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发明公开
CN109070423A 在挤出线中用于负压校准单元的密封装置 无效 - 撤回

在挤出线中用于负压校准单元的密封装置
摘要：
本发明涉及密封装置，其在用于制造塑料型材、尤其管的挤出线中用于负压校准单元，其中，密封件以内面形状配合地贴靠在挤出的型材的周缘处并且为了施加密封力径向地支撑到所述型材上。本发明的任务是，提供另外的这种装置，所述装置十分简单地被构建并且能够成本适宜地被制造。所述任务通过如下方式解决，即所述密封件是多孔的且弹性的泡沫体（13），所述泡沫体的暴露于大气的面（17、19）设有空气密封的涂层（21）。
摘要（英）：

The invention relates to a seal device for a negative pressure calibrating unit in an extrusion line for producing profiled plastic sections, in particular pipes. The inner face of a seal rests against the circumference of the extruded profiled section in a formfitting manner, and the seal is radially supported on the profiled section in order to apply a sealing force. The aim of the invention isto provide another similar device which is very easily constructed and can be produced inexpensively. This is achieved in that the seal is a porous and elastic foam body (13), the surfaces (17, 19) ofwhich that are exposed to the atmosphere are coated with an air-tight coating (21).

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