Flexo, monga momwe dzinalo likusonyezera, ndi mbale yosindikizira ya flexographic yopangidwa ndi utomoni ndi zinthu zina. Ndi ukadaulo wosindikizira wa letterpress. Mtengo wopanga mbale ndi wotsika kwambiri kuposa wa mbale zosindikizira zachitsulo monga mbale zamkuwa za intaglio. Njira yosindikizira iyi idaperekedwa pakati pa zaka za m'ma 1900. Komabe, panthawiyo, ukadaulo wothandizira wa inki wopangidwa ndi madzi sunapangidwe kwambiri, ndipo zofunikira pakuteteza chilengedwe sizinali zofunikira kwambiri panthawiyo, kotero kusindikiza zinthu zosayamwa sikunalimbikitsidwe.

Ngakhale kusindikiza kwa flexographic ndi kusindikiza gravure kwenikweni ndi chimodzimodzi mu ndondomekoyi, zonse zimamasula, zimapindika, zimasamutsa inki, zimauma, ndi zina zotero, koma pali kusiyana kwakukulu pakati pa ziwirizi. Kale, inki yochokera ku gravure ndi solvent imakhala ndi zotsatira zodziwika bwino zosindikizira. Kuposa kusindikiza kwa flexographic, tsopano ndi chitukuko chachikulu cha inki yochokera m'madzi, inki ya UV ndi ukadaulo wina woteteza chilengedwe, makhalidwe a kusindikiza kwa flexographic akuyamba kuwonekera, ndipo sali otsika poyerekeza ndi kusindikiza kwa gravure. Kawirikawiri, kusindikiza kwa flexographic kuli ndi makhalidwe awa:

1. Mtengo wotsika

Mtengo wopangira mbale ndi wotsika kwambiri kuposa wa gravure, makamaka posindikiza m'magulu ang'onoang'ono, kusiyana kwake ndi kwakukulu.

2. Gwiritsani ntchito inki yochepa

Kusindikiza kwa flexographic kumagwiritsa ntchito mbale yolumikizira, ndipo inki imasamutsidwa kudzera mu anilox roller, ndipo kugwiritsa ntchito inki kumachepetsedwa ndi oposa 20% poyerekeza ndi mbale ya intaglio.

3. Liwiro losindikiza ndi lachangu ndipo magwiridwe antchito ndi apamwamba

Makina osindikizira a flexographic okhala ndi inki yapamwamba kwambiri yochokera m'madzi amatha kufika mosavuta pa liwiro la mamita 400 pamphindi, pomwe makina osindikizira odziwika bwino nthawi zambiri amatha kufika mamita 150 okha.

4. Wosamalira chilengedwe

Mu kusindikiza kwa flexo, inki zochokera m'madzi, inki za UV ndi inki zina zoteteza chilengedwe nthawi zambiri zimagwiritsidwa ntchito, zomwe zimakhala zoteteza chilengedwe kuposa inki zochokera ku zosungunulira zomwe zimagwiritsidwa ntchito popaka utoto. Palibe mpweya wa VOCS, ndipo ukhoza kukhala wapamwamba kwambiri.

Zinthu zosindikizira gravure

1. Mtengo wokwera wa kupanga mbale

Kale, ma gravure plates ankapangidwa pogwiritsa ntchito njira zowononga mankhwala, koma zotsatira zake sizinali zabwino. Tsopano ma laser plates angagwiritsidwe ntchito, kotero kulondola kwake kuli kwakukulu, ndipo ma printing plates opangidwa ndi mkuwa ndi zitsulo zina ndi olimba kuposa ma resin plates osinthasintha, koma mtengo wopangira ma plates nawonso ndi wokwera. Ndalama zambiri zoyambira.

2. Kulondola bwino kwa kusindikiza komanso kusasinthasintha

Chitsulo chosindikizira chachitsulo ndi choyenera kwambiri kusindikizira zinthu zambiri, ndipo chimakhala ndi kusinthasintha kwabwino. Chimakhudzidwa ndi kutentha ndi kufalikira kwa kutentha ndipo ndi chochepa.

3. Kugwiritsa ntchito inki yambiri komanso mtengo wokwera wopanga

Ponena za kusamutsa inki, kusindikiza gravure kumagwiritsa ntchito inki yambiri, zomwe zimawonjezera ndalama zopangira.