Ipolietheleini yedlowi (LDPE) izinguqulo ezinamandla zombili zokuthiwa ngazo kwezinye izinto eziqoqweni kakhulu. LEDE uhlawulwa njengeyiphi umthakathi wakhe, okuyenza ukukholelwa ukuthi iphetha yamanani ayingani noma ungenani lokunye umsane wakhe. Ukumthakathi kuhle kungaba ukuthi iphetha lizisiza noma lihlahla. Lapho sithetha ngokubanzi, sizofunda ngeLEDE umthakathi, amahlelo angaso, izindlela zakusetyenziswa nokuphela.
LEDE uhlatshwa njengeyiphi imali elinganani. Uyihlobene ngenkathelo, uqondile kakhulu kunye nokugcina, lokhu kungaba ngokwesikhatsi sifundekayo kanye nezinto eziningi. LEDE, isenjalo, uzobona kwiimbaghi zophetha zesitshalo, i-shrink wrap kunye ne-bubble wrap. Bayilinganani, bayiqhathanisi kakhulu, nabahlelo abasiza kakhulu kunye nobungakanani obuhle. Bazibopheza izinto esihlalene nabo. Izinto ezidinga LEDE zihlala phakathi kwabo abazange babuyekeze, lokhu kungabikho kuhlukekhetho lokusebenzisa emva kokuthi kuhlaleke kwezindlu. Kufuneka le nto ikhuse izindlu zethu ukuba zikhulu kunye nokuziphatha ukushintsha: Ukubuyekeza.
Ukuphakama kwe-LDPE kuvariyelani, ngokusho ukuthi kungabonakalanga njengezini lokusebenza kunye nomsebenzi wesiphi esebenza yena. Ngokuzinikezelayo, i-LDPE lingakwazi ukuphakama phakathi kwe-0.910 kunye ne-0.940 g⁄cm³. Ukuphakama kwe-LDPE kuhlanganisiwa ngeminyaka emnandi, ukuze libe luhlukaniselo lokulandelana nesinye izimo.ldpe low density polyethyleneukusetyenziswa kakhulu ngokubanzi kwiqhosha leziseko lesibhaliweyo, ngokwesiphi. Iyiphuhlisa amabhukisi abafreshi kunye nokutholakalayo. Ngokugcineneyo, i-LDPE esikhulu sosebenzi siyusetshenziswa kumncedi omkhulu njengamanqaku wemili kunye neziphuzi zomkhulu zokulanda. Lolu noma lokhu kufuneka libe lencinane, ukuba libe lindelene lolu hlobo olungaphansi ukuvamileyo ezintathu.
Kunezinye izinto ezininzi ziqhelekileyo ukuba i-LDPE yindlela elithile yokusebenza lokusekwa. Ngiyabona ukuba ungenxa lokho kuna imigomo engaphezulu yokuprotekela izinhlobo. Ngokwesiphi, i-LDPE iyiphuhlisekileyo yinkwazi ukukhokha umoya okuyihlabeleka, eyenza ukuba ayiphumeleyi umoya wemanzini ukusuka ukuze alindeleke amaqhina angaphakathi. Lokuhle kulula kumhlaba wesibhaliweyo kunye namagama ezingazisukelela azizange zibe ndlela. I-LDPE nalo ngeke leyi flexible ngoba lihamba kunye nokushayelela ngaphandle kokucabanga kakhulu. Ngiyabona ukuba luye transparent, ngoba ungabone ngaphakathi yini yenze kuwo kwindawo.
Akuhlawulwa ukuthi zonke i-LDPE lisebenziswe kwi-pakhejini. Lihlala ngenxa yalo ngazo izinto ezinnyovene ezilandelwayo. I-LDPE, futhi, lisetshenziswa ngokubekwa kumakhando okusekelwe (ezisetshenziswa ngemithwalo lemfundzwana nemikhopho), lokhu lingahlela amanye amagcinane. Lihlala kunye ne-toyizeli ukuze zisafinyelele kuzo zibe ngaphandle kokugcwalisa. Ngokwesokudla, i-LDPE sisetshenziswa ngalokho olungaphansi kompyutha, ukuze bengenziwe ngokuphelele. Lokhu kuhlala ukuvumela njengoba i-LDPE ifaka indlela yokuba imigomo engamandla kunye neziphroducts ezinhle.
Ngakho, uma unesiyo esikhethekileyo esebenzelwe ngamandla okushaya i-LDPE, uzobuya ngokukhangelwa kunye nokusetyenziswa kwesibhedlela kulula phakathi kwezi siyiyo esebenzelwe ngamandla encinci. Ngakho ke, i-LDPE samandla sokushaya sifanele kusetshenziswa kumahluko angaba abangasiza kunye nobucababi obunomdla. Ngaphezu kwalokho, i-linear low density LDPE sibuyiselwa ngokubekwa kunye nokungavumelekanga, ukuze libe luchuze lokusebenza kuhlanganisa kunye nokugcwalisa izinto.
Ukukhupha kwezilungiselelo zokuthatha (MFI) izinga lokuhlola ukuthi ngaphandle kanjani iphethi lehlula kunqululiweyo. Ukuncabana kokuthi MFI akuyenzekelayo kungenisa okubonakalayo kwe-LDPE. Izilungiselelo ezikhulu ze-MFI zingabiza ukuthi i-LDPE engaphezulu kancane, ngakho ke i-LDPE engaphezulu kunye ngenxa yalokho kungaba ngokwesikhatsi esikhulu sokuthi ukuqhathaniswa kunqululiweyo kunomoya ongaphansi. Lokhu kungaba kuhluze kodwa kodwa kunikeza umphako omncane nokunqume. U-LDPE lwengasihle lwemfazwe, ngakho ke, luna MFI oluncabanyisileyo, lokuthi lindawo alithathe futhi alifinyelele ngokushesha kulandelayo nalendlela yezilungiselelo ezincane ze-LDPE. Ngakho ke, lokhu kuningenisa ukuthi isenzo siphakamise kakhulu ukusetyenziswa, ngakho ke, ngasinye singahamba ukuthi kungabizwa amaninzi okanye amaphroduct.
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