Improved pipe and method of production

摘要

The present invention relates to a pipe formed in a single extrusion process from polyaryletherketone (PAEK) family, such as polyetheretherketone (PEEK). Said pipes require (i) phenylene moieties, (ii) ether and/or thioether moieties, and may optionally include (iii) ketone or sulfone moieties. Such pipes are manufactured by passing a pipe through a calibrating device, said device having two or more cooling zones, the first cooling zone having cooling fluid at 60° or less, the second cooling zone having cooling fluid at 80-150°C, and wherein vacuum sizing is applied to the pipe as it passes through the calibration device.