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Bag of coffee bean

  1. Jan 12, 2008 #1
    Recently I bought a bag of coffee beans from abroad on a plane, now the bag is very inflated. I want to take the bag on a plane again, would it burst?
  2. jcsd
  3. Jan 12, 2008 #2
    It may burst because of the gas created from biochemical reactions occuring in the beans. But the bag must not be so strong so the bust (if it happens) should be quite gentle.
  4. Jan 12, 2008 #3


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    It is good that your bag is tight to keep in the coffee flavour, however typically a "one-way valve" is used to allow CO2 to vent out and also keep air from getting in. Here is a related wiki discussing this outgassing phenomenon with coffee. The even go into how gases diffuse according to Graham's Law; The rate at which gases diffuse is inversely proportional to the square root of its density.
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