An alternate approach to metal-based oxygen-scavenging films is to use unique polymers to absorb headspace oxygen in packages. Polymers already have the capacity to react with oxygen (Thomas, 1998). However, by creating specific polymers to react with oxygen, the headspace oxygen will be reduced without the use of additives.
Specifically, Cryovac has developed its OS1000, which is a clear lidstock with a proprietary oxygen-scavenging layer coextruded in the film. This layer consists of an oxidizable polymer, a photoinitiator and a catalyst. The oxidizable polymer will react and bind with the oxygen. The photoinitiator will absorb the UV light and provides the energy to initiate the reaction (Thomas, 1998). The catalyst will reduce the activation energy for the overall reaction to occur.
An alternate approach to metal-based oxygen-scavenging films is to use unique polymers to absorb headspace oxygen in packages. Polymers already have the capacity to react with oxygen (Thomas, 1998). However, by creating specific polymers to react with oxygen, the headspace oxygen will be reduced without the use of additives.Specifically, Cryovac has developed its OS1000, which is a clear lidstock with a proprietary oxygen-scavenging layer coextruded in the film. This layer consists of an oxidizable polymer, a photoinitiator and a catalyst. The oxidizable polymer will react and bind with the oxygen. The photoinitiator will absorb the UV light and provides the energy to initiate the reaction (Thomas, 1998). The catalyst will reduce the activation energy for the overall reaction to occur.
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