Inqubo eyisisekelo yokulungiselela izikhwama zokupakisha ezihlanganisiwe ihlukaniswe ngezinyathelo ezine: ukuphrinta, i-laminating, i-slitting, isikhwama sokwenza izikhwama, okuyizo izinqubo ezimbili ze-laminating nokwenza isikhwama yizinqubo ezibalulekile ezithinta ukusebenza komkhiqizo wokugcina.
Inqubo yokuhlanganisa
Ukuklama inqubo yokupakisha umkhiqizo, ngaphezu kokukhethwa okulungile kwezinhlobonhlobo zama-substrates, ukukhetha okunamathelayo okuyinhlanganisela nakho kubalulekile, ngokuya ngokusetshenziswa kwemikhiqizo, ukwakheka, izimo zangemuva kokucubungula, izidingo zekhwalithi zokukhethwa kwekhwalithi. Khetha i-adhesive engalungile, kungakhathaliseki ukuthi ubuchwepheshe bokucubungula obuhlanganisiwe buphelele kangakanani, kuzophinde kubangele imiphumela emibi, kanye nokucubungula ngemuva kokunciphisa amandla, ngaphansi kwamandla ahlanganisiwe, ukuvuza, izikhwama eziphukile nokunye ukwehluleka.
Ukukhethwa kokupakishwa kwamakhemikhali okuguquguqukayo kwansuku zonke nge-adhesives ukucabangela izici ezihlukahlukene, ngokuvamile, njenge-adhesive composite kufanele kuhlangabezane nezimo ezilandelayo.:
Ayinabuthi
Akukho okukhishwe okuyingozi okuvela ngemva kokupakisha uketshezi.
Isebenza ezidingweni zokushisa zokugcina ukudla.
ukumelana nesimo sezulu esihle, akukho okuphuzi kanye namabhamuza, akukho chalking kanye delamination.
ukumelana namafutha, ama-flavour, uviniga notshwala.
Akukho ukuguguleka kukayinki wephethini yokuphrinta, okulindeleke ukuthi ube nokuhlobana okuphezulu kukayinki.
Ngaphezu kwalokho, ukumelana nokuguguleka, okuqukethwe kuqukethe inani elikhulu lezinongo, utshwala, amanzi, ushukela, ama-fatty acids, njll., izakhiwo zabo ziyahlukahluka, kungenzeka ukuthi zingene ngesendlalelo sangaphakathi sefilimu eyinhlanganisela ibe isendlalelo sokunamathisela. , okubangela ukulimala kokugqwala, okuholela e-delamination yesikhwama sokupakisha, ukulimala kokuhluleka. Ngenxa yalokho, i-adhesive kumele ibe nekhono lokumelana nokuguguleka kwezinto ezingenhla, ihlale igcina amandla okwanele e-adhesive peel.
Izindlela zokucubungula ifilimu yepulasitiki yindlela eyinhlanganisela eyomile, indlela eyinhlanganisela emanzi, indlela yenhlanganisela ye-extrusion, indlela yenhlanganisela eshisayo encibilikayo kanye nendlela yenhlanganisela ye-co-extrusion nezinye ezimbalwa..
1, Ukuhlanganisa okomile
I-Dry lamination method iyindlela evame kakhulu yokufaka i-plastic packaging lamination. Ngaphansi kwezimo ezithile zokushisa, ukungezwani kanye nesivinini, i-substrate yokuqala igcwaliswa ngokufanayo ngongqimba lwe-adhesive-based adhesive (i-adhesive eshisayo encibilikayo enengxenye eyodwa noma i-adhesive esebenzayo yezingxenye ezimbili), ngemva komshini wokubhaka umshini wokugcoba (uhlukaniswe ezindaweni ezintathu. : indawo yokuhwamuka, indawo eqinile kanye nokungafakwa kwendawo yephunga) ukuze i-solvent ihwamuke futhi yome, bese kuba ngamarola okucindezela ashisayo, esimweni sokucindezela okushisayo kanye ne-substrate yesibili (ifilimu yepulasitiki, iphepha noma i-aluminium foil) ihlanganiswe ibe ifilimu eyinhlanganisela.
I-lamination eyomile ingalaminate noma yiluphi uhlobo lwefilimu, futhi ingathatha indawo yekhono lokuhlanganisa izinto zokupakisha ezisebenza kahle ngokwezidingo zenjongo kuye ngokuqukethwe. Ngakho-ke, ekufakweni, ikakhulukazi emaphaketheni amakhemikhali nsuku zonke kuye kwaxazululwa ukuthuthukiswa.
