Flexible packaging applications require materials capable of controlling gas transmission while maintaining product preservation and packaging integrity. Depending on the target atmosphere and storage conditions, packaging structures may require different balances between oxygen, carbon dioxide, and water vapour barrier properties. In this context, polyamide selection becomes an important factor in packaging design.
UBE NYLON grades provide different gas barrier behaviours across several polyamide structures, allowing converters and packaging manufacturers to adapt material performance to specific application requirements. The comparison between PA6, PA6/6.6, PA6/6.6/12, PA6/12, and PA12 grades shows how polymer composition influences transmission behaviour for oxygen, carbon dioxide, methane, nitrogen, helium, and water vapour.
UBE NYLON 1030B (PA6) and 5033B (PA6/6.6) show low oxygen transmission values under the measured conditions, while PA6/12 and PA12 grades provide lower water vapour barrier performance. These differences illustrate how nylon structure directly affects gas barrier balance and packaging performance.
The CO₂/O₂ permeation ratio also shows progressive variation across the analysed polyamide grades, illustrating how transmission behaviour changes depending on polymer structure and barrier requirements. This supports the evaluation of suitable nylon grades for flexible packaging structures requiring specific balances between oxygen, carbon dioxide, and water vapour barrier properties under different environmental conditions.
Water vapour transmission values also vary considerably between materials, contributing to material selection according to preservation targets and storage conditions. This combination of barrier properties allows packaging engineers to assess suitable materials for flexible packaging applications requiring controlled gas transmission properties.
Download the technical document to explore the gas barrier properties of UBE NYLON grades.
