Izinto ze-Polythene zingezinye zezinto ezisetshenziswa kakhulu kuma-polymers ekwenzeni izinto zesimanje, ukupakisha, kanye nezimpahla zabathengi, futhi ukuqonda izici zazo kubalulekile kumabhizinisi athembele ezintweni zokwenziwa zepulasitiki. Lesi sethulo sichaza amakhemikhali ayisisekelo, izindlela zokucubungula ezijwayelekile, kanye nokubaluleka kwezentengiselwano kwezinto ze-polythene kumaketanga okuhlinzekwa emhlabeni wonke. I-Polythene, evame ukubhalwa ngokuthi i-polyethylene emibhalweni yezobuchwepheshe, ikhona ngezindlela eziningi zokuminyana kanye nezakhiwo ezithinta izici zemishini, ukusebenza komgoqo, nokufaneleka kwezicelo ezithile. Kubakhiqizi, abaklami, kanye nabachwepheshe bokuthenga, ukujwayelana nemiqondo phakathi kwe-HDPE, i-LDPE, i-LLDPE, kanye nezinye izigaba ezikhethekile ezifana ne-expanded polyethylene kungathuthukisa ukukhethwa kwezinto futhi kunciphise izindleko zokujikeleza. Lesi sigaba sibeka isiteji sokuhlaziya okujulile kohlobo ngalunye olukhulu, ukusetshenziswa okujwayelekile, kanye nokuhwebelana phakathi kokusebenza kanye nokusebenziseka kabusha okuyisici sezinto ze-polythene.

I-High density polyethylene (HDPE) iyipholimela eliyingxenye yekristale eyaziwa ngokuqina kwayo, ukumelana namakhemikhali, nesilinganiso esiphakeme samandla esisindo, okwenza i-HDPE ilungele izicelo ezifana neziqukathi, imibhobho, nezingxenye ezakhiwe ngokuqina. I-Low density polyethylene (LDPE) inesakhiwo samajenjini esihlukahlukene kakhulu, esinikeza ukuguquguquka okuhle kakhulu, ukucaca, nokuba namandla ezicelo zamafilimu nokupakishwa okuguquguqukayo. I-Linear low density polyethylene (LLDPE) ihlanganisa izintambo zamajenjini ezihambisanayo nezingxenye ezimfushane ukuze inikeze amandla okudonsa athuthukisiwe nokumelana nokubhoboza, yingakho i-LLDPE ijwayelekile kumafilimu esitshalo nemininingwane yezimboni. I-Expanded polyethylene ibhekisa ezinhlobonhlobo ezifuthelene noma ezinezinga eliphansi lokuminyana ezisetshenziselwa ukugcwalisa, ukufakelwa, nokuntanta, okunikeza izinzuzo ezihlukile ekumuncini komthelela nokusebenza kwe-thermal. Ukuqonda umehluko phakathi kwale mikhaya yezinto ze-polythene kusiza onjiniyela ukuthi bakhethe ibanga elifanele izindlela zokucubungula ezifana nokukhipha, ukubumba ngomoya, nokubeka amafilimu, ukufanisa i-microstructure yempahla nezidingo zokugcina.

Izinto ze-Polythene zisetshenziswa ezimbonini ezahlukahlukene ezihlanganisa ukupakisha ukudla, ukwakha, ezemoto, ezolimo, kanye nezimpahla zabathengi, lapho yonke imikhakha isebenzisa izici ezithile zamahlanganiselo ahlukene e-polyethylene ne-polypropylene. Ekupakisheni, i-LDPE ne-LLDPE zibusa kumafilimu aguquguqukayo, izikhwama zegrosari, kanye nezingqimba ezihlanganisiwe; i-HDPE ithandwa ezitsheni eziqinile, amabhodlela, kanye nezindawo zokugcina ngenxa yokuqina kwayo nekhono lokuvimbela. Imboni yokwakha isebenzisa i-HDPE ezinhlelweni zamapayipi, ama-geomembranes, kanye nama-vapor barriers, lapho ukumelana namakhemikhali esikhathi eside kanye nokumunca amanzi okuphansi kubalulekile. Amafilimu ezolimo, amafilimu omquba, kanye nezingubo zezindlu zokulima zithembele kumadigri alungiselelwe e-LLDPE ne-LDPE ukuze kulinganiswe ukuzinza kwe-UV nokuqina komshini. Ezinkampanini ezihlola abahlinzeki bezinto, ukuxhumanisa imininingwane yomkhiqizo nesicelo—njengokufanisa i-melt flow index, ubuningi, namaphakethe engeziwe—kuqinisekisa ukusebenza okuthembekile kanye nokuthobela imithetho yezicelo zokuthintana nokudla noma ezokwelashwa.

