An Investigation by Fractography into the Mechanism of Fibre Breakage in Rotor Spinning

摘要

An investigation was carried out into the mechanism of polyester-fiber breakage during opening in the rotor-spinning machine. The broke-fibre ends were observed under the Projectian and a scanning electron microscope. A tracer-fibre technique was used to identify the broken ends of the fibres. The effects on the mechanism of fibre breakage of fibre length, linear density, and cross-section, the opening-roller type, and speed were also studied. The broken-fibre ends are broadly classified into those broken by direct contact with point (indirect breaks). The role of fibre entanglements is considered to be vital for causing indirect breaks, and a mechanism for the occurrence is such breaks is proposed.