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干燥剂的性能表示干燥剂是吸附剂的一种,它不象防虫剂和防锈剂放出某种物质,而是象活性碳和海绵体一样吸附某些物资,由于其吸附容量有限,为了使食品长期保持干燥状态,就要使用防湿性尽可能好的包装材料或容器和尽可能少的干燥剂,以防止在流通过程中湿气浸透食品包装内和食品不吸湿。日本工业规格中规定了干燥剂的性能:(1)相对湿度为20%时吸湿应在8%以上。(2)相对湿度为50%时吸湿应在20%以上。(3)相对湿度在90%时吸湿应在30%以上。
Desiccant performance Desiccant is a kind of adsorbent, it is not like insecticide and rust inhibitor release some substance, but like activated carbon and sponge adsorption of certain materials, due to its adsorption capacity is limited, in order to make Long-term food dry, it is necessary to use the best possible moisture-proof packaging materials or containers and desiccant as little as possible to prevent moisture in the circulation process soaked in food packaging and food non-hygroscopic. Japanese industrial specifications for the performance of the desiccant: (1) When the relative humidity of 20% moisture absorption should be more than 8%. (2) Moisture absorption should be above 20% when the relative humidity is 50%. (3) Moisture absorption should be above 30% when the relative humidity is 90%.