Method of making filter cartridge having roll-based housing sidewall
Assignee3M Innovative Properties Company
InventorsBritton G. Billingsley, Pierre Legare
Life of this patent
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Abstract
A method of making a filter cartridge, which method includes: (a) providing first and second filter media layers that each contain active particulate that is bonded together and that each comprise a perimeter; (b) stacking the filter media layers in a spaced apart relationship; and (c) securing a roll based housing sidewall to at least a portion of the perimeter of each filter media layer. The resulting filter cartridge is light in weight but has increased volume that provides an improved service life. The cartridge has a very good service life to weight ratio.
Claims21
A method of making a filter cartridge, which method comprises:
- (a) providing first and second filter media layers that each contain active particulate that is bonded together and that each comprise a perimeter;
- (b) stacking the filter media layers in a spaced apart relationship with a plenum disposed therebetween;
- and then
- (c) securing a roll based housing sidewall to at least a portion of the perimeter of the stacked, spaced-apart filter media layers, the roll based housing sidewall being secured to the at least a portion of the perimeter using an adhesive.
Dependencies are inferred from the claim text.