Ubushushu shwabanisa iilebhile zefilimuzieleyibhile zefilimu ezicekethekileyo eziprintwe kwiifilim zeplastiki okanye iityhubhu kusetyenziswa i-inki ekhethekileyo. Ngexesha lenkqubo yokuleyibhela, xa ishushubezwa (malunga ne-70 ℃), ileyibhile yokushwabana ishwabana ngokukhawuleza ecaleni kwecontour yangaphandle yesikhongozeli kwaye ibambelele ngokuqinileyo kumphezulu wesikhongozeli. Iileyibhile zefilimu ezicuthayo ubushushu ziquka ikakhulu iileyibhile zemikhono yokuncipha kunye neelebhile zokusonga.
Iimpawu zomsebenzi
Ileyibhile yomkhono wokushrinkage yileyibhile eyicylindrical eyenziwe ngefilimu yokuncipha kobushushu njenge substrate, eprintwayo emva koko yenziwe. Inophawu lokusetyenziswa ngokufanelekileyo kwaye ifaneleke ngokugqithisileyo kwizikhongozeli ezimile okwezodwa. Iilebhile zemikhono efinyeziweyo zifuna izixhobo zokuleyibhela ezikhethekileyo ukugquma ileyibhile eprintiweyo kwisikhongozeli. Okokuqala, isixhobo sokuleyibhile sivula ileyibhile ye-cylindrical sleeve etywiniweyo, enokuthi ngamanye amaxesha ifune ukugrunjwa; Emva koko, yinqumle ileyibhile kwiisayizi ezifanelekileyo kwaye uyibeke kwisitya; Emva koko sebenzisa umphunga, i-infrared, okanye iziteshi zomoya oshushu kunyango lobushushu ukuze uncamathisele ileyibhile kumphezulu wesikhongozeli.
Ngenxa yokukhanya okuphezulu kwefilimu ngokwayo, ileyibhile inombala oqaqambileyo nocwebezelayo. Nangona kunjalo, ngenxa yesidingo sokunciphisa ngexesha lokusetyenziswa, kukho i-drawback ye-deformation deformation, ngakumbi kwiimveliso eziprintiweyo kunye nokumakishwa kwebhakhowudi. Uyilo olungqongqo kunye nolawulo lomgangatho wokushicilela kufuneka lwenziwe, ngaphandle koko ukuguqulwa kwepateni kuya kubangela ukuba umgangatho webhakhowudi ungafanelanga. Iileyibhile zokusonga ezicuthayo zinokubhalwa kusetyenziswa izixhobo zokuleyibheli zemveli, ezifuna ukusetyenziswa kwezinto ezincamathelayo kunye namaqondo obushushu aphezulu ngexesha lenkqubo yokuleyibhela. Ngethuba lenkqubo ye-shrinkage, i-adhesive eshushu encibilikayo ikhethwa ngenxa yoxinzelelo olwenziwa yi-adhesive kwiindawo ezidibeneyo zefilimu.
Ukuveliswa kwangaphambili
Ngenxa yokuba ifilimu ye-heat shrink ifilimu ye-thermoplastic ejoliswe ngokugqithisa ngexesha lokuvelisa kunye nokunciphisa ngexesha lokusetyenziswa. Ke ngoko, kungakhathaliseki ukuba yeyiphi indlela yoshicilelo esetyenziselwa ushicilelo, phambi kokuyila ipateni yomphezulu, izinga lokucutheka elithe tyaba nelithe nkqo, kunye neempazamo zoguquko ezivumelekileyo kumacala ahlukeneyo emizobo yokuhombisa kunye nokubhaliweyo emva kokushwabana, kufuneka kuthathelwe ingqalelo. ukuqinisekisa ubuyiselo oluchanekileyo lwepateni, okubhaliweyo, kunye nebhakhowudi eshwabeneyo kwisikhongozeli.
Isalathiso sepateni
Ingaba ifilimu yokunciphisa ubushushu iprintwa usebenzisa i-gravure printing okanye i-flexographic printing, ukuprintwa kwayo ikakhulu kwindlela yokushicilela yangaphakathi, kwaye isalathiso esinxulumene nephethini kwi-plate yokushicilela kufuneka ibe yinto enhle. Kule mihla, kukho iifilimu ezicuthayo zokuprintwa komphezulu. Kule meko, ulwalathiso lwepateni kwi-plate yokushicilela kufuneka lutshintshwe.
Uluhlu lweepateni
Ngenxa yokulinganiselwa kokuprintwa kwe-flexographic, ukuba ifilimu ye-shrink ishicilelwe usebenzisa i-flexographic printing, inqanaba lomfanekiso akufanele libe lincinci, ngelixa ukusebenzisa ukuprintwa kwe-gravure kunokufuna umgangatho ocebileyo womfanekiso.
