Patent ID: 7416584
Filing Date: 2008-08-26
Classification: B01D,F02M,Y10S

Abstract:
1. A fuel vapor adsorption filter, comprising: a fuel vapor adsorption agent; and a filter body containing the fuel vapor adsorption agent therein; and a frame formed to surround the filter body, wherein the fame is arranged and constructed to be mounted within an intake air channel connected to an engine, so that the filter body is operable to adsorb a fuel vapor within the intake air channel when the engine has been stopped, wherein the filter body is formed by at least one first non-woven fabric; and wherein the first non-woven fabric has a peripheral edge portion; and wherein the frame is formed by heat-pressing the peripheral edge portion of the first non-woven fabric; wherein the filter body comprises a holding layer for holding the fuel vapor adsorption agent and at least one cover layer for covering the holding layer; and wherein the cover layer is formed by the first non-woven fabric; and wherein the holding layer is formed by a second non-woven fabric; and wherein the peripheral edge portion of the first non-woven fabric of the cover layer extends outward of the second non-woven fabric forming the holding layer; and wherein the holding layer and the at least one cover layer are at least partially bonded or joined to each other by a bonding or joining means; and wherein the first non-woven fabric forming the cover layer comprises fibers made of a first resin; and wherein the second non-woven fabric forming the holding layer comprises fibers made of a second resin; and wherein the first resin has a higher melting point than a melting point of the second resin.