The scavenger in the film is invisible, so the package appearance and function is unchanged.
Cryovac: O2 scavenging film
Said to be the world's first polymer-based oxygen scavenging system, Cryovac® (Duncan, SC) OS1000 film effectively eliminates residual oxygen from packages that are packed under low-oxygen, modified-atmosphere conditions.
Sep 30th, 1998
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