| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method which prevents the occurrence of soiling on a surface of a polishing roll during extrusion sheet molding, which does not deteriorate the appearance of the sheet and which enables the stable production of a thick multilayer sheet product, and to provide a multilayer sheet with a good appearance, excellent light transmittance and continuous antistatic performance. <P>SOLUTION: In the coextruded multilayer sheet, a coating layer, which is composed of a thermoplastic resin B not containing a polymeric antistatic agent, is provided on each of both the faces of a core layer which is composed of a thermoplastic resin A containing the polymeric antistatic agent. A base resin constituting the thermoplastic resins A and B is a transparent resin. The multilayer sheet is an antistatic multilayer sheet, the image definition of which is 60% or more, and whose initial electrification voltage in the measurement of the half life of the electrification voltage is 2.5 kV or less. <P>COPYRIGHT: (C)2008,JPO&INPIT |
