Friction spinning is a relative newcomer to textile technology. It has
generated great interest because of its potential for wide application
of certain problems regarding the quality of yarn produced at high
output rates can be solved. General acceptance of the process is
hindered by uncertainty as to its capability of producing yarns of
sufficient strength at speeds greater than 300 m/min. (NB: as a guide,
maximum output rates of competitive technologies are no more than 150
m/min.) Friction spinning appears to have no intrinsic self-limit to
its maximum output rate, unlike ring and rotor spinning which are
limited by centrifugal effects leading to excessive yarn breakages.
The process will therefore provide something of a quantum leap in
output if acceptable yarn quality is achieved. [Continues.]
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.