IPASTOP totally eliminates the use of Isopropyl alcohol.

The first complete replacement of isopropyl alcohol, that enables an alcohol-free print in sheet-fed and web offset. At the same time, IPA STOP works as a damping solution additive and stabilizes the pH factor.
It is suitable for trouble-free printing with process colours, Pantone colours, UV and metallic inks. Simultaneously IPA STOP is corrosion inhibited, meets the demands of the printing machine manufacturers. It is suitable for automatic dosing systems as from Baldwin, Dosatron or Technotrans. It can be used in all dampening systems.
It neither affects the print plate’s surface of analog nor CTP plates. The print quality is consistent, because those deviations coming from the share of alcohol disappear. IPA STOP meets all demands without modifications of the printing press and without any disadvantages in comparison to IPA.

Qualities of IPASTOP

With IPA STOP, all technical advantages, that are expected when using dampening solutions containing IPA, will be preserved!
The correct pH factor will be constantly ensured in the long term. The huge number of different functions that are wanted for a trouble-free press run are fulfilled from IPA STOP. All demands will be achieved without modifications of the printing machine and without a reduction in quality.
IPA STOP shows - besides others - the following qualities and advantages:
- The pH factor will be stabilized between 4,8 and 5,2
- Special anti-microbiotic agents prevent the growth of algies, bacterias and fungies in the dampening circuit.
- It is free from Formaldehyd and the depot substances of Formaldehyd.
- It can be used trouble-free in all marketable continuous-type dampening systems like Heidelberg Alcolor, MAN Rolandmatic, Hydrocolor, Harris Duotrol, Koebau etc.
- Furthermore it can be applied in brush-type dampening systems and turbocentrifugal dampening systems.
- The surface tension is noticeable reduced, so that high-quality printing results such as perfect dot definition can be realised also with non-periodic screening.
- IPA STOP guarantees stability of the adjusted dampening settings, so that the deviation of the solid tone density and that of the 40 % tints will be very small.

Advantages of IPA STOP compared to IPA

- Simple handling of the processing of the dampening water
- The water has not necessarily be treated by osmosis
- It is neither bad for one’s health nor inflammable
- It is no safety hazard and is subject to certain rules for storage or fire prevention
- It is free of volatile organic compounds (VOCs)
- The drying of the inks goes remarkably faster
- In contrary to dampening with IPA, the gloss of the inks remains brilliant after drying
- The cleaning of the blanket and impression cylinder can be done after longer intervals
- The coatings of all marketable CTP plates will not be affected.

Instructions for the processing of IPA STOP

First of all, it is important to make sure that the dampening rollers are not furred. The hardness of the rubber should meet the rules of the printing machine manufacturers. Too hard rubber rollers will not transfer each kind of dampening solution properly. If the rubber rollers of the dampening system are furred too much, it is useful to treat them with a suitable decalcifier. Potentially, the reservoir and the pipelines should be cleaned from time to time.

Procedures for the first preparation and the use of IPA STOP

Condition for the best results in IPA-free printing is to empty the reservoir and to rinse the complete dampening circulation system efficiently with pure water. Afterwards, it is useful to mix for example 100 litres of the new IPA STOP dampening solution with 3 % of IPA STOP concentrate (3 % means 97 lt. water plus 3 lt. IPA STOP).
After filling the reservoir with this mixture, the dampening circulation should run for about 10 minutes. Then all should be drained off. Thus, one can be sure that there is no more pure water in the circulation system. After this procedure, the needed quantity of IPA STOP dampening solution can be prepared and filled in.

Dosage

Switch off the IPA doser. IPA STOP should be filled in the tank for the dampening solution additive. Setting of the doser: 3%

Chemical/physical data

Hard water over 8° dH (about 300 µS or more)
At a dosage of 3% IPA STOP by 8-9° C.: pH factor 4,75/4,80 – conductivity 1100 µS – surface tension 35 DIN/cm with hard water over 8° dH / 300 µS.