Ikhadibhodi emhlophe yephepha lecuba ifuna ukuqina okuphezulu, ukumelana nokuqhekeka, ukuguda kunye nobumhlophe. Umphezulu wephepha kufuneka ube tyaba, ungavumelekanga ukuba ube nemivimbo, amabala, amaqhuma, ukugoba kunye nokuguquguquka kwesizukulwana. Njengephakheji yecuba enekhadibhodi emhlophe. Ukusetyenziswa okuphambili komatshini wokuprinta we-gravure wewebhu okhawulezayo ukuprinta, ngoko ke iimfuno ze-index yoxinzelelo lwekhadibhodi emhlophe ziphezulu. Amandla okuqina, okwaziwa ngokuba ngamandla okuqina okanye amandla okuqina, yenzelwe ukuba ibe luxinzelelo oluphezulu olunokumelana nephepha ngexesha lokuqhekeka, oluchazwe kwi-kN/m. Umatshini wokuprinta we-gravure okhawulezayo ukutsala imiqulu yephepha, ukuprinta okukhawulezayo ukumelana noxinzelelo olukhulu, ukuba imeko yokuqhekeka kwephepha rhoqo, kuya kubangela ukumiswa rhoqo, ukunciphisa ukusebenza kakuhle, kodwa kwanokunyusa ukulahleka kwephepha.
Kukho iintlobo ezimbini zeikhadibhodi emhlophe yeepakethi zecuba, enye yi-FBB (ikhadibhodi emhlophe etyheli) kwaye enye yi-SBS (ikhadibhodi emhlophe etyheli), zombini i-FBB kunye ne-SBS zinokusetyenziswa kwiipakethi zecuba ziikhadibhodi ezimhlophe ezigqunywe ngecala elinye.
I-FBB ineeleya ezintathu ze-pulp, iileya eziphezulu nezisezantsi zisebenzisa i-sulfate wood pulp, kwaye ileya engundoqo isebenzisa i-pulp yomthi ocoliweyo ngokwekhemikhali. Icala elingaphambili (icala lokuprinta) ligqunywe ngelaphu lokugquma elisetyenziswa kusetyenziswa ii-squeegees ezimbini okanye ezintathu, ngelixa icala elingasemva lingenalo ileya lokugquma. Ekubeni ileya ephakathi isebenzisa i-pulp yomthi ocoliweyo ngokwekhemikhali nangoomatshini, enemveliso ephezulu kwimithi (85% ukuya kwi-90%), iindleko zemveliso ziphantsi kakhulu, kwaye ke ngoko ixabiso lokuthengisa le nto ifunyenweyo liphantsi.Ikhadibhodi yeFBBiphantsi kakhulu. Le pulp ineefayibha ezinde kwaye ineefayibha ezincinci kunye neefayibha, nto leyo ebangela ukuba iphepha eligqityiweyo libe nobukhulu obuhle, ukuze i-FBB yegrammage efanayo ibe nkulu kakhulu kune-SBS, ekwahlala iqulathe iileya ezintathu zepulp, kunye nepulp yomthi etyheli njengesulfur esetyenziselwa iileya zobuso, umbindi, kunye nomva. Umphambili ((icala lokuprinta)) ugqunywe, kwaye njenge-FBB igqunywe ngee-squeegees ezimbini okanye ezintathu, ngelixa icala elingasemva lingenamaleko wokugquma. Ekubeni umaleko ombindi usebenzisa nepulp yomthi etyheli ye-sulfate, inobumhlophe obuphezulu kwaye ngoko ke ibizwa ngokuba yikhadi elimhlophe elimhlophe. Kwangaxeshanye, iifayibha zepulp zilungile, iphepha liqinile, kwaye i-SBS incinci kakhulu kunobukhulu be-FBB yegrammage efanayo.
