Patent attributes
A rotary impulse sealer includes a roller having a roller body and a plurality of seal bars extending radially outwardly from the roller and spaced apart around the roller body. At least one of the seal bars has a body and a selectively heatable heating element extending along at least a part of a length of the seal bar body. The roller is rotatable through a pre-heating pressure application region in which the at least one seal bar is adapted to apply pressure to a bond area of the bondable material, followed by a heating region in which the at least one seal bar is adapted to heat the bond area, wherein the at least one seal bar and tensioned belt are configured to sandwich the bondable material directly between the at least one seal bar and tensioned belt during the pre-heating pressure application region and the heating region.
