Evaporative emissions filter

A method of making an adsorptive member for adsorbing a desired gaseous adsorbate, the method comprising:

• thermoforming a first polymeric material to form at least one well therein;
• fastening a second polymeric material to the first polymeric material, thereby forming at least one partially enclosed chamber from the at least one well;
• filling the at least one chamber with a predetermined amount of adsorptive media one of before or after fastening the second polymeric material to the first polymeric material, wherein the at least one chamber has the adsorptive media therein;
• and
• forming a plurality of throughbores in the member, the throughbores extending from an outer surface of the first material to an outer surface of the second material, the throughbores adapted to receive attachment members for mounting the member to a desired surface;
• wherein each of the first and second polymeric materials includes pores that are permeable to the desired adsorbate, and wherein each of the first and second polymeric materials pores are substantially impermeable to the adsorptive media.

A method for making a hydrocarbon adsorber, comprising:

• disposing a first permeable layer over a die;
• thermoforming the first permeable layer in a configuration having a plurality of receiving areas;
• welding a portion of a flat second permeable layer to the first permeable layer, wherein the plurality of receiving areas are disposed therebetween and the plurality of area are accessible from a periphery of the first permeable layer;
• filing the plurality of receiving areas with a hydrocarbon adsorbing material;
• and
• sealing the periphery of the first permeable layer after the hydrocarbon material has been disposed in the plurality of receiving areas.