Patent ID: 8911340

Claim:
A method of producing an air packaging device, comprising the steps of: (a) providing at least two layers of films; (b) heat sealing said films to form a semi-finished product having a space defined between said two films for storing air, said space having a plurality of air chambers with a plurality of one-way valves; (c) heat sealing said semi-finished product to further divide at least one of said air chambers, which has two or more one-way valves thereat, into two or more independent and small-diameter air chambers to form a finished products, wherein at least one of said air chambers has a diameter larger than said other air chambers to form a larger air chamber which has at least two said one-way valves which make said larger air chamber easy to fill with air, wherein each of said independent small-diameter air chambers has at least one said one-way valve communicating said independent small-diameter air chamber; wherein the step (c) further comprises a step of folding said semi-finished product and heat sealing along at least a heat sealing line to form a bag having a receiving cavity and an opening, wherein said receiving cavity defines two side air chambers and two middle air chambers between said two side air chambers, wherein two or more of said independent small-diameter air chambers form each of said side air chambers of said receiving cavity, wherein two or more of said independent large-diameter air chambers form each of said middle air chambers between said two side air chambers.