What is Gravure?
Rotogravure, or gravure for short, is a type of intaglio printing process, which involves engraving the image onto an image carrier. In gravure printing, the image is engraved onto a cylinder because, like offset printing and flexography, it uses a rotary printing press. Once a staple of newspaper photo features, the rotogravure process is still used for commercial printing of magazines, postcards, and corrugated (cardboard) and other product packaging.
Pros and Cons of Gravure Printing
Although the rotogravure printing process is not the most popular printing process used in flexible-packaging manufacturing, it does have the ability to print on thin film such as polyester, OPP, nylon, and PE, which come in a wide range of thicknesses, commonly 10 to 30 micrometers.
Other appreciated features include – printing cylinders that can last through large-volume runs without the image degrading, good quality image reproduction, and low per-unit costs running high volume production.
Shortcomings of the gravure printing process include – high start-up costs: hundreds of thousands of copies needed to make it profitable, rasterized lines and texts, and long lead time for cylinder preparation, which is offsite as the techniques used are so specialized.
How can Maha help?
Maha Chemicals has a variety of raw materials being offered for gravure inks. These are the following:
- EVA Resin is the main resin for gravure reverse printing on flexible packaging film such as OPP, BOPP, etc.
- Chlorinated Polypropylene enhances the adhesion to the substrates such as BOPP, OPP, etc. It is also the main resin for gravure reverse printing.
- Vinyl chloride and Vinyl isobutyl ether resin is a resin for gravure reverse printing on flexible packaging substrates such as BOPP, OPP, etc. It improves the compatibility of EVA and chlorinated polypropylene resins.
- Vinyl chloride and Vinyl acetate copolymer resin is a modifier resin to improve flexibility, adhesion, and heat-sealing properties of the ink. It is a resin for gravure reverse printing inks.
- Polyamide co-solvent type resin (Neu Amide PA-650 (low visco), -800 (medium visco), -900 (high visco), our house brand) is a resin for gravure surface printing. It can be used on paper, PE, and PP substrates.
- Polyamide alcohol-soluble type resin is a resin for alcohol-based printing ink.
Above-mentioned resins are just some of the raw materials offered by Maha Chemicals to ink manufacturers. Feel free to contact us at email@example.com for more information!
Written by Rusty from Maha Chem Philippines