| 摘要 |
PURPOSE: To provide an improved extrusion molding method of a thermoplastic resin wherein a confluent boundary of melting resins from two melt extruders does not appear on a surface of a sheet. CONSTITUTION: In molding a thermoplastic resin into a sheet by extrusion molding through melt extruders, conduits and a mold, a confluent conduit in which a pipe passage 4 parallel with a passage 2 of a parallel conduit 1 and extending from a cross conduit 3 intersecting the parallel conduit 1 is arranged nearly at the central part of the passage 2 and two melt extruders are used. The melt extruders are respectively connected to the supply side of the parallel conduit and the supply side of the cross conduit. A thermoplastic material is supplied to each melt extruder so as to extrude the thermoplastic resin into a sheet. |
