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Abstract
To date there are several ways to insulate shoes. Among them: the use of quality leather raw materials for the outer parts of the upper and natural fur for the inner parts of the upper of the shoe; application of insert insoles from heat-insulating foil; use of special insoles with a heating element Successful solution of the problem of heating the feet with the help of special insoles will diversify the range of shoes for the cold season, namely shoes for children, military, the elderly, people with impaired blood circulation in the vessels, hunters, fishermen and athletes. Currently, there are many imported thermal insoles on the footwear market, the prices of which are often too high for the average Ukrainian buyer. Therefore, it will be appropriate to make Ukrainian shoes of good design and good quality with special insert insoles at lower prices to meet the consumer needs of our consumers. It will also be possible to make only thermal insoles, which can be inserted into any shoe. Therefore, the topic of this scientific article is very relevant. The article analyzes all existing methods of heating the foot in warm shoes, considers the types of available insoles with heating. Such types of insole heating as chemical and mechanical are considered. Based on previously obtained experimental data, calculations were performed, based on which the required diameter of the wire to be used for heating the insoles was determined. The principles of production of insoles with a heating element which will be used for heating of feet in the cold period of the year are stated. An inexpensive foot heater has been developed, namely, an insole with a heating element made of wire cantaloupe A-1 with a diameter of 0.46 mm, which can be activated from absolutely any type of battery, from laptops, Powerbank, etc.
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