Patent ID: 8001718

Claim:
A recipient for containing a substrate, said recipient comprising a flexible polymer wall having an outer surface and an inner surface for contacting the substrate, at least one gas exchanging membrane, said gas exchanging membrane being coupled to said outer surface of said flexible polymer wall by a hermetical seal along a sealing line, said sealing line defining a hermetically sealed area of said flexible polymer wall, said wall comprising at least one aperture being provided in said hermetically sealed area of said flexible polymer wall, wherein said recipient further comprises a means for creating an air chamber circumscribed by said hermetically sealed area, said hermetical seal and said gas exchanging membrane, for preventing the substrate to contact said gas exchange membrane when said recipient is filled with the substrate thereby bringing the substrate into contact with said hermetically sealed area of said flexible polymer wall at an inner surface of said flexible polymer wall; and wherein said air chamber is created at least in part upon filling said recipient with substrate.