Patent ID: 8323774

Claim:
A preconfigured plastic film for use in air-filled packing cushions, the film comprising a web of material having a leading end and a trailing end, wherein the web of material is adapted for continuous inflation of a series of inflatable chambers positioned along the length of the web as the web is advanced through an inflation machine, the web of material comprising: a longitudinal channel extending near an edge of the material and extending the entire length of the material without interruption, wherein the channel is open at the leading end of the material; a plurality of generally rectangular inflatable chambers each having three sides closed and a fourth side with an unsealed opening into the longitudinally extending channel, and preformed seal line elements within the interior of the chambers to permit the chambers to be folded along a line extending through the seal line elements; and a plurality of laterally extending perforations separating each chamber or a plurality of chambers, wherein the laterally extending perforations extend at least partway across the width of the material.