In order to prevent the freshly cooked food from getting cold, many families will buy an insulated table cover, which can keep the food warm to a certain extent. The principle is that the insulation layer made of aluminum foil is heat-resistant and reflective, and the pearl cotton interlayer coated with aluminum foil is used as the insulation layer to isolate thermal convection, thus achieving the effect of insulation. The thermal insulation effect of the dining table cover can meet the daily needs. According to the test, the temperature can be kept for about 15-20 minutes. If there is a higher demand for heat preservation, you can choose to electrically heat the vegetable cover. Let's take a look at the thermal insulation effect of the watch cover. First, why can the table cover keep warm?

After cooked food is served on the table, it is easy to get cold, especially in cold winter. When all the dishes are ready, the dishes cooked first often get cold. Cold dishes are not only not so delicious, but also have some irritation to the stomach. Therefore, many families will buy a table cover and use it to cover the newly cooked food to achieve the purpose of heat preservation. What is the principle of table cover insulation?

The table cover with thermal insulation function is generally composed of Oxford cloth and aluminum foil. The principle of heat preservation is as follows: the dining table cover has two layers besides Oxford cloth, and the inner layer is aluminum foil, which can resist heat and reflect light; The middle layer is a pearl cotton sandwich, and the surface layer is also plated with aluminum foil. This layer is a heat insulation layer, which can avoid air convection and heat transfer inside and outside the dining table cover and form an independent closed heat lock space, thus achieving the effect of heat insulation.

Second, is the insulation table cover really insulated?

The table cover with thermal insulation effect is very practical in daily life, which allows us to eat hot meals. However, if the insulation effect of the table cover is not so ideal, the practicality will be greatly reduced. Is the insulation effect of the table cover good?

According to the principle of thermal insulation table cover, we can see that the thermal insulation effect of table cover is there. According to the test, at the room temperature of 20-25 degrees, the temperature of the food dropped by 5-8 degrees after 30 minutes, which is much slower than that of the food without the table cover. Of course, this is in the case of relatively high temperature. In daily use, it can be kept warm for about 15-20 minutes (shorter in winter), which is enough to finish other meals.

Generally speaking, the thermal insulation effect of the table cover is quite good, which can meet the daily needs. If there is a higher demand for heat preservation, you can consider buying a special heat preservation food cover with electric heating.