To obtain a heat sealing lacquer composition containing a chlorine atom-free resin as a component, having performance equivalent to that of a composition using a vinyl chloride-vinyl acetate copolymer, and which composition can become an alternative thereto.

This heat sealing lacquer composition comprises a styrene-based block copolymer such as an organic acid group-bearing SEBS, a vinyl polymer such as an acrylic polymer or a polystyrene and/or a filler such as talc.