Patent ID: 7438473

Claim:
A flexible bag comprising: a first sidewall; a second sidewall overlaying and joined to the first sidewall to provide an internal volume between the opposing first and second inner surfaces of the respective first and second sidewalls; at least one inner surface having a first textured portion and a second textured portion, wherein each first and second textured portion comprises a plurality of protuberances with recessed passageways therebetween, the aggregate volumetric capacity per unit area of the first recessed passageways of the first textured portion being less than the aggregate volumetric capacity per unit area of the of the second recessed passageways of the second textured portion; a one-way valve element attached to one of the first sidewall and the second sidewall, the valve element communicating with the interior volume, the second textured portion is spaced apart from the valve element and the first textured portion is positioned closer to the valve element than the second textured portion, wherein the one-way valve element is configured to allow air to pass out of the bag but prevents air from entering the bag; and wherein the total number of recessed passageways of the first textured portion is fewer than the total number of recessed passageways of the second textured portion; and during evacuation of the internal volume, evacuating air experiences an increased resistance to flow as it moves through the recessed passageways of the first textured portion thereby causing entrained liquids in the evacuating air to condense or drop out of the air prior to accessing the valve element.