METHOD FOR BOBBIN CLASSIFICATION ACCORDING TO THE STIFFNESS OF A YARN PACKAGE AND AN APPARATUS FOR DETECTING YARN PACKAGE PERMEABILITY

摘要

The invention relates to a method for bobbin classification according to the stiffness of a yarn package (41) arranged on a tube (42) for dyeing, whereby bobbins (4) are sorted into groups according to the permeability of the package (41).;The invention also relates to an apparatus for detecting the permeability of the yarn package (41), which is arranged on a tube provided with a plurality of radial through holes (421), whereby the ends (43, 44) of the tube (42) are closed and the inner space of the tube (42) is interconnected to a source (1) of compressed air, whereby a flow meter (2) is arranged in the supply piping leading into the inner space of the tube (42) and a pressure gauge (3) is connected to the outlet piping of the source (1) of compressed air.