Chidule Chachidule cha Njira Yopangira Ma PET Containers

Mawu Oyamba

Polyethylene Terephthalate, yomwe imadziwika kuti PET, ndi mtundu wapulasitiki womwe wakhala wofunikira kwambiri pamakampani opanga ma CD. Yodziwika ndi mphamvu zake, kuwonekera, komanso kubwezeredwa, PET imagwiritsidwa ntchito kwambiri popanga zotengera zakumwa, chakudya, mankhwala, ndi zinthu zina. Tsambali limapereka chiwongolero chachidule cha kapangidwe kazotengera za PET, kuchokera pazopangira mpaka zomaliza.

1. Kaphatikizidwe ka Zinthu Zopangira

Njira yopanga imayamba ndi kaphatikizidwe ka PET resin. PET ndi polima yopangidwa kuchokera ku terephthalic acid (TPA) ndi ethylene glycol (EG). Mankhwala awiriwa amapangidwa ndi polymerization kuti apange ma pellets a PET, omwe ndizinthu zoyambira kupanga zotengera za PET.

2. Preform Production

Chotsatira mu ndondomekoyi ndi kulenga preforms. Ma preforms ndi zidutswa zing'onozing'ono, zooneka ngati chubu za PET zomwe pambuyo pake zimawomberedwa m'chidebe chomaliza. Kupanga preforms kumaphatikizapo:
(1) Kuyanika Ma Pellets a PET:Ma pellets a PET amawuma kuti achotse chinyezi, zomwe zingakhudze ubwino wa mankhwala omaliza.
(2) Kupanga jakisoni:Ma pellets owuma amadyetsedwa mu makina opangira jakisoni, pomwe amasungunuka ndikubayidwa mu nkhungu kuti apange preforms. The preforms ndiye utakhazikika ndi ejected ku nkhungu.

3. Kuwomba Kuumba

Kuwomba ndi njira yomwe ma preform amasinthidwa kukhala zotengera zomaliza za PET. Pali mitundu iwiri ikuluikulu ya njira zowomba: jekeseni wotambasula (ISBM) ndi extrusion blow molding (EBM).

Injection Stretch Blow Molding (ISBM):
(1) Kutentha:Ma preforms amatenthedwa ndi kutentha kwina kuti azitha kumveka.
(2) Kutambasula ndi Kuwomba:Preform yotentha imayikidwa mu nkhungu. Ndodo yotambasula imafikira mu preform, kuitambasula motalika. Nthawi yomweyo, mpweya wothamanga kwambiri umawomberedwa mu preform, ndikukulitsa kuti ugwirizane ndi mawonekedwe a nkhungu.
(3) Kuzizira:Chotengera chatsopanocho chimakhazikika ndikuchotsedwa mu nkhungu.

Extrusion Blow Molding (EBM):
(1) Extrusion:PET yosungunuka imatulutsidwa mu chubu, yotchedwa parison.
(2) Kuwomba:Parisonyo imayikidwa mu nkhungu ndikuwomberedwa ndi mpweya kuti igwirizane ndi mawonekedwe a nkhungu.
(3) Kuzizira:Chidebecho chimakhazikika ndikuchotsedwa mu nkhungu.

4. Kuwongolera Ubwino ndi Kuyesa

Kuwongolera kwapamwamba ndikofunikira panthawi yonse yopanga kuti zotengera za PET zikwaniritse zofunikira. Mayesero osiyanasiyana amachitidwa kuti ayang'ane zinthu monga mphamvu, kumveka bwino, ndi kukana kutayikira. Makina ogwiritsa ntchito ndi zowunikira pamanja amagwiritsidwa ntchito kuti azindikire ndi kukonza zolakwika zilizonse.

5. Kulemba ndi Kuyika

Zotengerazo zikadutsa mayeso owongolera, zimapita kumalo olembera ndi kulongedza. Zolemba zimagwiritsidwa ntchito pogwiritsa ntchito njira zosiyanasiyana, monga zomatira, manja ocheperako, kapena kusindikiza mwachindunji. Zotengera zolembedwazo zimapakidwa ndikukonzedwa kuti zigawidwe.

Mapeto

Kapangidwe kazotengera za PET ndikuphatikiza kosangalatsa kwa chemistry ndi uinjiniya. Kuyambira kaphatikizidwe kazinthu zopangira mpaka pakuyika komaliza, gawo lililonse limapangidwa mwaluso kuti lipange zotengera zapamwamba kwambiri, zodalirika komanso zotetezeka. Kusinthasintha kwa PET komanso kubwezeretsedwanso kumapangitsa kuti ikhale chisankho chokondedwa m'mafakitale ambiri, kuwonetsa kufunikira kwazinthuzo pamayankho amakono oyika.

Malingaliro Omaliza

Kumvetsetsa kamangidwe ka zotengera za PET sikumangowonetsa zovuta komanso kulondola komwe kumakhudzidwa komanso kumatsimikizira kufunikira kwaukadaulo komanso kukhazikika kwamakampani onyamula katundu. Pomwe ukadaulo ukupita patsogolo, titha kuyembekezera kusintha kwina pakuchita bwino komanso kukhudzidwa kwa chilengedwe pakupanga zida za PET.