Need Help Suggestions Eco-sol printable that will stick to foam?

3640 has a water based adhesive which is good for cost but not as aggressive as a solvent based one. 3165 is a similar product with solvent adhesive. That should work but obviously you would want to test before a long run. Arlon DPF8000 would work without a doubt but is on the pricey side and hard to remove cleanly.

 

+1 for the high tack material

try doing a really strong post-heat and see if it will secure the bond using a lower grade material.

 

Depending on the type of foam, a heat gun may destroy it leaving here with a sticker and a small blob of melted goo.

 

Try General Formulations 201-HTAP

 

That doesn't mean they are broke and don't have money. Most NFP groups are flush with cash. Every time one comes in for a quote they always play the we're a NFP and don't have funds. No different than a racer or church wanting a discount.
They play on your emotions.