| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method and an apparatus for multi-layer extrusion molding wherein flow speed of each molten resin layer is made uniform and a multi-layer sheet/film with no fluctuation of the thickness in the width direction can be easily molded by controlling temp./viscosity of a molten resin material, i.e., controlling as the result resistance on the metal wall face of a feed block by controlling temp./viscosity of the molten resin material. SOLUTION: In a method for multi-layer extrusion molding for molding a multi-layer sheet/film by combining a feed block 10 for laminating molten resin materials fed from a plurality of extruders in multi-layers and making them join together and a T-die connected with the feed block and for molding the multi-layer sheet/film, temp./viscosity of each of fed molten resin material is controlled by performing temp. control of heaters 20a-20f and 22a-22f provided in the feed block 10 to decrease inferior phenomena on the boundary faces of lamination joining together in multi-layers.</p> |
