Patent ID: 7012232

Claim:
An apparatus for performing a process defined by embossing, sealing, welding or fusing RF sealable material, the apparatus having a power source for providing a predetermined power load at a predetermined frequency, the apparatus having power components that operate below a maximum predefined power load, the apparatus comprising: an automatic impedance tuning device for substantially continuously modifying the apparatus impedance throughout the process whereby said predetermined frequency of power delivery remains substantially unchanged during the process and said power load remains within a range that prevents damage to said power sensitive components; and wherein said power components includes coaxial cable in electrical communication between said power source and said material, wherein said cable dissipates a predetermined maximum load; the apparatus having at least one conductive platen in electrical communication between said coaxial cable and said material wherein the tuning device modifies the system impedance to account for electrical characteristics of said platen; and the apparatus having at least one conductive die between said platen and said material wherein the tuning device modifies the system impedance to account for electrical characteristics of said die.