ukadaulo wa PET wobwezerezedwanso pakupanga ulusi

Ngakhale magalasi anali chida chachikulu cha botolo m'zaka zapitazi, kuyambira kumapeto kwa zaka za m'ma 1980, PET yakhala ikukondedwa kwambiri ndi opanga ndi ogula.Mabotolo a "polyester" awa ali ndi mwayi wapadera wokhala wopepuka komanso wosasweka.Komabe, kupambana kumabweretsa zovuta zatsopano zokhudzana ndi kukonzanso kwapachaka kwa mabiliyoni a mabotolo otayidwa.
Kutembenuza mabotolo ogwiritsidwa ntchito kukhala zopangira kumafuna njira yayitali komanso yovuta.Zonse zimayamba ndi kutolera mabotolo ndikukankhira m'mabotolo.Pambuyo pake, mabala amatsegulidwa, osanjidwa ndikuphwanyidwa.Zotsatira zake zimatsukidwa (zozizira ndi zotentha) ndikusiyanitsidwa ndi polyolefin kuchokera ku chivindikiro ndi liner.Pambuyo poyanika ndikulekanitsa zitsulo, ma flakes amatha kuikidwa mu silos kapena matumba akuluakulu.Kuzungulira kwatsopano kumayamba.
Imodzi mwa njira zazikulu zopezerapolyester yobwezerezedwanso ndikupota kwa ulusi waufupi,zomwe zingagwiritsidwe ntchito, mwachitsanzo, popota, zodzaza nsalu kapena zopanda nsalu.Mapulogalamuwa amakhazikitsidwa bwino, ndi malaya aubweya ndi shawl ndi zitsanzo zabwino kwambiri.
Kuphatikiza apo, kusonkhanitsa ndi kukonzanso mabotolo apulasitiki kukuchulukirachulukira padziko lonse lapansi chifukwa cha zinthu zingapo.Chifukwa chake ndi nthawi yoti mufufuze njira zatsopano zogwiritsira ntchito PET zobwezerezedwanso.
Ulusi wa PET umapereka maubwino ambiri akagwiritsidwa ntchito m'makapeti, kuphatikiza kukana madontho ambiri, kuposa momwe amachitira ndi mankhwala PA BCF.Kuphatikiza apo, PET imatha kuumbidwa osasinthidwa utoto, pomwe PP sangathe.Ulusi wosa utoto ukhoza kupindika, kutenthedwa, kupakidwa utoto ndi kusokedwa, kapena kapeti yomalizidwa ikhoza kusindikizidwa.
Thekupanga filaments mosalekezakuchokera ku R-PET ndizovuta kwambiri kuposa kupanga ulusi waufupi.Mukupota kwa filament, ubwino wa ulusi umatsimikiziridwa ndi homogeneity ya zopangira.Ma flakes obwezeretsedwa ndi chinthu chosokoneza ndipo kupatuka kwakung'ono muubwino kungayambitse mawaya osweka kapena mawaya osweka.Komanso, kusiyana kwa mtundu wa flake kumatha kukhudza kuyamwa kwa utoto wa ulusi, zomwe zimapangitsa kuti pakhale mikwingwirima pamphasa yomalizidwa.
Ma flakes a P-PET otsukidwa amawumitsidwa ndikutsukidwa mu riyakitala, amasungunuka mu extruder kenako ndikudutsa musefa yayikulu yamitundu yosiyanasiyana.Kusungunuka kwapamwamba kwambiri kumasamutsidwa ku dongosolo lozungulira.Mapaketi opota apamwamba kwambiri, zokoka zokhala ndi ziboliboli ziwiri, makina ojambulira a HPc, ndi ma winder oyendetsa magudumu anayi amapanga ulusiwo ndikuwonjeza pamadzi.Malinga ndi wopanga, mzere wopanga mafakitale ukugwira ntchito bwino ku Poland.