CONDUCTIVE COMPOSITE PLASTIC SHEET

PROBLEM TO BE SOLVED: To offer superior mechanical strength, and raise a protection property relative to the contents of IC or the like by laminating a polystyrene based conductive resin composite containing a specific quantity of carbon black on the surface of a copolymeric resin sheet base material of styrene and maleic acid anhydride, and specifying the surface specific resistance value. SOLUTION: Copolymeric resin of styrene and maleic acid anhydride is used for the sheet base material. The content of maleic acid anhydride is preferable to be 1-30 wt.% in the copolymeric resin of styrene and maleic acid anhydride. The conductive resin composite is laminated either on one surface or both the surfaces of the sheet base material. The conductive resin composite includes 5-50 pts.wt. carbon black relative to 100 pts.wt. polystyrene resin. Also, as the surface specific resistance value exceeds 10 Ω, an antistatic effect can not be obtained sufficiently, and as being less than 10 Ω, IC can be destroyed due to too much conductivity. The base material layer resin composite or conductive resin composite are shaped into a sheet or film and then laminated by a heat lamination method or the like.