Rieter

The Platt Saco Lowell Masterspinner

Index

This is shown in Fig. 8 and Fig. 9. A drawframe sliver (2) as normally produced in short-staple spinning mills runs from a can (1) into an opening assembly. This consists of a feed roller (3) and an opening roller (4), and opens the fiber strand in the same way as the opening device in rotor spinning.

The separated fibers pass through a specially shaped fiber channel (5), carried by an air flow from a vacuum inside the suction roller (6) into the converging region between the two friction rollers. As previously mentioned, one of these rollers is perforated to act as a suction roller (6), whereas the second roller is solid. A yarn (8) is formed in the convergent zone by the method already described and passes via delivery rollers (9) and winding rollers (10) to a cross-wound package (11). A number of ten-position machines and a few full-scale machines with 144 spinning positions were delivered in the 1980s. However, these machines have not been successful in the longer run, mainly for two reasons:

  • inadequate yarn strength, i.e. low utilization of the fiber properties, and
  • inconsistency of the spinning results The Masterspinner has therefore disappeared from the market.

Fig. 8 – The Masterspinner friction-spinning machine

Fig. 9 – The spinning principle of the Masterspinner