Patent ID: 7832562

Claim:
A supply of preconfigured plastic film for use in air-filled packing cushions, the film comprising a roll of material of indeterminate length having a leading end and a trailing end, the material comprising: a longitudinal channel extending near an edge of the film and extending the entire length of the film without interruption, wherein the channel is open at the leading end of the material and open at the trailing 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 film.