| 摘要 |
The present invention relates to preparing extruded article by flowing heat plastified stream of extrudable resinous thermoplastic material through an extrusion orifice. In the invention crosslinking additives are introduced and mixed to the surface portion of the stream of extrudable resinous thermoplastic material before the extrusion step. After the extrusion step the crosslinking of the surface portion of the extruded article provided with the crosslinking additives is initiated by special initiation means.
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