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Asked by: Nausica Borg
events and attractions party supplies and decorationsWhy do balloons deflate overnight?
Air slowly diffuses through regularlatexballoons, but the gaps between latex molecules aresmallenough that it takes a long time for enough air to leak outtoreally matter. If you put helium into a latex balloon,itdiffuses out so quickly your balloon would deflate innextto no time.
Then, why do balloons deflate after a few days?
The small, individual helium molecules can escapethroughthe tiny holes in the latex far more easily than theconjoinedoxygen or nitrogen molecules can. Eventually they'll allget out,but the helium has a much easier time escaping. This iswhy yourhelium balloons deflate faster than the ones youfill withair.
Also, why do balloons deflate in cold air?
Cold air doesn't cause latexhelium-filledballoons to deflate, but it doesmake heliummolecules lose energy and move closer together. Thisdecreases thevolume inside the balloon and makes the shellof theballoon shrink and sink to the ground.
11” latex balloons generallylastbetween 12-20 hours filled with helium, and about2-3 dayswhen treated with Hi-Float. Foil balloons lastapprox. 5-7days. Air-filled balloons generally lastfor a coupleof weeks, but will not float.