| 摘要 |
The present invention relates to a multilayer film comprises a base material layer and a skin layer on one side or both sides of the base material layer, wherein the skin layer has oligomer content of 0.3-0.8 wt%, comprises polyester having unique viscosity 0.66-0.8 dl/g, and has surficial roughness with Ra of 10-30 nm and Rz of 450-1,000 nm according to KS B0161. The multilayer film according to the present invention has low oligomer properties, high transparency and surficial properties, excellent coating properties and workability, and has an effect of low migration of an oligomer component. The multilayer film according to the present invention is effectively used in not only an adhesive surface protection film, but also a carrier sheet including a ceramic sheet, an electrode sheet, etc. based on the effect. |
