) zvinoshandiswa zvinofanira kuzadzisa chiyero cheUS Food and Drug Administration (FDA) 21CFR117.1520.
Hunhu hwezvipingamupinyi zvezvinhu: Kana zviri mupakeji yemakambani emakemikari ezuva nezuva zviri zvimwe zvigadzirwa zvinonzwa zvakanyanya okisijeni (senge mamwe mafuta ekuchenesesa) kana hwema hwacho huchichinja-chinja (senge mafuta akakosha kana mamwe mafuta, acids, munyu nemamwe makemikari anoparadza), machubhu ane machubhu mashanu anofanira kushandiswa panguva ino. Nekuti kupenya kweokisijeni kwechubhu ine machubhu mashanu (polyethylene/adhesive resin/EVOH/adhesive resin/polyethylene) kuri 0.2-1.2 units, nepo kupenya kweokisijeni kwechubhu yakajairika yepolyethylene single-layer iri 150-300 units. Munguva yakati, mwero wekurasikirwa nehuremu kwechubhu ine machubhu maviri ine ethanol wakaderera kanoverengeka pane wechubhu ine machubhu maviri. Pamusoro pezvo, EVOH iethylene-vinyl alcohol copolymer ine hunhu hwakanaka hwezvipingamupinyi uye kuchengetedza kunhuhwirira (mhedzisiro yakanaka inowanikwa kana ukobvu hwacho huri 15-20 microns).
Kuoma kwezvinhu: Makambani emakemikari ezuva nezuva ane zvinodiwa zvakasiyana pakuoma kwemapombi, saka ungawana sei kuoma kwaunoda? Polyethylene inowanzoshandiswa mumapombi inonyanya kuve polyethylene yakaderera, polyethylene yakawanda, uye polyethylene yakaderera. Pakati pazvo, kuoma kwepolyethylene yakakura kuri nani pane kwepolyethylene yakaderera, saka kuoma kwaunoda kunogona kuwanikwa nekugadzirisa chiyero chepolyethylene yakawanda/polyethylene yakaderera.
Kusasimba kwezvinhu zvine makemikari: Polyethylene ine huwandu hwakanyanya hwemakemikari inosasimba zviri nani pane polyethylene ine huwandu hwakaderera.
Kusapindirana kwemamiriro ekunze kwezvinhu: Kuti udzore mashandiro epaipi kwenguva pfupi kana refu, zvinhu zvakaita sekutaridzika kwayo, kusapindirana kwesimba rekumanikidzwa/kudonha, simba rekuvharira, kusapindirana kwekumanikidzwa kwezvakatipoteredza (ESCR value), kunhuhwirira uye kurasikirwa nezvinhu zvinoshanda zvinofanirwa kufungwa nezvazvo.
Kusarudzwa kwemasterbatch: Masterbatch ine basa rakakosha mukudzora mhando yemapombi. Saka, pakusarudza masterbatch, makambani anoshandisa anofanira kufunga kana ichipararira zvakanaka, kusefa uye kugadzikana kwekupisa, kuramba mamiriro ekunze uye kuramba chigadzirwa. Pakati pazvo, kuramba chigadzirwa kwemasterbatch kwakakosha zvikuru panguva yekushandiswa kwemapombi. Kana masterbatch isingaenderane nechigadzirwa chayo, ruvara rwemasterbatch ruchapinda muchigadzirwa, uye mhedzisiro yacho yakakomba zvikuru. Saka, makambani emakemikari ezuva nezuva anofanira kuyedza kugadzikana kwezvigadzirwa zvitsva nemapombi (miedzo inokurumidza pasi pemamiriro akatarwa).
Mhando dzevarnish uye hunhu hwadzo: Varnish inoshandiswa pamapombi yakakamurwa kuva UV rudzi uye heat drying type, iyo inogona kukamurwa kuva pamusoro wakajeka uye pamusoro matte pakuonekwa. Varnish haingopi chete mhedzisiro yakanaka yekuona, asi inodzivirirawo zviri mukati uye ine mhedzisiro yakati yekudzivirira okisijeni, utsi hwemvura uye hwema. Kazhinji, varnish ye heat drying ine kunamira kwakanaka kune inotevera hot stamping uye silk screen printing, nepo UV varnish ine gloss iri nani. Makambani emakemikari ezuva nezuva anogona kusarudza varnish yakakodzera zvichienderana nehunhu hwezvigadzirwa zvavo. Pamusoro pezvo, varnish yakagadziriswa inofanira kunge yakanamatira zvakanaka, pamusoro wakatsetseka pasina maburi, inodzivirira kupeta, inodzivirira kupfeka, inodzivirira ngura, uye isina kusviba ruvara panguva yekuchengetera.
Zvinodiwa zvemuviri wechubhu/musoro wechubhu:
1. Pamusoro pemuviri wechubhu inofanira kunge yakatsetseka, isina mitsetse, mavanga, mitsetse, kana kuchembera. Muviri wechubhu unofanira kunge wakatwasuka uye usina kukotama. Ukobvu hwemadziro echubhu hunofanira kunge hwakafanana. Ukobvu hwemadziro echubhu, kureba kwechubhu, uye dhayamita zvinofanirwa kunge zviri mukati mehuwandu hwakatarwa;
2. Musoro wechubhu nemuviri wechubhu yepombi zvinofanira kunge zvakabatana zvakasimba, tambo yekubatanidza inofanira kunge yakachena uye yakanaka, uye hupamhi hunofanira kunge hwakafanana. Musoro wechubhu haufanirwe kukanganiswa mushure mekubatanidza;
3. Musoro wechubhu nechifukidziro chechubhu zvinofanira kuenderana zvakanaka, kupinda nekubuda zvakanaka, uye hapafanirwe kutsvedza mukati menguva yakatarwa, uye hapafanirwe kuva nemvura kana mhepo inobuda pakati pechubhu nechifukidziro;
Zvinodiwa pakudhinda: Kugadzira mapaipi emvura kunowanzo shandiswa kuprinta kwe-lithographic offset (OFFSET), uye inki yakawanda inoshandiswa yakaomeswa neUV, izvo zvinowanzo da kunamira kwakasimba uye kuramba ruvara rwayo. Ruvara rwekudhinda runofanira kunge rwuri mukati mehupamhi hwakatarwa, nzvimbo yekudhinda inofanira kunge yakarurama, kutsauka kunofanira kunge kuri mukati me0.2mm, uye fonti inofanira kunge yakazara uye yakajeka.
Zvinodiwa pamakepisi epurasitiki: Makepisi epurasitiki anowanzogadzirwa ne polypropylene (PP) injection molding. Makepisi epurasitiki emhando yepamusoro haafanire kunge asina mitsetse inooneka yekutsvedza uye inopenya, mitsetse yemold yakatsetseka, saizi chaiyo, uye inoenderana zvakanaka nemusoro wechubhu. Haafanire kukonzera kukuvara kwechimiro senge kutsemuka kana kutsemuka panguva yekushandiswa kwakajairika. Semuenzaniso, kana simba rekuvhura riri mukati menzvimbo, chivharo chekupfiga chinofanira kukwanisa kutsungirira mapete anopfuura 300 pasina kutsemuka.
Ndinotenda kuti kutanga kubva pane zvataurwa pamusoro apa, makambani mazhinji emakemikari ezuva nezuva anofanira kukwanisa kusarudza zvigadzirwa zvemapombi emhando yepamusoro.
Nguva yekutumira: Chikunguru-12-2024