Composite material for balloon and balloon made thereof
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United States of America Patent
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Jan 18, 1994
Grant Date -
N/A
app pub date -
Oct 31, 1991
filing date -
Nov 2, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A composite material for a balloon having a transparency and a gas barrier, including a polymer base layer and a transparent thin layer of a silicon oxide provided on one surface of the polymer base layer, the silicon oxide layer having an atomic ratio of silicon to oxygen of 1:0.3 to 2. The composite material has a high degree of barrier to helium gas or hydrogen gas. A balloon produced from the composite material retains its buoyancy for a long period of time.
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