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Koozies are used to insulate a chilled beverage from warming by warm air, sunlight, and body heat. Using a koozie can reduce the rate a drink warms in the sun by up to 50%. [7] These items can also be used for easily identifying one's beverage from another person's and for marketing or for minimizing the condensation on the can.
Canisters are commonly filled with silica gel and other molecular sieves as desiccants in drug containers to keep contents dry Silica gel in a sachet or porous packet. A desiccant is a hygroscopic substance that is used to induce or sustain a state of dryness (desiccation) in its vicinity; it is the opposite of a humectant.
Packets of dry snack foods, such as this packet of Wotsits, commonly use nitrogen as a packaging gas to keep the contents from going stale or damp prior to being opened.. A packaging gas is used to pack sensitive materials such as food into a modified atmosphere environment.
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Water vapor transmission rate measurement setup, consisting in a stainless-steel cups filled with water or a dessicant. Concurrently to the oxygen barrier property, the permeability of water vapor through a food packaging system should be minimized to effectively prevent physical and chemical changes connected to an excessive moisture content. [52]
The components of an oxygen absorber vary according to intended use, the water activity of the product being preserved, and other factors. Often the oxygen absorber or scavenger is enclosed in a porous sachet or packet but it can also be part of packaging films and structures. [4] Others are part of a polymer structure. [5]
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