Protective multilayer laminate for covering an electrochemical device
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United States of America Patent
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-
Aug 29, 1995
Grant Date -
N/A
app pub date -
Nov 10, 1993
filing date -
Nov 10, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A laminate is provided for use as a protective covering for inhibiting penetration of oxygen or oxygen and water therethrough and is particularly suitable for protecting components of an electrochemical cell such as a lithium battery. The laminate comprises an ionomeric polymeric layer for heat sealing layers of the laminate to one another and at least two flexible polymeric layers, one of which may comprise the ionomeric layer; and an oxygen scavenging agent incorporated in one of the flexible polymeric layers or disposed between any two of the flexible polymeric layers. It is preferred that the laminate be insulating as well for inhibiting transport of electricity as well as oxygen and water through the laminate and comprises two or more polymeric layers having, when combined, the characteristics of flexibility, electrical insulation, adhesiveness, and stability to water.
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