Uyilo lwemilinganiselo
Izinga lokucutheka elinqamlezayo lezinto zefilimu ezicutha ubushushu ezisetyenziselwa ukuprinta yi-50% ukuya kwi-52% kunye ne-60% ukuya kuma-62%, kwaye inokufikelela kwi-90% phantsi kweemeko ezizodwa. Ireyithi yokucutheka kwexesha elide kufuneka ibe yi-6% ukuya kwi-8%. Nangona kunjalo, ngexesha lokunciphisa ngokukhawuleza kwefilimu, ngenxa yokulinganiselwa kwesitya, izikhokelo ezithe tye kunye nezithe nkqo azikwazi ukuvunyelwa ngokupheleleyo. Ukuqinisekisa ukubuyiswa ngokuchanekileyo kwepateni yemvumelwano, isicatshulwa, kunye nebhakhowudi, kuyimfuneko ukuqwalasela imilo yesitya kwaye ubale ubungakanani obuchanekileyo kunye nezinga lokuguqulwa ngokusekelwe kwimeko yangempela. Kwiileyibhile zokunciphisa ubushushu ezifuna ukuguqula iifilimu ezifana nephepha zibe yimilo ye-cylindrical kunye nokutywina iindawo ezidibeneyo kunye ne-adhesive, kubalulekile ukuqaphela ukuba akukho graphics okanye isicatshulwa kufuneka siyilwe kwiindawo zokutywinwa ukuphepha ukuchaphazela amandla okudibanisa.
Ukubekwa kwebhakhowudi
Ngokuqhelekileyo, indlela yokubeka ikhowudi yebhakhowudi kufuneka ihambelane nesikhokelo sokushicilela, ngaphandle koko kuya kubangela ukuphazamiseka kwemigca yebhakhowudi, eya kuchaphazela iziphumo zokuskena kwaye ibangele ukufunda kakubi. Ukongeza, ukukhethwa kombala weemveliso zeeleyibhile kufuneka kugxininise kwimibala yebala kangangoko kunokwenzeka, kwaye ukuveliswa kweenguqulelo ezimhlophe kuyimfuneko, enokwenziwa ngokupheleleyo okanye engenanto ngokwemeko yangempela. Umbala webhakhowudi kufuneka ulandele iimfuno eziqhelekileyo, oko kukuthi, ukudityaniswa kombala wemivalo kunye nezithuba kufuneka kuhambelane nomgaqo wokulinganisa umbala webhakhowudi. Ukukhethwa kwezinto zokushicilela. Ukuprintwa kweelebhile zokunciphisa ubushushu kuhlalutywe ngokufutshane, kwaye ngaphandle kokulawula inkqubo yoshicilelo kakuhle, izinto zidlala indima eqinisekileyo kumgangatho wayo. Ngoko ke, ukukhetha izixhobo ezifanelekileyo kubalulekile. Ukugqiba ubukhulu bezinto zefilimu ngokusekelwe kwintsimi yesicelo, iindleko, iimpawu zefilimu, ukusebenza kwe-shrinkage, inkqubo yokushicilela, kunye neemfuno zenkqubo yokubhala iileyibhile zokushisa ukushisa. Imfuno eqhelekileyo yokwenza iileyibhile zefilimu ezicuthayo kukuba ubukhulu befilimu kufuneka bube phakathi kwe-microns ezingama-30 kunye ne-70 microns, kunye ne-50 microns, i-45 microns, kunye ne-40 microns zisetyenziswa ngokuqhelekileyo. Ubukhulu obuthile buxhomekeke ekusebenzeni kophawu lwesixhobo sokuleyibheli. Kwimathiriyeli yeleyibhile ekhethiweyo, ngokuqhelekileyo kufunwa ukuba izinga lokucutheka kwezinto zefilimu lingaphakathi koluhlu lwesicelo, kunye nesantya sokunciphisa (TD) siphezulu kunomlinganiselo we-longitudinal (MD) wokucutha. Amazinga okunciphisa asecaleni kwezinto ezisetyenziswa ngokuqhelekileyo yi-50% ukuya kwi-52% kunye ne-60% ukuya kwi-62%, kwaye inokufikelela kwi-90% kwiimeko ezizodwa. Ireyithi yokucutheka kwelongitudinal kufuneka ibe phakathi kwe-6% kunye ne-8%. Ukongezelela, ngenxa yokukhathazeka okuphezulu kwefilimu yokunciphisa ukushisa, kubalulekile ukuphepha ukushisa okuphezulu ngexesha lokugcinwa, ukuprintwa kunye nokuthutha.
