PURPOSE: To discriminatingly separate polypropylene fibers from polypropylene fibers mixed with discontinuous fibers come from the spinning of all the synthetic fibers, especially silk fibers.
CONSTITUTION: In a method for separating polypropylene in a processing of silk schappe, a lap (14) of silk fibers partly combed or at least made parallel undergoes an action of heating between 110-160°C together with a simultaneous action of controlled compression so as to form clusters of polypropylene and silk fibers and thereafter an action of combing or pre-combing for the definitive removal of clusters of polypropylene and silk fibers. A device for separating polypropylene in the processing of silk schappe is positioned downstream of a drawing frame (13) or an analogous machine producing the lap (14) of silk fibers and provides a conveyor means (belt/drum) cooperating with means that heat and apply adjustable pressure to the lap (14).
JIYANBITSUTOORE BARENTO
PAORO BISHIGUERA
Next Patent: MACHINE FOR FORMING WINDING ON ROLL FOR COMBING MACHINE