Companies which sell liquids like drinks or shampoo depend on bottles made of plastic or glass for their packaging. But as customers have become more worried about the environment, many companies have begun working to develop paper bottles.

Paper bottles have many advantages. They are easy to recycle and weigh less than glass or plastic bottles, meaning they'll require less energy to produce and to move around.

A company called Paboco has been working with many large companies to develop paper bottles. Clearly, one of the biggest challenges is keeping a paper bottle from leaking (渗漏). Therefore, many companies are lining their bottles with a thin sheet of plastic. Though this liner can be taken away and recycled, many recycling programs don't have the right machines to deal with these liners.

A Danish beer company called Carlsberg is working with Paboco on a paper bottle called the "Green Fiber Bottle". In the future the company hopes to use a "bio-plastic" that will break down naturally over time. A company named Diageo has just announced the first paper bottle that's completely plastic-free. Instead of a plastic liner, a non-plastic coating will be used on the inside of the bottles. This should make the bottle fully recyclable. Diageo says they'll use the bottle with their whiskey in 2023.

However, there's still lots of testing to be done before paper bottles can replace glass or plastic bottles. Companies will need to see how long liquids can be stored in the bottles, and make sure the bottles don't influence the taste. But with so many companies working toward the same goal, it's likely that we can expect to see paper bottles on store shelves in the near future.