Typically, pelletizers are controlled by the compounding extruder, and start-up-especially timing the arrival of cooling water and hot melt at the die holes-requires very skilled operators.

Typically, pelletizers are controlled by the compounding extruder, and start-up-especially timing the arrival of cooling water and hot melt at the die holes-requires very skilled operators. CDL Technology Inc., Addison, Ill., aims to simplify this with nine patent-pending technologies. They involve water-temperature control, sensors in the die and die surface, and new computer controls that will match the water temperature to the melt temperature and sequence start-up automatically. CDL says the new controls will make it "impossible" to freeze off the die and will also prevent problems like spraying water because of improper clamping of the pelletizer to the extruder. The software tells the operator, "Chamber clamps not properly engaged" and blocks start-up.

C.D.L. Technology
511 Vista Ave. Addison, IL 60101
Phone (630) 543-5240 Fax (630) 543-4656