Patent ID: 7854243

Claim:
An inflatable pneumatic bag, comprising: two outer layers, one overlying the other; at least two inner layers between said outer layers; a pneumatic passage formed by heat sealing said outer layers, which includes a pneumatic hole for applying air; at least one projection portion, positioned in said pneumatic passage to connect said two outer layers to said inner layer; a plurality of air tubes formed by heat sealing said outer layers for filling air therein; and a plurality of air ingress holes between said pneumatic passage and said air tubes, said air ingress holes being formed in regions separately arranged along one plane of said inner layers coated with heat-resistant materials thereon, wherein air entering said air ingress hole expands said pneumatic passage, allowing two sheets of said outer layer to be pulled apart outward to open said air ingress hole; said inner film is compressed to cover said air ingress hole to seal said air tube after said air enters said air tube.