| 摘要 |
PURPOSE:To modify the surface of a film so as to give good durability thereto, by forming modifying monomer layers on both surfaces of a plastic film, covering these surfaces with sheet materials and graft-polymerizing the monomer with both surfaces of the film by irradiation with electron beams. CONSTITUTION:Liquid layers of a modifying monomer or different modifying monomers (e.g., methacrylic acid) or liquid layers of a monomer solution are formed on both surfaces of a plastic film (e.g., polyethylene film). A sheet material (e.g., paper or a plastic sheet) is laid on the surface of each liquid layer, which is irradiated with electron beams from the side of the corresponding sheet material to graft-polymerize the monomer in the liquid layer with the corresponding surface of the plastic film. The laid sheet materials are peeled from both sides of the plastic film, and unreacted monomer (solution) remaining on the surface is removed. Thus, the surface of the film can be modified.
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