Patent ID: 6761960
Filing Date: 2004-07-13
Classification: B31D,B32B,B65D,Y10T

Abstract:
A cellular cushioning material comprising two superposed sheets of film material joined together along a plurality of generally parallel, undulating seal lines arranged in a pattern such that adjacent ones of the seal lines are offset laterally of each other and form rows of spaced apart bubble chambers with flow passageways interconnecting adjacent ones of the bubble chambers in each row so that air can shift between the chambers in a row to accommodate loads, the flow passageways in alternate rows being positioned between, aligned with, and formed by the same seal lines as the bubble chambers in the intermediate rows so there is no dead space between the bubble chambers and the flow passageways in adjacent rows, a longitudinally extending inflation channel, and laterally extending inlet ports interconnecting the inflation channel and one of the bubble chambers in each of the rows.