ELASTIC GAS IMPERMEABLE MEMBRANE AND HYDROPNEUMATIC ACCUMULATOR CONTAINING SAME

摘要

Elastic membrane impermeable to gas comprises at least a film formed from a thin layer (1 in figure) of copolymer, impermeable to gas, containing OH groups, and two layers (2,3) between which the film is incorporated, consisting of flexible elastic material of copolymer containing polyamide and polyether blocks; and a coating of rubber (4,5) placed on at least one of the layers. Also claimed is a method for producing the membrane.