Ngokwanda kwamabhizinisi asebenzisa imishini yokupakisha ezenzakalelayo enesivinini esikhulu, izinkinga zekhwalithi ezinjengokuphuka kwesikhwama, ukuqhekeka, ukubola, ukuvala ukushisa okubuthakathaka, kanye nokungcola okuvama ukwenzeka enqubweni yokupakisha ezenzakalelayo enesivinini esikhulu yokuguquguquka.ifilimu yokupakishakancane kancane ziye zaba yizinkinga zezinqubo ezibalulekile amabhizinisi okudingeka azilawule.
Lapho ukhiqiza ifilimu yokugoqa yemishini yokupakisha ezenzakalelayo enesivinini esikhulu, amabhizinisi okupakisha aguquguqukayo kufanele anake amaphuzu alandelayo:
Ukukhetha izinto eziqinile
1. Izidingo zezinto ezibonakalayo zesendlalelo ngasinye sefilimu egoqiwe
Ngenxa yesakhiwo semishini ehlukene yomshini wokupakisha ozenzakalelayo wesivinini esikhulu uma kuqhathaniswa neminye imishini yokwenza izikhwama, ukucindezela kwawo kuncike kuphela emandleni ama-roller amabili noma amapheshana okucindezela ashisayo acindezelana ukuze afinyelele ukuvala ukushisa, futhi akukho mshini wokupholisa. Ifilimu yongqimba yokuphrinta ithintana ngqo nedivayisi yokuvala ukushisa ngaphandle kokuvikelwa kwendwangu yokufaka. Ngakho-ke, ukukhethwa kwezinto zokwakha ungqimba ngalunye lwesigubhu sokuphrinta ngesivinini kubaluleke kakhulu.
2. Ezinye izici zokuqukethwe kufanele zihambisane nalokhu:
1) Ibhalansi yokuqina kwefilimu
Ukujiya, ukujiya okumaphakathi, nokubekezelela ukujiya okumaphakathi kwefilimu yepulasitiki ekugcineni kuncike ekulinganiseni kokuqina kwayo yonke ifilimu. Enqubweni yokukhiqiza, ukufana kokuqina kwefilimu kufanele kulawulwe kahle, ngaphandle kwalokho umkhiqizo okhiqiziwe awuwona umkhiqizo omuhle. Umkhiqizo omuhle kufanele ube nogqinsi olulinganiselayo kuzo zombili izikhombisi-ndlela ze-longitudinal neziphambene. Ngenxa yokuthi izinhlobo ezahlukene zamafilimu zinemiphumela ehlukene, ukujiya kwawo okumaphakathi nokubekezelelana kogqinsi okumaphakathi nakho kuhlukile. Umehluko wogqinsi phakathi kwezinhlangothi ezingakwesokunxele nezingakwesokudla zefilimu yokupakisha ezenzakalelayo enesivinini esikhulu ngokuvamile awubi ngaphezu kuka-15um.
2) Izakhiwo ze-Optical zamafilimu amancane
Isho ubumnyama, ukukhanya, nokudluliswa kokukhanya kwefilimu elincanyana.
Ngakho-ke, kunezidingo ezikhethekile nezilawuli zokukhethwa kanye nenani lezithasiselo ze-masterbatch ekugingqeni ifilimu, kanye nokubonakala okuhle. Ngesikhathi esifanayo, ukuvulwa nokushelela kwefilimu kufanele kucatshangelwe. Inani lokuvula kufanele lisekelwe esimisweni sokwenza lula ukusonga nokuvula ifilimu nokuvimbela ukunamathela phakathi kwamafilimu. Uma inani lengezwe kakhulu, lizophazamisa ukwanda kwenkungu yefilimu. Ukuba sobala kufanele kufinyelele ku-92% noma ngaphezulu.
3) I-friction coefficient
I-coefficient of friction ihlukaniswe yaba ukungqubuzana okumile kanye nezinhlelo zokungqubuzana ashukumisayo. Ngemikhiqizo yokupakisha okuzenzakalelayo, ngaphezu kokuhlola i-coefficient yokungqubuzana ngaphansi kwezimo ezijwayelekile, i-coefficient yokushayisana phakathi kwefilimu nepuleti lensimbi engagqwali kufanele futhi ihlolwe. Njengoba ungqimba lokuvala ukushisa kwefilimu yokupakisha okuzenzakalelayo luthintana ngqo nomshini wokubumba wokupakisha ozenzakalelayo, i-coefficient yayo eguquguqukayo yokungqubuzana kufanele ibe ngaphansi kuka-0.4u.
