▎ 摘　　要

NOVELTY - The utility model model claims an extensible heat preservation plastic film, comprising a film main body, the inner part of the film main body is provided with a vent hole, the outermost layer of the film main body is provided with a hydrophobic layer, the lower part of the hydrophobic layer is provided with a first film layer, the lower part of the first film layer is provided with a bonding layer, the bottom of the bonding layer is connected with an insulating layer, the lower part of the insulating layer is connected with a graphene layer, the lower part of the graphene layer is provided with a second film layer, the bottom of the second film layer is connected with a waterproof ventilating layer, the utility model material not only has good ductility, but also has good flame retardance, it can prevent the combustion of the flame, it is ignited in time and will not burn, and the surface and convex of the hydrophobic layer are different, it is good for discharging water, it will not cause surface area water, through the setting of the bonding layer, it can ensure the stability of the inner part of the film, through the setting of the insulating layer, it can leave the temperature in the film, and prevent the loss of heat.