2,Ukuhlanganisa okumanzi
Indlela ehlanganisiwe emanzi iyinhlanganisela ye-substrate (ifilimu yepulasitiki, i-aluminium foil) ehlanganiswe nongqimba lwe-adhesive ebusweni, uma i-adhesive ayimile, ngokusebenzisa i-roller yokucindezela nezinye izinto (iphepha, i-cellophane) inhlanganisela, bese yomiswa. ngemuva kwehhavini ibe yifilimu eyinhlanganisela.
Inqubo yenhlanganisela emanzi ilula, inokunamathela okuncane, izindleko eziphansi, ukusebenza kahle kwenhlanganisela ephezulu, futhi ayifaki isincibilikisi esiyinsalela.
Umshini we-laminating ohlanganisiwe omanzi kanye nesimiso sokusebenza esisetshenziswayo kanye nendlela eyomile eyinhlanganisela ngokuyisisekelo iyafana, umehluko uyi-substrate yokuqala ehlanganiswe neglue, okokuqala nge-substrate yesibili ehlanganiswe ne-laminated composite, bese yomiswa kuhhavini. Isilinganiso esilula, esinamathelisi esincane, isivinini esihlanganisayo, imikhiqizo eyinhlanganisela ayinazo izincibilikisi ezisele, enye indlela yokungcola endaweni ezungezile.
3. Ukuhlanganiswa kwe-Extrusion
I-Extrusion compounding iyindlela evamile kakhulu yokuhlanganiswa kwenqubo, ukusetshenziswa kwe-resin ye-thermoplastic njengempahla eluhlaza, i-resin iyashiswa futhi inyibilika ibe yisikhunta, ngomlomo we-die esikhundleni sokuphulukiswa kweshidi lefilimu, ngokushesha ngemva kokuhlanganiswa nolunye uhlobo. noma amafilimu amabili ndawonye, bese epholile futhi ephulukisiwe. I-Multi-layer co-extrusion lamination iyinhlobonhlobo yezakhiwo ze-plastic resin ngokusebenzisa okungaphezu kwe-extruder co-extrusion, ku-die lamination kufilimu.
Izinto ezihlanganisiwe zijwayele izinkinga nezixazululo zekhwalithi
Ukuhlanganiswa kuyinqubo ebalulekile ekukhiqizeni nasekucubunguleni ukupakishwa okuguquguqukayo, ukwehluleka kwayo okuvamile yilezi: ukukhiqizwa kwamabhamuza omoya, ukushesha okuphansi kokuhlanganisa, imikhiqizo eqediwe eshwabene futhi egoqwe imiphetho, imikhiqizo eyinhlanganisela yokwelula noma ukuncipha, njll. Lesi sigaba sizogxila ekuhlaziyeni ukushwabana, imiphetho egoqiwe yezimbangela nezindlela zokuqeda.
1. Isimo sokushwabana
Ekuhlulekeni kwenhlanganisela eyomile yalesi simo kuthatha ingxenye enkulu yokwehluleka kuthinta ngqo ikhwalithi yokwenziwa kwesikhwama somkhiqizo ophelile.
Izizathu ezinkulu zalokhu kwehluleka yilezi ezilandelayo.
Izinga eliphansi lezinto eziyinhlanganisela noma i-substrate yokunyathelisa ngokwayo, ukuchezuka kobukhulu, amaroli efilimu ayaxega emikhawulweni yomibili futhi aqine ekugcineni ngenxa yokushuba kwamasondo okungalingani. Uma ivolumu yefilimu ihlukaniswa nokunwebeka kwenkulu, emshinini, ifilimu phezulu naphansi futhi i-amplitude yokubeka kwesokunxele nesokudla nayo inkulu kakhulu ngoba lapho impahla ingena phakathi kwesigubhu esishisayo nama-rollers ashisayo, ayikwazi. ilingane nama-rollers okucindezela ashisayo, ngakho-ke ayikwazi ukucindezelwa isicaba, okuholela ekuqedweni kwenhlanganisela eshwabene, imigqa etshekile, okuholela ekulahlekeni komkhiqizo. Lapho izinto eziyinhlanganisela ziyi-PE noma i-CPP, uma ukuphambuka kokuqina kungaphezu kwe-10μm, kulula futhi ukushwabana, ngalesi sikhathi, ukungezwani kwezinto ezihlanganisiwe kungandiswa ngokufanele, futhi i-roller ecindezelayo eshisayo ingaba yisimo esivundlile. okwe-extrusion. Kodwa-ke, kufanele kuqashelwe ukuthi ukungezwani kufanele kube okufanelekile, ukungezwani okukhulu kulula ukwenza into eyinhlanganisela ibe yinde, okuholela ekutheni umlomo wesikhwama utshekele ngaphakathi. Uma ukuchezuka kobukhulu bezinto ezihlanganisiwe kukhulu kakhulu, angeke kusetshenziswe ngempela, kufanele kubhekwane nakho.
