So I recently got a Seal-a-Meal from Canadian Tire, and I thought I'd try fusing two pieces of recycled billboard vinyl tarp together with it. I had to do it twice with this particular vinyl in order to attain a good enough seal. But the ink doesn't migrate onto the machine and I'm happy with the result.
|Test tarp with two sealed edges.|
Well what do you know, the seal is waterproof. I filled it full of water, no leaks.