| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a base film for producing a protective film which does not entrain air bubbles when produced as a rolled object, which can be quickly and easily pulled out from the rolled object and which does not entrain the air bubbles when adhered onto an adherend, an optical component in particular. <P>SOLUTION: The base film is a laminated film which has at least two layers each comprising a polyolefin resin and these two layers each constitute an outermost layer of a side where an adhesive agent is laminated and an outermost layer of a side where the adhesive agent is not laminated. In the base film, average roughness (Ra) of a surface of the side where the adhesive agent is laminated is 0.25μm or less and average roughness (Ra) of a surface of the side where the adhesive agent is not laminated is 0.30μm or more. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
