Pressure seal pop-ups

A mailer comprising:

• a first ply having an outer face and an inner face;
• a second ply having first and second faces, said first face in face-to-face engagement with said inner face of said first ply;
• first human readable indicia on said first ply outer face;
• a first pattern of pressure coadhesive holding said first ply inner face to said second ply first face;
• said second ply having first and second panels separated by a fold line;
• second human readable indicia on at least one of said panels of said second ply second face;
• a first pop-up formed in said first panel and a second pop-up formed in said second panel, each pop-up having a base integral with said first and second panels, respectively;
• a second pattern of pressure coadhesive holding portions of said first and second pop-ups together at an area spaced from said bases of each;
• and
• a third pattern of pressure coadhesive releasably holding said first panel second face to said second panel second face.

An intermediate for a mailer, comprising:

• a single quadrate sheet of paper having longitudinal edges, transverse edges perpendicular to said longitudinal edges, a front face, and a back face;
• a first fold line parallel to said longitudinal edges and essentially bisecting said transverse edges;
• a second fold line parallel to said transverse edges and essentially bisecting said longitudinal edges;
• a first pattern of pressure coadhesive on said back face including adjacent at least one of said longitudinal edges and adjacent at least one of said transverse edges;
• at least first and second die cut pop-ups formed on aligned on opposite sides of one of said fold lines, each having a base integral with said sheet;
• a second pattern of pressure coadhesive on at least one of said first and second pop-ups remote from said base thereof;
• human readable indicia on said front face, and on said back face of at least one of said pop-ups;
• and
• a third pattern of pressure coadhesive on said front face adjacent at least one of said longitudinal or transverse edges.

A method of making a pop-up mailer from a quadrate single sheet of paper having a front face and a back face, longitudinal edges and transverse edges, comprising the steps of:

• (a) die cutting at least two pop-ups from the quadrate sheet of paper;
• (b) forming a first fold line separating the two pop-ups from each other;
• (c) applying adhesive to the front face of a portion of at least one of the pop-ups;
• (d) applying adhesive to the front face adjacent at least one longitudinal edge;
• (e) applying adhesive to the back face of the sheet adjacent at least one longitudinal and one transverse edge thereof;
• (f) forming a second fold line perpendicular to the first fold line;
• (g) applying adhesive around the die cuts produced in the practice of step (a) to assist in maintaining the pop-ups within the plane defined by the paper sheet during the practice of subsequent steps;
• (h) folding the sheet about the first and second fold lines;
• and
• (i) sealing the adhesive to produce a mailer.