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General Principles
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What if you are not getting a desirable seal? Induction sealing is affected by these variables: air gap, line speed, power output and cap application torque. The table below details common sealing problems and tips to solve them...
In order to get a good hermetic seal, it's necessary for the foil innerseal (inside of the cap) to be in contact with the lip of the container and have consistent pressure around the circumference. This is accomplished by applying correct application torque to the cap. When the application torque is inconsistent, the result is inconsistent seals. Causes of inconsistent seals are...
All units have some variation of the basic controls - status indicators, power output display, and 4-start/stop and up/down keys shown above. The locations and additional functions vary by model...
Sealing head positioning is critical to successful sealing. The power of the heating field reduces with the square of the distance, meaning that if you double the distance between the seal and the head you only have 1/4 the heating power...
Follow these simple steps to find the optimal power level of your induction sealer for your application...
These steps should be followed in the order listed to insure proper operation of your unit...
How do I know if I have a proper seal? Due to the wide variety of sealing materials available, particular adhesion properties will have to be determined by the customer. Generally, proper sealing can usually be determined by the following questions...
Induction sealing is a non-contact heating process that accomplishes the hermetic sealing of a container with a closure that includes a heat-sealable foil laminate. The typical induction innerseal begins as a multi-laminate liner inside a closure made up of the following layers...
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