Filter package
DCFirst Claim
1. A filter package enabling the filter to be stored and shipped in a wet state without the filter drying out, the filter package comprising a sanitized filter cartridge for removal of particulates from a fluid and having a porous filter medium including a plurality of pores through which the fluid can pass between upstream and downstream sides of the filter cartridge during filtration to remove particulates from the fluid, a flexible bag which surrounds the filter cartridge and has walls extending between an upper end and a lower end thereof, the walls comprising a polymeric material impervious to microorganisms and liquid water, and sanitized water hermetically sealed inside the bag and substantially permeating the pores of the filter medium and immersing substantially 100% of a volume of the filter cartridge, the bag being hermetically sealed around the filter cartridge with substantially all air excluded from the bag.
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Abstract
A method of forming a filter package includes disposing a filter and a liquid in a container with the filter immersed in the liquid and sanitizing the liquid and the filter while in the container. After sanitizing, the container may be hermetically sealed to enclose the sanitized liquid and filter. The container may be vented during sanitizing to allow vapor of the liquid to exit from the container and prevent pressure from building up in the container. The container may be either rigid or flexible.
34 Citations
23 Claims
- 1. A filter package enabling the filter to be stored and shipped in a wet state without the filter drying out, the filter package comprising a sanitized filter cartridge for removal of particulates from a fluid and having a porous filter medium including a plurality of pores through which the fluid can pass between upstream and downstream sides of the filter cartridge during filtration to remove particulates from the fluid, a flexible bag which surrounds the filter cartridge and has walls extending between an upper end and a lower end thereof, the walls comprising a polymeric material impervious to microorganisms and liquid water, and sanitized water hermetically sealed inside the bag and substantially permeating the pores of the filter medium and immersing substantially 100% of a volume of the filter cartridge, the bag being hermetically sealed around the filter cartridge with substantially all air excluded from the bag.
- 5. A filter package having a long shelf-life and containing substantially no contaminants, the filter package comprising a sanitized filter cartridge for removal of particulates from a fluid and having a porous filter medium including a plurality of pores through which the fluid can pass between an upstream side and a downstream side of the filter cartridge as particulates are removed from the fluid, a flexible bag hermetically sealed around the filter cartridge and having an inside surface, an outside surface, and walls comprising a material impervious to microorganisms and liquid water, and sanitized water contacting the inside surface of the bag and hermetically sealed inside the bag and substantially permeating the pores of the filter medium so that the filter cartridge will not dry during storage and shipment and immersing substantially 100% of a volume of the filter cartridge, substantially all air being excluded from the bag.
- 13. A filter package comprising a flexible bag having an inside surface, an outside surface, and walls comprising a material impervious to microorganisms and liquid water, a sanitized filter cartridge disposed in the bag and including a filter medium having pores through which a fluid can pass between a upstream side and a downstream side of the filter cartridge to be filtered by the filter medium, and sanitized water hermetically sealed inside the bag and contacting the inside surface of the bag, substantially permeating the pores of the filter medium, and immersing substantially 100% of a volume of the filter cartridge.
Specification