Okwangoku kukho iindidi ezimbini ze-adhesives-free adhesives for flexible packaging composite, enye kunye ne-double components.Icandelo elilodwa lisetyenziselwa kakhulu iphepha kunye ne-nonwovens, enokuthi iqhutywe ngaphandle kokuxuba kwaye ngaphandle kokulungelelanisa umlinganiselo.Amacandelo amabini angasetyenziselwa iindidi zefilimu yokupakisha eguquguqukayo.Ngokusekelwe kumava omntu, eli phepha liza kuchaza indlela yokutshintsha umlinganiselo wamacandelo amabini ngeenjongo ezahlukeneyo kunye nendlela esebenza ngayo.
Okokuqala, umgaqo wokuxuba umlinganiselo we-solvent-free laminated binders uyilwe.
Kukho imiba emithathu kuyilo lobungakanani bomxube wokuncamathelisa okunganyibilikiyo okunganyibilikiyo:
1. Zama ukutshatisa umlinganiselo womxube wamacandelo A & B kubunzima.
I-A / B's compact blending ratio inenzuzo yokuba nobunzima obufanayo.Umzekelo, u-X ngu-100A oxutywe no-90B, u-Y ngu-100A kunye no-50B.I-1% yenguqu ye-B iya kubangela ukuba i-1.1% iguqule ubunzima be-A inxalenye ye-X kunye ne-2% ye-Y. Ngokuqhelekileyo, i-2% yenguqu kwi-mixing ratio iyamkeleka ngexesha lenkqubo yokuvelisa, okukhokelela ekutshintsheni ubunzima be-2. 2 % kunye ne-4%.Ukuba ubunzima babo buhluka kakhulu, oku kunokukhokelela kwizinto ezingaqhelekanga zilandelayo:
(1) Amalungu e-A / B kunzima ukuwaxuba kakuhle ukuze umxube ufume ngokungaqhelekanga.
(2) Ngenxa yokungabikho kwecandelo B, uxinzelelo lwe-mixer luphantsi kakhulu ukuqinisekisa ukuhamba rhoqo, okukhokelela ekuphambukeni kwe-adhesives kunye nokuncipha kwemveliso.
2. Ngokukufutshane kangangoko kunokwenzeka kwi-viscosity yamacandelo e-A & B
Ukunciphisa i-viscosity yecandelo A & B kwiqondo lokushisa elifanelekileyo, ngcono umphumo wokuxuba.Ukuqwalasela isenzo se-binder, i-viscosity yokuqala yamacandelo omabini yahluke kakhulu.Ubushushu kufuneka ilawulwe ngokwahlukeneyo ukulungisa ixabiso viscous.Ukwandisa ubushushu bendawo yokuqala kunye ne-viscosity ephezulu yenza ukuba isondele kwenye indawo, kwaye inenzuzo kuzo zombini isixhobo sokulinganisa umxube kunye nempompo yokuphuma.
3. Ukwandisa ukunyamezela komxube we-A & B
Ngenxa yezinye izinto zangaphandle kwi-laminating, kufuneka kubekho ukutenxa kumlinganiselo wokuxuba.Ukwandisa unyamezelo lwe-A / B yokudibanisa umxube wokudibanisa kunokubuyisela ngokufanelekileyo umphumo ongalunganga wokutenxa.Ngokomzekelo, i-solvent free adhesive free adhesive WD8118A / B yezinto ezintsha zivela kumxube oqhelekileyo we-100: 75 ukuya kumxube we-100: 60 - 85, zombini ezo zivumelekileyo ekusebenziseni kwaye zamkelwe kakuhle ngabathengi abaninzi.
Okwesibini, umgaqo kunye nendlela yokuxuba ukulungiswa komlinganiselo
(1) Ilungelelaniselwe ubushushu bendawo kunye nokufuma
Ngokubanzi, umxholo we-NCO kwicandelo A liphezulu, ngelixa ukuphendula ngomoya kunye nomphunga kwifilimu ngakwesobunxele.Nangona kunjalo, kwiinyanga zasehlotyeni, xa kukho i-steam eninzi emoyeni kwaye ifilimu inomswakama ophezulu, inxalenye A kufuneka inyuswe ukuze idle umphunga ogqithisileyo, oya kwenza kube lula ukuphendula ngokufanelekileyo kwe-adhesive.
(2) Ukulungelelaniswa kwezinto ze-inki kunye nentsalela ye-solvent
Uninzi lokupakisha oluguquguqukayo luprintiweyo ifilimu, inkqubo yoshicilelo yasekhaya ine-solvent ink gravure printing.Kwi-inki esekwe kwi-solvent njenge-additives kuya kubakho i-diluent kunye ne-retarder, zombini i-polyurethane resin system, kwi-adhesive kunye ne-NCO reaction inokutya i-NCO ethile.
Sixhalabele ukucoceka kunye nomxholo wokufuma we-solvent eseleyo.Ziya kuhlala ngaphezulu okanye ngaphantsi kushicilelo, kwaye intsalela esebenzayo ye-hydrogen iya kutya i-NCO ethile.Ukuba iintsalela ezincinci kunye ne-retarder ziphezulu, singongeza icandelo A ukuphucula iziphumo.
(3) Ukulungelelaniswa kokudluliselwa kwe-aluminium
Izinto ezininzi zokupakisha eziguquguqukayo ngoku zi-aluminiized, kwaye umphumo woxinzelelo kwi-coating ungancitshiswa ngokulungelelanisa umlinganiselo wokuxuba wamacandelo e-A / B ukuze uthambe, ngokubanzi ukwandisa icandelo le-B ngokufanelekileyo kunye nokunciphisa ukuhanjiswa kwe-aluminium karhulumente ngokusebenzisa ukunamathiswa kokuphazamiseka. .
Ixesha lokuposa: Apr-22-2021