Manufacturing process for a food warming pad

A manufacturing process for a food warming pad, comprising:

• step S1, forming a pad body comprising a first surface and a second surface having a groove by an integrated molding process;
• step S2, embedding a heating wire into the groove of the second surface of the pad body and exposing two ends of the heating wire out of a starting end and a terminal end of the groove respectively to form a heating body;
• step S3, applying an encapsulation glue into the groove with the heating wire embedded within to form a packaging body;
• step S4, drying the packaging body to solidify a surface of the encapsulation glue to form a first heating pad;
• step S5, standing the first heating pad at room temperature and pressure until the encapsulation glue is completely solidified to form a second heating pad;
• step S6, electrically connecting the two ends of the heating wire to a controller and fixing the controller to the second heating pad to form the food warming pad;
• wherein step S6 comprises:
• step S61, welding a circuit board of the controller to a first wiring terminal of a first end of the heating wire to form a third heating pad;
• step S62, welding a first connection end of a temperature control probe to a second wiring terminal of a second end of the heating wire and welding a second connection end of the temperature control probe to the circuit board to form a fourth heating pad;
• step S63, installing a first housing of the controller into a mounting port of the fourth heating pad, and installing the circuit board into the first housing to form a fifth heating pad;
• step S64, forming a mounting portion in the mounting port, forming two receiving grooves on an upper surface of the mounting portion, the two receiving grooves configured to receive the two ends of the heating wire, placing the temperature control probe between the two receiving grooves on the mounting portion and assembling a cover plate to the first housing to fix the temperature control probe to form a sixth heating pad;
• and
• step S65, locking a second housing having a control button to the first housing on the sixth heating pad to obtain the food warming pad;
• and
• step S7, testing the food warming pad.