Iphepha lendebe le-PE liyindlela entsha futhi enobungani nemvelo esikhundleni sezinkomishi zepulasitiki zendabuko. Lenziwe ngohlobo olukhethekile lwephepha elimbozwe ngesendlalelo esincane se-polyethylene, okwenza lingangeni manzi futhi lilungele ukusetshenziswa njengendebe elahlwayo. Ukuthuthukiswa kwephepha lendebe le-PE kube uhambo olude noluthakazelisayo olunezinselele eziningi kanye nempumelelo endleleni.
Umlando wephepha lendebe le-PE ungalandelelwa emuva ekuqaleni kwawo-1900, lapho izinkomishi zephepha zaqala ukwethulwa njengendlela ehlanzekile nelula esikhundleni sezinkomishi ze-ceramic noma zeglasi. Kodwa-ke, lezi zinkomishi zephepha zokuqala zazingeqinile kakhulu futhi zazinokuthambekela kokuvuza noma ukudilika lapho zigcwele uketshezi olushisayo. Lokhu kwaholela ekuthuthukisweni kwezinkomishi zephepha ezimbozwe nge-wax ngawo-1930, ezazimelana kakhulu noketshezi nokushisa.
Ngawo-1950, i-polyethylene yaqala ukwethulwa njengento yokumboza izinkomishi zephepha. Lokhu kwavumela ukukhiqizwa kwezinkomishi ezazingangeni manzi, zingashisi, futhi zingangenisi mvelo kakhulu kunezinkomishi ezimbozwe nge-wax. Kodwa-ke, ubuchwepheshe kanye nezinqubo zokukhiqiza ezidingekayo ekukhiqizeni iphepha le-PE cup ngezinga elikhulu zathuthukiswa ngokugcwele.
Enye yezinselelo ezibalulekile ekuthuthukiseni iphepha le-PE cup kwakuwukuthola ibhalansi efanele phakathi kwamandla nokuguquguquka. Iphepha kwakudingeka libe namandla ngokwanele ukubamba uketshezi ngaphandle kokuvuza noma ukudilika, kodwa futhi liguquguquke ngokwanele ukuze libunjwe libe yindebe ngaphandle kokudabula. Enye inselele kwakuwukuthola izinto zokusetshenziswa ezidingekayo ukuze kukhiqizwe iphepha le-PE cup ngobuningi. Lokhu kwakudinga ukubambisana kwezimboni zephepha, abakhiqizi bepulasitiki, kanye nabakhiqizi bezinkomishi.
Naphezu kwalezi zinselele, isidingo sezinye izindlela ezinobungani nemvelo nezisimeme esikhundleni sezinkomishi zepulasitiki zendabuko siye saqhubeka nokukhula eminyakeni yamuva nje. Iphepha lenkomishi le-PE manje selisetshenziswa kabanzi ezitolo zekhofi, ezitolo zokudla okusheshayo, nakwezinye izimboni zezinsizakalo zokudla njengenketho enobungani nemvelo. Liyathandwa kakhulu futhi phakathi kwabathengi abakhathazekile ngomthelela wemfucuza yepulasitiki emvelweni.
Ekuphetheni, ukuthuthukiswa kwephepha lendebe ye-PE kube uhambo olude noluthakazelisayo oluye lwadinga iminyaka eminingi yocwaningo nentuthuko. Kodwa-ke, umphumela wokugcina uwumkhiqizo onobungani nemvelo futhi osebenza kahle ngokwezomnotho. Njengoba isidingo sabathengi semikhiqizo enobungani nemvelo siqhubeka nokukhula, kungenzeka ukuthi sizobona intuthuko eyengeziwe ekuthuthukisweni nasekukhiqizweni kwemikhiqizo eluhlaza njengephepha lendebe ye-PE.
Isikhathi sokuthunyelwe: Ephreli-21-2023