Cover tape
AssigneeDenki Kagaku Kogyo Kabushiki Kaisha
InventorsHisatsugu Tokunaga, Yusuke Tanazawa
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Abstract
Provided is a cover tape that has a small range of stripping strength and generates little static electricity when stripped at a high speed. The cover tape according to the present invention comprises at least a substrate layer, an intermediate layer, a charge transfer layer, and a heat seal layer, characterized in that (A) the charge transfer layer containing an acid-modified polyolefin resin and a conductive agent, and (B) the heat seal layer containing (a) a thermoplastic resin component composed of an acrylic resin, and (b) a styrene-conjugated diene copolymer or a hydrogenated resin thereof, the mass ratio of the two components ((a)/(b)) being 20/80 to 80/20.
Claims12
A cover tape comprising at least a substrate layer, an intermediate layer, a charge transfer layer and a heat seal layer, characterized in that
- (A) the charge transfer layer comprises an acid-modified polyolefin resin and a conductive agent, and
- (B) the heat seal layer comprises (a) a thermoplastic resin component consisting of an acrylic resin, and (b) a styrene-conjugated diene copolymer or a hydrogenated resin thereof, the mass ratio of the two components ((a)/(b)) being 20/80 to 80/20.
Dependencies are inferred from the claim text.