We have a request to screenprint chew toys for dogs.. just curious if any of you guys have had any experience with this regarding FDA requirements / durability against chewing. The fabric is a 100% heavy cotton canvas. We did a test with Nazdar 9500 series and gave it to a dog for a chew test and it broke down pretty quickly.
I guess start from a point where no ink is safe to eat and work backwards to a point where the only safe ink would be made from food coloring. Most proper chew toys are not printed, their designs are molded into the forms.
My parents last dog died when it ate one of my moms underwear. So even 100% cotton may not be safe, certainly make sure the toy has no elastic bands in it. Your best bet would be to digitally embroider the design on the canvas with cotton thread.