Stoppers for a thermos: types and methods of manufacture
Thermoses are referred to as utensils, allowing you to keep the temperature of food in it for quite a long time. They are simply necessary for travelers, indispensable for long walks, during picnics or fishing. In a thermos, you can keep hot not only tea or coffee. There are types of thermal dishes that can keep the first and second courses hot. Cold and hot dishes can be stored in thermoses for up to a day.
Such storage allows even after 8 hours to pour roasting tea from a thermos, which is very convenient if you cannot use the kettle at the moment. With frequent use, cork products can lose their original appearance, they can pass water, as a result of which thermal insulation is violated.
Thermoses designed for liquids are considered the most popular and compact. The flask in such models has a narrow neck, which is why heat loss through the cork is not so intense.
Thermoses can be:
- made of stainless steel;
- with pneumatic dispensers;
- with glass flasks;
- vacuum models;
- thermos coffee pots;
- for the soup.
Many appreciated the convenience of a model with a valve for dispensing fluid. Stainless steel tanks are made. This allows maintain a high temperature of water in the tank for at least 8 hours. It can be filled with both cold and hot liquid. For many, a specially built-in removable valve is very convenient, which protects against spills during capsizing. One type of thermos is not suitable for storing first dishes and drinks in it.
Tea and coffee containers are made with a narrow neck, wide-neck containers are suitable for storing food products in them. There are universal models that have an extra narrow neck. Cold dishes and drinks in a thermos will keep the temperature 2 or 3 times longer than hot ones.
For metal products with a glass bulb, various types of corks can be used. So, balsa plugs are popular in a tissue sheath. No less popular models with traffic jams from pressed natural crumbs or whole cork. Products with glass flasks are considered the most popular. According to their characteristics, they will not be inferior to thermoses with a steel flask. In glass containers, it is worth storing drinks that have bright and persistent flavors.
The screwed-up convenient cover will protect from spilling. The contents will remain hot in such a vessel for up to 24 hours.
When choosing a thermos, it's worth looking at what material the cork consists of. Some choose models made of the so-called balsa (this is a light wood), most buyers prefer models with cork stoppers.
Varieties of traffic jams:
- from balsa (light wood) for a glass flask, the product is covered with a fabric sheath;
- from natural cork;
- thermos stopper with thread for strainer;
- screw plug with or without button;
- many models have a double button;
- cork-button with a lever.
Thermos sleeve It is also a popular model among buyers. On the website of the online store you can buy a set of plugs, consisting of two pieces 4.8 in 4.8 cm in size. The cork is designed for the volume of a thermos 350 and 500 ml. Thermos cap with button increases the convenience of using a thermos. They are made of plastic, a button and a silicone sealant are provided in the model. The cork is screwed with a thread. Opens with a button. Models with a button are designed for thermoses with a narrow neck. It opens very simply thanks to the button located in the center.
The thread twists tightly. Silicone sealant fits snugly against the wall of the product, thereby maintaining the temperature of the beverage in the container for a long time. When liquid flows out from under the cover, the reason for the passage of water should be clarified. On screw-plug models, replacing a worn part can be difficult. To find out the reason, you need to clean the lid and wash it thoroughly. Usually this is enough to stop the cap from passing water. If this does not happen, the plastic plug should be replaced.
How to restore an old cork?
When buying a product, it is better to verify its authenticity. Products from China often do not differ in appearance from the original products, but can leak after the first days of use. The Chinese consumer goods, which flooded the country's markets, are characterized by a low price, but at the same time, the low quality of the goods. This also applies to thermal cookware. When buying a product, it is better to give preference to models of well-known trusted brands. In this case, there is a high probability that the product will not fail soon. In addition, many manufacturers give a lifetime warranty on their goods, and in case of breakdown of the original product they can replace the part. Famous brand thermoses will continue to keep warm for more than 30 hours.
If you use a thermos often, then over time, the cork may stop retaining heat, sag and let liquid pass. In the event that this happens, do not throw away the container, it is better to try to replace the failed part. Owners of thermoses with corks made of cork wood know that such locking devices begin to deform, crumble and lose their properties over time. Crumbs can get inside the container, which negatively affects the appearance of the drinks and their taste.
You can try to restore such a device yourself.
- Drill a hole in the cork product, put a cone cut out of wood into it. As a cone, wooden sticks for sushi or something similar are suitable. Thanks to such actions, you can seal the cork, returning it to its original shape. Before driving a cone into the product, it is recommended that the plug be steamed well.
- In order not to drill a hole in the product, you can simply steam the cork. In this case, place the element in boiling water and then clamp it in a vice. Wait until the locking device has cooled completely. Only after cooling can the plug be removed and the device used further.
- If the old cork has dried up, you can wrap it several times with an ordinary medical plaster. Screw a little food foil over the patch and insert the part in the neck. It is necessary to scroll it a little, so that the plug goes deeper, thereby ensuring complete sealing.
In the event that this procedure did not bring the desired result, the cork should be replaced by making it yourself from other materials.
How to do it yourself?
If the plug of the cork tree begins to break, you can simply wrap it with foil. Such a simple manipulation will not allow particles to get inside the flask. The stub itself can serve for some more time. Since the cork tree does not grow at our every step, improvised materials can be used to replace it. The easiest way to use for these purposes regular foam. To do this, you need to take a piece of polystyrene foam, then determine the size necessary for the manufacture of the part, and cut out the element, taking into account its diameter and size.
Polyfoam is a very light material, it does not deform. When filling a thermos with boiling water, it is possible to push the foam element. To exclude the pushing of the cork, you need to pierce its middle with a large needle.
So that the foam does not crumble, the foam product is wrapped with cling film.
What can be made of?
You can make an element for a stub at home. For this, an ordinary champagne cork is suitable. You need to take it and wrap it with a thick film of polyethylene. Pour food sealant inside. A home-made product is inserted into the neck until the sealant has time to harden. Keep the cork in this form for at least a day. After 20-25 hours, the film is removed. The cork is now ready for use. When applying sealant, remember that it has an unpleasant smell, so it is better to apply it on the balcony or on the stairwell, as well as in the yard.
In addition to champagne corks, wine corks can also be used. To construct the element, you need to take several wine plugs, connect them in the form of a flower, cutting the edges, and gluing them, for example, with nail polish.
This method was recognized as more time-consuming, therefore it is more expedient to use the previous option for these purposes.
On how to make a cork for a thermos, see the next video.