Magnetic layer with high-permeability backing

Details Magnetic layer with high-permeability backing Magnetic layer with high-permeability backing

B - Operations, Transporting

32

B

B32B 15/08 (2006.01) B32B 5/16 (2006.01) B32B 15/02 (2006.01) B32B 33/00 (2006.01) B32B 37/14 (2006.01)

Patent

CA 2527183

A magnetic article has a magnetic layer having magnetized particles dispersed in a natural or synthetic resin binder and an adjacent high-permeability layer having high- permeability particles dispersed in a natural or synthetic resin binder. The magnetic article may be prepared by co-extruding a mixture of magnetizable particles in a binder and high- permeability particles in a binder through a single die to produce an integral gradient function article having a region of high concentration of magnetizable particles adjacent to one surface of the article and a region of high concentration of the high-permeability particles adjacent to another surface of the article, and magnetizing at least a portion of the magnetizable particles.

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