Ngamashishini amaninzi nangakumbi asebenzisa oomatshini bokupakisha abazenzekelayo ngesantya esiphezulu, iingxaki ezisemgangathweni ezinje ngokuqhekeka kwengxowa, ukuqhekeka, ukudilizwa, ukutywinwa kobushushu obubuthathaka, kunye nokutywinwa kokutywinwa okuhlala kusenzeka kwinkqubo yokupakisha ngokuzenzekelayo eguquguqukayo.ifilimu yokupakishaithe ngokuthe ngcembe ibe yimiba engundoqo yenkqubo ekufuneka amashishini ayilawule.
Xa usenza ifilimu eqengqelekayo koomatshini bokupakisha abazenzekelayo ngesantya esiphezulu, amashishini okupakisha aguquguqukayo kufuneka anikele ingqalelo kula manqaku alandelayo:
Ukukhetha izinto ezingqongqo
1. Iimfuno zezinto eziphathekayo kuluhlu ngalunye lwefilimu eqengqelekayo
Ngenxa yesakhiwo sezixhobo ezahlukeneyo zomatshini wokupakisha ngokuzenzekelayo xa kuthelekiswa nabanye oomatshini bokwenza ingxowa, uxinzelelo lwalo luxhomekeke kuphela kunyanzeliso lweerola ezimbini okanye imicu yokucofa eshushu ecudisana ukuze kufumaneke ukutywinwa kobushushu, kwaye akukho sixhobo sokupholisa. Ifilimu yomaleko wokushicilela iqhagamshelana ngokuthe ngqo nesixhobo sokutywinwa kobushushu ngaphandle kokukhuselwa kwelaphu lokugquma. Ngoko ke, ukukhethwa kwezixhobo zoluhlu ngalunye lomgqomo wokushicilela ngesantya esiphezulu kubaluleke kakhulu.
2. Ezinye iimpawu zemathiriyeli kufuneka zihambelane ne:
1) Ibhalansi yobunzima befilimu
Ubukhulu, ubukhulu obuphakathi, kunye nokunyamezela okuphakathi kobunzima befilimu yeplastiki ekugqibeleni kuxhomekeke kwibhalansi yobunzima befilimu yonke. Kwinkqubo yokuvelisa, ukufana kobunzima befilimu kufuneka kulawulwe kakuhle, ngaphandle koko imveliso eveliswayo ayiyona imveliso efanelekileyo. Imveliso elungileyo kufuneka ibe nobukhulu obulungeleleneyo kuzo zombini izikhokelo zelongitudinal kunye neziguquguqukayo. Ngenxa yokuba iintlobo ezahlukeneyo zeefilimu zineempembelelo ezahlukeneyo, ubukhulu bazo obuphakathi kunye nokunyamezela kobunzima obuphakathi nazo ziyahluka. Umahluko wobunzima phakathi kwamacala asekhohlo nasekunene efilimu yokupakisha ezenzekelayo enesantya esiphezulu ayibikho ngaphezulu kwe-15um.
2) Iimpawu ezibonakalayo zeefilimu ezincinci
Ibhekisa kwinkungu, ukungafihli, kunye nokuhanjiswa kokukhanya kwefilimu encinci.
Ke ngoko, kukho iimfuno ezikhethekileyo kunye nolawulo lokhetho kunye nesixa sezongezo ze-masterbatch kwifilimu eqengqelekayo, kunye nokungafihli kakuhle. Ngexesha elifanayo, ukuvulwa kunye nokulula kwefilimu kufuneka kuqwalaselwe. Isixa sokuvula kufuneka sisekelwe kumgaqo-nkqubo wokuququzelela ukuvuthwa kunye nokukhupha ifilimu kunye nokuthintela ukunamathela phakathi kweefilimu. Ukuba isixa songezwa kakhulu, siya kuchaphazela ukwanda kwenkungu yefilimu. Ukwenziwa kwezinto elubala kufuneka kufikelele kwi-92% okanye ngaphezulu.
3) I-coefficient ye-friction
I-coefficient of friction yahlulwe ibe yi-static friction kunye ne-dynamic systems friction. Kwiimveliso zokupakisha ngokuzenzekelayo, ngaphezu kokuvavanya i-coefficient ye-friction phantsi kweemeko eziqhelekileyo, i-coefficient ye-friction phakathi kwefilimu kunye ne-stainless steel plate kufuneka iphinde ihlolwe. Njengoko umaleko wokutywina obushushu wefilimu yokupakisha ngokuzenzekelayo unxibelelana ngokuthe ngqo nomatshini wokubumba wokupakisha, i-coefficient yayo yokruthakruthwano eguqukayo kufuneka ibe ngaphantsi kwe-0.4u.
