Amusement devices: toys – Inflatable – Having check valve
Patent
1993-05-19
1995-02-07
Hafer, Robert A.
Amusement devices: toys
Inflatable
Having check valve
383 1, 383 3, 383 44, A63H 306, B65D 3002, B65D 3000, B65D 3024
Patent
active
053871472
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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Encyclopedia of Polymer Science & Engineering, 2nd Edition, vol. 17, John Wiley & Sons, New York, "Vinyl Alcohol Polymers", pp. 167-173.
Ohshima Masatake
Ohsone Yasuhiro
Satoh Masanori
Aicello Chemical Co., Ltd.
Hafer Robert A.
Mitsui & Co. Ltd.
Mitsui Plastics, Inc.
Muir D. Neal
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