Thermos with their own hands. How to make a cork for a thermos bottle?

For any traveler, fisherman and just a person who adheres to an active lifestyle, a thermos is literally irreplaceable. Especially the need for it is felt in the cold season, when people buy hot drinks to just warm up. Someone does smarter and carries them with him in advance. However, this will require a container with a low thermal conductivity, which sometimes does not have the least possibility.

The only way out is to make a thermos by hand. How to do this? This article will tell.

Tank device

Most people are familiar with the Dewar's vessel. It was on its principle that a thermos was created: a container of a larger size is placed a container that is smaller in diameter, and between them a vacuum is created by the machine method, which considerably reduces the thermal conductivity.

Of course, at home, to achieve it will not work, so the finished product will be less effective. In this case, the material medium will replace the foil, and the thermos with their own hands (how to make a container for storing liquid, told below) will not get much worse than bought.

The easiest way is to make the desired of plastic bottles.

Instructions for creating a thermos

To create the named capacity you will need:

• Two bottles, 500 ml and 1500 ml respectively;
• Sharp scissors;
• stationery knife;
• Aluminum foil;
• Several sheets of newspaper;
• Scotch tape wide.

And now we'll figure out how to create a thermos with our own hands - how to make it, for example, from plastic containers:

1. In the future case, cut the bottom and neck, in several places vertically cut the top of the bottle. This is required in order that the smaller container denser enters the hole.
2. Unscrew the intact bottle (flask) with foil, the glossy side of which should remain inside.
3. She also wrapped in newspaper sheets, so that the container entered the body very tightly, preferably with interference.
4. Paste the small bottle into the big one. Return the cut bottom to the place so that the details are overlapped. For greater reliability, fasten 3-4 layers of wide adhesive tape.
5. The body is wrapped with foil and adhesive tape - this will help to further reduce the thermal conductivity.

Terms of use

Create a plastic thermos with your own hands (how to make it, we described in the article) is easy. But it is, of course, somewhat specific. In operation, one simple ban should be taken into account: never pour hot boiling water into a container.

High temperatures are fatal for a given material if it has insufficient density. In this case, the container will undergo a severe deformation, and in certain situations it will even burst. Thus, the thermos will have to pour in the liquefied liquid.

To avoid this, use a glass container as a bulb. It withstands high temperatures and has a lower thermal conductivity.

In addition, although soft plastic does not break, but it is still undesirable to drop it - the material can burst.

How to make a thermos by hand from a jar

For fans of winter walks this option is just perfect. A thermos made from such a container will allow to keep any solid food hot for several hours. However, it is better not to use this variant for storage of liquid.

To create this dish you will need:

• Plastic can with lid;
• Polyurethane heater;
• Wide scotch tape;
• scissors.

Step-by-step instruction:

1. Cut the rectangle from the insulation, suitable in size to wrap the sides of the can. Leave a small allowance, put the edges of the canvas overlap. Secure the joint with adhesive tape.
2. Put the container on the remaining polyurethane, describe it one. The resulting circle is cut out and attached to the sides of the future thermos with the help of adhesive tape.
3. Do the same with the lid. For better reliability of the connection place it is necessary to fix with adhesive tape.

That's all - the thermos is ready.

Making a stub

Sometimes, when the native mechanism goes out of order, people have a question: how to make a cork for a thermos by oneself? This will require:

• Vise;
• Aluminum foil;
• Styrofoam;
• Food film.

The easiest way to return to life is an old cork. It is easy enough to steam it out by grasping it in the vise, and so keep it until it is completely cooled. Then it is necessary to wrap the cap with foil - this will save it from destruction under the influence of high temperatures.

And to make a new cork (preferably before you make a thermos with your own hands), you need a piece of foam. From it, an element of the desired size and shape is cut out, which is covered with food film to avoid shedding into the liquid.

If such a stopper plug pushes, then it will be enough to pierce through with a needle from the syringe. It is desirable to make a hole in the center, otherwise the plug may deform.

Conclusion

Self-constructing a container for storing water and food, as it turned out, is quite simple. Of course, one should never forget about its lesser effectiveness in comparison with a shopkeeper and, if possible, do not spare the money for its acquisition.

But one weighty advantage of such a thermos is invariable: it is not a pity to spoil it, as production takes a little time, and the cost of capacity tends to zero.