I-Abstract: Ukuba ufuna ukwenza inkqubo ye-solvent-free composite usebenzisa ngokuthe ngcembe, kubalulekile ukukhetha i-adhesive composite ngokuchanekileyo.Eli nqaku lizisa indlela yokukhetha i-adhesive ye-solvent-free composite adhesive for composite substrates kunye nezakhiwo.
Ngokukhula kunye nokuthandwa kwetekhnoloji ye-solvent-free composite, ii-substrates ezininzi zefilimu ezibhityileyo zingasetyenziselwa i-solvent-free composite.Ukusebenzisa itekhnoloji edityanisiweyo engenazinyibilikisi ngokuzinzileyo, kubalulekile ukukhetha incamathiso echanekileyo.Ngezantsi, ngokusekelwe kumava ombhali, siya kwazisa indlela yokukhetha i-adhesive efanelekileyo ye-solvent-free.
Okwangoku, i-lamination eyomileyo kunye ne-solvent-free lamination zihlangene.Ke ngoko, ukuzinzisa ukusetyenziswa kwetekhnoloji ye-solvent-free lamination, inqaku lokuqala kukuqonda ngokupheleleyo ubume bemveliso yefektri yokupakisha, uhlele ubume bemveliso ngokweenkcukacha, uhlele izakhiwo zemveliso ezingasetyenziselwa ukunyibilikisa okunganyibilikiyo, kwaye emva koko ukhethe i-adhesive efanelekileyo engena-solvent.Ke, unokukhetha njani ngokufanelekileyo i-adhesives engena-solvent?Tshatisa nganye nganye kule miba ilandelayo.
- amandla okuncamathelisa
Ngenxa yobunzima kunye nokwahluka kwezinto zokupakisha, unyango olungaphezulu lwama-substrates lukwahluka kakhulu.Izinto zokupakisha eziqhelekileyo eziguquguqukayo nazo zineempawu ezahlukeneyo, ezifana ne-PE, BOPP, PET, PA, CPP, VMPET, VMCPP, njl. Kukho nezinye izinto ezingasetyenziswanga ngokuqhelekileyo kwiipakethe eziguquguqukayo, ezifana ne-PS, PVC, EVA, PT. , I-PC, iphepha, njl. Ngoko ke, i-adhesive-free adhesive ekhethwe ngamashishini kufuneka ibe nokubambelela kakuhle kwizinto ezininzi zokupakisha eziguquguqukayo.
- Ukumelana nobushushu
Ukumelana nobushushu kubandakanya imiba emibini.Enye kukuxhathisa ubushushu obuphezulu.Okwangoku, ukutya okuninzi kufuneka kufakwe inzalo yobushushu obuphezulu, okunye kwenziwa inzala kwi-80-100.° C, ngelixa abanye bavalwa inzala kwi-100-135° C. Ixesha lokuvala inzala liyahluka, enye ifuna imizuzu eyi-10-20 kwaye enye ifuna imizuzu engama-40.Ezinye zisacolwa nge-ethylene oxide.Izixhobo ezahlukeneyo zineendlela ezahlukeneyo zokuvala inzala.Kodwa i-adhesive ekhethiweyo engena-solvent kufuneka ihlangabezane nezi mfuno zokushisa eziphezulu.Ibhegi ayikwazi ukucima okanye ukonakala emva kobushushu obuphezulu.Ukongeza, izinto ezinyangwa nge-adhesive-free adhesive kufuneka zikwazi ukumelana namaqondo obushushu aphezulu angama-200.° C okanye nokuba ngama-350° C ngoko nangoko.Ukuba oku akunako ukufezekiswa, ukutywinwa kobushushu bebhegi kuqhelekile kwi-delamination.
Okwesibini kukumelana nobushushu obuphantsi, okwabizwa ngokuba kukuchasana nokukhenkceza.Izinto ezininzi zokupakisha ezithambileyo ziqulethe ukutya okunomkhenkce, okufuna izinto zokuncamathelisa ezingena-solvent ukuze zikwazi ukumelana nobushushu obuphantsi.Kwiqondo lokushisa eliphantsi, izinto eziqiniswe zizincamathelisi ngokwazo ziyakwazi ukuqina, ukuqina, i-delamination, kunye nokwaphuka.Ukuba ezi ziganeko zenzeka, zibonisa ukuba i-adhesives ekhethiweyo ayikwazi ukumelana nokushisa okuphantsi.
