|Flexipoly||Multipupose Bag inks||Pp,Ldpe,HM Hdpe etc.,||MSDS | TDS|
|Flexisack bond||Woven sacks inks||Pp, Hdpe, etc..||MSDS | TDS|
|Flexipulp||Inks for Packaging Carton||Coated papers and boards||MSDS | TDS|
|FlexiGlassine||Gift Wrapper inks||Glazed News Print and Glassine Paper||MSDS | TDS|
|FlexiOpaque||Surface Printing Ink||Paper, board, PVC and Polystrene surface||MSDS | TDS|
|Foil shine||Transparent Inks||Craft paper and board||MSDS | TDS|
|FlexiAnchorPlast||Inks for Freezer packaging||Pp,Ldpe,HM Hdpe, etc..||MSDS | TDS|
|FlexiAlkylfix||2pack inks for Alkali resist Packs||Pp,Ldpe,HM Hdpe etc||MSDS | TDS|
|FlexAquaPulp||Opaque Inks||Craft Paper and Board||MSDS | TDS|
|FlexAquaSheen||Gloss finish Inks||Coated Paper and Board||MSDS | TDS|
|FlexAquaGlo||Flourescent Inks||Paper and Board||MSDS | TDS|
|MetaAquaFlex||Mettalic Finish inks||Coated and uncoated Paper and board||MSDS | TDS|
|FlexAquaPlast||FlexAquaPlast Process Inks||Paper and Plastic Surfaces||MSDS | TDS|
Flexography (often abbreviated to flexo) is a form of printing process which utilizes a flexible relief plate. It is basically an updated version of letterpress that can be used for printing on almost any type of substrate including plastic, metallic films, cellophane, and paper. It is widely used for printing on the non-porous substrates required for various types of food packaging (it is also well suited for printing large areas of solid colour).A flexographic print is made by creating a positive mirrored master of the required image as a 3D relief in a rubber or polymer material. Flexographic plates can be created with analog and digital plate making processes. The image areas are raised above the non image areas on the rubber or polymer plate. The ink is transferred from the ink roll which is partially immerged in the ink tank.Then it transfers to the anilox roll (or meter roll) whose texture holds a specific amount of ink since it’s covered with thousands of small wells or cups that enable it to meter ink to the printing plate in a uniform thickness evenly and quickly (the number of cells per linear inch can vary according to the type of print job and the quality required).To avoid getting a final product with a smudgy or lumpy look, it must be ensured that the amount of ink on the printing plate is not excessive. This is achieved by using a scraper, called a doctor blade. The doctor blade removes excess ink from the anilox roller before inking the printing plate. The substrate is finally sandwiched between the plate and the impression cylinder to transfer the image.Flexo has an advantage over lithography in that it can use a wider range of inks, water based rather than oil based inks, and is good at printing on a variety of different materials like plastic, foil, acetate film, brown paper, and other materials used in packaging.Typical products printed using flexography include brown corrugated boxes, flexible packaging including retail and shopping bags, food and hygiene bags and sacks, milk and beverage cartons, flexible plastics, self adhesive labels, disposable cups and containers, envelopes and wallpaper.A number of newspapers now eschew the more common offset lithography process in favor of flexo. Flexographic inks, like those used in gravure and unlike those used in lithography, generally have a low viscosity. This enables faster drying and, as a result, faster production, which results in lower costs.
What is Flexographic Printing?
Applications: Flexography is the major process used to print packaging materials. Flexography is used to print corrugated containers, folding cartons, multiwall sacks, paper sacks, plastic bags, milk and beverage cartons, disposable cups and containers, labels, adhesive tapes, envelopes, newspapers, and wrappers (candy and food)
In the typical flexo printing sequence, the substrate is fed into the press from a roll. The image is printed as substrate is pulled through a series of stations, or print units. Each print unit is printing a single color. As with Gravure and Lithographic printing, the various tones and shading are achieved by overlaying the 4 basic shades of ink. These are magenta, cyan, yellow and black. Magenta being the red tones and cyan being the blue. The major unit operations in a flexographic printing operation are:
Below is a process flow diagram for flexographic printing:
Image preparation begins with camera-ready (mechanical) art/copy or electronically produced art supplied by the customer. Images are captured for printing by camera, scanner or computer. Components of the image are manually assembled and positioned in a printing flat when a camera is used. This process is called stripping. When art/copy is scanned or digitally captured the image is assembled by the computer with special software. A simple proof (brown print) is prepared to check for position and accuracy. When color is involved, a color proof is submitted to the customer for approval.Flexographic Plate MakingFlexographic and letterpress plates are made using the same basic technologies utilizing a relief type plate. Both technologies employ plates with raised images (relief) and only the raised images come in contact with the substrate during printing. Flexographic plates are made of a flexible material, such as plastic, rubber or UV sensitive polymer (photopolymer), so that it can be attached to a roller or cylinder for ink application. There are three primary methods of making flexographic plates; photomechanical, photochemical and laser engraved plates.
Flexographic Printing Presses
The five types of printing presses used for flexographic printing are the stack type, central impression cylinder (CIC), in-line, newspaper unit, and dedicated 4-, 5-, or 6-color unit commercial publication flexographic presses. All five types employ a plate cylinder, a metering cylinder known as the anilox roll that applies ink to the plate, and an ink pan. Some presses use a third roller as a fountain roller and, in some cases, a doctor blade for improved ink distribution.
Flexographic inks are very similar to packaging gravure printing inks in that they are fast drying and have a low viscosity. The inks are formulated to lie on the surface of nonabsorbent substrates and solidify when solvents are removed. Solvents are removed with heat, unless U.V. curable inks are used.
After printing, the substrate may run through a number of operations to be “finished” and ready for shipment to the customer. Finishing may include operations such as coating, cutting, folding
Rupa colour Inks Leading Manufacturers, exporters and suppliers of Pad printing Inks, Printing inks, Silkscreen ink, Flexo Ink, Offset Ink, gravure Ink, Screen Ink, Water based Ink, UV Ink, Tin Printing Inks, Roller Coating, Over Printing Varnishes, Textile Screen Printing Inks, Marking Inks, Plastisol Inks, Numbering Ink, Printing oil, Stenciling Inks