Patent ID: 8091819

Claim:
A thin shredder blade, comprising: at least one blade body formed on a large communicating protrusion and at least one cutting part located on the periphery of the blade body, wherein the at least one cutting part includes a blade point, wherein the at least one cutting part at least further comprises a primary protrusion protruding from the at least one cutting part, wherein the primary protrusion includes a top, a first plane extending from the top, the first plane intersecting an inclined plane extending between the top and the blade point, and an acute angle formed by the inclined plane and the blade body, wherein the first plane and the inclined plane have selected orientations and are punched together, wherein the primary protrusion and the large communicating protrusion communicating therewith are formed to increase the anti-bending strength of the blade body; wherein the blade point is formed without steps.