Ngoko ke, xa ukhetha i-adhesives-free adhesives, ukuqonda okucacileyo kunye novavanyo lokumelana nokushisa kuyimfuneko.
3.Impilo kunye noKhuseleko
I-adhesives-free adhesives esetyenziselwa ukutya kunye neyeza lokupakisha kufuneka ibe nococeko olulungileyo kunye nokusebenza ngokukhuselekileyo.Kukho imimiselo engqongqo kumazwe ahlukeneyo kwihlabathi jikelele.I-US FDA ihlela izinto zokuncamathelisa ezisetyenziswa kwizinto zokupakisha eziyintlanganisela yokutya kunye namachiza njengezongezo, inciphisa imathiriyeli ekrwada esetyenziselwa ukwenza izinto zokuncamathelisa kunye nokwalela ukusetyenziswa kwezinto ezingafakwanga kuluhlu oluvunyiweyo lwemathiriyeli ekrwada, kunye nezixhobo ezidibeneyo ezenziwe ngale nto. Izinto zokuncamathelisa zihlelwa kwaye zilinganiselwe kuluhlu lobushushu besicelo, kubandakanywa ukusetyenziswa kobushushu begumbi, ukusetyenziswa kokubulala iintsholongwane, ukubilisa iintsholongwane, i-122 ° C yokusetyenziswa kwe-sterilization eqhumayo, okanye i-135 ° C nangaphezulu kobushushu obuphezulu bokusebenzisa inzala.Ngexesha elifanayo, izinto zokuhlola, iindlela zokuvavanya, kunye nezibonakaliso zobugcisa bezinto zokupakisha nazo zenziwe.Kukwakho izibonelelo ezifanelekileyo kunye nezithintelo kumgangatho waseTshayina we-GB9685. Ngoko ke, izincamathelisi ezingenanyinyibilikisi ezisetyenziselwa urhwebo lwangaphandle kufuneka zihambelane nemigaqo yasekhaya.
4.Ukuhlangabezana neemfuno zezicelo ezizodwa
Ukusetyenziswa ngokubanzi kwee-solvent-free composites kwintsimi yokupakisha okuguquguqukayo kuye kwakhuthaza ukwandiswa kwazo kwiindawo ezinxulumene nazo.Okwangoku, kukho iindawo ezikhethekileyo apho zisetyenziswe khona:
4.1 I-solvent free composite sheet packaging
Amaphepha e-PET ayenziwe ikakhulu ngezinto ze-PET ezinobunzima be-0.4mm okanye ngaphezulu.Ngenxa yobunzima kunye nokuqina kwesi sixhobo, kuyimfuneko ukukhetha i-adhesive-free adhesive kunye ne-adhesion ephezulu yokuqala kunye ne-viscosity ukwenza le nto. ezinye zazo zifuna isitampu, ngoko ke iimfuno zamandla exolo ziphezulu kakhulu.I-WD8966 eveliswe yi-Kangda New Materials ine-adhesion ephezulu yokuqala kunye nokumelana nokunyathela, kwaye isetyenziswe ngempumelelo kwi-PET sheet composite.
4.2 Ukupakishwa kwelaphu elingalukwanga lokunyibilikisa simahla
Amalaphu angalukwanga asetyenziswa kakhulu kwaye aneentlobo ngeentlobo.Ukusetyenziswa kwamalaphu angalukwanga kwiindawo ezingenazo i-solvent-free ikakhulu kuxhomekeke kubukhulu belaphu elingalukwanga kunye nobuninzi bemicu.Xa sithetha ngokuthelekisa, i-denser yelaphu elingalukwanga, kokukhona i-composite engena-solvent.Okwangoku, icandelo elinye le-polyurethane eshushu encamathelayo enyibilikayo isetyenziswa kakhulu kumalaphu angalukwanga angalukwanga.
Ixesha lokuposa: Dec-12-2023