Ushicilelo oluyimfuneko
Ngokungafaniyo neeleyibhile zephepha, ifilimu yokuncipha kobushushu isebenzisa izixhobo zokuprinta ezingafunxayo ezifanaI-PVC, i-PP, i-PETG, i-OPS, i-OPP, kunye neefilim ezahlukeneyo ze-co-layer co extruded. Iimpawu zezi zinto zigqiba ukuba inkqubo yazo yokushicilela yahlukile kwiilebhile zephepha. Kushicilelo lwemveli lwe-offset, ushicilelo lwe-flexographic (ukuprintwa kwe-flexographic), ushicilelo lwe-gravure, kunye noshicilelo lwesikrini sesilika, indlela yokushicilela iilebhile zefilimu ezicutha ubushushu iseyiyona nto iphambili yokuprinta igravure. Isizathu esona sizathu kukuba kukho inani elikhulu koomatshini bokushicilela basekhaya, kwaye ukhuphiswano lweendleko zokushicilela lunzima. Ukongeza, iimveliso zoshicilelo lwe-gravure zineempawu zomaleko we-inki eshinyeneyo, imibala eqaqambileyo, kunye neeleyibhile ezityebileyo, kwaye ezi ntlobo zeelebhile ziprintwa kakhulu ziipleyiti ezinde. Ushicilelo lwegravure lunokumelana nezigidi zamaphepha, Ngoko ke kumacandelo aphilayo anomthamo omkhulu wokushicilela, ngokungathandabuzekiyo lolona lubiza kakhulu. Nangona kunjalo, ngokuqiniswa kokhuphiswano lweemarike kunye nokuphuhliswa kobuchwepheshe obufana nokwenza ipleyiti ye-flexographic, oomatshini, kunye ne-inki, umlinganiselo wokuprintwa kwe-flexographic uyanda unyaka nonyaka. Kodwa ngokwembono yomthengi, okubaluleke ngakumbi kukuhlangabezana nemigangatho yomgangatho, ukunciphisa iindleko, kunye nokukhetha indlela efanelekileyo yokushicilela.
Ukulawula uxinzelelo
Ngenxa yokuba iifilimu ezibhityileyo zichaphazeleka ngakumbi kutshintsho loxinzelelo ngexesha lenkqubo yoshicilelo, okukhokelela kubhaliso olungachanekanga, kubalulekile ukunikela ingqalelo kulawulo loxinzelelo ngexesha lenkqubo yokushicilela ukugcina uzinzo kunye nokulungelelana koxinzelelo. Ubungakanani bohlengahlengiso loxinzelelo kufuneka bumiselwe ngokusekelwe kuhlobo kunye namandla okuqina kwefilimu. Umzekelo, ukuba amandla okuqina efilim abuthathaka kwaye athambekele kwi-tensile deformation, uxinzelelo kufuneka lube luncinci ngokwentelekiso; Kwiifilimu ezinamandla okuqina okuqina, uxinzelelo lunokwandiswa ngokufanayo. Kwimeko yohlobo oluthile lwefilimu, ububanzi kunye nobukhulu befilimu zizinto ezibalulekileyo ezibonisa ubungakanani boxinzelelo. Iifilimu ezibanzi kufuneka zibe noxinzelelo olukhulu kuneefilim ezimxinwa, ngelixa iifilim ezishinyeneyo zinoxinzelelo olukhulu kuneefilim ezincinci.
Ifilimu yokucutha ubushushu beGravure isebenzisa ubukhulu becala oomatshini bokushicilela bohlobo lwegravure, ngoku abaxhotyiswe ngeenkqubo zolawulo loxinzelelo oluzenzekelayo kunye neenkqubo zolawulo lobhaliso oluzenzekelayo. Ngokusekwe kwimpazamo elinganisiweyo phakathi kwamanqaku okubhaliswa kombala, ukunyanzeliswa kwindawo yokukhutshwa, indawo yokuprinta, kunye nendawo yokujija ilungiswa ngokuzenzekelayo ukuze kuqinisekiswe ukuxinana okuzinzileyo kwinkqubo yoshicilelo kunye nokuchaneka koshicilelo lokugqibela. Xa kuthelekiswa nomatshini wokuprinta kunye nohlobo lweyunithi ye-flexographic yokushicilela, uhlobo lwe-CI oomatshini bokushicilela be-flexographic bafaneleke ngakumbi ukusebenzisa iifilimu ze-flexographic heat shrink. Oku kungenxa yokuba ngexesha lenkqubo yoshicilelo, iqela ngalinye lombala labelana ngegubu eliqhelekileyo lokuprinta, kwaye i-substrate imprinting kunye nedrum yokuprinta idityaniswe ngokuqinileyo, kunye notshintsho oluncinci kuxinzelelo, okukhokelela kwi-deformation encinci ye-tensile yezinto kunye nokuchaneka okuphezulu kobhaliso.
