Itini yesiselo sePET esithengiswa ngobuninzi esivuleka lula
Inkqubo yemveliso yeItini yesiselo sePETyindlela yokusebenza eqhelekileyo, enamanyathelo amaninzi edibanisa ukulungiswa kwezinto, ukubumba, ukugqiba, kunye nolawulo lomgangatho. Apha ngezantsi kukho uhlalutyo oluneenkcukacha, oluthatha inyathelo ngenyathelo, oluquka ubuchwepheshe obuphambili kunye neendawo zokujonga umgangatho ezenzelwe ukusetyenziswa kokupakisha iziselo:
| Inqanaba leMveliso | Iinkqubo eziphambili | Iinkcukacha zobugcisa kunye neemfuno zoMgangatho | Injongo |
| 1. Ukulungiswa kwezinto eziluhlaza | -Ukukhetha kunye nokomisa izinto-Ukuxuba izinto ezidityanisiweyo (ukhetho) | -I-resin ye-PET eyi-Virgin: Iipellets ezikumgangatho wokutya ezihambelana nemigangatho ye-FDA/EFSA (akukho BPA, ii-phthalates).Ukuhlanganiswa kwe-rPET: Xuba ii-PET pellets ezisetyenzisiweyo (ezinomthamo ongama-30–100%) kunye ne-PET eyi-virgin ukuze uzinze; qinisekisa ukuba i-rPET icociwe ngokwemigangatho yokutya.Ukomisa: Iipellets zePET zomiswa kwi-120–160°C kangangeeyure ezi-4–6 ukunciphisa umxholo womswakama ongaphantsi kwe-0.02% (kuthintela ukwakheka kwamaqamza ngexesha lokubumba).Izongezo (ukhetho): Xuba iziqinisi ze-UV (kwiziselo ezibuthathaka ekukhanyeni) okanye ii-masterbatches ezinemibala (kwiithini ezingacacanga) zibe ziipellets. | Susa iziphene ezibangelwa kukufuma; qinisekisa ukhuseleko lwezinto kunye nokuhambelana kokutya. |
| 2. Ukubumba i-Injection Preform | -Ukubumba i-PET preforms ngenaliti-Ukuphola kunye nokucheba | -Inkqubo: Iipellets zePET ezomileyo ziyanyibilikiswa kuma-260–280°C kumatshini wokubumba ngenaliti, emva koko zifakwe kwiimolds zangaphambili (i-preform yimveliso encinci, emile okwetyhubhu yokuvavanya enentamo enomsonto).-Iimbumba: Iimolds ezichanekileyo ezineenombolo ze-cavity ezihambelana nomthamo wemveliso (umz., iimolds ezingama-96-cavity zemveliso ephezulu).Ukupholisa: Iipreforms zipholiswa ngokukhawuleza (imizuzwana eli-10–20) ngamanzi abandayo ukugcina imo izinzile.Ukusika: Susa i-flash engaphezulu kwiintamo zangaphambili ukuqinisekisa ubungakanani bomsonto obufanayo. | Velisa ii-preforms ezihambelanayo—isiseko se-PET sinokubumba kwaye siqine. |
| 3. Ukubumba Kokutsalwa Komoya (Inyathelo Eliphambili) | -Ukufudumeza kwangaphambili-Ukubumba kunye nokufutha-Ukupholisa kokugqibela | -UkufudumezaIi-preforms zifudunyezwa ukuya kuthi ga kwi-90–110°C (ubushushu bokutshintsha kweglasi yePET) kwi-oven ye-infrared; indawo yentamo ikhuselekile kubushushu ukuze kugcinwe ukuqina komsonto.Yolula: Intonga yokwelula ityhala i-preform eshushu ngokuthe nkqo ukuya kuthi ga kubude bayo bokuqala obuphindwe kabini ukuya kathathu (iphucula ulungelelwaniso lweemolekyuli ukuze ibe namandla).Ukubumba ngesandi: Umoya oxinzelelweyo ophezulu (20–40 bar) ufakwa ukuze kwandiswe i-preform eyoluliweyo nxamnye nomngxuma we-can mold, yenze imo yokugqibela ye-can (esilinda, enciphileyo, okanye eyenziwe ngokwezifiso).-Ukupholisa: Isikhunta siyapholiswa ngamanzi ukuze siqine ingqayi yePET kwimizuzwana emi-2-5. | Yenza umzimba wokugqibela wekhava yePET enobukhulu obuchanekileyo, ukumelana noxinzelelo, kunye nokungafihlisi. |
