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The product which is formed by method and this method of reducing the wall thickness of the PTFE tube

机译:通过减小PTFE管壁厚的方法和该方法形成的产品

摘要

A thin wall PTFE tube is formed from an extruded green tube. The PTFE tube includes an inner tubular surface and an opposed outer tubular surface defining a tubular wall of a first thickness. The tubular wall is compressed to uniformly reduce the wall-thickness and circumferentially orient the tube. The PTFE tube is positioned over a first elongate roller with the inner tubular surface being in contact therewith. A second roller is positioned against the outer tubular surface of the PTFE tube. The pair of rollers are counter rotated so as to circumferentially compress the tubular wall between the rollers. This results in the uniform reduction in the tubular wall from the first thickness to a lesser second thickness and a circumferential orientation otherwise not occurring in an extruded PTFE paste extrusion.
机译:薄壁PTFE管由挤压的生坯管形成。 PTFE管包括内部管状表面和相对的外部管状表面,其限定了第一厚度的管状壁。管状壁被压缩以均匀地减小壁厚并使管沿周向定向。 PTFE管定位在第一细长辊上方,内部管状表面与其接触。第二辊抵靠PTFE管的外部管状表面定位。一对辊反向旋转,以在圆周上压缩辊之间的管状壁。这导致管状壁从第一厚度均匀减小到较小的第二厚度,并且圆周方向减小,否则在挤出的PTFE糊料挤出中不会发生。

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