Ulwazi oluthile malunga neetyhubhu zeplastiki zokuhombisa
Ityhubhu yeplastiki yokuhombisaZithandwa kakhulu ngabavelisi abaninzi bezinto zokuthambisa ngenxa yobunzima bazo obulula, ukuphatheka lula, ukuqina, ukuphindeka kwakhona, ukucudiswa lula, ukusebenza kakuhle kokucutshungulwa kunye nokuprintwa lula. Zisetyenziswa kakhulu ekupakisheni cityhubhu ethambileyo ye-osmetic iimveliso ezifana nezicoci zobuso (izicoci zobuso, njl.njl.), iimveliso zokhathalelo lolusu (iikhrimu ezahlukeneyo zamehlo, iikhrimu zokufumisa, iikhrimu ezondlayo, iikhrimu ezibandayo kunye nezikhuseli zelanga, njl.njl.) kunye neemveliso zokhathalelo lobuhle neenwele (iishampoo, izithambisi-moya, iilipstick, njl.njl.).
Kwabo bangaqhelananga ityhubhu yeplastiki yokuhombisas, ukuyila uyilo ngokwalo kunokuba ngumsebenzi onzima. Nje ukuba kwenziwe impazamo, yonke iprojekthi inokonakala. Ababoneleli abakumgangatho ophezulu baya kuyila uyilo olulula kwabo bangaqhelananga nalo ityhubhu yeplastiki yokuhombisas. Emva kokuba ububanzi kunye nobude betyhubhu buchongiwe, baya kubonelela ngemephu yendawo yoyilo. Udinga nje ukubeka umxholo woyilo ngaphakathi kwendawo yemephu kwaye uwubeke phakathi. Ababoneleli abakumgangatho ophezulu baya kujonga kwaye banike iingcebiso malunga noyilo lwakho kunye nenkqubo yemveliso. Umzekelo, ukuba indawo yeliso le-photoelectric ayilunganga, baya kukwazisa; ukuba umbala awufanelekanga, baya kukukhumbuza; ukuba iinkcukacha azihambelani noyilo, baya kukukhumbuza ngokuphindaphindiweyo ukuba utshintshe uyilo; umzekelo, ukuba indlela kunye nokufundeka kwebhakhowudi kuyafaneleka na, nokuba ukwahlulwa kombala kunye nenkqubo kunokuvelisa. ityhubhu ethambileyo yobuhle, nokuba iimpazamo ezincinci ezifana nokuba umzobo awugobile, ababoneleli abakumgangatho ophezulu baya kukujonga nganye nganye.
Izinto ezisetyenziswayo mazihambelane nemigangatho efanelekileyo yococeko, kwaye umxholo weentsimbi ezinzima, izinto ezikhanyayo kunye nezinye izinto eziyingozi kufuneka ulawulwe ngaphakathi koluhlu olumiselweyo. Umzekelo, kwi ityhubhu yeplastiki yokuhombisaXa zithunyelwa eMelika, i-polyethylene (PE) kunye ne-polypropylene (PP) ezisetyenzisiweyo kufuneka zihlangabezane nemigangatho ye-US Food and Drug Administration (FDA).
Kukho iindlela ezimbini zokuzalisa ityhubhu yeplastiki yokuhombisas: ukuzaliswa okuvela kwi ityhubhu ethambileyo yobuhleumsila kunye nokuzaliswa okuvela emlonyeni wetyhubhu. Ukuba kuzaliswa emlonyeni wetyhubhu, xa uthenga ityhubhu yeplastiki yokuhombisa, kufuneka uqaphele ukuba "ubukhulu bomlomo wetyhubhu kunye nobukhulu bomlomo wokugcwalisa" ziyahambelana na kwaye nokuba zingafakwa ngokuguquguqukayo kwityhubhu. Ukuba zizaliswe ukusuka emsileni wetyhubhu, kufuneka ubeke ibhokisi ityhubhu yeplastiki yokuhombisakwaye uqwalasele icala lentloko nomsila wemveliso, kunye nendlela yokwenza inkqubo yokuzalisa ibe lula kwaye ikhawuleze. Okwesibini, kufuneka wazi ukuba umxholo ozalisiweyo ngexesha lenkqubo yokuzalisa "ukugcwalisa okushushu" okanye kubushushu begumbi. Ngaphezu koko, inkqubo yale mveliso idla ngokunxulumene noyilo. Kufuneka uqonde umongo wemveliso yokuzalisa kwangaphambili ukuze uphephe iingxaki kwaye ufezekise ukusebenza kakuhle kwemveliso.