The difference between an insulation board used for food insulation and an insulation box lies in the different shapes. One is a board, and the other is a box insulation board. You don't need an insulation box to plug in electricity. The insulation box is used for insulation. The heat preservation box is a kind of food showcase with the functions of heat preservation and humidity display. This machine adopts the principle of electric heating.

Different foods use different heating methods. The product has three layers of glass, a height-adjustable display lattice and an inner room equipped with lighting devices. The top cover can decorate the radian design of the billboard slope, which is beautiful and generous, with good thermal insulation and good energy-saving display effect. The heat preservation cabinet adopts high-efficiency electric heating tube, which has simple operation, high working efficiency and long service life.

Advantages and disadvantages of insulation board

The food insulation board is heated by the electric heating wire below and guided to the plate containing food through the heat conducting material above, so as to achieve the heat insulation effect. At present, most of these products are heated by metal heating film, metal resistance wire, ceramic heater and carbon fiber.

The heating speed of metal electrothermal film is very slow, and it usually takes 10- 15 minutes to reach the temperature. Therefore, many manufacturers generally require consumers to preheat their products 10 minutes in advance, otherwise the hot dishes will be cold when served.

Metal resistance wire heats up quickly, but like electric blanket, metal resistance wire will produce electromagnetic radiation. For an electrical product that advocates a healthy diet, there is no health with electromagnetic radiation.