Longitudinal Extrusion Heads

Longitudinal extrusion heads play the role of orienting the flow through the head in-line and at the start of an extrusion line. They are either used to create a final tube or pipe construction, or form the inner core for further layer processing downstream.

For example, a multilayer composite pipe line begins with a two-layer extrusion group that includes a longitudinal head to form the initial core. The newly formed pipe is fed downstream through the aluminum forming & welding section and into the second extrusion group. The second extrusion head is a crosshead, where an incoming pipe must enter the head to receive the final outer two layers. In other words, only an extrusion flow can enter a longitudinal head, whereas a crosshead accepts both incoming core as well as a transversal extrusion flow.