What is Profile Extrusion?
The Profile Extrusion process, such as drinking straws and medical tubing, are manufactured the same as a regular extrusion process up until the die. Placing a pin or mandrel inside the die extrudes hollow sections and in most cases positive pressure is applied to the internal cavities through the pin.
Tubing with multiple lumens (holes) must be made for specialty applications. For these applications, the tooling is made by placing more than one pin in the center of the die to produce the number of lumens necessary. In most cases, these pins are supplied with air pressure from different sources. This way, the individual lumen sizes can be adjusted by adjusting the pressure of the individual pins.
The guide below outlines several product catagories which utilize the Profile Extrusion process: