Patent ID: 7478729

Claim:
A fuel-filtering device to be disposed inside a fuel tank for filtering a fuel, comprising: a filter body having a bag shape and a communication hole, and being formed of a plurality of laminated filter layers, said laminated filter layers including an outside filter layer formed of a woven mesh, an inside filter layer formed of a non-woven fabric, and a plurality of intermediate filter layers disposed between the outside filter layer and the inside filter layer and formed of a melt blown non-woven fabric, said filter body being formed of at least one of a polyethylene fiber and a polypropylene fiber and having mesh sizes decreasing from the outside filter layer toward the inside filter layer, wherein said plurality of intermediate filter layers consists of a first intermediate filter layer arranged adjacent to the outside filter layer and having an area density of 40g/m 2 , a second intermediate filter layer arranged adjacent to the first intermediate filter layer and having an area density of 30 g/m 2 , and a third intermediate filter layer arranged between the second intermediate filter layer and the inside filter layer and having an area density of 40 g/m 2 .