| 摘要 |
A device for preserving a product for beverage preparation comprises a first container (4,4') having a first constant of oxygen permeability (K<SUP>1</SUP>PO<SUB>2</SUB>) wherein said product is sealed, that is housed in a second sealed package (5,5') having a second constant of oxygen permeability (K<SUP>2</SUP>PO<SUB>2</SUB>), the first constant of oxygen permeability (K<SUP>1</SUP>PO<SUB>2</SUB>) being greater than the second constant of oxygen permeability (K<SUP>2</SUP>PO<SUB>2</SUB>), moreover, an oxygen absorbing material (6) is housed in second container (5,5') together with the first container to remove oxygen from the first and second container (4,4'). |