2. Amabala amhlophe ayinhlanganisela
Njengomphumela wezinga lokumbozwa kwe-inki elibi amabala amhlophe: kuyinki oyinhlanganisela omhlophe, lapho ukumuncwa kukayinki kuguquguquka kodwa kungaguquguquki okubangelwa amachashazi amhlophe, atholakalayo ukuze kuthuthukiswe umthamo wokomisa wendlela; uma kusekhona amachashazi amhlophe, ikhambi elivamile ukuthuthukisa ukumbozwa kweyinki emhlophe, njengokuhlola ukucoleka kukayinki omhlophe, ngoba ukucoleka kokugaya kwezinga lokufakwa kukayinki omuhle kunamandla.
I-Adhesive esikhundleni samachashazi amhlophe akhiqizwa ngokungalingani: kungqimba lukayinki oluboshwe ngeglue, ngenxa yokungena uyinki kuzomunca i-solvent, ukungezwani kwendawo futhi kuncane kune-substrate, ukulinganisa akulungile njengefilimu ekhanyayo ehlanganiswe neglue, i-glue depressions. futhi i-aluminium-plated noma i-aluminium foil ayilingani eduze, ikhombisa ukukhanya ngebhamuza lapho ihlangana nesigaba, izohlehla noma isakaze ukubukeka kwayo, ukwakheka. yamabala amhlophe. Isixazululo singasetshenziselwa ukushelela ukugqoka nge-roller ye-rubber efanayo, noma ukwandisa inani lokushintshwa.
3. Ibhamuza elihlanganisiwe
Amabhamuza ahlanganisiwe akhiqizwa ezimweni ezilandelayo nezindlela ezihambisanayo.
Amabhamuza ayinhlanganisela kumkhuba
1. ifilimu embi, kufanele ithuthukise ukugxila kokunamathela kanye nenani lokushintshwa, i-MST, i-KPT ebusweni akulula ukumanzisa, kulula ukukhiqiza ama-bubbles, ikakhulukazi ebusika. Amabhamuza omoya kuyinki,kungabasebenzisa indlela yokwandisa inani le-adhesive ukususa.
2,Iqhubu nebhamuza likayinki, kufanele kuhlanganiswe izinga lokushisa elihlanganisa ifilimu kanye nokucindezela okuhlanganisiwe ukuze kwande.
I-3, inani lokwengeza i-glue ebusweni bukayinki liphansi, kufanele likhulise isikhathi sokunamathisela i-roller pressure kanye nokusetshenziswa kwama-roller abushelelezi, ukushisa kwefilimu okwanele ukunciphisa isivinini sokuhlanganisa, khetha i-glue enhle yokumanzisa kanye nokukhetha okulungile kweyinki. .
4. Izithasiselo (i-lubricant, i-agent ye-antistatic) efilimini zingenwa yiglue, ngakho-ke kufanele ukhethe iglue enesisindo esikhulu samangqamuzana nokuphulukisa ngokushesha, ukwandise ukugxila kweglue, uphakamise izinga lokushisa kuhhavini ukuze usule ngokuphelele ingcina, futhi ungasebenzisi ifilimu enesikhathi esingaphezu kwezinyanga ezi-3, ngoba ukwelashwa kwe-corona kulahlekile.
5,Izinga lokushisa ebusika liphansi, ukuhlanganiswa kwefilimu nokudluliswa kweyinki, ukusetha kabusha umphumela wokuqondanisa akukuhle, ngakho indawo yokusebenza igcina izinga lokushisa elithile.
6,Izinga lokushisa lokumisa liphezulu kakhulu, i-blistering ye-adhesive noma i-crusting yesikhumba esingaphezulu kwenzeka, futhi ngaphakathi akusomile, ngakho-ke izinga lokushisa lokumisa lokunamathisela kufanele lilungiswe.
