Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
November 15, 2011
Patent Application Number
12198650
Date Filed
August 26, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
Disclosed is a multilayer structure comprising a layer of humidity-dependent composition having a ratio of wet cup permeance to dry cup permeance greater than 10 and a layer of crystallizable polymer sufficiently permeable to oxygen, carbon dioxide and water vapor, exhibiting an increase in permeability to at least one of oxygen and carbon dioxide by a factor of at least 2.5 over a temperature range of 10° C. between 0° C. and 40° C. Also disclosed are packaging materials comprising the multilayer structure and methods for storing respiring materials using the packaging materials.
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