I was wondering if plastic--specifically soda--bottle caps are made of the same plastic as the bottles themselves? Reason for asking?
Here, in Calif., can and bottle deposits (but not tax on deposits) are redeemed by weight. I've observed that some folks submit the bottles with caps removed; I always but caps back on--for whatever weight that all those caps might add...when returning, say, a whole garbage can of bottles.
So far, no one has ever questioned the caps...but who knows when I might encounter someone who's overly diligent...or misinformed?
Is there a "chemical" justification I could use if any overzealous redemption person ever challenged the caps on my recycled bottles?