4) Yongeza umthamo
Ngokuqhelekileyo, kufuneka ilawulwe ngaphakathi kwe-300-500PPm. Ukuba incinci kakhulu, iya kuchaphazela ukusebenza kwefilimu njengokuvulwa, kwaye ukuba ikhulu kakhulu, iya kulimaza amandla adibeneyo. Kwaye kuyimfuneko ukukhusela inani elikhulu lokufuduka okanye ukungena kwezongezo ngexesha lokusetyenziswa. Xa umthamo uphakathi kwe-500-800ppm, kufuneka isetyenziswe ngononophelo. Ukuba idosi idlula i-800ppm, ayisetyenziswa ngokubanzi.
5) I-synchronous kunye ne-asynchronous shrinkage yefilimu edibeneyo
I-shrinkage engekho synchronous ibonakala kwiinguqu ze-curling eziphathekayo kunye ne-warping. I-shrinkage engavumelaniyo ineendlela ezimbini zokuthetha: "i-curling yangaphakathi" okanye "i-curling yangaphandle" yokuvula isikhwama. Lo mbuso ubonisa ukuba kusekho i-asynchronous shrinkage ngaphakathi kwefilimu edibeneyo ukongeza kwi-synchronous shrinkage (kunye nobukhulu obuhlukeneyo kunye nezalathiso zoxinzelelo lwe-thermal okanye izinga lokunciphisa). Ngoko ke, xa kuthengwa iifilimu ezincinci, kuyimfuneko ukuqhuba i-thermal (ubushushu obumanzi) i-shrinkage longitudinal kunye neemvavanyo ezinqamlezayo kwizinto ezidibeneyo ezidibeneyo phantsi kweemeko ezifanayo, kwaye umehluko phakathi kwezi zibini akufanele ube kakhulu, ngokukodwa malunga ne-0.5%.
Izizathu zokonakaliswa kunye neendlela zokulawula
1. Isiphumo sobushushu bokuvalwa kobushushu kumandla okutywinwa kobushushu yeyona nto ithe ngqo
Iqondo lokushisa elinyibilikayo lezinto ezahlukeneyo lichaza ngokuthe ngqo ubushushu obuncinci bokutywinwa kobushushu beengxowa ezihlanganisiweyo.
Ngexesha lenkqubo yemveliso, ngenxa yezinto ezahlukeneyo ezinje ngoxinzelelo lokutywinwa kobushushu, isantya sokwenza ingxowa, kunye nobukhulu bendawo ehlanganisiweyo, elona qondo lobushushu lokutywinwa kobushushu elisetyenziswayo lihlala liphezulu kunobushushu obunyibilikayo.izinto zokutywinwa kobushushu. Umatshini wokupakisha ozenzekelayo okhawulezayo, kunye noxinzelelo oluphantsi lokutywinwa kobushushu, ufuna ubushushu obuphezulu bokutywinwa kobushushu; Isantya somatshini esikhawulezayo, kokukhona singqindilili imathiriyeli yomphezulu wefilimu ehlanganisiweyo, kwaye kokukhona ubushushu obufunekayo bokuvalwa kobushushu.
2. I-Thermal adhesion curve yamandla okudibanisa
Ekupakishweni ngokuzenzekelayo, iziqulatho ezizalisweyo ziya kuba nefuthe elinamandla ngaphantsi kwesikhwama. Ukuba i-bottom of the bag ayikwazi ukumelana namandla empembelelo, iya kuqhekeka.
Amandla okutywinwa kobushushu ngokubanzi abhekisa kumandla okudibanisa emva kokuba iifilimu ezimbini ezibhityileyo zidityaniswe ngokutywinwa kobushushu kwaye zipholile ngokupheleleyo. Nangona kunjalo, kumgca wemveliso yokupakisha ngokuzenzekelayo, izinto zokupakisha ezimbini azizange zifumane ixesha elaneleyo lokupholisa, ngoko ke amandla okutywinwa kobushushu bempahla yokupakisha ayifanelekanga ukuvavanya ukusebenza kokutywinwa kokushisa kwezinto apha. Endaweni yoko, i-thermal adhesion, ebhekisela kumandla okucoca ubushushu bento etywinwe inxalenye ngaphambi kokupholisa, kufuneka isetyenziswe njengesiseko sokukhetha izinto zokutywinwa kobushushu, ukwenzela ukuhlangabezana neemfuno zamandla okutywinwa kobushushu ngexesha lokuzaliswa.
