Pulasitiki extrusion ikugwiritsidwa ntchito pafupipafupi m'makampani apulasitiki amasiku ano chifukwa imapezeka mosavuta komanso yosavuta kugwiritsa ntchito.Dongosolo la pulasitiki la extrusion limaphatikizapo kusungunula zinthu zapulasitiki, kuzikakamiza kukhala kufa kuti ziwonekere mosalekeza, ndikuzidula mpaka kutalika.Njirayi ndi yabwino kusankha ntchito zomwe zimafuna chomaliza chokhala ndi gawo lokhazikika.Kutsika mtengo komanso mitengo yokwera kwambiri yopangira zinthu kumapangitsa kukhala kusankha kofala kwa zinthu monga mapaipi, mapepala apulasitiki, kuvula nyengo, kutsekereza waya ndi tepi yomatira.
Pulasitiki Extrusion Supplies
Asanayambe ndondomeko pulasitiki extrusion, makina oyenera ndi katundu ayenera analandira, makamaka pulasitiki extruder makina.Chipangizochi ndi makina osavuta omwe amathandizira kutulutsa kuchokera koyambira mpaka kumapeto.Zigawo zazikulu za pulasitiki extruder monga hopper, mbiya, screw drive ndi screw drive motor.
Chigawo chachiwiri chofunika kwambiri ndi yaiwisi thermoplastic zinthu zopangira extrusion.Ntchito zambiri za extrusion zimadalira pulasitiki ya utomoni (mikanda yaying'ono yolimba) kuti ilole kutsitsa kosavuta komanso nthawi yosungunuka mwachangu.Zida zapulasitiki zomwe zimagwiritsidwa ntchito popanga extrusion zimaphatikizapo polystyrene (HIPS), PVC, polyethylene, polypropylene, ndi ABS.
Chigawo chomaliza chofunikira pa pulasitiki extrusion ndi kufa.Chovalacho chimakhala ngati nkhungu ya pulasitiki-mu pulasitiki extrusion, kufa kumalola ngakhale kutuluka kwa pulasitiki yosungunuka.Imafa iyenera kupangidwa mwachizolowezi ndipo ingafunike nthawi yowonjezerapo isanayambe kupanga.
Zapadera Pulasitiki Extrusion Njira
Ntchito zambiri zimayitanitsa njira zapadera za extrusion kuti mupeze zotsatira zokwanira kapena kufulumizitsa ntchito yopanga.Njira zodziwika bwino za extrusion ndizo:
●Kuwombera filimu extrusion:Zomwe zimagwiritsidwa ntchito popanga mafilimu apulasitiki apulasitiki monga golosale ndi zikwama zosungiramo zakudya Zomwe zimafa panthawiyi zimakhala ndi mawonekedwe oongoka, ozungulira omwe amakokera pulasitiki yosungunuka m'mwamba pamene imapanga ndikuzizira.
●Co-extrusion:Zigawo zingapo zimatulutsidwa nthawi imodzi.Awiri kapena kuposerapo extruder kudyetsa mitundu yosiyanasiyana ya pulasitiki mu umodzi extrusion mutu.
●Kuposa jekete:Extrusion imagwiritsidwa ntchito kutikita chinthu mu zokutira pulasitiki zoteteza.Waya wakunja ndi jekete la chingwe ndiye njira yomwe imagwiritsidwa ntchito kwambiri pajacketing.
●Tubing extrusion:Zofanana ndi extrusion yachikhalidwe, kupatula kufa kumaphatikizapo mapini amkati kapena mandrels kuti athandizire kupanga zida zapulasitiki zopanda kanthu.
Njira Yoyambira ya Plastic Extrusion
Njira yotulutsa pulasitiki imayamba ndikuyika utomoni waiwisi mu hopper ya extruder.Ngati utomoni ulibe zowonjezera zofunikira pakugwiritsa ntchito (monga zoletsa UV, anti-oxidants, kapena zopaka utoto), ndiye amawonjezedwa ku hopper.Ikakhazikika, utomoniwo nthawi zambiri umadyetsedwa ndi mphamvu yokoka kudzera pakhosi la hopper mpaka mumbiya ya extruder.M'kati mwa mbiyayo muli zomangira zazitali, zozungulira zomwe zimadyetsa utomoni kutsogolo kwa mbiya kupita kukufa.
Pamene utomoni ukuyenda mkati mwa mbiya, umakhala wotentha kwambiri mpaka utayamba kusungunuka.Kutengera ndi mtundu wa thermoplastic, kutentha kwa migolo kumatha kukhala pakati pa 400 ndi 530 degrees Fahrenheit.Ma extruder ambiri amakhala ndi mbiya yomwe imawonjezeka pang'onopang'ono kutentha kuchokera kumapeto mpaka ku chitoliro cha chakudya kuti athe kusungunuka pang'onopang'ono ndikuchepetsa kuthekera kwa kuwonongeka kwa pulasitiki.
Pulasitiki yosungunuka ikafika kumapeto kwa mbiya, imakanikizidwa kudzera pazenera ndikulowetsedwa mu chitoliro cha chakudya chomwe chimatsogolera kufa.Chophimbacho, cholimbikitsidwa ndi mbale yosweka chifukwa cha kupsyinjika kwakukulu mu mbiya, chimathandiza kuchotsa zonyansa zomwe zingakhalepo mu pulasitiki yosungunuka.Kuchuluka kwa chinsalu, chiwerengero cha zowonetsera, ndi zinthu zina zingathe kusinthidwa mpaka kusungunuka kwa yunifolomu kumachitika chifukwa cha kuchuluka kwa mphamvu yakumbuyo.
Ikalowa m'chitoliro cha chakudya, chitsulo chosungunulacho chimadyetsedwa m'bowo, momwe chimazizira ndi kuuma.Kuti kuzizirako kufulumire, pulasitiki yomwe yangopangidwa kumene imalandira madzi osamba osindikizidwa.Pankhani ya ma extrusions apulasitiki, mipukutu yozizira imalowa m'malo osamba madzi.
Nthawi yotumiza: Oct-25-2021
