CONDUCTIVE COMPOSITE SHEETING

摘要

To provide a conductive composite sheet which has a small difference in physical properties between the machine and transverse directions and has high rigidity and folding endurance and which can easily be thermally formed into a tray or an embossed carrier tape. A composite sheet comprising at least one layer each of a substrate layer (layer A) made of a polystyrene resin and an ABS resin as the main components, a reinforcing layer (layer B) made of an ABS resin as the main component, and a surface layer (layer C) made of, as the main component, a polystyrene resin which contains a conductive filler, wherein the surface on at least one side is the above surface layer (layer C). Further, the surface layer (layer C) is preferably made of a composition containing from 2 to 100 parts by mass of carbon black per 100 parts by mass of the polystyrene resin. On the other hand, the substrate layer (layer A) and the reinforcing layer (layer B) preferably contain a specific amount of a styrene/butadiene/butylene/styrene block copolymer resin or the like.