Bumping because this is starting to piss me off.
I did a bunch of shopping today and just opened a few items--some coated metal shelf organizers (so I can stack more items in pantry closet) and a sheet of material that is supposed to help keep the bottom of my oven clean (I use heavy duty foil currently). The organizers weren't in actual boxes but they did have a cardboard wrap around them for labeling. The oven thing came in a long narrow box.
Both boxes are plastic laminate although I could not peel the laminate away as easily as the box when I first posted this. And I looked up information on laminated cardboard recycling, which is basically that it's a no, the plastic is a contaminant when the material is shredded.
Maybe the laminate reduces tearing somewhat (not a lot, I could tear the stuff pretty easily) and maybe it protects against moisture, but my opinion is that this really is not necessary. Anyway, I do think this cardboard should be labeled non-recyclable.