Patent ID: 6789371
Filing Date: 2004-09-14
Classification: B29C,B29K,B65B

Abstract:
A seal bar assembly for use in an electrical impulse sealing machine in the food processing industry comprising:a seal bar made of polytetrafluoroethylene having a sealing surface extending longitudinally along a length of the seal bar; a sealing wire positioned on the sealing surface and operably extending along the length of the seal bar; a tension mechanism for tensioning the sealing wire to the sealing surface; a seal bar mating assembly having a mating surface extending longitudinally along a length of the seal bar mating assembly, the mating surface configured to mate with the sealing surface during a sealing operation; and a mechanism configured to move the sealing surface of the seal bar relative to the mating surface of the seal bar mating assembly during a sealing operation, including controlled heating of the sealing wire.