INSTITUTO DE INVESTIGACIONES EN RECURSOS NATURALES Y SUSTENTABILIDAD JOSE SANCHEZ LABRADOR S.J.
Unidad Ejecutora - UE
congresos y reuniones científicas
DETERMINATION OF THE OPTIMAL NUMBER OF RUNS USING AM2 DEHAIRING TECHNOLOGY IN FIBERS OF PATAGONIAN GOATS (PATAGONIAN CASHMERE
CASTILLO M.F.; E.N. FRANK, L.M. CARUSO, MOLINA, M.G. Y HICK M.V.H.; FRANK E.N.; FRONDIZI SEGHETTI D.G.
Simposio; 7th European Symposium on South American Camelids and 3rd European Meeting on Fibre Animals; 2017
Universidad de Camerino
AM2 dehairing technology reduces the objectionable fibers content of shorn fleeces. Nonetheless, it reduces fiber length and the final yield is affected by the successive runs through the dehairing machine, though it allows to specify the number of passes required for each lot (Singh, 2003; Frank et al., 2009). The aim of this work is to establish the number of passes that the machine should make until optimal performance is reached from an objectionable fibers content, fiber length, fiber diameter and yields to dehairing perspective. Work was carried out on fiber sheared from north Patagonian goats, whose fleece was scoured and dehaired until the process seemed final from a visual assessment. From each run, samples were extracted for processing at the laboratory. Measurements comprised: yield to dehairing (%Y), objectionable fiber content (w/w) (FOC), average fiber length (FL) and average fiber diameter (FD). The variables obtained were fitted with a polynomial model and the first derivative of the function was calculated. The value of the variable for the run with the minimum value was estimated, and the value of the variables from an expected optimal value were calculated with the same function. The lowest %Y was obtained in run 10, the minimum FOC in run 6, the lowest FL in run 7 (2.6 cm) and the lowest FD in run 5 (18.1 microns). It is concluded that, if 4 runs are assumed to be optimal to obtain less than 1% of objectionable fibers, a %Y: 35 - 37 %, FOC: 0.2 %, FL: 3.5 cm and FD: 18.3 ìm would be obtained.