One of technological process for expansion of the stalk silks is the way of high temperature and high humidity by utilizing the passage type of adjusting humidness.

利用调湿通道式高温高湿法对梗丝进行膨胀,这是我国卷烟行业中普遍采用的方法,但其膨胀率一般只能达到百分之二十几。