Www.woolwise.com Fibre Breakage in Carding Produced for the CRC for Premium Quality Wool undergraduate program by; Gary Robinson, CSIRO Textile & Fibre.

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Presentation transcript:

Fibre Breakage in Carding Produced for the CRC for Premium Quality Wool undergraduate program by; Gary Robinson, CSIRO Textile & Fibre Technology.

Effect Of Top Length On Price 20  21  22  Mean Fibre Length in Top (mm) PRICE

H = 0.52L S D M* V where H = Hauteur (mm) L = Staple length (mm) S = Staple Strength (N/ktex) D = Fibre Diameter (µm) M* = Adjusted percentage of middle breaks V = Vegetable Matter base (%) VALUE OF TOP EACH 1mm DECREASE IN HAUTEUR 10c/kg LOSS EACH 1% INCREASE IN NOIL 7c/kg LOSS TEAM Formula G. Robinson

Cost Implications (21  m Top) LOSS: 2mm Hauteur20c/kg LOSS: 1 percent unit Romaine 7 c/kg TOTAL27 c/kg Within MILL2 tonne / hr $540 / hr 50 Tonne Consignment 25hr mill time$13,500 G. Robinson

Fibre Breakage in Carding Source: G. Robinson (1996)

The Effect of Lubrication at the Card Hauteur –increases Noil –decreases less fibre breakage OILED NOT OILED CARD PRODUCTION RATE kg/h NOIL % HAUTEUR mm NOT OILED OILED G. Robinson

H mm Wool Micron  commercial lubricants No Oil G. Robinson Hauteur and Coefficient of Friction

Dry fibre 60% r.h. (-14% regain) Wet fibre PERCENT EXTENSION LOAD G. Robinson Moisture Content & Fibre Tensile Properties

Optimum Regain Card Production Time Delay Before Processing Hopper Regain Combing Noil, % Hauteur “ “ “ “ “ “ “ “ Means “ “ “ “ 7 days “ “ “ “ Means None G. Robinson