Coffee etc. is packed in sealed galvanised containers in which the pressure is artificially raised above atmospheric by injected gas, e.g. CO2, N2 or its oxides. The gas can be solid or liquid. - This pressure is pref. 0.2 kg/cm2 higher than atmospheric, and the pressure is produced in the container after de-aerating the product and the container by evacuation. These several evacuation processes are pref. interposed by gas flushing runs.
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机译：咖啡等被包装在密封的镀锌容器中，在其中通过注入的气体例如高压将压力人工升高到大气压以上。 CO2，N2或其氧化物。气体可以是固体或液体。 -这个压力是正确的。比大气压高0.2 kg / cm2，并且通过抽气将产品和容器脱气后，容器中会产生压力。这几个疏散过程是优选的。由冲洗气体插入。
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