Impermeable elastic membrane

Details Impermeable elastic membrane Impermeable elastic membrane

1994-01-12

1997-07-08

Nakarani, D. S.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

138 26, 138 30, 428337, 4284763, 428515, 524557, B32B 2730, B32B 2734

Patent

active

056459220

ABSTRACT:
An impermeable elastic membrane for hydropneumatic accumulators is made from an impermeable film of completely hydrolyzed polyvinyl alcohol, with a high molecular weight, and plasticized, with protective layers on both sides of polyamide, ethylene vinyl alcohol, or ethylene vinyl acetate. The membrane may be used in the hydropneumatic suspension of an automobile. The film can be obtained by extrusion, by injection molding, or by pressure molding.

REFERENCES:
patent: 5215124 (1993-06-01), Hattori et al.
Patent Abstracts of Japan, vol. 013, No. 287, (M-844), 30 Jun. 1989, & JP-A-10 79 438 (Dainippon Printing Co Ltd), 24 Mar. 1989.
C.A. Finch, "Polyvinyl Alcohol Properties and Applications," A Wiley-Interscience Publication, Wiley & Sons (1973) 352-388, 523-528.

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