QUOTE ( @ 2009-06-01, 09:56:40)
How likely would a seal problem be, when you insert the seals by hand?

It is important the foil liner has uniform, downward pressure around the entire land area of the container. Proper installation and positioning of the foil is key, ensuring no particles, residue, etc. contaminate the surfaces. Inserting material by hand may also cause excessive wrinkling of the foil which can create sealing problems.

QUOTE ( @ 2009-06-01)
Under what circumstances is a secondary application torque necessary?

Retorque depends on the removal torque requirements of the packager. Most packagers will retorque child resistant closures to ensure the child resistant feature is not compromised. It is important to place the retorquer as far down line from the sealer as possible to give the innerseal adequate time to set.

QUOTE ( @ 2009-06-01)
What is the Optimal air gap? 70mm and 53mm cap

The optimal air gap is dependent on the manufacturer’s specification for a given sealing head coil. A typical air gap is between 1/8” (3 mm) and 3/8” (10mm) based on your manufacturer’s specifications. Variations in your bottle height may also impact your settings.

QUOTE ( @ 2009-06-01)
What advice or guidelines can you give for intermittent FPM or CPM, can this drastically affect ouput of sealing heads? The more foils under the head, the bigger the power draw – and the less foils under the head = surplus?

For lines that will have speed variations beyond your operating window Enercon offers an option called Variable Sealing Control which automatically adjusts output power based on changes in line speed to ensure consistent sealing. Enercon induction sealers regulate a fixed output current value (at a given output percentage). This design ensures the eddy currents induced in each foil are consistent whether one container or several containers are under the sealing head at a given time (intermittent CPM). If the conveyor speed (FPM) varies, the amount of time the foil liner is under the sealing head is also varying. You need to ensure that the speed variation is within the operating window that you have set-up. Otherwise you may have varying sealing success without the Variable Sealing Control Option.

QUOTE ( @ 2009-06-01)
In setting up min and max energy levels, do you go by a statistical level of good seals (at min level), and statistical level of overheated ones at the max? Or, just when you see ONE good and ONE overheated?

We encourage customers to incorporate specific quality standards, including statistical sampling to check for errors. A statistical method would be ideal to determine the best setting, but you would need at least 30 samples at each level to begin to be statistically significant. Recognizing that the Enercon induction sealer regulates a fixed output current, ensuring consistent power delivered to each foil liner at a given output percentage, checking one bottle at a time is often used as long as all other variables are verified and consistent.