Duct Varnishes

Aqueous coating has many benefits if you get it right.

1 No anti-setoff spray powder needed

2 lower price compared to conventional overprint varnishes

3 faster backing up and turnround times (the inks dry 'through' the permeable coating)

4 an enhanced 'silky' feel to the print

The downside is that you either have to have a dedicated coater (tower or direct to blanket) or a convertible dampener (Epic/Dahlgren).

I don't know of any similar coatings or varnishes that give equal results through the duct. I did try a product called Terralacqua in the 80's it gave a brilliantly high gloss but it was very messy.

So the question is ... do any of you guys know of a duct varnish that ticks the above boxes?

 

We use TOYO MCOP Gloss Varnish and that stuff kicks butt. We run a 5/5 1040p and use it all the time. We never have to rack the jobs, even without the heater. The only downside to running 6 days a week like that, is you will go through a 55# box of R-27 powder and then some in those 6 days. When it comes to jobs that run on 60# litho and up, we run that TOYO MCOP Varnish and love it. The set up is amazing, and have no problem backing up jobs at all. And when you have 8 jobs in a row, all different paper sizes, short runs, it is a huge time saver to just hang and bang a plate than mess with packings all day. Just my humble opinion though.

 

Hi Lignum thanks for the feedback..I'll see if our TOYO agent carries that product, if so we'll give it a shot. I assume it's an oil based varnish as opposed to water based?

Do you run it overall (dry plate) or register varnish with damps on etc

 

Richard, if your running it all the time i suggest you Run it with Damps so otherwise you will get lots of framing if you running a smaller sheet size.
but if it is a small job here and their dry would probably be better and quicker.

 

We run it with dampeners, if not, just as was suggested, picture framing, and hickeys would be constant problem. We have never had any problems drying though. And yes is is oil based, soy I think, but don't quote me on that, lol.

The only reason we have run waterless with varnishes is when we had pearlescent tint varnish. The heaver the tint, the harder is is to run with water as the pearlsecent wants to pile on the dampner form and metering roller. After a little while of running the pearlescent wants to separate from the vehicle and once is starts, your done.