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Old 05-27-2007, 07:36 PM
LilShieste is offline
Join Date: Dec 2001
Location: CA East Bay
Posts: 1,623

What is this blue plastic thing in my soda bottle cap?

I have no idea what this thing is called, so I'll describe how to find one (so you know what I'm talking about):

1) Find a plastic soda bottle
2) Take the lid off the bottle, and look inside it
3) There is a blue plastic thing in the bottom of the cap
4) What is this blue plastic thing?
4b) (You can remove it with a pencil or a screwdriver - or fingernails, if they're long enough, I suppose.)

My best guess is that it serves as some sort of barrier against mold/mildew/etc. since a lot of moisture builds up in the bottle. (Since the moisture would rise from the soda and cling to the underside of the cap - maybe it's harder for mold to thrive on this blue thing, rather than on the bare cap.)

Any ideas?



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