Pulasitiki Processing ndi Kupanga, Njira ya Pulasitiki Extrusion

Plastic extrusion ndi njira yomwe pulasitiki imasungunuka ndikupanga mawonekedwe osalekeza.Njirayi imagwiritsidwa ntchito popanga zinthu monga chitoliro, mipanda, machubu, kutsekereza waya, mafelemu a zenera, ndi njanji…

Pulasitiki Processing ndi Kupanga

Pulasitiki ndi ma polima okhala ndi mamolekyu apamwamba kwambiri.Pulasitiki ndizofala muzinthu zambiri, kuyambira mkati mwagalimoto mpaka mapaipi.Kukonza ndi kupanga pulasitiki kumaphatikizapo njira zitatu zofunika: 1) kupereka makhalidwe ena ku ma resin apulasitiki okhala ndi zowonjezera za mankhwala, kuphatikizapo mafuta odzola, oletsa moto, opaka utoto ndi mapulasitiki;2) kusintha zinthu zopangira (magalasi apulasitiki, ma pellets, mapepala, madzimadzi kapena mapulasitiki opangidwa kale) kukhala mawonekedwe apakatikati kapena omaliza;ndi 3) kutsirizitsa mankhwala kupyolera mu kuumba / kupanga njira, monga jekeseni akamaumba kapena extrusion.Kumangirira jekeseni kumaphatikizapo kutenthetsa ma granules kapena ma pellets kuti akhale amadzimadzi komanso kukakamiza kubaya pulasitiki yamadzimadzi mu nkhungu yozizira kuti ikhazikike.Kutulutsa kumaphatikizapo kukankhira zinthu zapulasitiki zamadzimadzi kudzera mukufa kuti apange mitundu yayitali, yopitilira, monga mapaipi kapena machubu.

Njira Yoyambira ya Pulasitiki Extrusion

Njirayi imagwiritsa ntchito utomoni wa pulasitiki, womwe ndi timikanda tating'ono tapulasitiki, tomwe timathiridwa ndi hopper mu mbiya yotentha ya extruder.Kumeneko, zomangira zozungulira, zomwe nthawi zambiri zimatembenuka pa 120 rpm, zimakankhira utomoniwo kupyola mumbiya popeza nthawi zambiri umasungunuka paliponse kuchokera pa madigiri 392 kufika pa 527 madigiri Fahrenheit, kutengera polima utomoni wapangidwa.Pofuna kuchepetsa chiopsezo cha kutenthedwa kwa utomoni, kutentha kumawonjezeka pang'onopang'ono kuchokera kumbali imodzi ya mbiya kupita ku ina.

Kutsogolo kwa mbiya, pali chophimba chomwe utomoni wosungunuka umakankhidwiramo kuti uthandizire kuchotsa chilichonse chomwe chingakhale chaipitsa utomoniwo.Utoto wosungunuka wa thermoplastic ukadutsa pazenera, chubu cha chakudya chimatumiza utomoniwo kudzera pakufa kowoneka bwino, komwe kumapatsa malondawo mbiri yake.

Mawonekedwe kapena mbiriyi, imatha kupangidwa mosalekeza, kutalika kulikonse.

Pomaliza, mankhwala ayenera utakhazikika.Izi zimachitika kawirikawiri posamba madzi.Pulasitiki imasunga kutentha bwino, kotero kuti kuzizira kumatenga nthawi.Chifukwa cha izi, kusamba kwamadzi nthawi zambiri kumatsekedwa ndipo chopukutira chimagwiritsidwa ntchito kuti mankhwalawa asatayike pamene akuzizira.

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