a preformed web and a method of producing dunnage units from the preformed web . the web is an elongate flattened thermoplastic tube having an inflation edge and an opposite edge . the tube includes spaced transverse seals that define sides of pouches . in one embodiment , the web is configured such that a gap forms between each pair of adjacent pouches when the pouches are inflated . in one embodiment , an inflation edge of the web comprises a frangible connection that allows the inflation edge to be broken by an unsharpened object .