首页>
外国专利>
Method of and apparatus for manufacturing a plastic pipe comprising longitudinally extending hollow channels in its wall
Method of and apparatus for manufacturing a plastic pipe comprising longitudinally extending hollow channels in its wall
展开▼
机译:用于制造塑料管的方法和设备,该塑料管在其壁中包括纵向延伸的中空通道
展开▼
页面导航
摘要
著录项
相似文献
摘要
Method and extruder for manufacturing plastic pipes provided with longitudinal channels in its wall. Before the extrusion nozzle of the extruder, the stream of plastics to be extruded for forming the pipe is subdivided into two concentric annular streams flowing through two annular division channels formed by means of a dividing member being retained by only a breaker in the outer division channel, the other division channel forming a free passage between the channel inlet and the outlet.
展开▼