Water-soluble balloon
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United States of America Patent
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Feb 7, 1995
Grant Date -
N/A
app pub date -
May 19, 1993
filing date -
May 20, 1992
priority date (Note) -
Expired
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Abstract
A balloon is formed from a water-soluble film which mainly comprises a polyvinyl alcohol. Coloring agents as food additives are used for pigmenting the balloon. The balloon per se is soluble in water upon coming in contact with water and accordingly, it never becomes a cause of environmental pollution. The coloring agents used are those for use in foods and thus they do not become a cause of environmental pollution.
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