isogenix


 


Printing/Plating Industry

Dry ice blasting replaces the use of dangerous solvents, scrapers, chisels and emery clothes without having to dismantle the press, thus eliminating many direct and indirect costs such as downtime hours, poor print quality, increase scrap, wear of machined parts, and disposal of hazardous waste and solvents.

The patented dry ice pellets have the mass and density required to remove all types of water- and solvent-based inks and varnishes without damaging equipment and surfaces, resulting in optimal equipment performance, increased productivity and higher profit margins.

In the Flexograph Printing Industry, ink and varnish polymers are designed to adhere to most surfaces, resist scratches and, in some  instances, be solvent resistant. These characteristics, which make their use attractive, also make the removal of dried ink very difficult. Ink build-up on the gears and deck guides causes poor alignment and result in low print quality. Generally, each "press run" is used to determine the register of the colours and results in thousands of feet of wasted materials material. This inherently wasteful  process can now be eliminated due to the on-line precision cleaning ability of Isogenix Dry Ice Blast  Cleaning.

Isogenix Dry Ice Blast Cleaning is ideal for the cleaning of Continuous Web and Sheet Fed Printing Presses. It can be used on machinery and support equipment and on dryers and drums. The following contaminants can be reduced or eliminated on inking areas: Gripper bars (including diamond coated),
Side walls,Feeder/delivery units, Anilox/Gravure rollers, Drums, Ink trays and walks without risk of damage.

 
Print Dryer Before   Print Dryer After

In many plants, the cleaning of the side frames and print deck mechanism is usually avoided until absolutely necessary. Typically, several hours are spent on each colour station to scrape and wipe the critical surfaces. With today's modern presses having six to eight colour decks, cleaning downtime can easily add up to several thousand Rand of lost production per cleaning cycle. Using the  Isogenix Dry Ice Blast Cleaning process, the cylinders can be removed to provide easy access to all surfaces,allowing cleaning of both sides. In addition, dried out drip pans  and fountains can easily be cleaned as well.

 
Sideframes Before   Sideframes after

Printing with fluid inks at high speeds also creates an "ink mist" of fine droplets that comes from the splitting and transfer of the inks from the printing plate to the substrate being printed. These droplets settle on the areas "between colour dryer boxes" and eventually clog the vent slots or nozzles, resulting in a reduced and uneven airflow, which in turn inhibits proper drying. To compensate for this reduced airflow, the press
speed is reduced which immediately results in lost production and lower quality.

Not only does Isogenix Dry Ice Blast Cleaning speed up the cleaning process, but it also provides a far superior clean.

Traditional cleaning methods, used to address this problem, involve strong solvents and other media that must  be collected, treated and disposed. Most solvents that are strong enough to remove the inks are hazardous or even flammable and their disposal is highly regulated and costly. In addition, the scraping and chipping action of hand tools wears and destroys the machined parts causing high repair costs and lost production time. Repeated cleaning this way eventually destroys the accuracy of cylinder adjustments, making it increasingly difficult to produce a quality product.

 
Inkline Coupling Before Inkline Coupling After

At Isogenix, we understand the critical need for clean gears, bearings, journals and screw adjustments for controlling the variations in printing registration. With highly accurate  impressions, residue build-up from inks and varnishes can constantly inhibit the smooth operation of the printing cylinders, which in turn affects your productivity. Dry Ice replaces the use of dangerous solvents, scrapers, chisels and emery cloth without having to  dismantle the press thus eliminating extended periods of down-time and loss of production.

applications