| 摘要 |
A greeting card is disclosed which has a self-inflating balloon contained therein, which balloon inflates either upon opening the greeting card, upon removing the greeting card from an envelope, or upon manual activation by the individual receiving the greeting card. A gas generator is provided with two reactants which are separated by a physical barrier until the device is activated, at which time the reactants mix to generate gas used to inflate the balloon. In the preferred embodiment, the physical barrier is a zipper-like fastener element which is pulled apart by a triggering mechanism to activate the gas generator to inflate the balloon.
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