Objective
Aim of the project is to demonstrate that it is possible, by a new cohesion device, to obtain a significant reduction of the compressed air consumption in the continuous filament interlacing process without altering mechanical textile properties and dyeability of the filament in comparison to the processes presently in use. A primary energy saving of 0.04 TOE per tonne of stretched and interlaced filament is foreseen to be attainable.
Aim has been reached.
Traditional spinning and stretching process for synthetic filaments is split into two steps: 1. spinning, cooling and winding of the unstretched filaments on bobbins.
2. stretching of the filament, interlacing and winding on corps.
Improvement of the nozzle efficiency. It has been noted that the geometrical form of the nozzle through which the filament passes has an influence over the efficiency of the process: that is over the amount of air required to obtain a certain degree of interlacing (number of knots per meter of yarn). The form of the section, different from the circular, has been optimized : a 16% reduction of air consumption was attained, that is, the specific consumption became 8,4 Nm3/Kg of yarn (compared to 10 Nm3/Kg of year with traditional nozzles).
These new nozzles have now to be optimized by a production on an industrial scale and by testing them with various qualities of yarn (differing for the form of the section and for the title) comparing the results for weaving efficiency and dyeability.
Programme(s)
Topic(s)
Call for proposal
Data not availableFunding Scheme
DEM - Demonstration contractsCoordinator
20031 Cesano Maderno
Italy