Mutoh and CGS Oris team up for proofing

Mutoh Europe and CGS Oris have worked together to create a proofing solution that allows proofs to be printed to the same substrates that will be used in production. 

Mutoh and CGS Oris have teamed up to create a direct-to-substrate proofing system using resin inks.

Essentially this is a combination of CGS Oris’ existing packaging proofing and mock up system Flex Pack together with Mutoh’s ValueJet 628 MP, an existing 630mm wide eco solvent inkjet printer that Mutoh has adapted in order to run a new generation CGS Oris multi-resin XG ink.

This new XG ink, which includes CMYK plus light cyan and light magenta as well as white, is the key to this solution. Resin inks are non-toxic, pigmented inks in a volatile solution with good adhesion on coated and uncoated substrates. The XG resin inks can cover an ISO-coated or GRACoL color space.  This ink is able to print to a wide range of packaging substrates without using any kind of primer, including shrink film, uncoated label stock and corrugated board. The ink is capable of a degree of stretch and shrink which will allow users to check the correct distortion of a shrink sleeve prototype. This is quite a unique solution as most other approaches involve using aqueous or eco-solvent printers that struggle with some packaging materials.

Heiner Mueller, sales director of packaging at CGS Oris, explains: “We see a huge potential for our common solution for specific niche applications which are complementary to our existing business of proofing via transfer film in combination with eco solvent inks. The first niche we have addressed is companies who specialize in shrink sleeve production. Our new multi-resin XG series inks will not only allow printing onto uncoated substrates, they will also allow packaging professionals to check the correct distortion of a shrink sleeve prototype thanks to the fact that the new XG inks have unique stretch and shrink capabilities.”

He added: “A second important niche we see is for proofs on uncoated label stock and corrugated board. Unlike UV inks, CGS Oris XG inks will retain the look and feel as well as all other physical properties of the target substrates.  This means the proofs will have the physical feel of the final product. It is not possible to cover these applications with regular transfer film and water-based or eco solvent inks.”

Mutoh had to make a number of changes to the ValueJet 628  in order to accommodate this new ink, as Mitsuo Takasu, managing director of Mutoh Europe, explains: To cover the specific requirements of packaging designers and to adapt the printer chassis to the unique characteristics of the CGS Oris XG inks, we have developed an innovative mild temperature, low pressure hot air knife system which, in combination with the integrated contact heaters, allows the CGS Oris XG inks to dry on uncoated substrates without exposing them to excessive heat. The media transport system has been optimized to allow loading of a wide variety of flexible substrates including very thin PE shrink film and the pressure rollers transporting the substrate can be individually disabled. To tackle the white CGS Oris XG inks, we have integrated an internal ink circulation system. The ValueJet 628MP printer is also equipped with a 10 kg roll take-up system and has a sheet-off mechanism to sheet off individual prints.”

Takasu says that this system is already in use in Japan and has had good feedback from early users in Europe. Mueller adds: “The results have contract proof quality and thanks to the motorized take-up unit, the system is suitable for unattended operation and therefore even for ultra-short runs.“

Mueller concludes by saying: “Looking ahead, we are also exploring additional opportunities for the VJ-628MP/Flex Pack/CGS Oris XG inks solution, such as non-woven fabrics, garment tags and PE plastic bags.”

You can find more information on the printers from mutoh.eu and on the Flex Pack proofing system from cgs-oris.com.


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