Enye yezinzuzo eziyinhloko zezinto ze-polythene ukuthi azibizi kakhulu kanti futhi zinezigameko ezinhle zemishini nezamakhemikhali, zinikeza abakhiqizi izixazululo ezikwazi ukukala ukukhiqiza ngobuningi. Isisindo esilula se-polyethylene sinciphisa izindleko zokuthutha futhi sivame ukubangela ukonga amandla ngesikhathi sokusingatha, kanti ukucubungula kwe-polymer ngokusebenzisa i-injection molding, i-blow molding, kanye ne-extrusion kwenza ukukhiqiza kube kahle. Izinto ze-Polythene ziphinde zibonise ukumelana okuqinile nomswakama, izincibilikisi eziningi, nokuhlaselwa kwe-biological, okwandisa impilo yemikhiqizo futhi kunciphisa ukulahleka komkhiqizo ezindaweni ezinzima. Enye inzuzo ukuthi kulula ukuguqula amafomula e-polyethylene ngokusebenzisa izithako ezingezekayo—njengezihlanganisi ze-UV, ama-antioxidants, nama-slip agents—ukuze kube lula ukusebenza kwezimo ezithile ezifaka phakathi ukuqina kwangaphandle noma ukuphepha kokudla. Ezinkampanini ezifuna izinto ezilinganisa ukusebenza, izindleko, nokukhiqizwa, izinto ze-polythene zethula iqoqo elihlukahlukene lezinketho ezingalungiswa kahle kuzo zonke izicelo.

Iphrofayili yemvelo yezinto ze-polythene iyisici esibalulekile okufanele sicatshangelwe amabhizinisi anesibopho, esihlanganisa izihloko ezifana nokugaywa kabusha, umkhondo wekhabhoni, nokuphathwa kahle kukadoti ongase usetshenziswa. Izinhlobo eziningi ze-polythene—ikakhulukazi i-HDPE namafilimu athile e-LDPE—ezingagaywa kabusha ngezindlela zokugaywa kabusha komshini, futhi ukutholakala okwandayo kwe-HDPE egaywe kabusha kwenza izixazululo zokupakisha ezivalekile zibe nokwenzeka kakhudlwana. Nokho, izinselelo zisaqhubeka kumafilimu amancane anezendlalelo eziningi, amapulasitiki angcolile, kanye nama-foam e-polyethylene anwetshiwe, angaba nzima ukuqoqa nokucubungula ngendlela enenzuzo. Izilinganiso zokujikeleza kwempilo eziqhathanisa i-polythene nezinto ezisebenza njengezikhundla zivame ukukhombisa izinzuzo emandleni omsebenzi kanye nokukhishwa okuhlobene nesisindo, kodwa lezi zinzuzo zincike ezinhlelweni zokugaywa kabusha ezisebenzayo kanye nomklamo womkhiqizo olungiselelwe kahle. Izinkampani kufanele zihlole ukukhetha izinto hhayi kuphela ngezindleko zokuqala nokusebenza kodwa futhi nezindlela zokuphela kwempilo, ukulebula kokugaywa kabusha, kanye namandla okufaka okuqukethwe okugaywe kabusha ukunciphisa ikhabhoni eyakhelwe kulo lonke uchungechunge lokuhlinzekwa.

Ukwamukela izindlela ezingcono kakhulu zezinto ze-polythene kuqala ngokuklama ukuze kulungele ukugaywa kabusha: ukunciphisa izendlalelo zamapholima ahlanganisiwe, ukugwema izithako ezingakwazi ukugaywa kabusha, nokukhetha amakhodi e-resin amukelwa kabanzi ukuze kuthuthukiswe amazinga okutholwa. Abakhiqizi kufanele futhi basebenzise ukuhlolwa kwezinto—njengokuhlola i-melt flow index, ukuqinisekisa ubuningi, nokuhlolwa kokungcola—ukuze kuqinisekiswe ukucubungula okungaguquki nokugaywa kabusha kwezingxenye ezikhiqiziwe. Ngokuphathwa nokulahlwa, ukulebula okucacile nokubambisana nezinhlelo zokugaywa kabusha zasendaweni kukhulisa amathuba okuthi amabhodlela e-HDPE nezinye izikhwama ze-LDPE zitholwe futhi zigaywe kabusha kunokuba zilahlwe emadanyeni. Lapho ukugaywa kabusha kungasebenzi, amasu angaphandle njengokugaywa kabusha kwamakhemikhali, ukutholwa kwamandla ngaphansi kwezimo ezilawulwayo, noma ukufakwa kwezinto ezingenawo amapholima ezibola zingahlolwa ukuze kutholwe izinzuzo zemvelo nezomnotho. Amabhizinisi anganciphisa kakhulu umthelela ngokuthola i-polyethylene egaywe kabusha esetshenziswe ngabantu kanye nokusebenza nabahlinzeki abanikeza ukucaca ngemvelaphi ye-polymer nokuqukethwe kwezithako.

Ukukhetha izinto ezifanele ze-polythene kufuna uhlaka oluhlelekile olucabangela izidingo zemishini, imikhawulo yokulawula, izimo zokuphela kwempilo, kanye nemigomo yezindleko. Qala ngokuchaza izinto ezibalulekile ezibalulekile—amandla okwelula, ukusebenza komgoqo, ukuguquguquka, noma ukumelana nokushisa—bese uzihambisa kumapholima akhethwayo: i-HDPE yokuqina nokumelana namakhemikhali, i-LDPE yokuguquguquka nokucaca, kanye ne-LLDPE yokuqina nokumelana nokubhoboza. Cabanga ukuthi ngabe ukuhlanganiswa kwe-polyethylene ne-polypropylene noma ama-copolymers kuzonikeza ukuthuthukiswa kokusebenza, futhi uhlole ukuhambisana kwenqubo nezinto ezikhona njenge-extruders namasimu. Ubuhlobo nabathengisi bubalulekile: ukwesekwa kwezobuchwepheshe okuthembekile nokuhlolwa okungaguquki kwezinto kusheshisa ukuxazulula izinkinga kanye nokuqaliswa komkhiqizo omusha. Ukufaka okuqukethwe okusebenzisiwe kufanele kulinganiswe nezinguquko ezingenzeka ezintweni zemishini nombala, okudinga ukugijima kwe-pilot nokulungiswa kwezicaciso.

Ngokusebenza, amabhizinisi kufanele ahambise ukukhethwa kwezinto ngokuhambisana nokukhiqizwa, ukuklanywa kwezikuluphu zemishini, kanye nezindlela zokuqedela ezilandelayo ukuze kuncishiswe amaphutha futhi kuthuthukiswe izikhathi zokujikeleza. Ukuhlaziywa kwezindleko kufanele kufake hhayi intengo ye-resin kuphela kodwa namandla okucubungula, izinga lokulahlwa, kanye nokonga okungenzeka kusukela ekwehliseni ubukhulu (izindonga ezincane noma ama-film) okunikezwe izigaba ezisebenza kakhulu njenge-LLDPE noma i-HDPE ekhethekile ye-high-modulus. Ukugcinwa kwekhwalithi yezinto ezihambisanayo kugwema ukuphazamiseka kokukhiqiza futhi kunciphisa izimangalo zewaranti; ngakho-ke, izivumelwano zekhwalithi nokubuyekezwa kwezitifiketi zokuhlaziya nabahlinzeki be-resin kuyalulekwa. Ekugcineni, ukuhlaziywa kwezindleko zokuba nazo zonke izindleko ezifaka izimali zokulahla kanye nezikhuthazo zokugaywa kabusha kungashintsha ezomnotho zokuqhathanisa phakathi kwezinto ezahlukene ze-polythene nezinto ezithathelwa indawo.

Amathrendi amanje embonini agcizelela izimiso zomnotho oyindilinga, ngokutshalwa kwezimali kubuchwepheshe bokugaywa kabusha obuthuthukisiwe, izinhlelo zokuhlunga ezithuthukisiwe, kanye nokuklama amapholima athuthukisa ukugaywa kabusha. Ukugaywa kabusha ngamakhemikhali kwemifudlana ye-polyethylene exubile kanye neziyobisi zokukhiqiza izinto ezisezingeni eliphezulu zithola ukuduma njengezindlela zokuthola inani ezintweni ze-polythene ezinzima ukuzigaya kabusha, okuhlanganisa nezinhlobo ezithile zamagwebu e-polyethylene anwetshiwe. Ngokufanayo, ukuthuthukiswa kwezinhlanganisela zezithako kanye nama-compatibilizers kuvumela ukuhlanganiswa kwe-polyethylene ne-polypropylene ukuthi kucutshungulwe ngokuqina okuthuthukisiwe komshini, kuvula amathuba okuthola izinto emifudlaneni yemfucumfucu ye-multi-polymer. Abaphathi kanye nemikhiqizo nabo baphusha ukuthi kube nokuqukethwe okuphezulu okugaywe kabusha kanye nokulebula okucacile, okukhuthaza abahlinzeki ukuthi banikele ngama-HDPE agaywe kabusha aqinisekisiwe kanye nezigaba ze-LDPE ezigaywe kabusha. Amabhizinisi ahlala enolwazi ngalezi zinguquko zemakethe angakwazi ukuhlela kangcono izindlela zokuthenga kanye namamephu omkhiqizo ahambisana nezinjongo zokusimama.

