Aerosol manufacturing

  History of the Aerosol The first use for an aerosol package arose during World War II, but the idea of using low-pressure liquefied gas to atomize droplets of liquid in the air was developed in 1924. Canisters filled with insecticide and propellants were used to protect U.S. servicemen from insects carrying diseases such as malaria. Shortly after the war, Robert Abplanalp, founder of Precision Valve Corporation (PVC), invented the first mass-produced aerosol valve. The patent was filed in September 1949 and was issued on March 17, 1953. From that invention, the aerosol industry quickly developed in the United States and around...

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advocate devil

A devil's advocate is someone who argues against an idea, position, or cause for the sake of argument, rather than out of actual opposition. While a devil's advocate can simply play a contrary role, someone who argues against an idea can also stimulate discussion which can identify weak points in an argument which need to be addressed. Therefore, one could consider this approach incredibly useful, albeit stressful for someone advocating alone against an accepted idea in a group. The term is derived from a tradition in the Roman Catholic Church, in which someone would act as an advocate for the devil, arguing against the canonization of someone...

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