Kukho iqondo lobushushu elilelona lifanelekileyo lokufumana eyona nto ilungileyo yokuncamathelisa i-thermal yezixhobo zefilimu ezibhityileyo, kwaye xa ubushushu bokutywinwa kobushushu budlula eli qondo lobushushu, ukuncamathela kwe-thermal kuya kubonisa ukwehla komgangatho. Kumgca wemveliso yokupakisha ngokuzenzekelayo, ukuveliswa kweengxowa zokupakisha eziguquguqukayo ziphantse zilungelelaniswe kunye nokuzaliswa kwezinto eziqulethweyo. Ngoko ke, xa ugcwalisa iziqulatho, inxalenye evaliweyo yokushisa ephantsi kwesikhwama ayipholiswanga ngokupheleleyo, kwaye amandla empembelelo anokumelana nawo ayancitshiswa kakhulu.
Xa ugcwalisa imixholo, kumandla empembelelo emazantsi ebhegi yokupakisha eguquguqukayo, umvavanyi wokuncamathela we-thermal ungasetyenziselwa ukuzoba ijika lokuncamathela elishushu ngokulungelelanisa ubushushu bokutywinwa kobushushu, uxinzelelo lokutywinwa kobushushu, kunye nexesha lokutywinwa kobushushu, kwaye ukhethe idibaniso efanelekileyo yokutywinwa kweeparamitha zobushushu kumgca wokuvelisa.
Xa upakisha izinto ezinzima ezipakishweyo okanye ezinomgubo ezifana netyuwa, i-detergent yokuhlamba iimpahla, njl., Emva kokuzalisa ezi zinto kwaye ngaphambi kokutywinwa kobushushu, umoya ongaphakathi kwesingxobo kufuneka ukhutshwe ukuze unciphise uxinzelelo kudonga lwengxowa yokupakisha, ukuvumela ukuba izinto eziqinileyo zibe. ugxininise ngokuthe ngqo ukunciphisa umonakalo wengxowa. Kwinkqubo ye-post-processing, ingqwalasela ekhethekileyo kufuneka ihlawulwe ukuba ngaba ukuchasana kwe-puncture, ukunyanzeliswa koxinzelelo, ukuxhathisa ukuphuka, ukumelana nobushushu, ukumelana nobushushu obuphakathi, kunye nokhuseleko lokutya kunye nokusebenza kococeko kuhlangabezana neemfuno.
Izizathu kunye neendawo zokulawula ukuhlelwa
Ingxaki enkulu ngoomatshini bokupakisha abazenzekelayo bokusonga ifilimu kunye nebhegi kukuba umphezulu, ifilimu eprintiweyo, kunye nomgangatho ophakathi wefoyile ye-aluminiyam idla ngokudityaniswa kwindawo etywinwe ubushushu. Ngokuqhelekileyo, emva kokuba le nto yenzekile, umenzi uya kukhalaza kwinkampani yokupakisha ethambileyo malunga nokungonelanga kwamandla adibeneyo ezinto zokupakisha ababonelela ngazo. Inkampani yokupakisha ethambileyo iyakukhalaza kwakhona kwi-inki okanye umenzi wokuncamathelisa malunga nokuncamathela okungalunganga, kunye nomenzi wefilimu malunga nexabiso eliphantsi lonyango lwe-corona, izongezo ezidadayo, kunye nokufunxa okubukhali kokufuma kwezixhobo, ezichaphazela ukuncamathela kweinki kunye incamathelisa kwaye ibangele delamination.
Apha, kufuneka siqwalasele enye inkalo ebalulekileyo:irola yokutywina ubushushu.
Ubushushu be-roller yokutywina ubushushu bomatshini wokupakisha ozenzekelayo ngamanye amaxesha bufikelela kuma-210 ℃ okanye ngaphezulu, kwaye ipateni yemela yokutywina ubushushu yokutywinwa kwe-roller inokwahlulwa ibe ziindidi ezimbini: imilo yephiramidi yesikwere kunye nemilo yefrustum yesikwere.
Siyabona kwiglasi yokukhulisa ukuba ezinye zeesampulu ezilayiweyo nezingenamaleko zineendonga zomnatha we-roller ococekileyo kunye nomzantsi ocacileyo wemingxuma, ngelixa ezinye zineendonga ezingaphelelanga ze-roller mesh kunye nomzantsi womngxuma ongacacanga. Eminye imingxunya inemigca emnyama engaqhelekanga (iintanda) ezantsi, eneneni izikhondo zomaleko wefoyile yealuminiyam eyaphukileyo. Kwaye ezinye imingxuma ye-mesh ine-bottom "engalinganiyo", ebonisa ukuba uluhlu lwe-inki olusezantsi kwesikhwama lufumene "i-melting" phenomenon.
