▎ 摘　　要

NOVELTY - The utility model model graphene a health preserving packaging film, the lower shell is provided with a placing groove, the placing groove is provided with a heat insulating layer, the upper part of the lower shell is provided with an aluminium upper cover, the lower part of the aluminium upper cover is provided with a reinforcing grid, the grid hole of the reinforcing grid is filled with heat conducting filler, the placing groove is orderly provided with a PVC protective layer from bottom to top, an aluminium foil layer, a PET protective film, a carbon heating layer, a PET protective film and a PVC protective layer, two sides of the carbon heating layer are provided with high purity copper strip and high purity silver paste strip; The utility model model is matched with the aluminium upper cover through the lower shell, which effectively protects the paving use of the packaging film, avoids the stone hurting the packaging film, prolongs the service life of the packaging film, at the same time, the heat insulating layer in the lower shell can effectively avoid the heat at the bottom of the packaging film from being absorbed by the floor plate, which causes the loss of heat energy; The reinforced grid under the aluminium upper cover does not affect the high-efficiency transmission of the heat energy while reinforcing the stress intensity of the upper cover.