4) Engeza umthamo
Ngokuvamile, kufanele ilawulwe ngaphakathi kwe-300-500PPm. Uma incane kakhulu, izothinta ukusebenza kwefilimu njengokuvula, futhi uma inkulu kakhulu, izolimaza amandla ahlanganisiwe. Futhi kuyadingeka ukuvimbela inani elikhulu lokufuduka noma ukungena kwezithasiselo ngesikhathi sokusetshenziswa. Lapho umthamo uphakathi kuka-500-800ppm, kufanele usetshenziswe ngokuqapha. Uma umthamo udlula u-800ppm, ngokuvamile awusetshenziswa.
5) Ukuncipha okuvumelanayo nokuvumelanayo kwefilimu eyinhlanganisela
Ukuncipha okungeyona i-synchronous kubonakala ekushintsheni kokugoqa okubalulekile kanye nokungqubuzana. I-non-synchronous shrinkage inezinhlobo ezimbili zokukhuluma: "i-curling yangaphakathi" noma "i-curling yangaphandle" yokuvula isikhwama. Lesi simo sibonisa ukuthi kusekhona ukuncipha kwe-asynchronous ngaphakathi kwefilimu eyinhlanganisela ngaphezu kokuncipha kokuvumelanisa (okunosayizi abahlukene nezikhombisi-ndlela zokucindezeleka okushisayo noma izinga lokuncipha). Ngakho-ke, lapho uthenga amafilimu amancane, kuyadingeka ukwenza izivivinyo ezishisayo (ukushisa okumanzi) kwe-shrinkage longitudinal kanye ne-transverse ezintweni ezihlukahlukene eziyinhlanganisela ngaphansi kwezimo ezifanayo, futhi umehluko phakathi kokubili akufanele ube mkhulu kakhulu, mhlawumbe cishe ngo-0.5%.
Izizathu Zokulimala Nokulawula Amasu
1. Umthelela wokushisa okuvalwa kokushisa emandleni okuvalwa kokushisa yiwona oqondile kakhulu
Izinga lokushisa elincibilikayo lezinto ezihlukahlukene linquma ngokuqondile izinga lokushisa elincane lokuvala ukushisa kwezikhwama eziyinhlanganisela.
Phakathi nenqubo yokukhiqiza, ngenxa yezici ezihlukahlukene ezifana nokucindezela kokuvalwa kokushisa, isivinini sokwenza isikhwama, nobukhulu bendawo engaphansi eyinhlanganisela, izinga lokushisa langempela lokuvalwa kokushisa elisetshenziswayo livame ukuba phezulu kunezinga lokushisa elincibilikayo.ukushisa uphawu impahla. Umshini wokupakisha ozenzakalelayo osheshayo, onengcindezi ephansi yokuvala ukushisa, udinga izinga lokushisa eliphakeme lokuvala ukushisa; Ukushesha kwejubane lomshini, kushuba indawo engaphezulu yefilimu eyinhlanganisela, kanye nezinga lokushisa elidingekayo lokuvala uphawu.
2. Ijika lokunamathela elishisayo lamandla okubopha
Emaphaketheni azenzakalelayo, okuqukethwe okugcwalisiwe kuzoba nomthelela onamandla phansi kwesikhwama. Uma iphansi lesikhwama lingakwazi ukumelana namandla omthelela, lizoqhekeka.
Amandla okuvalwa okushisa okuvamile abhekisela emandleni okubopha ngemva kokuba amafilimu amabili azacile ehlanganiswe ndawonye ngokuvala ukushisa futhi apholiswe ngokuphelele. Kodwa-ke, emugqeni wokukhiqiza wokupakisha othomathikhi, izinto zokupakisha ezinezendlalelo ezimbili azitholanga isikhathi esanele sokupholisa, ngakho-ke amandla okuvalwa kokushisa kwezinto zokupakisha awafanele ukuhlola ukusebenza kokuvalwa kokushisa kwezinto lapha. Esikhundleni salokho, ukunamathela okushisayo, okubhekisela kumandla okuxebuka kwengxenye yokushisa evalwe ngaphambi kokupholisa, kufanele kusetshenziswe njengesisekelo sokukhetha izinto zokuvala ukushisa, ukuze kuhlangatshezwane nezidingo zamandla okuvala ukushisa kwento ngesikhathi sokugcwalisa.
