Magnetic substrates, composition and method for making the same

Abstract

A process of making a magnetic assembly having at least one magnetic layer and at least one printable substrate layer including the steps of providing a magnetic composition comprising about 70 wt-% to about 95 wt-% of at least one magnetic material and about 5 wt-% to about 30 wt-% of at least one thermoplastic binder, forming the magnetic composition into a magnetic layer, and directly applying the magnetic composition at an elevated temperature in molten form to a printable substrate layer, and to the magnetic composition and any articles made therefrom.

1 - 60 . (canceled)  
   
   
       61 . A process of forming a magnetic assembly having at least one magnetic layer having dimensions of thickness, width and length, and at least one printable substrate layer having dimensions of thickness, width and length, comprising the steps of: 
 a) providing a magnetic hot melt composition at a temperature between about 135° C. and about 205° C. with an extruder which is a single screw or double screw extruder, the magnetic hot melt composition comprising about 80 wt-% to about 95 wt-% of at least one magnetic material and about 5 wt-% to about 20 wt-% of at least one thermoplastic binder selected from copolymers of ethylene and vinyl acetate and mixtures thereof;    b) directly applying said magnetic hot melt composition with a slot die head at an elevated temperature when it is pliable to a printable substrate layer, the printable substrate layer formed of paper.    
   
   
       62 . The method of  claim 61  wherein said magnetic hot melt composition is provided with a single screw extruder.  
   
   
       63 . The method of  claim 61  wherein said magnetic hot melt composition is applied at a temperature between about 135° C. and about 190° C.  
   
   
       64 . The method of  claim 61  wherein said magnetic hot melt composition comprises about 85 wt-% to about 95 wt-% of said at least one magnetic material and about 5 wt-% to about 15 wt-% of said at least one thermoplastic binder selected from copolymers of ethylene and vinyl acetate and mixtures thereof.