FDA Varnish for Thermal Transfer printing

[euman]

I have a current customer using digital labels with a protective varnish that meets FDA food contact requirements. Now they want the ability to add their own variable print with a thermal transfer ribbon. Does anybody here know of a TT imprintable varnish that meets FDA food contact requirements?

 

[Vee]

Not sure of a TT that will print and stay on top of the varnish, but why not use a spot coating and allow them to print in the unvarnished area?

Just a thought....

 

[euman]

That's a good thought, but the Indigo print-receptive material underneath is not TT imprintable. So we need to add a TT varnish that is also FDA approved.

 

[dkelley]

My concern would be that a TT ribbon would also have to be FDA approved

 

[euman]

Yes, there are some FDA-approved ribbons available.