Kunephuzu lokushisa elilungile lokufinyelela ukunamathela okushisayo okuhle kakhulu kwezinto zefilimu elincanyana, futhi lapho izinga lokushisa lokuvalwa kokushisa lidlula leli phuzu lokushisa, ukunamathela okushisayo kuzobonisa umkhuba oyanciphayo. Emgqeni wokukhiqiza wokupakisha othomathikhi, ukukhiqizwa kwezikhwama zokupakisha eziguquguqukayo cishe kuvumelaniswe nokugcwaliswa kokuqukethwe. Ngakho-ke, lapho ugcwalisa okuqukethwe, ingxenye yokushisa evalwe ngaphansi kwesikhwama ayipholile ngokuphelele, futhi amandla omthelela angamelana nawo ayancipha kakhulu.
Lapho ugcwalisa okuqukethwe, kumandla omthelela angaphansi kwesikhwama sokupakisha esiguquguqukayo, i-thermal adhesion tester ingasetshenziswa ukudweba ijika lokunamathela elishisayo ngokulungisa izinga lokushisa lokufaka uphawu lokushisa, ingcindezi yokuvala ukushisa, kanye nesikhathi sokuvala ukushisa, bese ukhetha inhlanganisela efanele yemingcele yokuvala ukushisa komugqa wokukhiqiza.
Lapho upakisha izinto ezisindayo ezipakishiwe noma eziyimpuphu njengosawoti, okokuhlanza izingubo, njll., ngemva kokugcwalisa lezi zinto nangaphambi kokuvalwa kokushisa, umoya ongaphakathi kwesikhwama kufanele ukhululwe ukuze unciphise ukucindezeleka odongeni lwesikhwama sokupakisha, okuvumela ukuthi izinto eziqinile zibe. ugcizelele ngokuqondile ukunciphisa umonakalo wesikhwama. Enqubweni yokucubungula emva kokucubungula, ukunakwa okukhethekile kufanele kukhokhwe ukuthi ukumelana nokubhoboza, ukumelana nokucindezela, ukumelana nokwehla kokuphuka, ukumelana nezinga lokushisa, ukumelana nokushisa okuphakathi nendawo, nokuphepha kokudla kanye nokusebenza kwenhlanzeko kuhlangabezana nezidingo.
Izizathu kanye nezindawo zokulawula zokuhlukanisa
Inkinga enkulu ngemishini yokupakisha ezenzakalelayo yokugoqa ifilimu nokufaka izikhwama ukuthi indawo engaphezulu, ifilimu ephrintiwe, kanye nongqimba olumaphakathi lwe-aluminium foil kujwayele ukuncipha endaweni evalwe ngokushisa. Ngokuvamile, ngemva kokwenzeka kwalesi simo, umenzi uzokhononda enkampanini yokupakisha ethambile mayelana namandla anganele ayinhlanganisela yezinto zokupakisha abazihlinzekayo. Inkampani yokupakisha ethambile izophinde ikhononde kumkhiqizi we-inki noma wokunamathisela mayelana nokunamathela okubi, kanye nomkhiqizi wefilimu mayelana nenani eliphansi lokwelashwa kwe-corona, izithasiselo ezintantayo, nokumuncwa komswakama okunzima kwezinto, okuthinta ukunamathela kukayinki kanye i-adhesive futhi ibangele i-delamination.
Lapha, kudingeka sicabangele esinye isici esibalulekile:i-roller yokuqinisa ukushisa.
Izinga lokushisa le-roller evala uphawu lokushisa lomshini wokupakisha othomathikhi ngezinye izikhathi lifinyelela ku-210 ℃ noma ngaphezulu, futhi iphethini yommese wokufaka uphawu okushisa wokuvala uphawu kwe-roller ingahlukaniswa ibe izinhlobo ezimbili: ukwakheka kwephiramidi yesikwele kanye nesimo se-frustum yesikwele.
Singabona engilazini yokukhulisa ukuthi amanye amasampula anezingqimba nangezona ezendlalelo anezindonga ze-roller mesh ezingaguquki kanye nezingezansi zembobo ecacile, kuyilapho amanye anezindonga ze-roller mesh ezingaphelele kanye nezingezansi zembobo ezingacacile. Ezinye izimbobo zinemigqa emnyama engajwayelekile (imifantu) ngezansi, okuyizinsalela zongqimba lwe-aluminium foil oluphukayo. Futhi ezinye izimbobo ze-mesh zine-bottom "engalingani", okubonisa ukuthi ungqimba lweyinki ngaphansi kwesikhwama luye lwabhekana "nokuncibilika".
