Patent ID: 7874428

Claim:
An air-packing device comprising: first and second thermoplastic films superposed with each other where predetermined portions of the first and second thermoplastic films are bonded, thereby creating a plurality of air containers; the plurality of air containers including a plurality of heat-seal lands bonding the first and second thermoplastic films; wherein the heat-seal lands divide the air containers into a plurality of air cells in a manner that allows air flow between the air cells; a plurality of check valves established between the first and second thermoplastic films for allowing the air to flow into the air containers during inflation; an air input commonly connected to the plurality of check valves to supply the air to the air containers through the check valves; wherein the air-packing device includes a series of air cells which have different length, the series of air cells being defined between two traces of heat-seal lands formed across the plurality of air containers; wherein the air cells at both ends of the air-packing device are outwardly foldable while other air cells are inwardly foldable when packing a product therein so that the air cells at the ends and the air cells adjacent thereto are overlapped, thereby creating a force for securing the product to be protected.