METHOD TO IMPROVE COHESIVE CAPACITY OF CHOPPED ARAMIDE FIBER Russian patent published in 2010 - IPC B29B9/14 D06M15/564 

FIELD: process engineering.

SUBSTANCE: proposed invention relates to thermosetting materials, particularly to methods intended for increasing cohesive capacity of filaments made from chopped aramide fiber. Proposed method comprises impregnating the fiber with film-forming binder, drying impregnated fiber, finishing the fiber (not obligatorily) and chopping said fiber into 1 to-16 mm-long parts. Prior to applying the binder, fiber is subjected to twisting to produce fiber with 10-to-150 twists per metre. Fiber is chopped at rotor-type chipper.

EFFECT: invention allows increasing bulk density of fibrous materials, thus, facilitating feeding said materials into extruder.

8 cl, 3 tbl, 3 ex