Isibonelo, ifilimu ye-BOPA kanye ne-AL kokubili kuyizinto ezinezinto ezine-ductility ethile, kodwa ziyaphuka ngesikhathi sokucutshungulwa zibe izikhwama, okubonisa ukuthi ukwelulwa kwempahla yokupakisha esetshenziswa ngommese wokuvala ukushisa kudlule izinga elamukelekayo lempahla, okuholela ekutheni ukudabuka. Kusukela ekugxilweni kophawu lokushisa, kuyabonakala ukuthi umbala we-aluminium foil ungqimba phakathi "kwe-crack" ulula ngokuphawulekayo kunohlangothi, okubonisa ukuthi i-delamination yenzekile.
Ekukhiqizeni kweifilimu ye-aluminium foil rollemaphaketheni, abanye abantu bakholelwa ukuthi ukujulisa iphethini yokuvala ukushisa kubukeka kangcono. Eqinisweni, inhloso eyinhloko yokusebenzisa ummese wokuvalwa kokushisa onephethini ukuze uvale ukushisa ukuqinisekisa ukusebenza kokuvala uphawu lokushisa, futhi ubuhle bungokwesibili. Noma ngabe kuyibhizinisi lokukhiqiza lokupakisha eliguquguqukayo noma ibhizinisi lokukhiqiza impahla eluhlaza, ngeke baguqule kalula ifomula yokukhiqiza ngesikhathi senqubo yokukhiqiza, ngaphandle uma belungisa inqubo yokukhiqiza noma benze izinguquko ezibalulekile ezintweni ezingavuthiwe.
Uma ungqimba lwe-aluminium foil luchotshozwa futhi iphakheji ilahlekelwa ukuvaleka kwayo, kusizani ukuba nokubukeka okuhle? Ngokombono wezobuchwepheshe, iphethini yommese wokuvala ukushisa akumele ibe nokwakheka kwephiramidi, kodwa kufanele ibe nokumise okwe-frustum.
Iphansi lephethini elimise okwephiramidi linamakhona acijile, anganwaya kalula ifilimu futhi ayenze ilahlekelwe injongo yayo yokuvala ukushisa. Ngesikhathi esifanayo, ukumelana nezinga lokushisa kukayinki osetshenzisiwe kufanele kudlule izinga lokushisa lensimbi yokuvala ukushisa ukuze kugwenywe inkinga yokuncibilika kukayinki ngemva kokuvalwa kokushisa. Izinga lokushisa elijwayelekile lokuvala uphawu kufanele lilawulwe phakathi kuka-170 ~ 210 ℃. Uma izinga lokushisa liphezulu kakhulu, i-aluminium foil ijwayele ukushwabana, ukuqhekeka, kanye nokuguquka kombala.
Izinyathelo zokuphepha zokusonga isigubhu esinqunyiwe esiyinhlanganisela esingancibiliki
Lapho ugoqa ifilimu eliyinhlanganisela engena-solvent, ukujikajika kufanele kube kucocekile, ngaphandle kwalokho umhubhe uthambekele ukwenzeka emaphethelweni avulekile okujikajika. Lapho i-taper ye-tension ephendukayo isethwe ibe mncane kakhulu, ungqimba lwangaphandle luzokhiqiza amandla amakhulu okucindezela kungqimba lwangaphakathi. Uma amandla okungqubuzana phakathi kwezingqimba zangaphakathi nezingaphandle zefilimu eyinhlanganisela mancane ngemva kokusonteka (uma ifilimu ibushelelezi kakhulu, amandla okungqubuzana azoba mancane), isenzakalo esisongayo se-extrusion sizokwenzeka. Uma isethiwe i-taper yokuqina yokuqina enkulu, i-winging ingaphinda ihlanzeke.
Ngakho-ke, ukufana okusongayo kwamafilimu ayinhlanganisela angenawo ancibilikisiwe kuhlobene nesilungiselelo sepharamitha yokungezwani namandla okungqubuzana phakathi kwezingqimba zefilimu eziyinhlanganisela. I-friction coefficient yefilimu ye-PE esetshenziselwa amafilimu ayinhlanganisela angancibiliki ngokuvamile ingaphansi kuka-0.1 ukuze ulawule i-coefficient yokungqubuzana kwefilimu yokugcina eyinhlanganisela.
