Patent ID: 7951460
Filing Date: 2011-05-31
Classification: B32B,H05K,Y10T

Abstract:
1. A laminate for a wireless suspension, comprising: a first metal layer comprising copper or copper alloy foil; an insulating layer; and a second metal layer comprising stainless steel foil; wherein: the laminate has a layer construction comprising first metal layer/insulating layer/second metal layer, wherein the copper or copper alloy foil being on one side of the insulating layer, and the stainless steel foil being on an opposite side of the insulating layer; the insulating layer has a multilayer structure comprising at least a first sublayer and a second sublayer; the first sublayer is a thermoplastic resin layer and has an adhesive interface with the first metal layer; the thermoplastic resin layer has a weight average molecular weight of from 6,000 to 500,000; a minimum value of a storage modulus of the thermoplastic resin layer at or above a Tg of the thermoplastic resin layer is in the range of 10 both sides of at least the first metal layer are roughened to have concaves and convexes, a thickness of the thermoplastic resin layer being higher than a height of the concaves and convexes of the surface of the metal layer.