Premature activity
Some active component are unaffected by the presence of air in the distribution environment.
Such components include ethylene absorbers, odor absorbers and the like.
However, when the air contacts a packaging material containing a compound reactive with oxygen or water vapor, there is the opportunity for premature commencement of activity, resulting in a lower effectiveness when the package is used.
For this reason, the concept of activation (or triggering) has been the subject of much patenting.
Oxygen-scavenging plastics are now commonly triggered by exposure to ultraviolet light.
Active systems consisting of sachets containing desiccants or reduced iron power are normally kept free from air in barrier laminate pouches, as they become active when exposed to the relevant air components.
Premature activitySome active component are unaffected by the presence of air in the distribution environment. Such components include ethylene absorbers, odor absorbers and the like. However, when the air contacts a packaging material containing a compound reactive with oxygen or water vapor, there is the opportunity for premature commencement of activity, resulting in a lower effectiveness when the package is used. For this reason, the concept of activation (or triggering) has been the subject of much patenting. Oxygen-scavenging plastics are now commonly triggered by exposure to ultraviolet light. Active systems consisting of sachets containing desiccants or reduced iron power are normally kept free from air in barrier laminate pouches, as they become active when exposed to the relevant air components.
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