Patent ID: 6743270
Filing Date: 2004-06-01
Classification: B01D,F02M,Y10S

Abstract:
A manufacturing method of a filter having a filter portion with a plurality of bag-like members, each bag-like member having a container shape and each bag-like member having an opening that is disposed a predetermined distance away from another opening, and a supporting member which supports a periphery of the opening of the bag-like members and connects each of the bag-like members, comprising:preparing a forming die provided with a forming surface which is formed in a shape corresponding to that of one side of the filter; and laminating fibers over the forming surface of the forming die, wherein the forming die is a permeable meshed die, the fibers are semi-molten when laminated over the forming surface of the die, the container shape includes at least one of a conical shape, polyangular conical shape, semispherical shape and a conical trapezoid shape.