Illinois Tool Works Inc.

Phillip S Massey

Walter Gene Berrier

John Leslie Harrington

An inflatable dunnage air bag comprises a multi-layered paper bag and an inflatable bladder disposed within the multi-layered paper bag such that two sets of paper plies are disposed upon opposite sides of the inflatable bladder. The multi-layered paper bag has at least one flap member extending outwardly from one set of paper plies and is adapted to extend from a first side of the inflatable bladder and be folded over and secured upon the other set of paper plies so as to be secured at a location disposed upon the other or second side of the inflatable bladder. An inflation valve is fixedly secured to the first side of the inflatable bladder so as to facilitate inflation thereof, the inflation valve thereby being disposed remote from the location at which at least one flap member is secured so as not to present additional weakening forces or stresses within the already high-stress flap securing region. Enhanced burst strength values are achieved with the inflatable dunnage air bag having such aforenoted interrelated structure.

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Mt. Pleasant, TN, United States of America

Phillip S Massey