Sorption behavior of volatile compounds by high gas barrier films was investigated in aqueous solution after storage for 2 months, comparing with that by middle-density polyethylene (MDPE) film. With amorphous nylon, distribution ratios (quantity of a compound recovered from a film/quantity from sample solution) were less than 0.026 and were little affected by functional groups of the volatile compounds. The ratios for hydrocarbons were less than 1/34 in comparison with those of MDPE. On the other hand, thermoplastic polyester had higher affinity for esters than MDPE, especially for alkyl benzoates, and the distribution ratios were 1.7 approximately 9.1 times.