7. Umoya ufakwe phakathi kwefilimu ye-rollers ehlanganisiwe, izinga lokushisa lama-rollers ahlanganisiwe kufanele linyuswe futhi i-angle ehlanganisiwe kufanele ihlakazwe (ifilimu inzima futhi kulula ukukhiqiza ama-bubbles uma inzima).
8,Ngenxa yesithiyo sefilimu ephezulu, igesi ye-CO2 ekhiqizwe ukuphulukiswa okunamathelayo, okusele kufilimu eyinhlanganisela, engaphrintiwe ku-bubble, kufanele ithuthukise inani le-ejenti yokwelapha, ukuze ingcina yokwelapha isomile.
9. I-glycolic acid ku-raber iyi-solvent enhle yokugcwalisa inki, irabha incibilikisa uyinki, futhi kukhona amagwebu kuyinki kuphela, okufanele agweme ukungena kwamanzi enjoloba futhi athuthukise izinga lokushisa lenjoloba ukunciphisa. ukuchithwa kukayinki.
4, Amandla e-peel abuthakathaka
Amandla e-peel ampofu, ngenxa yokuphulukiswa okungaphelele, noma inani leglue lincane kakhulu, noma uyinki osetshenzisiwe kanye ne-adhesive ayihambisani nesimo, nakuba ukuphulukiswa sekuqediwe, kodwa phakathi kwezingqimba ezimbili zefilimu eyinhlanganisela ngenxa ukuntuleka kobude kuye kwanciphisa ukuncishiswa kwamandla.
Inani lomjovo weglue lincane kakhulu, isilinganiso se-adhesive sincishisiwe, ingcina iyancipha endaweni yokugcina, amanzi notshwala kuhlanganiswe ku-glue, abasizi befilimu bayancishiswa, inqubo yokomisa noma yokuvuthwa ayikho endaweni. , njll., okuzoholela ezicini zokugcina zokunciphisa amandla ekhasi eliyinhlanganisela.
Naka isitoreji esifanele se-glue, isikhathi eside kakhulu asikho ngaphezu konyaka ongu-1 (i-tin ingavalwa); vimbela izinto zangaphandle ukuthi zingangeni ku-glue, ikakhulukazi amanzi, utshwala, njll, okungabangela ukwehluleka kweglue. Ifilimu efanelekile yokuthuthukisa inani le-glue enamathela; thuthukisa ivolumu yomoya wokushisa okomisa, unciphise ijubane lokuhlanganisa. Ukwelashwa kwesibili kwendawo yefilimu ukuthuthukisa ukungezwani kwendawo; ukunciphisa ukusetshenziswa kwezithasiselo endaweni ehlanganisa ifilimu. Zonke lezi zindlela zingasisiza ukuba sithuthukise inkinga yokungaqini kahle kwekhasi lenhlanganisela.
5. Ukushisa uphawu kubi
Isikhwama esihlanganisiwe sokushisa seal ukusebenza okubi futhi izimbangela zakhona ngokuyisisekelo yizimo ezilandelayo.
Amandla okuvalwa kokushisa mancane. Izizathu eziyinhloko zalesi simo azelapheki ngokuphelele noma izinga lokushisa lokuvalwa kokushisa liphansi kakhulu. Lungiselela inqubo yokwelapha noma ukhuphule izinga lokushisa lommese wokuvala ngokufanelekile kungathuthukisa inkinga.
I-Delamination yekhava yophawu lokushisa kanye nenkomba ye-refractive. Isizathu esiyinhloko salesi simo ukubopha ayelashwa. Lungisa isikhathi sokwelapha noma ulungise okuqukethwe komenzeli olaphayo kungathuthukisa le nkinga.
Ukungavuleki kahle / ukungavuleki kahle kwefilimu yongqimba yangaphakathi. Imbangela yalesi simo i-ejenti yokuvula encane kakhulu, eholela ekusetshenzisweni okuningi (isilungisi) kanye nendawo yefilimu enamathelayo noma enamafutha. Le nkinga ingathuthukiswa ngokwandisa inani le-ejenti yokuvula, ukulungisa inani lesilungisi, nokugwema ukungcoliswa kwesibili endaweni yefilimu.
Isiphetho
Siyabonga ngokufunda kwakho, sithemba ukuthi sinethuba lokuba ozakwethu.
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Isikhathi sokuthumela: Apr-01-2022