High-density compactor for fibrous material

Abstract From the Canadian patent

A method and apparatus for compressing fibrous material into dense bales having uniform size shape and, weight. Weighed longitudinally extended charges of material having a predetermined transverse dimensional profile are individually loaded into a compression chamber defined by side plates and first and second movable end platens. A long-stroke small-diameter hydraulic piston pushes the first end platen against the charge toward the second end platen, partially compressing the charge. The first end platen is then latched in a fixed position at full stroke while the second end platen via a short-, stroke large-diameter hydraulic piston applies a further, compressive force to the charge …