Patent ID: 8066934

Claim:
A process for the production of polyamide compounds with natural fibers characterized by using: (A) natural fibers in bulk form and (B) natural fibers dried for 1.5 hour at 100° C. in a conventional kiln without superficial treatment; the process including the following stages: (1) preparing of natural fibers and (2) producing polyamide compounds with natural fibers; wherein the stage (1) includes the following sub-stages: (1.1) grinding of natural fibers in the form A and form B, until obtaining a mean length of about 0.1 to 15 mm; (1.2) superficially treating the natural fibers of stage 1.1 with cold plasma of O 2 or N 2 in a quartz reactor; (1.3) treating the fibers of stage 1.2 in a solution of 10% in NaOH mass, washed once in water from a main water supply, and once with distilled water; and (1.4) drying the fibers of stage 1.3 in a kiln at 100° C. for 2 hours; wherein stage (2) establishes the following sub-stages: (2.1) separating the amount of natural fibers to be used; (2.2) homogenizing the natural fibers prepared in advance with the polymeric matrixes of said polyamide compounds to obtain a compound; and (2.3) extruding the compound obtained in sub-stage (2.2).