Electroconductive composite plastics sheet

Abstract

The invention relates to an electroconductive composite plastics sheet preferable as a carrier tape for accommodating electronic parts. Specifically, it relates to an electroconductive composite plastics sheet comprising a thermoplastic resin-containing sheet substrate and an electroconductive resin layer formed on the surface of the sheet substrate, wherein the sheet substrate comprises a styrene-based resin, and the electroconductive resin layer is a layer consisting of an electroconductive resin composition comprising (A-1) styrene-based resin, (A-2) carbon black, and (A-3) one kind of copolymer, or a mixture consisting of a combination of two or more kinds of copolymers, obtained from ethylene and other monomers copolymerizable with ethylene, wherein the content of the other monomers copolymerizable with ethylene is 6 to 14 mass % on the average, and the ratio in thickness of the sheet substrate and electroconductive resin layer is in the range of 4/1 to 20/1, and the total thickness is in the range of 0.1 to 1.0 mm.

1 . An electroconductive composite plastics sheet comprising a thermoplastic resin-containing sheet substrate and an electroconductive resin layer formed on the surface of the sheet substrate, 
 wherein the sheet substrate comprises a styrene-based resin and the electroconductive resin layer is a layer of an electroconductive resin composition comprising:    (A-1) styrene-based resin,    (A-2) carbon black, and    (A-3) one kind of copolymer, or a mixture consisting of a combination of two or more kinds of copolymers, each obtained from ethylene and another monomer copolyermizable with ethylene, wherein the content of the other monomer copolymerizable with ethylene is 6 to 14 mass % on the average, and    the ratio in thickness of the sheet substrate to electroconductive resin layer is in the range of 4/1 to 20/1, and the total thickness of the electroconductive composite plastics sheet is in the range of 0.1 to 1.00 mm.    
   
   
       2 . The electroconductive composite plastics sheet according to  claim 1 , wherein the component (A-3) is a copolymer comprising a combination of a copolymer wherein the content of the other monomer is 8 mass % or less with a copolymer wherein the content of the other monomer is 15 to 30 mass %.  
   
   
       3 . An electroconductive plastics container comprising the electroconductive composite plastics sheet according to  claim 1.