AN IMPROVED CLEAN, STIFF, WASHABLE, COMPACT ADSORBENT FILTER ASSEMBLY

摘要

An improved clean, stiff, washable, compact adsorbent filter assembly is provided for selectively adsorbing contaminants from an enclosure. The filter assembly comprises a sorbent core including contaminant adsorbing material therein, a filter layer, and a film layer wherein the sorbent core is encapsulated by the film layer and filter layer. Other layers such as a filter support layer and one or two low melt bonding layers may be added to the film layer. The filter assembly may also comprise an indicator chemical to indicate sorbent saturation. The filter assembly may also function to channel air into a particulate filter to maximize adsorbent effectiveness and recirculation filter effectiveness. The filter assembly is particularly suitable for use in a computer disk drive or similar enclosure susceptible to outgassing contamination. The filter assembly can be mounted by a variety of means including but not limited to a press fitting between "C" channels, fastening in place with screws, or welding into place by means of a thermoplastic or thermoset adhesive.