Ngokomzekelo, ifilimu ye-BOPA kunye ne-AL zizinto zombini ezine-ductility ethile, kodwa ziphuka ngexesha lokuqhutyelwa kwiingxowa, ezibonisa ukuba ukunyuswa kwezinto zokupakisha ezisetyenziswa ngummese wokutywina ubushushu kugqithise kwinqanaba elamkelekileyo lezinto eziphathekayo, okubangele ukugqabhuka. Ukusuka kwitywina lobushushu, kunokubonwa ukuba umbala womaleko wefoyile ye-aluminium embindini "wokuqhekeka" ukhaphukhaphu ngakumbi kunecala, ebonisa ukuba i-delamination yenzekile.
Kwimveliso yeifilimu ye-aluminium foil rollukupakishwa, abanye abantu bakholelwa ukuba ukwenza nzulu ipateni yokutywina ubushushu kukhangeleka ngcono. Enyanisweni, eyona njongo iphambili yokusebenzisa ummese wokutywina ubushushu obunepateni ukutywinwa kobushushu kukuqinisekisa ukusebenza kokutywinwa kwesitywina sobushushu, kunye ne-aesthetics yesibini. Ingaba lishishini lemveliso yokupakisha eguquguqukayo okanye ishishini lokuvelisa izinto eziluhlaza, aziyi kutshintsha ngokulula ifomula yemveliso ngexesha lenkqubo yokuvelisa, ngaphandle kokuba bahlengahlengise inkqubo yokuvelisa okanye benze utshintsho olubalulekileyo kwizinto eziluhlaza.
Ukuba umaleko wefoyile ye-aluminiyam utyunyuziwe kwaye ukupakishwa kwayo kuphulukana nokutywinwa kwayo, kunceda ngantoni ukuba nenkangeleko entle? Ukusuka kwimbono yobugcisa, ipateni yemela yokutywina ubushushu ayifanele ibe yiphiramidi, kodwa kufuneka ibe yi-frustum.
Umzantsi wephethini emile okwephiramidi unekona ezibukhali, ezinokuthi zikrwele ngokulula ifilim kwaye zibangele ukuba ilahlekelwe yinjongo yayo yokutywina ubushushu. Kwangaxeshanye, ukumelana nobushushu be-inki esetyenzisiweyo kufuneka kudlule ubushushu bencakuba yokutywina ubushushu ukuthintela ingxaki yokunyibilika kwe-inki emva kokutywinwa kobushushu. Ubushushu obuqhelekileyo bokutywinwa kobushushu kufuneka bulawuleke phakathi kwe-170 ~ 210 ℃. Ukuba iqondo lobushushu liphezulu kakhulu, ifoyile yealuminiyam ithanda ukushwabana, ukuqhekeka, kunye nokujika kombala womphezulu.
Izilumkiso zokujija igubu lokucanda elihlanganisiweyo elinento enyibilikayo
Xa uqengqeleka ifilimu edibeneyo ene-solvent-free, i-winging kufuneka icoceke, kungenjalo i-tunneling ijwayele ukwenzeka kwimida evulekileyo yokujika. Xa i-taper yoxinzelelo olujikelezayo isetilwe incinci kakhulu, umaleko wangaphandle uya kuvelisa amandla amakhulu okucudisa kumaleko angaphakathi. Ukuba i-friction force phakathi kwe-inner and outside layers yefilimu ehlanganisiweyo incinci emva kokujija (ukuba ifilimu igudile kakhulu, i-friction force iya kuba yincinci), i-winding extrusion phenomenon iya kwenzeka. Xa itheyiphu yoxinzelelo olukhulu yomoya iseti, ukujikajika kungaphinda kucoceke.
Ngoko ke, ukufana okujikelezayo kweefilimu ezihlanganisiweyo ze-solvent-free zihambelana nokumisela ipharamitha yoxinzelelo kunye namandla okubetha phakathi kweengqimba zefilimu ezidibeneyo. I-coefficient ye-friction yefilimu ye-PE esetyenziselwa iifilimu ze-solvent-free composite ngokuqhelekileyo ingaphantsi kwe-0.1 ukulawula i-friction coefficient yefilimu yokugqibela edibeneyo.
