研究了不同复烤温度下,不同部位片烟复烤前后的收缩率及大小分布规律.结果表明:①片烟在复烤过程中其收缩率与复烤温度呈正相关,温度越高收缩率越大,且在相同的温度下不同部位片烟收缩率关系为下部烟>中部烟>上部烟；②复烤后1000 mm2以下的片烟比例增加,1000 mm2以上的片烟比例减小,并且片烟面积越大其比例变化率越大；③复烤后片烟特征尺寸大幅减小,相同部位片烟复烤温度越大特征尺寸减小的幅度越大,相同温度下不同部位片烟特征尺寸变化率的关系为:下部烟>中部烟>上部烟；④复烤工序有利于片烟分布均匀性的提高,复烤后片烟大小分布均匀系数增大,且相同部位片烟复烤温度越高其均匀性提高越大.%The shrinkage rate and size distribution of tobacco strips after being redried at different temperatures were studied. The results showed that: 1) During redrying, the shrinkage rate of strips positively correlated to redrying temperature; while at the same temperature, the stalk positions in the order of shrinkage rate were lower leaves > middle leaves > upper leaves. 2) After redrying, the percentage of strips with areas under 1000 mm2 increased, while that over 1000 mm2 decreased, at a rate positively correlated to strip's size. 3) The characteristic size of strips decreased significantly after redrying, and for the strips from the same stalk position, the decrease extent of characteristic size positively correlated to redrying temperature. At the same temperature, the stalk positions in the order of change rate of characteristic size were lower leaves > middle leaves > upper leaves. 4) Redrying increased the uniformity of strip size distribution, the uniformity coefficient of strip size increased after redrying; and for the strips from the same stalk position, size uniformity positively correlated to redrying temperature.
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