Patent ID: 7455896

Claim:
A carrier tape body comprising an embossed tape continuously having pockets for containing an electronic component sealed with a cover tape, wherein when the cover tape is peeled off with a peeling angle of from 170 to 180 degrees at a peeling rate of 300 mm/min in a peeling amount of 112 mm: (a) the peeling static electrification amount of the cover tape is from −9 to +9 nC when the cover tape has a surface resistivity of at least 10 11 Ω and (b) the peeling static electrification amount of the cover tape is from −3 to +3 nC when the cover tape has a surface resistivity of less than 10 11 Ω, wherein the embossed tape comprises a styrene type polymer selected from the group consisting of polystyrene, styrene-butadiene copolymer, hydrogenated adduct of styrene-butadiene copolymer, styrene-butadiene random copolymer, styrene-butadiene block copolymer, styrene-isoprene copolymer, styrene-maleic anhydride copolymer, high-impact polystyrene, and a copolymer comprising a styrene derivative and a conjugated diene group, wherein the embossed tape also comprises a polycarbonate selected from the group consisting of a bisphenol A type polycarbonate comprising an aliphatic carbonate, a mixture comprising the bisphenol A type polycarbonate and less than 50 wt % of polyethylene terephthalate, and a mixture comprising the bisphenol A type polycarbonate and less than 50 wt % polybutylene terephthalate, wherein the cover tape comprises a styrene type copolymer, wherein the styrene type copolymer is a copolymer of a styrene type monomer with a conjugated diene type monomer or a high-impact polystyrene, wherein the styrene type monomer is selected from the group consisting of o-methylstyrene, p-methylstyrene, p-tert-butylstyrene, and α-methylstyrene, and wherein the conjugated diene type monomer is selected from the group consisting of 1,3-butadiene, 1,3-pentadiene, 1,3-hexadiene, and 2-methylpentadiene, and wherein the cover tape also comprises an ethylene type copolymer selected from the group consisting of an ethylene-1-butene copolymer, ethylene-vinyl acetate copolymer, ethylene-butyl acrylate, ethylene-styrene copolymer, an ethylene-maleic anhydride-acrylate copolymer, and mixtures thereof, wherein the embossed tape has a part which faces the cover tape, wherein the part of the embossed tape which faces the cover tape comprises at least one polymer selected from the group consisting of a styrene type polymer, a polycarbonate, a polyester and an ethylene type copolymer, and wherein the cover tape has a part which faces the embossed tape, wherein the part of the cover tape which faces the embossed tape comprises a styrene type copolymer and/or ethylene type copolymer.