Nalgene Bottles
Nalgene bottles have been produced for over 60 years, and they've been marketed toward the earth-friendly outdoorsman since the 1970s. These bottles are made of a thick, polycarbonate plastic (most people know it as Lexan, one of the wonder plastics produced by General Electric) that is highly durable, impact- and heat-resistant, and that can be used over and over again. Though there have been a slew of accusations about the health hazards these bottles cause, they're still used by many people, and they're still available for purchase for those who need them.
Lexan
Lexan is a trademarked product of G.E. Lexan is a polycarbonate thermoplastic, and the process of manufacturing it is relatively simple. The plastic polymer is created by reacting Bisphenol A with carbonyl chloride, which is also known as phosgene. To get the Lexan in the shape of a bottle and not a sheet, the plastic is molded and then released once it's been hardened. Any dyes will be put in the plastic while it's in the mold. After molding, the bottle is tested for leaks, and any rough edges are smoothed away so that it's ready for use.
Bisphenol A
There has been a great deal of controversy over the effects of Bisphenol A on the health of those who use Nalgene bottles. Some tests suggest that Bisphenol A will leach out into the food or drink being kept in a Lexan or other polycarbonate bottle from the surrounding plastic. This chemical upsets hormone balances in those who are repeatedly exposed to it. However, Nalgene has been phasing out products that use Bisphenol A to try and eliminate the risks to its customers.
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