Iimpawu kunye nezakhono zokuprinta ze-inki esekelwe emanzini kwiphepha le-corrugatedibhokisi yetshokolethi
I-inki esekelwe emanzini yimveliso ye-inki ehambelana nokusingqongileyo efumene ingqalelo ngokubanzi kwiminyaka yakutshanjeibhokisi ye-pastry. Nguwuphi umahluko phakathi kwe-inki esekwe emanzini kunye ne-inki yokushicilela ngokubanzi, yaye ngawaphi amanqaku afuna ingqalelo ekusetyenzisweni? Apha, uMeibang uyakukucacisela ngokweenkcukacha.
I-inki esekwe emanzini ibisetyenziswa ekushicileleni amazinki ixesha elide kumazwe aphesheya nakwiminyaka engaphezu kwama-20 ekhaya. Ushicilelo lwephepha elibotshiweyo luphuhliswe ukusuka kushicilelo lwelothe (ushicilelo loncedo), ushicilelo lwe-offset (i-offset printing) kunye nepleyiti yerabha yamanzi eprintwayo ehlambekayo ukuya kushicilelo lwanamhlanje oluguquguqukayo lwe-inki olusekelwe kumanzi. Uncedo oluthambileyo lwe-inki esekwe emanzini luye lwaphuhliswa ukusuka kwi-rosin-maleic acid modified resin series (ibakala eliphantsi) ukuya kuthotho lweresin ye-acrylic (ibakala eliphezulu). Ipleyiti yokushicilela nayo isuka kwipleyiti yerabha ukuya kwipleyiti yeresin. Umatshini wokushicilela nawo uye waphuhliswa ngokuthe ngcembe ukusuka koomatshini abanombala omnye okanye abanemibala emibini abaneerola ezinkulu ukuya koomatshini bokushicilela beFLEXO abanemibala emithathu okanye emine.
Ukubunjwa kunye neempawu zeenki ezisekelwe emanzini zifana nezo zeinki zokushicilela ngokubanzi. Iinki ezisekelwe emanzini zidla ngokuqulunqwa ngemibala, izibophelelo, izinto ezincedisayo kunye nezinye izinto. Imibala yimibala ye-inki esekwe emanzini, enika i-inki umbala othile. Ukuze wenze umboniso ugqame ekushicileleni i-flexographic, ii-colorants ngokuqhelekileyo zisebenzisa i-pigments ngokuzinza kakuhle kweekhemikhali kunye namandla aphezulu ombala; Isibophelelo siquka amanzi, intlaka, iikhompawundi zeamine kunye nezinye izinyibilikisi eziphilayo. I-resin iyona nto ibaluleke kakhulu kwiinki ezisekelwe emanzini. I-resin ye-acrylic ene-soluble yamanzi idla ngokusetyenziswa. Icandelo le-binder lichaphazela ngokuthe ngqo umsebenzi wokubambelela, isantya sokumisa, ukusebenza okuchasene nokunamathela, njl njl. Iikhompawundi ze-amine ikakhulu zigcina ixabiso le-alkaline ye-PH ye-inki esekelwe emanzini, ukwenzela ukuba i-resin ye-acrylic inokubonelela ngempembelelo engcono yokushicilela. Amanzi okanye ezinye izinyibilikisi eziphilayo ikakhulu zinyibilike resins, Lungisa viscosity kunye nesantya ukomisa inki; Iiarhente ezincedisayo ziquka: i-defoamer, i-blocker, i-stabilizer, i-diluent, njl.
Njengoko i-inki esekelwe emanzini iyisepha yokwakheka, kulula ukuvelisa amaqamza asetyenziswayo, ngoko ke ioli ye-silicone kufuneka yongezwe njenge-defoamer yokuthintela kunye nokuphelisa amaqamza, kunye nokuphucula ukusebenza kokuhanjiswa kweyinki. I-blockers isetyenziselwa ukuvimbela isantya sokumisa i-inki esekelwe kumanzi, ukukhusela inkinki ekumiseni kwi-anilox roll kunye nokunciphisa i-paste. I-stabilizer inokulungelelanisa ixabiso le-PH ye-inki, kwaye ingasetyenziselwa njenge-diluent ukunciphisa i-viscosity ye-inki. I-diluent isetyenziselwa ukunciphisa umbala we-inki esekwe emanzini, kwaye ingasetyenziswa njengesikhanyisi ukuphucula ukuqaqamba kwe-inki esekwe emanzini. Ukongezelela, enye i-wax kufuneka yongezwe kwi-inki esekelwe emanzini ukunyusa ukuxhathisa kwayo.
I-inki esekwe emanzini inokuxutywa namanzi phambi kokuba yomiswe. Xa i-inki yomile, ayisayi kunyibilika emanzini nakwi-inki. Ngoko ke, i-inki esekwe emanzini kufuneka ishukunyiswe ngokupheleleyo phambi kokusetyenziswa ukugcina iyunifomu yokwakheka kwe-inki. Xa ufaka i-inki, ukuba i-inki eseleyo kwitanki ye-inki iqulethe ukungcola, kufuneka ihluzwe kuqala, kwaye isetyenziswe nge-inki entsha. Xa uprinta, musa ukuvumela i-inki yome kwi-anilox roll ukunqanda ukuvala umngxuma we-inki. Ukuthintela ukuhanjiswa kobungakanani be-inki kubangela ukungazinzi koshicilelo. Ngethuba lenkqubo yokushicilela, i-flexplate kufuneka ihlale imanzi nge-inki ukuze igweme ukuthintela iphethini yokubhaliweyo kwi-plate yokushicilela emva kokuba inki yomile. Ukongezelela, kufunyenwe ukuba xa i-viscosity ye-inki esekelwe emanzini iphezulu kancinane, akufanelekanga ukongeza amanzi ngokungaqhelekanga ukuphepha ukuchaphazela ukuzinza kwe-inki. Unokongeza inani elifanelekileyo le-stabilizer ukuyilungisa.
Ixesha lokuposa: Mar-15-2023
