Noise suppression sheet
Disclosed is a noise suppression sheet 1 including a resin layer 2 , a non-magnetic metal layer 3 , and a metal magnetic layer 4 in this order.
1. A noise suppression sheet comprising:
a resin layer;
a non-magnetic metal layer; and
a metal magnetic layer
in this order, wherein
the resin layer comprises an electroless plating catalyst and a resin, and the non-magnetic metal layer is a non-magnetic metal plating layer, and
the resin layer includes a mixed region formed from a surface of the resin layer on the non-magnetic metal layer side toward an inside of the resin layer, and contains a metal constituting the non-magnetic metal layer and the electroless plating catalyst incorporated inside the resin layer.
2. The noise suppression sheet according to claim 1 , wherein a thickness of the metal magnetic layer is 1 to 10 μm.
3. The noise suppression sheet according to claim 1 , further comprising an adhesive layer provided on a main surface of the resin layer opposite to the side of the non-magnetic metal layer.
4. The noise suppression sheet according to claim 1 , further comprising a rustproof layer or an insulating layer provided on a main surface of the metal magnetic layer opposite to the side of the non-magnetic metal layer.