| 摘要 |
<p>A multilayer blow-molded article comprising at least two or more layers, characterized in that the molded article is composed of materials satisfying a condition of To<Ti, in which To ( DEG C) is a DTUL (deflection temperature under load) of a resin constituting an outermost layer and Ti ( DEG C) is a DTUL of a resin which is a principal constitutional component of an inner layer and that an external surface of the molded article satisfies a surface characteristic of a surface roughness of 0.2 mu m or less defined by a center line average roughness (Ra) or a 60 degree specular glossiness of 60 % or more, and a blow-molding method of a multilayer blow-molded article comprising at least two or more layers, wherein blow-molding is carried out with selecting resins and a mold temperature satisfying a condition of To<Tm<Ti, in which To ( DEG C) is a DTUL of a resin constituting an outermost layer, Ti ( DEG C) is a DTUL of a resin which is a principal constitutional component of an inner layer and Tm ( DEG C) is a mold temperature. Provided is a mold article which has surface smoothness and gloss resulted from good transfer of a mold cavity surface without allowing the production cost to rise.</p> |
