| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a multi-layer molded article by the rotation-molding method, for which a polyethylene based resin layer and a polypropylene based resin layer are laminated, and which is superior in inter-laminar bonding strength, and to provide its manufacturing method. <P>SOLUTION: This multi-layer molded article is equipped with the polyethylene based resin layer, the polypropylene based resin layer, and a mixed resin layer. In this case, the polyethylene based resin layer is formed of a polyethylene based resin. The polypropylene based resin layer is formed of a polypropylene based resin. The mixed resin layer is arranged to be in contact with the polyethylene based resin layer and the polypropylene based resin layer between them, and is formed of a mixture of a polyethylene based resin, and a polypropylene based resin of which the melting point is higher than that of the polyethylene based resin. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
