US Patent 9643754 Envelopes with hanging features

An envelope includes an envelope body having a first pair of substantially parallel edges that extend in a transverse direction and a second pair of substantially parallel edges that extend in a longitudinal direction, a face and a back. An openable region is formed in the envelope body and is spaced from the first and second pairs of parallel edges that is partially bounded by a line of weakness. The openable region being partially separable from the envelope body to provide a hanging feature. A barrier film is exposed after separation of the openable region from the envelope body. The barrier film is at least partially sealed to the envelope body about at least a portion of the openable region.