| 摘要 |
PROBLEM TO BE SOLVED: To provide a new method for efficiently extrusion molding a molding having a base having a self-supporting capability and a film formed on the wall surface of the base. SOLUTION: The method for manufacturing the extrusion molding comprises the step of manufacturing the extrusion molding having the base made of a first material 5 and the film made of a second material 6 and formed on the wall surface of the base. The extrusion molding has at least one closed space 8 formed at the base as seen in a section crossed perpendicularly to an extrusion axis A. The wall surface is opposed to the space 8. A mouthpiece comprises a first route 4 for extruding the first material 5, and a second route 3 for extruding the second material 6. The route 3 has inlets 3A, 3B opposed to an upstream side end face of the mouthpiece, an outlet 3D opposed to a downstream side end face of the mouthpiece and extended in alignment with the route 4, and connectors 15C, 15D connecting the inlets to the outlet and extended in a direction crossed perpendicularly to the direction of the axis A.
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