What does BAR stand for?

Barrel

The section of a molding machine that contains the feed screw, also the section where resin heating and mixing occurs. OR Cylinder that contains the screw and the heaters. Built to withstand pressure of 7,500-20,000 psi. OR Section of the extrusion machine that contains the plastic extrusion feed screw, which can be single or twin screw. This is also the section where resin heating and mixing occurs.