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Ukwenziwa kwebhengele kuthuthukile kakhulu ngeminyaka engu-30, ngakho-ke i-shrink film ibukeka njengendlela eyodwa enobuchwepheshe kakhulu nesekethe kakhulu ekugcineni nokhombisa izinto. Izikhala zokwakha kanye nezimali zasekhanda zisebenzisa kakhulu lezi ziphamphela ezithile zepolymers ukuqinisekisa ukuthinta kwezinto ngexesha lokulawula, ukugcina, nokubeka kwizihloko. Ukuqonda izici ezihlukile kanye nezisebenzo zeziphamphela ze-PVC, POF, ne-PE shrink zivumela amabhizinisi ukwenza izinqumo eziphathelene ngempawu okuhle kakhulu phakathi kokuqhathaniswa nokusebenza kwezibhengele zabo.
Izici Zomnotho Nenkcubeko Yekhemikhali
Izinkomba zePolyvinyl Chloride Film
U-polyvinyl chloride uyisiphetho esibalulekile kwi-teknoloji ye-shrink film, ekhomba ubunzima obukhulu nokwakha kwe-printing okuhle kumasebenzi ezenzo. Ubunzima be-molecular structure be-PVC bukhula into enobunzima obungcono, kube lula kubona izinto ezivuliwe ngokucacile, ngelilanga kuyakha kakhulu kwezimali zomlilo nezinye izinkinga. Lokhu kubonakala, ngaphandle kokuthi kudingeka kugcwalise amandla afanayo, kwenza i-PVC ibaluleke kakhulu emakhanda apho ukubonakala kwesiprodo kusiza ekuthengeni.
Iziphawu zokwenta kwezimali ze-PVC shrink film zivumela izinkululeko zokusebenza phakathi kwe-250°F ne-300°F, zinika ixesha elide ekufuneka kulisebenzisa kumsebenzi wokupaka ngelengelela kodwa zihlinzela ukuba kugcineke kabonakala ngaphandle kwemithombo. Kodwa, izimangaliso zezimali ngokuthi kune-chlorine futhi njengoko kususwa kwenziwa kwalapho kubangelwa yizinkinga ezithile, kepha abakhethi abaningi baya kujonga izinto ezinhle, ikakhulu lapho izidingo zokuphila kulingana nokusebenza.
Ukholo Lwesimali SePolyolefin
Izimali ze-polyolefin, ebalulekileyo etholakala njenge-POF, zibonakala njengeqhubekiso elikhulu ku isinkhomo esisebenza ukholo, libambisana ngeziphawu zokukhula okuphelele nasekuhlakanipheni kwezimali, iqondo le-polyolefin eliqashelwe linikeza inhliziyo enhle yokungena futhi nokukhula, kuyakwenzela ukuthi ibe yisimo esihle sokupaka izinto ezinemigodolo yamandla noma izinto ezidinga ukuphathwa ngempahla ngempahla futhi zilungiswa
Amaphilimhi ase-POF ayakha ubunzima bokubona okungcolile kangcono kanye ne-PVC futhi azenzele amandla wokulungiswa nokusebenza kwezinkulungwane ezincane. Inkinga yomthelelo yokugcina iqiniso elingelishiyi ngaphandle kwesilinganiso esikhulu semithwa, kuyakwazi ukusebenzisa izinhlangano zokupaka ezihlukene noma izigidi zokupaka ngendlela ethintelwe. Ngaphezu kwalokho, i-POF ishiya izimali eziphansi kakhulu zezogogodla ngexesha lokugcinwa, kwenza imfundo engcono yokusebenza kubantu abasebenzayo ekupakeni.
Ubunifu bePolyethylene
Amaphilimhi ase-Polyethylene anika amathulwa amahle kuzindlela ezidinga ukukhuseleka kakhulu kumahlwa nezivikelo. Isakhiwo se-molekyuli se-PE sinezizathu eziningi ezikhethekileyo kwi-acids, bases, nezolubhu zokushisa, kuyakwenzela ukuthi ibe yisicelo esihlukileyo sokupaka izinto zokucula, iziqu zezimoto, nezinkinga zezidumbu. Lokhu kukhuseleka kwezimbi kuyakwenzela ukuthi umthelelo wokupaka ungabagcinani noma uvale izinto ezikhiphayiwa ngokude.
