PE imatha kukonzedwa ndikupangidwa m'njira zosiyanasiyana.Kugwiritsa ntchito ethylene monga zinthu zazikulu zopangira, propylene, 1-butene ndi hexene monga copolymers, pansi pa zochita za catalysts, ntchito slurry polymerization kapena mpweya polymerization ndondomeko, ndi polima akamagwira kung'anima evaporation, kulekana, kuyanika ndi granulation kupeza yunifolomu particles wa mankhwala omalizidwa.Izi zikuphatikizapo njira monga pepala extrusion, filimu extrusion, chitoliro kapena mbiri extrusion, kuwomba akamaumba, jekeseni akamaumba, ndi mpukutu akamaumba.
Extrusion: The kalasi ntchito kupanga extrusion zambiri kusungunuka index zosakwana 1, MWD ndi sing'anga m'lifupi.Low MI pa processing zotsatira zabwino Sungunulani mphamvu.Magiredi okulirapo a MWD ndi oyenera kutulutsa chifukwa ali ndi kuchuluka kwa kupanga, kuthamanga kwapang'onopang'ono kwa kufa, komanso chizolowezi chotsika chosungunuka.
PE ili ndi ntchito zambiri zowonjezera monga mawaya, zingwe, hoses, machubu ndi mbiri.Kuyika kwa mapaipi kumayambira kumachubu achikasu agasi achilengedwe mpaka machubu akuda okhala ndi mipanda mainchesi 48 m'mimba mwake pamapaipi a mafakitale ndi matauni.Mipope yapakhoma ikuluikulu ikuluikulu ikukula mwachangu m'malo mwa ngalande zamphepo ndi ngalande zina za konkire.
1.Sheet ndi Thermoforming: Thermoforming lining of thermoforming cooler ambiri amtundu wa picnic amapangidwa ndi PE kuti ikhale yolimba, yopepuka komanso yolimba.Zida zina zopangira ma sheet ndi thermoforming ndi monga zotchingira, zomangira akasinja, mbale ndi ma beseni achitetezo, mabokosi otumizira ndi akasinja.Kutengera mfundo yakuti MDPE ndi yolimba, yosagonjetsedwa ndi dzimbiri ndi mankhwala, ndipo chiwerengero chachikulu cha mapepala omwe chikukula mofulumira ndi mulch kapena dziwe pansi pa Muri.
2.Blow molding: Kuposa gawo limodzi mwa magawo atatu a HDPE ogulitsidwa ku United States ndi ntchito zowomba.Izi zimachokera ku mabotolo okhala ndi bulichi, mafuta agalimoto, zotsukira, mkaka ndi madzi osungunuka mpaka mafiriji akulu, matanki amafuta amgalimoto ndi makatiriji a inki.Magulu owumba amawomba amakhala ndi magwiridwe antchito monga kusungunuka kwamphamvu, ES-CR ndi kulimba kofanana ndi komwe kumagwiritsidwa ntchito pamapepala ndi ma thermoforming, kotero magiredi ofanana angagwiritsidwe ntchito.
Jekeseni jekeseni amagwiritsidwa ntchito popanga zotengera zing'onozing'ono (zosakwana ma ola 16) zopangira mankhwala, ma shampoos, ndi zodzoladzola.Ubwino wa njirayi ndikuti mabotolo amapangidwa ndikuchotsa mabotolo okha, ndikuchotsa kufunikira kwa masitepe omaliza omwe nthawi zambiri amalumikizidwa ndi njira zowomba.Ngakhale magiredi ena opapatiza a MWD amagwiritsidwa ntchito kupititsa patsogolo kutha kwapamwamba, magiredi apakati mpaka otakata a MWD amagwiritsidwa ntchito nthawi zambiri.
3.Kupanga jekeseni: HDPE ili ndi ntchito zosawerengeka, kuchokera ku makapu a zakumwa zopyapyala zowonongeka mpaka ku zitini za 5-gsl zomwe zimadya gawo limodzi mwa magawo asanu a HDPE opangidwa m'nyumba.Magiredi a jakisoni nthawi zambiri amakhala ndi index yosungunuka ya 5 mpaka 10 ndipo amapereka magiredi otsika otsika kuti akhale olimba komanso magiredi apamwamba otuluka kuti azitha kuchita bwino.Ntchito zimaphatikizapo zofunika tsiku ndi tsiku ndi chakudya woonda khoma ma CD;Zitini zolimba za chakudya ndi zitini za penti;Kukaniza kwambiri kupsinjika kwa chilengedwe monga matanki amafuta a injini yaying'ono ndi zinyalala zokwana magaloni 90.
4.Rolling: Zida zogwiritsira ntchito njirayi nthawi zambiri zimaphwanyidwa kukhala zida za ufa zomwe zimatha kusungunuka ndikuyenda mumayendedwe otentha.Mitundu iwiri ya PE imagwiritsidwa ntchito pogubuduza: cholinga chambiri komanso cholumikizira.Zolinga zambiri za MDPE/HDPE nthawi zambiri zimakhala ndi kachulukidwe mumitundu ya 0.935 mpaka 0.945 g/CC yokhala ndi MWD yopapatiza, zomwe zimapangitsa kuti pakhale chinthu chokhudzidwa kwambiri chokhala ndi zopinga pang'ono komanso zolozera zosungunuka za 3-8.Magiredi apamwamba a MI nthawi zambiri sakhala oyenera chifukwa alibe kukana kukhudzidwa ndi kupsinjika kwa chilengedwe komwe kumafunikira pazinthu zowumbidwa.
Mapulogalamu ochita bwino kwambiri amapezerapo mwayi pazapadera zake zamakalasi ophatikizika ndi mankhwala.Magirediwa amayenda bwino mu gawo loyamba la kuumbika ndipo kenako amalumikizidwa kuti akweze kulimba kwawo kwamphamvu kwachilengedwe komanso kulimba mtima.Kukana kuvala ndi nyengo.Crosslinked polyethylene ndiyoyenera kwambiri zotengera zazikulu, kuchokera ku matanki 500 galoni omwe amagwiritsidwa ntchito kunyamula mankhwala osiyanasiyana kupita ku matanki osungirako zaulimi okwana magaloni 20,000.
5.Film: PE filimu processing zambiri utenga wamba kuwomba filimu processing kapena lathyathyathya extrusion processing njira.PE yambiri ndi yamakanema oonda ndipo itha kugwiritsidwa ntchito ndi Universal Low density PE (LDPE) kapena linear Low Density PE (LLDPE).Makanema amakanema a HDPE amagwiritsidwa ntchito nthawi zambiri pomwe zinthu zabwino kwambiri zolimba komanso kusasunthika kwabwino kumafunika.Mwachitsanzo, mafilimu a HDPE amagwiritsidwa ntchito kwambiri m'matumba a katundu, matumba a zakudya ndi zakudya.
Nthawi yotumiza: Nov-11-2022
