Successfully Sealed
Sealing bars in packaging machines are high performance mechanisms that often
require precisely located heat. Dalton Electric Heating Co. has successfully
addressed a myriad of package sealing applications over the years, due to a
number of benefits of our Watt-Flex® cartridge heaters.
Conventional heaters are manufactured with a varying number of resistance
cores, depending on the length of the heater. They are wired in parallel and
can burn out independently, causing a cold spot on the sealing bar and
rendering the bar incapable of a consistent seal. The Watt-Flex heater has
one continuous coil, no matter what the length. This will ensure an even
temperature profile across the sealing surface.
Packaging machines generally utilize smaller diameter heaters that extend
some considerable length through the sealing bar. Over time a conventional
heater will seize up in the bar due to warping, uneven heating and contamination.
The small diameter heater is very difficult to remove without damaging the bar
and, if drilling out is required, the likelihood of ruining the bore is high. The
Watt-Flex cartridge is warranted to be removable and will not cause damage
to the bore.
Excel Automation is an authorized Dalton distributor. Please contact us for sales & technical assistance.