Sterile Liquid Filler, Monoblocks, Vial Stoppering, Capping, Tray Loaders, Used Packaging Machinery & More.

NEWS & EVENTS
ChaseWeigh™

CHASEWEIGH™ SYSTEM DRAWS ATTENTION

Driven by customer needs, Chase-Logeman has
developed a system to perform 100% continuous check
weighing with direct feedback to electronically controlled
filling pumps. This offers the customer precise fill
accuracy with data acquisition on every processed
container passing through the system, at rates up to 40
bottles per minute.

Since, press releases regarding this innovation have
been printed in several industry journals. The response
has been excellent. One customer inquiry has led us to
the next generation of this system.

The latest and most innovative technology at Chase-
Logeman is the NEW ChaseWeigh™. Utilizing two
precision Mettler balances, the machine is designed to
sample checkweigh before (tare) and after (gross) filling.
After the gross weigh, the vial or bottle is transferred to a
second starwheel for closing which could include
stoppering, plugging and screw capping.

Upon start up, the system performs a 100% checkweigh
with rapid corrections to the last filling head to
compensate for initial set up errors. After a specified
number of consecutive vials are within control limits, the
checkweigh system automatically transitions to a
statistical sampling protocol.

Example: checkweighing takes approximately three
seconds per vial so the initial start up rate is 15 - 18 vials
per minute(vpm). Within one minute the sample rate is
automatically reduced to 10% and the through-put
increased to 78 vpm. Within five minutes the sample rate
is reduced to 2% with through-put increasing to 108 vpm.
Sample rate can be reduced to 1% for 114vpm. The
customer can adjust the frequency of the sample rate as
needed to meet his requirements.

Because indexing rate changes with the sampling rate, it
is important to keep the filling rate constant to maintain
consistent fill accuracy. Therefore, rather than using our
traditional mechanical pump drives that change with the
indexing rate, we are introducing a single servo drive for
the first series of filling pumps. This drive will allow the fill
rate to remain constant no matter what the indexing rate.

A second servo drive for the last filling pump gets
feedback from the Mettler system to maintain tight
accuracy control and also provides "on-the-fly" filling
adjustment in the automatic or manual modes.