The above thermoplastic resins include 1,2-polybutadiene resin, polyolefin resins such as polyethylene, polystyrene resins, polyacrylic resins such as (meth)acrylate-based resins, vinyl ester resins (excluding acrylic resins), polyester resins, polyamide resins, fluororesins such as polyvinylidene fluoride, polycarbonate resins and polyacetal resins.