Package film and manufacturing method thereof, and packaging method for OLED panel

A package film, comprising:

• a polymer substrate, at least two organic buffer layers, and at least two inorganic barrier layers;
• wherein the at least two organic buffer layers and the at least two inorganic barrier layers are alternately stacked on the polymer substrate;
• each of the at least two organic buffer layers has a periphery on which a loop of water absorption layer and a loop of water barrier layer are sequentially disposed in a sideway outward direction, wherein the water absorption layer is disposed on and in direct contact with a surface of the periphery of the organic buffer layer and the water barrier layer is disposed on and in direct contact with the water absorption layer;
• each of the at least two inorganic barrier layers is formed of one or more of a graphene film, a mica sheet film, and a carbon nanotube film;
• and the stack of the at least two inorganic barrier layers and the at least two organic buffer layers is adhered to the polymer substrate through of one of the at least two organic buffer layers.