抄録
The authors have made researches in quest of methods to measure the bulkiness of tufts emerging from opening and picking machinery and devised three methods (by “the bulkiness of the tuft” we mean “the degree of opening”):
(1) A method which measures the bulkiness of a tuft from the degree of compression of the tuft and the degree of the tuft's recovery from compression.
(2) A method which measures the bulkiness of a tuft from the degree of deformation of the tuft by compression.
(3) A method which measures the bulkieess of a tuft from its specific volume.
