I have had a 1L narrow mouth Nalgene bottle on my desk for couple of months now. I just noticed that the Nalgene logo and "Made in USA" printing has softened up and can be scraped off with VERY light pressure.

The graduations on the other side are still firm and hard.

Has anyone else experienced this?

It's not affecting the utility of the bottle. I'm just wondering why it's happening.


(I work in a print shop, and my theory is airborne solvents.)