Izici zokuguquguquka kwamafilimu e-PE ziwavumela ukuba ahambisane nokunyakaza okuphawulekayo komkhiqizo ngaphandle kokudabuka noma ukulahlekelwa ubuqotho besivalo. Lesi sici sibonakala sibaluleke ngokukhethekile ekusetshenzisweni kokupakisha okuhilela ukudla okufriziwe, lapho ukushintshashintsha kwamazinga okushisa kubangela imijikelezo yokwanda nokucinana okungase kuphazamise izinto zokupakisha ezingaguquguquki kangako.
Izici Zokusebenza Nezindinganiso Zokuhlola
Izakhiwo Zokucinana Nokufana
Izici zokucinana kwezinhlobo ezahlukene zefilimu ziyahlukahluka kakhulu ngobukhulu nangokufana, ezithinta ngokuqondile ukubukeka kokugcina kwephakethe nezinga lokuvikela. Amafilimu e-PVC ngokuvamile abonisa amazinga okugoba phakathi kuka-40% no-60% kokubili ohlangothini lomshini nolwe-transverse, anikeza ukugoba okulinganiselayo okuhambisana kahle nemikhiqizo engunxande ne-cylindrical. I-module yokucinana ehlangene inciphisa ukucindezelwa okungaholela ekuhlulekeni kwefilimu noma ekuhlanekezeleni.
Imithombo ye-POF ibonisa ukungena okulawulwayo kwezinkinga ezahlukene kusuka ku-30% ku-50%, ngokuphelele kakhulu okunciphisa ukuchazwa kwepakethi noma kunjalo ngeendidi zezinto eziphucukileyo. Isayensi sangaphakathi sokuphindaphindwa kwe-polymer iqinisekisa ukuthi izikhono zokungena ziphindaphindeka ngokulinganayo phambi kwesayensi yefilimu, zikhubaza amathuba esizinda esibi noma iindlela ezinezidingo eziphambili engenzelwa ngazo iphakamiso epheleleyo.
Izilingo nezimali eziqinileyo
Ukulinganisa ubunzima kubonisa amahlu ohlu lwangaphakathi phakathi kweendidi zefilimu, i-POF ingaba inemeko elungileyo kuzo zombini izimbini: umdalo wokwenza nokuhlola ngokuphambene. Iindlela ezilandelwayo ze-ASTM zibonisa ukuthi iifilimu ze-POF zilondoloza izilingo ezinye ngokuphazanyiswa komgca ngaphezu kwe-PVC noma i-PE, zibonisa ukuthula okungaphezulu kwezihluku kanye nokunyusa kwezihluku ngexesha lokusebenzisa kanye nomphakathi.
Ukuhlaziywa kwezivivinyo kubonisa ukuthi i-PE films zihlaza kakhulu emisebenzini inqolobane ngezivivinyo ezimangalisayo noma ukungena, ngelapho i-PVC inika ivivinyo ephakeme kwezikhathi eziphambileyo phansi kwezivivinyo ezigcwele. Le miphazanyo yemisebenzi ihola ukukhethwa kwemithombo ngokwemithwalo efanayo nemigomo yezivivinyo ezihlaziywa ngalunye ulwazi olusekelwe kumthwalo.
Imikhuba Yekhetho Elingakananiwe Ngemisebenzi
Izidingo Zokupakiwa Kwesithixo
Imisebenzi yokupakisha isithixo iyinca izidingo ezibophelela ngokuhlangabezana nokuzinzisisa kwemithombo, amathulwa okugaya, nekufaneleka nembali engcinwa ngendlela esisodwa ibala ukukhethwa kwefilimu. Izinhlelo eziqashelwe ngu-FDA zihlanza ukuthi imithombo yokupakisha ihlanze izimo ezibophelela ekuxhumene ngqo nesithixo, ngelapho amathulwa okugaya avikela kusabalalwa kwezimali, ukungena kwe-oksijini, nokulahlekelwa kusuka kumehluko.
Ukuzinza kwezinga lokushisa kuba okubalulekile ekusetshenzisweni kokudla lapho imikhiqizo ephakejiwe ingase ibhekane nezimo zokubanda, ukufakwa eqandeni noma ukufakwa ukushisa. Amafilimu e-POF abonisa ukusebenza kahle kakhulu kulo lonke uhla lokushisa olutholakala ekusakazweni kokudla, agcina ukuphelela kwe-seal nokucaca okubonakalayo kusuka ekugcinweni okubandayo ngokusebenzisa izibuko zokubonisa ezishisayo.
