At PACK EXPO 2006 Booth S-400, Pneumatic Scale Corporation will show why the SC Servo Capper is ideal for pharma, personal care, cosmetic and other quality-intensive applications. Consistency, tighter torque control and the feedback systems to monitor performance are inherent benefits of well-executed servo technology.

Pneumatic Scale was the first company in the U.S. to develop a rotary servo capper, using ELAU’s purpose-built PacDrive SCL technology, it is a self-contained servo module that eliminates the need for separate power amplifiers and electrical cabinets on the rotating turret.

With capping torque accuracy to +/- 1 in-lb. across a range from 5 to 100 in-lbs., the servo-driven cappers deliver lower standard deviations and improved Cpk values. Chucks are stationary when picking caps, and the servos automatically accelerate to starting speed, decelerate to capping speed, deliver the required capping torque for the required interval, then decelerate to a stop.

Should the measured capping torque be incorrect for any cap, that container is detected and rejected, whether the cap is improperly sealed, cross-threaded or missing. Real-time in-process monitoring allows 100% verification of the application torque plus statistical data for production management.

There are also fewer rejects and less rework, because slipping or cross-threading can be detected while corrective action can still be taken. The servo design makes for an inherently cleaner cGMP design as well. The designs are wash-down rated and all mechanical functions are controlled from the base, with the main machine cam below the deck plate.

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