Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
I bet that the big boys have a folding and gluing machine.Would some type of double stick tape be any easier to apply than glue?
There are a few different options for the glue. 3M makes sheet-stock double sided adhesive #(7952 would work) Shear it into strips and set up a laminating station with jigs on a vacuum table.You could also look into screen-printable adhesives.Sorry, I'm no help on the folding. Are you die-cutting sheet card-stock that you've screenprinted? Are you using a creasing rule in the die to form a fold line?
Eric, try DABnSEAL