| 摘要 |
PURPOSE: A manufacturing method of a light diffusion film in which a pattern and an embossing shape are arranged is provided to arrange strong physical properties with respect to heat and shock transferred from the outside. CONSTITUTION: A first raw material for forming a base material layer and a second raw material for forming an upper surface layer and a lower surface layer are prepared(S101). The first raw material is inserted into a main resin path of a third floor T-die. The second raw material is inserted into a sub resin path of the third floor T-die. A raw material is extruded to a third floor sheet in which the upper surface layer and the lower surface layer are arranged(S103). A pattern is arranged on the upper surface layer by penetrating a pattern roll with the third floor sheet. An embossing shape is formed on the lower surface layer(S105).
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