Paste extrusion

The paste extrusion process starts from a particularly fine PTFE powder, which is extruded at high pressure, after being blended with a specific lubricant, providing fibrillation to the end product.

Thanks to the rubbing of PTFE particles in the die, the molecules agglomerate, resulting in a sort of paste, still soaked in lubricant.

This material is then sintered, volatilizing the lubricant and obtaining a smooth and waxy semi-finished product. Thanks to paste extrusion, we are able to produce six meters long pipes, which present a more compact PTFE wall with respect to other processes.