Features of time characteristics of diffusion properties of polymer modified film materials for technical application

<p>The changes of the oxygen permeability of packings from polymeric film materials intended for prolonged storage of metal products have been investigated. High indexes of initial oxygen permeability were recorded due to insecure insulating properties of weld seams, as well as increased diffusion characteristics after the third year of exploitation, The most characteristic structural defects, which emerging in polyethylene modified materials during the period of prolonged storage , have been identified by means of electron microscopic studies.</p> <p><strong>Key words</strong>: polymer materials, polyethylene, oxygen permeability, surface structure.</p><p> </p>