Colored composite material with cellulose fibers

A material comprising:

• at least 25% by weight of a polyolefin base polymer;
• at least 40% by weight of cellulose fibers dispersed through the polyolefin base polymer;
• at least 5% of a pigment, the pigment coloring the base polymer and the cellulose fibers;
• and
• a sealant selected from the group consisting of at least 1% of epoxidized soybean oil, at least 0.4% of polyolefin, and combinations thereof.

A method of fabricating a material, comprising:

• loading at least a base polymer, cellulose fibers, and a pigment into a mixer that includes a worm gear, the worm gear rotating to pre-mix the base polymer, the cellulose fibers, and the pigment, wherein the loading is at a first axial position of the worm gear;
• loading a sealant into the mixer at a second axial position of the worm gear that is downstream of the first axial position, the worm gear mixing the epoxidized soybean oil with the pre-mixture of the base polymer, the cellulose fibers, and the pigment to form a final mixture, wherein the sealant is selected from the group consisting of epoxidized soybean oil and polyolefin;
• and
• the worm gear extruding the final mixture through a die.