Patent ID: 6712887
Filing Date: 2004-03-30
Classification: B01D,G11B

Abstract:
A gas adsorption filter that is attached within a semi airtight container such that it covers the breather hole for regulating the pressure of said container and which has the function of capturing harmful gases that flow into said container passing through said breather hole,the gas adsorption filter is characterized in that said filter has an opening that is connected with and open to said breather hole and comprises a base material having and attachment surface for attaching the filter to the inner wall of said container and a gas adsorption body that is laminated and fixed to the gas flow path surface on the side opposite to that of said attachment surface of said base material, and on the gas contact surface on the side where said gas adsorption body is in contact with the gas flow path surface of said base material, there is at least one gas inflow orifice that is connected with and open to an opening of said base material, and at least one gas discharge orifice that is connected with and open to the outside of said gas adsorption body, and a groove section is formed that is connected with and open to said gas inflow orifice and said gas discharge orifice, and the groove width of said groove section is 10 mm or less, the grooved proportion of the overall area of said groove section is 10 to 97%, and, in addition, the degree of nonuniform distribution of said groove section is 70% or less.