Manifold envelope assembly

Claim 1

A manifolding assembly, comprising a plurality of envelopes series-connected and separable along transverse lines of weakening provided thereon, each envelope comprising front and back panels with insert material within each envelope, means securing said panels together to form an envelope pocket for said insert material, means for opening the envelope pocket, said insert material including at least one insert sheet connected at one marginal edge thereof to said panels, a first elongated, closed slot provided in said sheet thereby defining said one marginal edge, second slots spaced slightly inwardly of and closely adjacent said first slot, said second slots each slightly overlapping the opposite ends of said first slot and each opening into marginal edges of said sheet lying adjacent said one marginal edge, said second slots curving inwardly toward said first slot from said marginal edges and terminating closely adjacent said first slot, whereby the spacings between each said second slot and said first slot define connecting ties gradually decreasing in width from the ends of said first slot toward the closed ends of said second slots, said ties lying parallel to the direction of envelope extraction through said opening means, whereby said ties are capable of flexing before being gradually broken at said closed ends of said second slots during envelope extraction to free said insert sheet from said envelope, said second slots defining rounded corners at said one marginal edge of said sheet upon extraction thereof.