The best collapsible lantern is probably the one that is made of plastic. This kind of lantern is lightweight and easy to handle. The big disadvantage of plastic is that it is difficult to maintain in the harsh climate of Europe, and it is not recyclable.
Aluminum can be used as a collapsible lantern and still keep the light brightness and quality. Aluminum has a good strength to weight ratio.
Aluminum is the most expensive material to use as an insulator. It has more problems with chemicals and impurities. It does not have a reputation for many useful qualities.
Aluminum as a collapsible lantern is only worth using for industrial use or if you are making candles. Once lit the candle will be cool to the touch and very small. To light more candles a special type of aluminum firesteel can be used.
Some people think that the safety issues with aluminum are as serious as those of copper, and in a way they are. The torch head of the collapsible lantern can break and can injure or kill you if used carelessly.
If you use a collapsible lantern you will see that it does not conduct electricity. It does not contain mercury, and it has no emissions. You will find that it is cheap to buy and has a long life.
The reason it is so inexpensive is that the output power is much less than for electric appliances and is only about a hundred watts. When a weather emergency comes, you will not have to worry about your candle going out when it is dark.
The durability of this type of lamp makes it very attractive to people who like to travel and spend time in unusual places and with interesting people. It does not have the same negative stigma of water proofing that other kinds of lamps do. Its insulation keeps it from being soaked in the rain.
It is difficult to buy a lamp for home use which has a permanent shape because of the advances in modern life. It is not that it would be difficult to make a collapsible lamp, but it requires a lot of skill to figure out the ideal shape. Many attempts have been made to invent such a lamp, but all have failed.
The best collapsible lantern might be a combination of aluminum and magnesium. This is an older product which was tried and found to be more durable.
Aluminum and magnesium combine their strengths to produce a lightweight and strong lamp. In the latter case it also can be used as a lamp for industry and heavy industrial applications. It has to be soldered into a frame before it can be used.
Aluminum and magnesium do not combine to make an anti-bacterial pad, so care must be taken if you plan to use it as a disinfectant. There are lots of uses for a collapsible lamp, but it is not at all as good as a traditional oil-based plastic candle. You will find it easy to find a collapsible lantern that is light weight and compact, while being sturdy and safe.