Qingdao Xinfeng Jincheng International Trade Co., Ltd., inombolo yokuxhumana 13791924718 emareferensini, ingumhlinzeki kanye nomlingani wokuhweba ezinkampanini ezifuna izinto zokwakha ipulasitiki nemishini yokucubungula, futhi idlala indima ekuxhumaniseni abathengi nezinhlobonhlobo zezinto ze-polythene nemishini ehlobene. Ezinkampanini ezihlola abalingani, i-Qingdao Xinfeng Jincheng igcizelela ikhwalithi yomkhiqizo, isipiliyoni sezohwebo lwamazwe ngamazwe, nosizo ngemininingwane yezinto—lokhu kusiza lapho uthenga i-HDPE, i-LDPE, i-LLDPE, noma i-polythene eyandisiwe ekhethekile. Amakhasi emikhiqizo yabo nomlando wenkampani kunikeza imininingwane ngemikhiqizo etholakalayo, izinketho zokupakisha, nosizo lwezinto ezihambelana nabangenisi nabakhiqizi abafuna ukwenza izinto zokuhambisa zibe ngazimbili. Ukubuyekeza okunikezwayo kwemikhiqizo yabo noma ukuqala imibuzo, amabhizinisi angabheka amakhasi omhlinzeki ngokuqondile ukuze aqinisekise amakhono ezobuchwepheshe futhi acele izitifiketi zokuhlaziya zezinto ezithile ze-polythene.

Ukukhetha izinto ezifanele ze-polythene kufuna ibhalansi yezidingo zobuchwepheshe, ukucabanga ngesikhathi sokuphila komkhiqizo, kanye nobudlelwane nabahlinzeki ukuze kunikezwe imikhiqizo eqinile, enezindleko eziphansi, futhi ezinobuntu obuqhubekayo. Ngokuqonda umehluko phakathi kwe-high density polyethylene, i-low density polyethylene, i-linear low density polyethylene, i-expanded polyethylene, kanye nezingxube ezihlobene ne-polyethylene ne-polypropylene, amabhizinisi angakwazi ukuthuthukisa ukuklama komkhiqizo futhi anciphise umthelela emvelweni. Ukusebenzisa izindlela ezinhle kakhulu ekukhetheni izinto, ukuhlola, nokuhlela ukuphela kwempilo kuzothuthukisa ukusebenza komkhiqizo ngenkathi kusekelwa izinhloso zokujikeleza. Kubaqembu lokuthenga kanye nezingcweti zobunjiniyela, ukusebenza nabahlinzeki abanolwazi njengo-Qingdao Xinfeng Jincheng kungalungisa ukufinyelela kuma-resins asezingeni eliphezulu nokusekelwa kwezobuchwepheshe, okuvumela ukukhiqizwa okubikezelwe nokwamukelwa okulula kwezinto ezisetshenziswe kabusha. Ekugcineni, izinketho ezinolwazi ezizungeze izinto ze-polythene zivula izinzuzo zokusebenza futhi zibe nomthelela ezibophezelweni ezibanzi zokuzinza.

Ukuze uthole ulwazi olwengeziwe mayelana nabathengisi, izincwajana zemikhiqizo, kanye nezinsizakalo zenkampani ezihlobene nezinto ze-polythene, thintana namakhasi angaphakathi e-Qingdao Xinfeng Jincheng: vakashela ikhasi LOKUQALA ukuze ufunde mayelana nokugxila kwenkampani nohlu lwemikhiqizo, hlola IMikhiqizo ukuze ubuyekeze izigaba ezithile zemishini kanye nemishini, thintana NATHI mayelana nomlando wenkampani namakhono okuhweba, hlola IBHULOLELO ukuze uthole imininingwane yomkhakha, futhi usebenzise XHUMANA NATHI ukuze ucele amasampula noma imibhalo yezobuchwepheshe. Lezi zixhumanisi zingasiza amaqembu okuthenga ukuthi ahlole amakhono abahlinzeki, aqhathanise imininingwane yezinto, futhi aqale izivivinyo zokuthola i-HDPE, i-LDPE, i-LLDPE, i-polyethylene eyandisiwe, nezinye izixazululo ze-polymer.