Abstract: A plurality of multi-walled bags of flexible plastic material is formed by taking a longitudinally folded flat web of a first flexible plastic film; at least partially separating the superposed plies of said first flexible plastic film at the edge opposite the fold line and moving the film past a corona discharge electrode between the separated plies of the film to pre-treat at least a part of the inwardly facing surface of each of said two plies; taking a longitudinally folded flat web of a second flexible plastic film; corona discharge-treating the outwardly facing surfaces of the two plies of said second flexible plastic film; passing the pre-treated web of said second flexible plastic film over a diverter guide into the space between the two at least partially separated plies of said first flexible plastic film to bring the fold lines of the first and second flexible plastic film webs substantially into register with the two webs moving synchronously in a single direction; and sealing the composite of the

Abstract: A package and a method of producing a package by forming a pocket in the central portion of a sheet of wrapping material, preferably a thermoplastic film, placing a product within the pocket, folding the flat portions of the film into face-to-face contact and bonding the flat portions together. The package can also be evacuated and hermetically sealed. If the film has been oriented, the pocket may be heat shrunk.