| 摘要 |
An extrusion die for extruding hollow profiles is suggested having a die head ( 2 ), which is connected to a runner part ( 1 ) and forms extrusion channels ( 3 ) for shaping a profiled strand ( 4 ), and having a runner chamber ( 5 ), which is provided between the die head ( 2 ) and the runner part ( 1 ) and runs transversely to the extrusion channels ( 3 ), which is connected around its circumference ( 8 ) to an annular channel ( 7 ) for impingement with plastic melt and from which the extrusion channels ( 3 ) of the die head ( 2 ) originate. In order to provide advantageous construction conditions, it is suggested that the runner part ( 1 ) have an inner channel ( 9 ) discharging into the runner chamber ( 5 ) inside the annular channel ( 7 ) for additional impingement of the runner chamber ( 5 ) with plastic melt.
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