Patent ID: 6893387

Claim:
A method of making a mailing envelope assembly composed of an inner envelope and an insert portion contained in an outer envelope comprising: conveying a web of material; longitudinally folding said web to define a longitudinal web region from which the inner envelope is formed; applying adhesive material transversely to a surface of said web at spaced transverse intervals in a location for the inner envelope portion; longitudinally folding said web so that said adhesive material attaches the web at the spaced intervals to form the inner envelope portion; applying adhesive material longitudinally on the surface of said web for an inner envelope flap adhesion; longitudinally folding the web to form the inner envelope flap adjacent the flap adhesion; longitudinally folding the web in a web region not occupied by the inner envelope to form the insert portion; longitudinally folding said web to form an outer envelope panel; applying adhesive longitudinally on a region of the web that will form the outer envelope flap; longitudinally folding said outer envelope web region to form the outer envelope and outer envelope flap in a web region not occupied by the inner envelope and the insert portion, which outer envelope encloses an inner portion and an outer portion of the inner envelope and an inner portion and an outer portion of the insert portion; and periodically transversely cutting the web to form the individual mailing envelope assemblies.