a material for active antioxidant packaging , flexible or rigid , is described , preferably for foods or products vulnerable to any type of oxidation , the material consists of a system promoting migration of an active component to the packaged product during its storage or marketing ; it replaces the direct addition of antioxidants to the packaged product and lengthens its shelf life . this material is formed by ≧ 89 % of base polymer , 3 . 5 to 10 % by weight of tocopherol antioxidant , and 0 . 1 to 1 . 0 % by weight of any surface modifier having a hydrophobic portion and a hydrophilic portion in its molecule , whose use as additive in contact with foods is approved by fda .