Well, here's what I found out. Not completely conclusive or anything, but for Tetra Pak, who seems to be the main manufacturer of juice boxes:
"The juice boxes are made of three things: paperboard, a sheet of aluminum foil, and the foil is covered with a layer of laminating film. Presumably, the laminating keeps the beverage from coming into direct contact with the aluminum foil."
This quote is from an email from the National Institute of Environmental Health Sciences, National Institutes of Health. I found their address and some starting information on aluminum and Alzheimer's Disease at http://www.niehs.nih.gov/external/faq/alum.htm,
and then emailed for further info.
Here's the entire email - I'm pretty impressed by its friendliness and thoroughness!
"What a thought-provoking comment and question you have sent in! From what I have been able to find in the process of looking for information about juice boxes is this:
1) I could only identify one manufacturer, Tetra Pak. They are a, "global company with offices in almost every part of the world."
2) I could not find any information on the site of the Consumer Product Safety Commission, however the Environmental Protection Agency
mentions juice boxes in some of their model recycling programs. It is a bit difficult because of the three layers of different materials
used in the packaging (see below).
3) The juice boxes are made of three things: paperboard, a sheet of aluminum foil, and the foil is covered with a layer of laminating film.
Presumably, the laminating keeps the beverage from coming into direct contact with the aluminum foil.
4) I was not able to find any health effects research that had been conducted on these boxes, so I do not know the answer to your questions
about how younger children might be affected by drinking from these boxes.
Finally, I attached a copy of the Environmental Report from Tetra Pak, in case you are interested in reading any of their information. I'm sorry
this has taken me so long, but I really had to dig for information on this one. Good luck, thanks for visiting the NIEHS website and for your
interest in environmental health!
[name and phone numbers deleted]
Public Affairs Specialist
NIEHS/Communications and Public Liaisonwww.niehs.nih.gov