Ifilimu yeplastiki edibeneyo yeplastiki eqhutywe yinkqubo ye-solvent-free composite iya kuba neziphene zokubonakala ezifana neendawo ezincamathelayo kumphezulu. Xa ivavanywa kwingxowa yokupakisha enye, yimveliso esemgangathweni. Nangona kunjalo, emva kokupakisha umxholo wokuncamathelisa onemibala emnyama, ezi ziphene zembonakalo ziya kubonakala njengamabala amhlophe.
Ukuqukumbela
Ezona ngxaki zixhaphakileyo ngexesha lokupakishwa okuzenzekelayo ngesantya esiphezulu kukuqhekeka kwengxowa kunye ne-delamination. Nangona izinga lokuqhekeka ngokuqhelekileyo alidluli i-0.2% ngokwemigangatho yamazwe ngamazwe, ilahleko ebangelwa ukungcoliswa kwezinye izinto ngenxa yokuphulwa kwengxowa zibi kakhulu. Ke ngoko, ngokuvavanya ukusebenza kokutywinwa kobushushu kwezixhobo kunye nokulungelelanisa iiparitha zokutywinwa kobushushu kwinkqubo yokuvelisa, amathuba omonakalo wengxowa yokupakisha ethambileyo ngexesha lokuzaliswa okanye ukugcinwa, ukucwangciswa kwangemva, kunye nokuthutha kunokuncitshiswa. Nangona kunjalo, ingqalelo ekhethekileyo kufuneka ihlawulwe kule miba ilandelayo:
I-1) Ingqwalasela ekhethekileyo kufuneka ihlawulwe ukuba ngaba izinto zokuzalisa ziya kungcolisa isitywina ngexesha lokuzaliswa. Ukungcola kunokunciphisa kakhulu ukubambelela kwe-thermal okanye ukutywinwa kwamandla ezinto eziphathekayo, okukhokelela ekuqhekekeni kwengxowa yokupakisha eguquguqukayo ngenxa yokungakwazi ukumelana noxinzelelo. Ingqwalasela ekhethekileyo kufuneka ihlawulwe kwizinto zokuzalisa umgubo, ezifuna iimvavanyo zokulinganisa ezihambelanayo.
2) I-adhesion thermal adhesion kunye nokwandisa amandla okutywinwa kobushushu afunyenwe ngomgca wemveliso okhethiweyo wokutywinwa kweeparamitha zokutywinwa kobushushu kufuneka ushiye umda othile ngokusekelwe kwiimfuno zoyilo (uhlalutyo oluthile kufuneka lwenziwe ngokuhambelana nesixhobo kunye nemeko yezinto eziphathekayo), kuba ingaba izinto zokutywina ubushushu okanye izinto ezithambileyo zokupakisha ifilimu, ukufana akukuhle kakhulu, kwaye iimpazamo eziqokelelweyo ziya kukhokelela kwisiphumo sokutywinwa kobushushu obungalinganiyo kubushushu bokupakisha. indawo yokutywina.
3) Ngokuvavanya ukunamathela kwe-thermal kunye nokwandiswa kwamandla okutywinwa kobushushu bezinto eziphathekayo, isethi yeeparitha zokutywinwa kobushushu ezifanelekileyo kwiimveliso ezithile kunye nemigca yokuvelisa inokufumaneka. Ngeli xesha, ingqwalasela ebanzi kunye nokukhetha okufanelekileyo kufuneka kwenziwe ngokusekelwe kwi-curve yokutywinwa kobushushu obufunyenweyo ekuvavanyeni.
I-4) Ukuqhekeka kunye nokuchithwa kweengxowa zokupakisha eziguquguqukayo zeplastiki kukubonakalisa ngokubanzi izinto, iinkqubo zokuvelisa, iiparitha zokuvelisa, kunye nemisebenzi yokuvelisa. Kuphela emva kokuhlalutya okucacileyo kuya kuchongwa izizathu zokwenyani zokukrazuka kunye ne-delamination. Imigangatho kufuneka isekwe xa kuthengwa izinto ezikrwada kunye nezincedisayo kunye nokuphuhlisa iinkqubo zemveliso. Ngokugcina iirekhodi ezilungileyo zangaphambili kunye nokuphucula ngokuqhubekayo ngexesha lemveliso, izinga lomonakalo weengxowa zokupakisha ezizenzekelayo eziguquguqukayo zeplastiki zinokulawulwa ukuya kwinqanaba elifanelekileyo ngaphakathi koluhlu oluthile.
Ixesha lokuposa: Dec-02-2024