Imikhiqizo Yezimboni Neyabathengi
Izicelo zokupakisha ezimbonini zivame ukubeka phambili amandla nokumelana namakhemikhali kunezakhiwo ze-optical, okwenza amafilimu e-PE abe ukukhetha okuthandwayo kwezicelo eziningi ezisindayo. Ukumelana nokugqobhoza okuphezulu kwe-PE kwenza kube nemiphetho ebukhali, izingxenye eziqhumayo, namaphuzu angahlelekile avamile emikhiqizweni yezimboni, kuyilapho ukumelana namakhemikhali kuqinisekisa ukuhambisana nezinhlobo eziningi zamakhemikhali womkhiqizo.
Izinto zobuchwepheshe obuhle kanye nezimpahla ezidayiswayo ziyazuza ekucaciseni okuvelele nasekunyathelisweni kwamafilimu e-PVC ne-POF, okwenza kube lula ukwethula umkhiqizo nokuxhumana ngomkhiqizo endaweni yokuthengisa. Ikhono lokwakha amaphakethe aqinile, angenamvuthuluka lithuthukisa ikhwalithi yomkhiqizo obonwayo ngenkathi inikeza ubufakazi bokuphazamiseka nokuvikelwa othulini nasekonakaleni kokuphatha.
Ukucabangela Ezomnotho Nokuhlaziya Izindleko
Izindleko Zokwakha
Izindleko zezinto zokusetshenziswa ziyahlukahluka kakhulu phakathi kwezinhlobo zefilimu, i-PVC ngokuvamile iyindlela eyonga kakhulu ekusetshenzisweni kwevolumu enkulu lapho izidingo zokusebenza zihambisana namakhono ezinto. Nokho, ukuhlaziywa kwezindleko eziphelele kufanele kubandakanye ukucatshangelwa kokucubungula, amazinga okuchithwa, nezindleko ezingaba khona zokulandela imithetho ezingathinta ukulingana kwezomnotho jikelele.
Izimodi zika-POF zihlala zilondoloza izindleko kahle kodwa zahlinzekela ukuthi kunciphise izindleko zomthelela ngokwenza izindleko zokuphakelisa kunciphise. Iqondo elinamandla kakhulu le-POF licinca inhlangothi yomfanekiso, kanti ikhulula ukusebenzisa umfanekiso omncane ngaphandle kokuchitha iqhaza elikhulu.
Ukukhangelwa Kwe-Efficiency
Ukubaluleka kwebhinqa nokukhangelwa kwezimali kubaluleka kakhulu ekubeni kuholelwe izindleko ezifana nezinye izinhlotshwa zomfanekiso. Izimodi ze-PVC zisebenza kahle ngezinhlotshwa zasekhaya kodwa kudingeka kudweshelwe uhlelo oluthe futhi ukuhlanjelwa kwamafutha, lokhu kongezisa izindleko zeqembu nezindleko zoksebenza. Izimodi ze-POF zisebenza kahle emva kwezinkanyezi ezincane, zicinca izindleko zokunyanga kanti zicimelela ukuthi akudingeki uhlelo oluthile lokucima amafutha.
Izindlela zokuxhasa ziphazanyiswa phakathi kwezimboni, ngaphandle kwemithombo yezimbo ephinde iphinde ibe nemvume yokugcwalisa okuphezulu okunciphisa umkhawulo wokubalisa. Umthelelelo phakathi kohamukazi lwebhenge, ubunzima bomsebenzi, nokudinga kwezixhobo kuyakala ukwahlula indlela eqondene ngezimali kuyo yonke indlela ethile nezimo zokwakha.
Ukusetyenziswa kwezindlela ezinhle kunye nokuhlola Okophandle Kwemvelo
Imikhuba yokubuyisela kumsebenzi nokukhululwa
Izidingo zolwandle zihlukanisa kakhulu ukukhethwa kwebhenge njengamathuba afuna ukuncipha inkumbulo yabo ye-carbon futhi uqophele izibophongo zokuphila ngokuphila kahle. I-PE ne-POF zinikeza imikhuba yokubuyisela kumsebenzi engaphezu kuka-PVC, ihlanganisa ngempelweni yobunkohlwa baka-polyolefin ngaphandle kokudinga izixhobo ezithile noma ukudala iingxaki zokulahlekelwa.
