Patent ID: 7534039

Claim:
A vacuum packaging bag for holding food or other product, said vacuum packaging bag comprising: a first sheet formed of a multi-layer plastic film, said multi-layer plastic film including: a patterned inner layer having a plurality of cavernous structures, said cavernous structures arranged in a first pattern to form channels suitable for evacuation of gas; and an outer layer coupled with said patterned inner layer, said outer layer having a substantially flat outer surface; a second sheet having a footprint similar to said first sheet; and said first and second sheets arranged with said patterned inner layer inside and facing said second sheet, said first and second sheets scaled on opposing lateral sides and at an end side, whereby said first and second sheets form said vacuum packaging bag having an opening for insertion of food or other product; and wherein said cavernous structures are each essentially a four walled rectangular structure forming a rectangular cavity, said four walled rectangular structure having at least one channel from an outside of the walled rectangular structure into said rectangular cavity.