Patent ID: 6427908
Filing Date: 2002-08-06
Classification: B65D,C09D,C09J

Abstract:
A boxed end container having one end formed by in folding the terminal portions of two opposed side walls of the container to form a gabled end having gable end triangular walls and a transverse ridge structure at the upper end of the container and thus close the upper end of the container, the ridge structure being retained in the closed position by bonding together contacting surfaces of the wall material in the ridge structure to form a transverse ridge seal closure to the container, the container carrying a pull tab whereby a separating force can be applied to the ridge seal of the container so as to separate at least part of the bonding of the ridge seal and thus open the container to allow discharge of its contents, characterized in that:the pull tab comprises a shank member extending longitudinally between a proximal end portion adapted to be gripped and pulled by a user and a distal end portion, said shank member having two longitudinally extending edges thereto; said distal end portion of said shank member having foot members, at least one extending transversely to each side of the shank member, which are secured substantially symmetrically with respect to the longitudinal axis of said shank member externally to a wall of the container at or adjacent to the ridge structure of the container, said foot members having a proximal edge which extends from said longitudinal edge of said shank member, the shank member and the foot members in their free state when not secured to the container being substantially co-planar with one another; the shank member has a point of rotation about which the shank member flexes with respect to the foot members when tension is applied to the proximal end of the shank member during opening of the container, said point of rotation being located longitudinally with respect to the shank member substantially in register with the junction of the longitudinal edges of the shank member and the proximal edges of the foot members; the securement of each of the foot members to the container wall is by means of a securement means which presents a securement edge proximal to the point of rotation, said securement edge being configured so that at least a portion thereof extends normal to a line extending from said securement edge to said point of rotation, said line intersecting said securement edge intermediate the ends hereof.