Okwangoku, eyona ndlela iphambili yokusetyenziswa kwei-polyethylenekwilizwe lam ziquka ifilimu, ukubumba inaliti, umbhobho, umngxuma, umzobo wocingo, intambo, i-metallocene, i-coating kunye nezinye iindidi eziphambili.
Eyokuqala ithwele ubunzima, elona candelo likhulu lokusetyenziswa komlambo yifilimu. Kwishishini lemveliso yefilim, eyona nto iphambili yifilimu yezolimo, ifilimu yeshishini kunye nefilimu yokupakisha imveliso. Nangona kunjalo, kwiminyaka yakutshanje, izinto ezinje ngezithintelo kwiingxowa zeplastiki kunye nokuncipha okuphindaphindiweyo kwemfuno ngenxa yobhubhani baye babakhathaza ngokuphindaphindiweyo, kwaye bajongene nemeko ehlazo. Imfuno yeemveliso zefilimu zeplastiki ezilahlwayo ziya kutshintshwa ngokuthe ngcembe kunye nokuthandwa kweeplastiki ezonakeleyo. Uninzi lwabavelisi beefilimu nabo bajongana nezinto ezintsha zetekhnoloji yemizi-mveliso, kwaye ngokuthe ngcembe baphuhlisa ukuya kwiifilimu ezinokuphinda zisetyenziswe kwimizi-mveliso ezinomgangatho owomeleleyo kunye nokusebenza. Nangona kunjalo, ngenxa yokonakala kweefilimu zeplastiki ezinokonakala, kukho iimfuno ezinamandla zokupakishwa kwangaphandle, okanye imfuno yeefilim zokupakisha zangaphandle ezifuna ukugcinwa ixesha elide ngaphaya kwexesha lokuthotywa, kunye neefilimu zemizi-mveliso kunye nezinye iindawo ezingenakuphinda zibuyiselwe, ngoko ke iimveliso zefilimu zisaza kusetyenziswa. Ikhona njengeyona mveliso iphambili ezantsi kwe-polyethylene ixesha elide, kodwa kunokubakho ukuncipha kokukhula kokusetyenziswa kunye nokwehla komlinganiselo.
Ukongeza, amashishini afana nokubumba inaliti, imibhobho, kunye nemingxuma enxulumene ngokusondeleyo kwimveliso kunye nobomi iya kuhlala iyeyona mveliso iphambili yabathengi ezantsi kwepolyethylene kwiminyaka embalwa ezayo, kwaye isaya kulawulwa ziziseko zophuhliso, iimfuno zemihla ngemihla, kunye nezixhobo zoluntu kunye nezixhobo. Ukuphila kwabantu kunxulunyaniswa nempahla ehlala ixesha elide, kwaye imfuno yokuthotywa kwemveliso iyancipha. Eyona ngxaki iphambili ejongene nale mizi mveliso ingentla ngoku kukuba izinga lokukhula kwecandelo lezindlu nezindlu liye ladodobala kule minyaka yakutsha nje. Ngenxa yezinto ezinje ngengxelo engeyiyo malunga noluvo lokusetyenziswa kwabahlali oluziswa ngubhubhani ophindaphindiweyo, uphuhliso loshishino lwemveliso lujongene nokuxhathisa okuthile kokukhula. Ngoko ke, utshintsho kwinxalenye yexesha elifutshane luncinci, luchatshazelwa ngaphantsi kweemveliso zokuthotywa, ushishino lombhobho lunokuchatshazelwa yimigaqo-nkqubo, ngelixa ukubunjwa kwe-injection kunye neemveliso ezingenanto zichatshazelwa ngakumbi kukuvakalelwa kokusetyenziswa kwabahlali, kwaye izinga lokukhula liya kuthotha ixesha elithile kwixesha elizayo.
Ngophuhliso oluqhubekayo lwesayensi kunye nethekhinoloji, ukwenziwa komntu ngamnye kunye nokuqulunqwa kwabantu kwiimveliso zeplastiki, kunye nokuveliswa kwezinto ezintsha zomgangatho wemveliso kunye neemfuno zemveliso ezilungiselelweyo nazo zihlala ziphuhliswa. Ke ngoko, kwixa elizayo, ishishini leemveliso zeplastiki liya kwandisa imfuno yezinto ezithile ekrwada eziphucula ukusebenza kweemveliso zeplastiki, ezifana metallocenes, iiplastiki eziqengqelekayo, izinto zokugquma kunye nezinye iimveliso ezinexabiso elongeziweyo okanye iimveliso ezineemfuno ezizodwa kwiinkalo ezizodwa. Ukongeza, ngenxa yemveliso egxininisiweyo yamashishini emveliso ye-polyethylene kwiminyaka yakutshanje, okubangele ukuguquguquka okukhulu kwemveliso, kunye nongquzulwano phakathi kweRashiya ne-Ukraine enyakeni kubangele amaxabiso aphezulu e-oyile ukuba anyuse ingeniso ye-ethylene ezantsi, kunye nokunyuka kweendleko kunye nokubonelela kubangele i-homogeneity yemveliso enzulu. Ngaphantsi kwemeko yangoku, i-polyethylene Abavelisi basebenza ngakumbi ekuveliseni iimveliso eziphezulu zexabiso elongezelelweyo ezifana ne-metallocenes, ukubunjwa okujikelezayo, kunye neengubo, ngokuhambelana nophuhliso lwamashishini asezantsi. Ke ngoko, izinga lokukhula kweemveliso linokunyuka ukuya kuthi ga kwinqanaba elithile kwixesha elizayo.
Ukongeza, njengoko ubhubhane uqhubeka ngokuphindaphindiweyo, kunye nophando kunye nokuphuhliswa kweempawu ezintsha ngabavelisi, iifayili ze-polyethylene, izixhobo ezikhethekileyo zonyango kunye nokukhusela imveliso ekhethekileyo ilandelwa ngokuthe ngcembe kwaye iphuhliswe, kwaye imfuno yexesha elizayo nayo iya kwanda ngokuthe ngcembe.
Ixesha lokuposa: Dec-26-2022