| 摘要 |
PURPOSE: A manufacturing method of a protective film is provided to manufacture the protective film which is not damaged by other factors, and to improve strippability and cuttability with initial adhesiveness and proper rigidity. CONSTITUTION: A protective film includes a base film consisting of polypropylene based resin. An adhesive layer including vinyl acetate-based resin containing vinyl acetate 9 ~18 weight%, is laminated on one side or either side of the base film. The adhesive layer includes hydrogenated hydrocarbon resin-based adhesion aiding agent included 0.5 ~ 5 weight%. A melt index of the polypropylene based resin is 3 ~ 9g / 10 minute. A softening point of the adhesion aiding agent is 85 ~ 130°C.
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