Flexible heat preservation board with heating wire encapsulated therein

A flexible heat preservation board, comprising:

• a heating pad, provided with a power supplier, wherein a first side of the heating pad is defined with a groove, the groove is arranged in a winding pattern, and the first side of the heating pad is also arranged with a plurality of projections having an equal height;
• a heating wire, wherein both ends of the heating wire are connected to the power supplier;
• and
• a liquid adhesive;
• wherein a first inner surface of the groove is provided with a first protrusion, a second inner surface of the groove is provided with a second protrusion, and the first protrusion and the second protrusion face each other;
• a distance between a first edge of the first protrusion and a second edge of the second protrusion is less than a diameter of the heating wire, a bottom surface of the groove, a lower surface of the first protrusion and a lower surface of second protrusion define an open accommodating space for receiving the heating wire;
• a first gap is formed between the lower surface of the first protrusion and a first outer surface of the heating wire;
• a second gap is formed between the lower surface of the second protrusion and a second outer surface of the heating wire;
• the liquid adhesive encapsulates the first protrusion, the second protrusion, and the heating wire in the groove;
• and both the heating pad and the heating wire are flexible.