A lubricant pack for a paper shredder is presented, which includes two covering layers disposed side-by-side and edges thereof are thermally welded to form a sealed bag. Lubricant is enclosed in the bag, and at least one inner seal is configured in the bag. Surrounded by the inner seal is a hollow region not containing the lubricant. When the paper shredder cuts the lubricant pack, air contained in the lubricant tends to be released from the hollow region. Another lubricant pack for a paper shredder is presented, which includes two covering layers disposed side-by-side and edges thereof are thermally welded to form a sealed bag. Lubricant is enclosed in the bag, and at least one an inner seal is configured in the bag. Surrounded by the inner seal is a solid region not containing the lubricant, and multiple hollow impressions are formed in the solid region. When the paper shredder cuts the lubricant pack, air contained in the lubricant tends to be released from the hollow impressions of the solid region.

A lubrication package for lubrication of paper shredders wherein a lubricant is sandwiched between two coversheets which are sealed together near their peripheral edges to contain the lubricant. When the package is inserted into an operating paper shredder, the coversheets are shredded and release the lubricant to lubricate the shredding mechanism. The lubricant is prevented from all migrating towards one of the peripheral edges by interior seals that divide the package into at least two interior regions that do not contact sealed together peripheral edges of the package.

A wood chipper, a flywheel therefor, and a process of making the flywheel. A plurality of plates are laser cut to each have a thickness up to about inch, including laser cutting a plurality of apertures in each of the plates and laser cutting a central opening in each of the plates for receiving a shaft for effecting rotation of the flywheel. The plurality of plates are laminated together by inserting fasteners in corresponding ones of the apertures in the plates. At least one knife is attached to the laminated plates for cutting wood material to form chips of the wood material as the flywheel is rotated.

A shredder includes a shredder mechanism and a lubricant system. Each of a first and second plurality of strippers includes a first and second lubricant tubing opening formed therethrough. The first and second lubricant tubing openings are aligned with one another to form a first and second lubricant tubing passage through the first and second plurality of strippers. A lubricant delivery tubing is communicated in a closed loop to a lubricant reservoir and routed through both the first and second lubricant tubing passages. The closed loop enabling the lubricant to flow from the lubricant reservoir, through the lubricant delivery tubing and back to the lubricant reservoir. The lubricant delivery tubing is permeable to the liquid lubricant through a surface thereof along portions disposed within the first and second lubricant tubing passages for delivering a portion of the liquid lubricant flowing therethrough to lubricate the strippers and the cutter blades.

A lubricant sheet comprises a blank of material folded along a fold line into a folded configuration to form a lubricant containment pocket; a lubricant in the lubricant containment pocket; and a primary barrier for the lubricant. The primary barrier extends around and seals the lubricant containment pocket to hold the lubricant in the lubricant containment pocket. The blank of material includes a fold of material along the fold line forming a secondary barrier for the lubricant. When the lubricant in the lubricant containment pocket is being compressed during shredding of the lubricant sheet so as to cause some of the lubricant to be released through the primary barrier, the secondary barrier is configured to deflect the released lubricant that is released towards the secondary barrier.