All About Heaters
The major difference between vacuum formers used for
skin packaging and blister forming is the heater performance. The 3 most commonly
used heaters are Radiant Panel, Quartz Tube and "Calrod" Tubular.
The end user should be aware of the role that the
heater plays in cycle times, part quality and energy efficiency. Machines should be
judged on the merits of not only the purchase price but also operating cost, energy
efficiency, cycle times and durability.
A recent article in Plastic Technology
quoted several expert on the merits of the different heaters. Following is the
summary of their conclusions.
While lower in cost than the others, they are also lower in efficiency. Tubular
heaters are generally mounted in front of reflectors to redirect the infrared. But,
the reflectors and the elements begin to deteriorate immediately losing energy
output. This creates uneven heating and results in hot and cold spots on the
Efficiency - new - 42-50%. After 6 months
The Quartz elements biggest asset is its relatively quick heat up time. However,
these elements used in skin pack applications have very slow cycle time. Their
biggest drawback is fragility. Replacement cost is high.
Efficiency - new - 75-80%. After 6 months
These element radiate heat across the entire surface providing uniform heat over a broader
area than tubular, quartz or ceramic elements.
Efficiency - new - 80-90%. After 6 months
Only QVAC uses the most efficient radiant panel
That is why QVAC PC series machines are as much as 1300
(one thousand three hundred) percent more energy efficient than the competition..
That is why QVAC PC series machines will save you up
to $175.00 per day compared to the competition.