The results of investigating the influence of the concentration of glass flake filler on oxygen, carbon dioxide, and water vapour permeability in composites based on high-density polyethylene blends are given.

A comparative assessment of the gas barrier properties of polymeric materials of different chemical structure and of composites with organomodified montmorillonite based on polyamide-6 is carried out, with the aim of using them as a barrier layer for polymer hot water pipes.