Ifilimu yepulasitiki eyinhlanganisela yepulasitiki ecutshungulwe ngokucutshungulwa kwenhlanganisela engancibilikiyo izoba namaphutha athile okubukeka njengamachashaza okunamathela phezulu. Uma ihlolwe esikhwameni esisodwa sokupakisha, iwumkhiqizo oqeqeshiwe. Kodwa-ke, ngemva kokupakisha okuqukethwe okunamathelayo okunombala omnyama, lezi zinkinga zokubukeka zizovela njengamachashaza amhlophe.
Isiphetho
Izinkinga ezivame kakhulu ngesikhathi sokupakishwa okuzenzakalelayo kwesivinini esikhulu ukuphuka kwezikhwama kanye ne-delamination. Nakuba izinga lokuphuka ngokuvamile lingeqi ku-0.2% ngokwezindinganiso zamazwe ngamazwe, ukulahlekelwa okubangelwa ukungcoliswa kwezinye izinto ngenxa yokuphuka kwezikhwama kubi kakhulu. Ngakho-ke, ngokuhlola ukusebenza kokuvalwa kokushisa kwezinto zokwakha kanye nokulungisa imingcele yokuvala ukushisa enqubweni yokukhiqiza, amathuba okulimala kwesikhwama sokupakisha esithambile ngesikhathi sokugcwalisa noma ukugcinwa, ukucubungula, kanye nokuthutha kungancishiswa. Nokho, kufanele kuqashelwe ngokukhethekile lezi zindaba ezilandelayo:
I-1) Kufanele kuqashelwe ngokukhethekile ukuthi izinto zokugcwalisa zizongcolisa uphawu ngesikhathi sokugcwalisa. Ukungcola kunganciphisa kakhulu ukunamathela okushisayo noma amandla okuvala impahla, okuholela ekuqhekekeni kwesikhwama sokupakisha esiguquguqukayo ngenxa yokungakwazi ukumelana nokucindezela. Ukunakwa okukhethekile kufanele kukhokhwe ezintweni zokugcwalisa i-powder, ezidinga ukuhlolwa okuhambisanayo kokulingisa.
2) I-adhesion eshisayo eshisayo kanye namandla okufaka uphawu okushisa anwetshiwe atholakala ngomugqa wokukhiqiza okhethiwe wamapharamitha wokuvala ukushisa kufanele ashiye umkhawulo ngesisekelo sezidingo zokuklama (ukuhlaziywa okuqondile kufanele kwenziwe ngokuya ngemishini nesimo sezinto ezibonakalayo), ngoba noma ngabe izingxenye zokuvala ukushisa noma izinto zefilimu zokupakisha ezithambile, ukufana akukuhle kakhulu, futhi amaphutha aqoqiwe azoholela kumphumela wokufaka uphawu wokushisa ongalingani ekushiseni kokupakisha. indawo yokubeka uphawu.
I-3) Ngokuhlola ukunamathela okushisayo nokwandisa amandla okuvalwa kokushisa kwezinto, isethi yemingcele yokuvala ukushisa efanele imikhiqizo ethile kanye nemigqa yokukhiqiza ingatholakala. Ngalesi sikhathi, ukucatshangelwa okuphelele kanye nokukhetha okuphelele kufanele kwenziwe ngokusekelwe kwijika lokuvala ukushisa okubalulekile okutholwe ekuhlolweni.
I-4) Ukuqhekeka nokuhlukaniswa kwezikhwama zokupakisha eziguquguqukayo zepulasitiki kuwukubonakaliswa okuphelele kwezinto, izinqubo zokukhiqiza, imingcele yokukhiqiza, kanye nemisebenzi yokukhiqiza. Kungemva kokuhlaziywa okuningiliziwe kuphela lapho kungabonakala khona izimbangela zangempela zokuqhekeka kanye ne-delamination. Amazinga kufanele asungulwe lapho kuthengwa izinto ezingavuthiwe neziyisizayo futhi kuthuthukiswa izinqubo zokukhiqiza. Ngokugcina amarekhodi amahle asekuqaleni kanye nokuthuthuka ngokuqhubekayo ngesikhathi sokukhiqiza, izinga lomonakalo wezikhwama zokupakisha eziguquguqukayo zepulasitiki lingalawulwa libe sezingeni elifanele phakathi kwebanga elithile.
Isikhathi sokuthumela: Dec-02-2024