Heat-seal band system with heat tunability through an air gap arrangement

A heat-seal band system comprising:

• a band having a workpiece-facing surface that is configured to direct heat toward a workpiece to perform a heat-sealing operation to the workpiece and an opposite tab-facing surface;
• a conductive tab that extends away from the tab-facing surface and is configured to conduct electrical energy from a power source to the band;
• a tab to band junction (tab/band junction) defined at an intersection of the tab and band;
• an air gap arrangement adjacent the tab/band junction that includes:
• a tab cover system including a tab cover that engages at least a portion of the tab;
• and
• an air gap defined as a void space between the tab cover and the tab-facing surface of the band;
• and
• wherein:
• a distance between the tab cover and the tab-facing surface of the band at the air gap influences an energy transmission-related characteristic between the tab and the band at the tab/band junction
• adjusting a dimension of the air gap varies an amount of energy that is transmitted through the tab/band junction to provide a variable energy transition between the tab and band for adjusting an amount of heat.

A heat-seal band comprising:

• a band having a workpiece facing surface that is configured to direct heat toward a workpiece to perform a heat-sealing operation to the workpiece;
• a conductive tab configured to conduct electrical energy from a power source to the band;
• and
• an adjustable tab to band junction (tab/band junction) that configured to be adjustable to provide a variable energy transition between the tab and band for adjusting an amount of heat.