A party popper is an object commonly used at parties. It emits a loud popping noise by means of a small friction-actuated explosive charge that is emitted by pulling a string. The explosive charge comes from a very small amount of Armstrong's mixture (a highly sensitive explosive) in the neck of the bottle-like shape. In some party poppers the explosive charge is replaced by compressed air. In party poppers with an explosive charge, there are less than 0.25 grains of explosive charge. The streamers are non flammable for safe use. The charge or compressed air blows out some confetti or streamers and emits a popping sound.
There are also party popper revolvers on the market which use a speed loader style cartridge filled with six party popper charges inserted into a normally colorful plastic device loosely resembling a pistol or revolver. Its functionality is very much the same as a pistol, the depression of the trigger apparatus rotates the chamber so a live charge is presented to a hammer, which falls onto a regular cap ring embedded in the bottom of the chamber. The chambers are one-use only.
Party poppers are generally listed as a novelty item or trick noise maker and are sold year-round in shops which sell party supplies.
Party poppers are considered as "indoor fireworks", and therefore are subject to legal regulation in some jurisdictions. For example, in the United Kingdom, party poppers cannot be sold to persons under 16 years old.
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