Lining up 16 at a time to fairly tight specs (1/8" or so?) would be really difficult.
Most folks will tell you to sub it out, and I'd likely agree. They're probably printed flexo style, IE
one long roll that gets chopped down and sewn.
In my younger years I would have figured out how to do it on a flatstock press, one at a time.
500/hr is easy, just make sure you charge enough.