| 4. Ukucubungula okwesibini kunye nokugqiba | -Ukusika nokususa iingxangxasi-Unyango lomphezulu (ukhetho)-Ukuprinta kunye nokulebhelisha-Indibano yesiciko | -Ukusika: Sika umphetho ongaphezulu wetini ube nobude obufanayo ukuze ufake isiciko.Unyango lomphezuluUnyango lweCorona (lonyusa uxinzelelo lomphezulu) ukuqinisekisa ukuba i-inki inamathela xa kuprintwa; okanye ufake i-matte/frosted coating kwiimveliso zexabiso eliphezulu.UkuprintaSebenzisa ii-inki ezikhuselekileyo ekutyeni, ezinokunyangwa yi-UV ukuze ufumane imizobo eneenkcukacha eziphezulu, iilogo, kunye nolwazi lokuthobela imithetho (umz., iilebhile ezinokuphinda zisetyenziswe, umbhalo weelwimi ezininzi).Indibano yesiciko: Ncamathisela iziphelo ezivuleka lula (EOE) okanye izivalo zezikrufu ezinokuphinda zivalwe—qinisekisa ukuba zitywinwa zingangeni moya ukuze zihlangabezane neemfuno zokuphelelwa lixesha kweziselo. | Phucula ubuhle, uphawu, kunye nokusebenza kakuhle; qinisekisa ukuba itini ikulungele ukuzaliswa. |
| 5. Ulawulo loMgangatho kunye noVavanyo | -Uvavanyo lobukhulu-Uvavanyo lokumelana noxinzelelo-Uvavanyo lokuvuza-Uvavanyo lokhuseleko lokutya | -Ukujonga ubungakanani: Qinisekisa ukuphakama kwetini, ububanzi, kunye nobukhulu bodonga (ukunyamezelana ± 0.1mm) ngeegeyiji ezizenzekelayo.-Uvavanyo loxinzelelo: Faka iitini kuxinzelelo lwangaphakathi lwebha ezi-3–4 (kwiziselo ezinekhabhoni) ukuqinisekisa ukuba akukho kuguquka okanye ukuqhekeka.Uvavanyo lokuvuzaSebenzisa izixhobo zokuvulela i-vacuum okanye i-helium ukuqinisekisa ukuba akukho moya ungangeniyo (kubalulekile ekuvuseleleni isiselo).Uvavanyo lokhuseleko lokutya: Vavanya ii-monomers ezisele, iintsimbi ezinzima, okanye ukufuduka kwe-microplastic (thobela imida ye-FDA/EFSA). | Susa iimveliso ezineziphene; qinisekisa ukuthotyelwa kwemigangatho yokhuseleko lokutya kunye nokupakisha. |
| 6. Ukupakisha kunye nokugcina impahla | -Ukuqokelela kunye nokubeka ndawonye-Ukubeka iipalethi kunye nokugcina | -UkwahlulahlulaIingqayi zipakishwa kwiingxowa zeplastiki okanye kwiibhokisi ukuze kuthintelwe ukukrweleka ngexesha lokuthuthwa.Ukubethela iipalethiSebenzisa iipalletizers ezizenzekelayo ukufaka iibhokisi; songa iipallets ngefilimu yokuzolula ukuze uzinze.Indawo yokugcina izinto: Gcina kwindawo yokugcina izinto eyomileyo nepholileyo (amaqondo obushushu ayi-15–25°C, ukufuma okungaphantsi kwama-60%) ukuze kuthintelwe ukubola kwezilwanyana zasekhaya. | Lungisa iitini ezigqityiweyo ukuze zithunyelwe kwiindawo zokuzalisa iziselo; gcina umgangatho wemveliso ngaphambi kokuba uyisebenzise. |