Ikhadi lesigarethi, okanyeikhadibhodi emhlophekwicuba, yikhadibhodi emhlophe egqunywe ngomgangatho ophezulu esetyenziselwa ngokukodwa ukwenza izixhobo zokupakisha icuba. Eli phepha likhethekileyo liyacutshungulwa kwaye lenziwe kakuhle ngenkqubo enzima, kwaye umsebenzi walo ophambili kukubonelela icuba ngepakeji yangaphandle ekhangayo, ecocekileyo nekhuselayo. Njengenxalenye ebalulekileyo yeemveliso zecuba, ikhadi lecuba alihlangabezani nje neemfuno ezisisiseko zokupakisha imveliso, kodwa likwabonakalisa ukubonakaliswa okugqwesileyo kophawu ngenxa yonyango lwalo olukhethekileyo kunye nokufaneleka kokuprinta.
Iimbonakalo
1. Izinto kunye nobungakanani.
Ikhadi lecuba linomlinganiselo ophezulu, odla ngokuba ngaphezulu kwe-200g/m2, nto leyo eqinisekisa ukutyeba okwaneleyo kunye namandla okuxhasa nokukhusela iicuba ezingaphakathi.
Ulwakhiwo lwayo lwefayibha lufana kwaye luxineneyo, lwenziwe ngepulp yomthi ekumgangatho ophezulu, kwaye longeza inani elifanelekileyo lezinto zokuzalisa kunye nezincamathelisi ukuqinisekisa ukuba iphepha liqinile kwaye lisebenza kakuhle ekucutshungulweni.
2. Ukwaleka kunye nokufaka iikhalenda.
Inkqubo yokulungisa iikhalenda yenza umphezulu ube tyaba kwaye uthambe, yonyusa ukuqina nokukhazimla kwephepha, kwaye yenza ukubonakala kweepakethi zecuba kube kumgangatho ophezulu.
3. Iimpawu ze-physicochemical.
Ikhadi lesigarethi linokumelana okuhle kakhulu nokugoba nokukrazula, okuqinisekisa ukuba akukho kuphuka kwinkqubo yokupakisha ezenzekelayo ekhawulezayo. Lineempawu ezilungileyo zokufunxa nokomisa i-inki, nto leyo elungele ukuprintwa ngokukhawuleza kwaye ithintele ukungena kwe-inki.
Iyahlangabezana neemfuno zemigaqo yokhuseleko lokutya, ayinavumba kwaye ayinazo izinto eziyingozi emzimbeni womntu, nto leyo ekhusela ukhuseleko lwabathengi.
4. Ukhuseleko lokusingqongileyo kunye nokulwa nobuxoki.
Njengoko ulwazi ngokhuseleko lokusingqongileyo lukhula, ukuveliswa kwamakhadi ecuba anamhlanje kudla ngokusebenzisa izixhobo ezihlaziyekayo kwaye kunciphisa ungcoliseko lokusingqongileyo.
Ezinye iimveliso zekhadi lecuba ezikumgangatho ophezulu zikwadibanisa ubuchwepheshe bokulwa nobuxoki, obufana neengubo ezikhethekileyo, imicu enemibala, iipateni zelaser, njl.njl., ukuze kujongwane nengxaki enkulu yokwenziwa kobuxoki.
Izicelo
Ukupakishwa kwebhokisi eqinileyo: Isetyenziswa ekwenzeni iintlobo ngeentlobo zeebhokisi zecuba eziqinileyo, umaleko ongaphakathi ungafakelwa i-aluminium foil kunye nezinye izinto ukwandisa iimpawu zokuthintela. Iipakethi ezithambileyo: Nangona zinqabile, amakhadi ecuba asetyenziswa njengee-liners okanye i-closures kwezinye iipakethi zecuba ezithambileyo.
Uphawu: Ngokuprinta okusemgangathweni ophezulu kunye noyilo olukhethekileyo, amakhadi ecuba anceda iinkampani zecuba ukuba zibonakalise uphawu lwazo kwaye ziphucule ukhuphiswano lwemarike.
Iimfuneko zomthetho nezolawulo: Njengoko imithetho engqongqo ngakumbi malunga nokupakishwa kwecuba kumazwe ahlukeneyo isiya isanda, amakhadi ecuba nawo kufuneka athobele imfuneko yokuba izilumkiso zempilo zibonakale ngokucacileyo kwaye kube nzima ukuzitshintsha.
Ixesha leposi: Julayi-22-2024