Patent ID: 6588970
Filing Date: 2003-07-08
Classification: B29C,B29L,Y10T

Abstract:
A jointing unit for a bonding seam formed by vibration welding comprising:jointing flanges comprising opposed flange faces, said flange faces including jointing faces to be interfixed in a jointing field by jointing material, activated by vibrating the jointing faces against each other: at least two chambers bounded by said flange faces adjacent to said jointing faces, said at least two chambers situated side-by-side at one side of said jointing faces and including a first chamber proximate to the jointing faces and a second chamber farther from the jointing faces, said first chamber receiving excess jointing material emerging from between said jointing faces; wherein barrier means are included between said at least two chambers for impeding said excess jointing material from passing toward said second chamber such that said second chamber remains substantially empty; and a jointing web including one of said jointing faces, wherein said jointing web is flanked by first and second webs and is at least half to two-thirds as high as each of said first and second webs.