| 摘要 |
A film has an outer surface of a vinyl polymer having a grafted fatty amide. The grafted fatty amide does not migrate within the film. The fatty amide is present on the surface of the film immediately after the formation of the film, and does not have to bloom to the surface of the film to be effective as a slip agent. The fatty amide can be grafted to the polymer by the addition of the fatty amide, and a peroxide, to the extruder, with the heat and pressure within the extruder providing an environment for the grafting reaction to the molten polymer being extruded. |