Izinketho zokupaka kakhulu ezifelwe kuyizinhlobo ezahlukene zezinto, ngakho izilimi ze-polyolefin zenza izimboni eziphulayo zokuphindezwa kwamandla xa ziphinyiswa. Ukuphinyiswa kwe-PVC kudinga iziseko ezithile ezinamathuba okusula izigas eziphuthethayo, ekungcolisa izinketho zokupaka kakhulu futhi kungenza ukuthi izindleko zokuphatha izimali ziphakeme kubantu abathanda ukwenzela okwempilo yesidima.
Ukuchazwa Kwesilingo SeCarbon
Izidingo zomandla wokwakha ne-efficiency yokuthutha kusiza ekugcineni isimo sesidalwa seziqhamo ezahlukene. Izici ezincane zezinhlelo-mveliso ephuthumayo ze-POF zikhipha ukusetshenziswa kwezinto ngalunye uhlelo olukhuni ngenkathi libe yilapho, ngalesikhathi kuphazanyiswa isilingo se-carbon esihlobene nokwakha kwezinto ezibalulekile nokuthutha.
Kusetshenziswa kwezimali zokuphatha kuyahluka phakathi kwezinhloso ngqozi yesimo sezulu sokuvula kanye nokwaziwa kohlelo. Ukuphathwa okuncane kwezimali ze-POF kunciphisa ukusetshenziswa kwezimali ngexesha lokwenza iphakheji, ngakho-ke kuvumela izilingo eziningi zokwakha okunciphisa impact ekugcineni umhlaba ngalunye uhlelo.
Imibuzo Evame Ukubuzwa
Iziphi izimo zezulu ezifaneleka kakhulu kuzilimi zonke?
Izibhamu ze-PVC zivula kahle phakathi kwe-250°F ne-300°F, kudinga ukuhlela kahle kwesimo sezulu ukuze kuphumelele ekushintshaneni ngaphandle kokuthinta kancane. Izibhamu ze-POF zisebenza kahle emva kwezimo ezingaphezu kwe-200°F ku-275°F, zinika amathuba okunciphisa ukusetshenziswa kwezimali kanye nesimo esihle esemgcini. Izibhamu ze-PE zidinga izimo ezinye zokuvula, njengoko 275°F ku-350°F, kodwa zinika imfundo engcono uma ziqashelwe kahle futhi ziphinde ziphinde.
Ngikufunda kanjani ubude bezibhamu okufanele ngempilo yami?
Ukukhethwa kwebhodhi yefilimu kubangelwa ngumbane wendalo, ubunjingilingili bezigaba, nezidingo zokuphatha ngexesha lokunyuswa. Izinto ezilula ngezigaba ezizimeleyo zifuna kakhulu izifilimi ezingama-60-75 gauge, ngelixa izinto ezikhulu okanye ezingezigaba ezijulile zingadinga izimvo ezingama-100 gauge okanye ezenene. Izi-filim ze-POF zazinzima ukunciphisa ibhodi ngaphandle kokuchaphazela ukuvikelwa ngamandla aqinileyo.
Ingaba iintsimbi ezahlukeneyo zefilimu zingasetyenziswa kwiindlela efanayo zokupakisha?
Iindawo ezininzi zemfuko zasekuhlaleni zilandela iintsimbi ezahlukeneyo zefilimu ngokutshintsha kwesithembiso sesithuthi nokushota kwegunya. Kodwa, ukutshintsha phakathi kweentsimbi kunokufuna uguquko lwendlela, ikakhulu xa ushintsha ukusuka ku-PVC ku-POF ngokuba kuneengcinga ezahlukileyo zomoya. Cinga nabagcini bendlala ukugcina imfuno enye yokulinganisana kwaye nokuguquko okudingekayo kwegunya elivalelweyo.
Ziziphi iziphumo ezibalulekileyo ekufuneka ziphanyekwe ngexesha lokwenza?
Iziparamitha ezibalulekile zokubaluleka kufaka phakathi ubumfihlakuse, ukulahlekelwa okulinganayo, ukucaciswa kwezibonakude, nokubonakala kwephakheji. Kufanele ukuchazwa kuqhubekisa ukulungiswa kwebhodhi yesimiso, amathuba wokulahlekwa, nokudla okufanelekile kwi-tunnel ngaphansi kwebandla. Ukugcina izilingo efanayo zokunika izinto nezinklinga ze-tunnel kusivumela ukuthi phakheji ibe yilimali engcono futhi kuhlale kunciphisa ukulahlekwa kwemali kanye nokuzinza kwesimo.