Purge Compound with Dual-Action Cleaning
Dyna-Purge F2 features proprietary agents formulated to flow naturally through a variety of processing equipment.
Shuman Plastics is launching the new Dyna-Purge F2, described as a “breakthrough technology” with proprietary agents formulated to flow naturally through a variety of processing equipment, including injection molding machines and extrusion lines. The low-residue purging agent features one component formulated to flow to the boundary layer, flushing out the resin. Another component acts as a pressurizing agent, allowing the purge to reach stagnation points.
This dual-action cleaning removes material and impurities from the screw and barrel, as well as tool and die. With a temperature range of 320 to 625 F, it is reportedly effective at purging virtually all resins with reliable results. This safe, non-hazardous and FDA-compliant compound is said to be ideal for purging hot runners and other channels with tight clearances.
Maintenance departments often clean screws wrongly, causing serious and expensive damage.
For blow molders of HDPE parts, this is an all-too familiar sight at start-up time on Monday morning: The machine is purging leftover material onto the floor.
There are many techniques known to operators and plant engineers for increasing the performance of a twin-screw compounding extruder.