Ukukhetha i-inki
Kukho iintlobo ezine eziphambili zee-inki ezisetyenziselwa ukucutha ukuprintwa kwefilimu: ii-inks ezisekwe kwi-solvent, i-inks esekwe emanzini, ii-inks ze-UV ze-cationic, kunye nee-inks ze-UV ezisimahla. Ngokubhekiselele kwisicelo, ii-inks ezisekelwe kwi-solvent zilawula kwintsimi yokushicilela ileyibhile yefilimu, elandelwa yi-inki esekelwe emanzini kunye nee-inks ze-UV ezikhululekile. Nangona kunjalo, ii-inks ze-cationic ze-UV azisetyenziswanga ngokubanzi kwintsimi yefilimu eyanciphayo ngenxa yexabiso labo eliphezulu kunye nobunzima bokushicilela. I-inki esekelwe kwi-solvent isetyenziselwa ubukhulu becala kwiifilimu ezinciphisa ukushisa kwi-gravure kunye ne-flexographic printing. Iifilimu ezahlukeneyo kufuneka zisebenzise i-inki ekhethekileyo kwaye ayinakuxutywa. Iinkampani ze-inki ngokubanzi zibonelela ngemilinganiselo emithathu yokunyibilika kwe-inki ehambelana nemathiriyeli eyahlukeneyo: ukomisa ngokukhawuleza, ukomisa okuphakathi, kunye nokomisa kancinci. Iifektri zokushicilela zinokukhetha umlinganiselo ofanelekileyo we-solvent ngokusekelwe kwiimeko zangempela zemveliso ezifana nobushushu beworkshop kunye nesantya sokushicilela. Ukongeza, i-inki esekwe emanzini kunye ne-UV ingasetyenziswa. Nangona kunjalo, kungakhathaliseki ukuba luhlobo luni lwe-inki esetyenzisiweyo, kuyimfuneko ukuqwalasela ngokupheleleyo ukuba izibonakaliso zokusebenza ze-inki kufuneka zihlangabezane neemfuno. Ngokomzekelo, izinga lokuncipha kwe-inki kufuneka lihambelane neempawu ze-shrinkage zefilimu yokunciphisa ukushisa, ngaphandle koko kunokubangela ukuba i-inki ihlukane okanye ideyinki.
Ukulawula ubushushu bokumisa
Kubaluleke kakhulu ukulawula ukushisa kokumisa kakuhle xa ushicilela ubushushu bokunciphisa iifilimu. Ukuba ukushisa kokumisa kuphezulu kakhulu, izinto eziphathekayo ziya kuba ne-thermal shrinkage; Ukuba iqondo lokushisa liphantsi kakhulu, i-inki ayiyi kumisa ngokwaneleyo, kubangele ukunamathela kokugqibela kunye nokungcola ngasemva. Izixhobo zokomisa umbala zifakwe kumatshini wokuprinta we-gravure kunye ne-flexographic ukuqinisekisa ukomiswa okupheleleyo kombala ngamnye we-inki. Ngelo xesha, ukwenzela ukuthintela ukuguqulwa kwezinto ngexesha lokumisa, kuyimfuneko ukuseta iziteshi zomoya ezibandayo phakathi kwemibala yombala ukulawula impembelelo yokushisa okushiyekileyo. Kule mihla, iigubu ezikhenkcezisiweyo zisetyenziswa koomatshini bokushicilela, abanokunciphisa ngokukhawuleza ubushushu bezinto eziphathekayo ngexesha lokushicilela. Ngenxa yokufaneleka koshicilelo oluqhelekileyo lweefilimu ezicuthayo, ezinjengozinzo oluqinileyo lwekhemikhali, amandla asezantsi angaphezulu, umphezulu ogudileyo ngaphandle kokufunxwa, kunye nokungahambelani kakuhle ne-inki yokushicilela. Ke ngoko, nokuba yeyiphi na indlela yoshicilelo esetyenzisiweyo, ifilimu kufuneka ingene kunyango lokukhutshwa komphezulu we-corona ukuze iphucule amandla ayo angaphezulu kunye noburhabaxa, kunye nokuphucula ukuncamathela kwe-inki kumphezulu wezinto eziphathekayo.
Ixesha lokuposa: Jan-25-2024
