▎ 摘　　要

NOVELTY - The utility model claims a multi-section heating method capable of realizing temperature control and ensure the graphene heating film uniform in each heating zone heating. the graphite heating film comprises graphene heating film main body, the graphene film heating body comprises up-to-down surface packaging layer, a silver paste circuit, graphene, UV glue, transparent substrate; the graphite heating film main body upper end provided with a first heat illegal region; the first illegal region two side provided with a first low-temperature area; the first illegal heat region and the first low-temperature region is provided with a high temperature region, the high temperature region is provided with a second low-temperature region, the second low-temperature region is provided with a second thermal region; the first low-temperature region and the line resistance of the graphene layer in the second low-temperature region less than the wire resistance of the graphene layer in the high temperature region. The graphene heating film can maximize effective use the heating surface, under the condition of the same heating area, the heating effect is better.