Cutting man-made fibres on knife-type machines

Cutting is a physicomechanical process which is effected on interaction of a cutting instrument and a material. It is one of the important parts of the technological process of manufacturing man-made fibres. In 1981, in the USSR, about 50% of the total output of manmade fibre was produced in cut form. Unfortunately, little information has been published in the literature on the principles of cutting man-made fibres on knife-type machines or on the analytical relationships between the basic parameters which characterize this process. However, in numerous works [1-5] from related branches of science and technology (mowing and grinding agricultural crops, cutting wood or leather, shearing sheep) there are broad experimental data on cutting viscoelastic materials which are close to man-made fibres in properties.