Patent ID: 6669614
Filing Date: 2003-12-30
Classification: B65B,Y10T

Abstract:
Apparatus for effecting the closure of an open end of a carton blank which includes a pressure sealing component, for partial partially infolded portions of the end side walls of the blank into at least partial overlying relationship to one another comprising,a cam having a rear face and a camming face, said camming face including a plurality of camming surfaces which vary in geometry, said camming surfaces including at least a convex radiussed camming surface which transitions into a concave radiussed camming surface, said transition occurring along an imaginary line drawn at an angle of 6 degrees from the vertical and wherein each of said radiussed surfaces is tangent to said imaginary line and to each other, means mounting said cam with said rear face thereof disposed adjacent to and facing in the direction of said infolded portions of the end side walls of the carton blank for linear movement relative to the partially infolded portions of the end side walls of the carton blank whereby linear movement of said rear face of said cam results in the application of a sealing pressure applied to said partial infolded portions of the end side walls of the carton blank.