摘要:
An object of the present invention is to provide a copper foil with carrier sheet which permits releasing of the carrier sheet from the copper foil layer even when hot pressing at a temperature exceeding 300° C. is applied in the production of a printed wiring board. In order to achieve the object, a copper foil with physically releasable carrier sheet having a copper foil layer on the surface of the carrier sheet through a bonding interface layer, characterized in that the bonding interface layer is composed of a metal layer and a carbon layer. It is preferable for the bonding interface layer to be composed of a metal layer of 1 nm to 50 nm thick and a carbon layer of 1 nm to 20 nm thick.
摘要:
The object is to provide copper foil of high adhesion even when the roughness Rz of a nodular surface of the copper foil is low, and a method of manufacturing the copper foil. To achieve this object, there is adopted a copper foil which is characterized in that an area coefficient C(S), which is defined by A(S)/B(S) from a three-dimensional surface area A(S), which is obtained by performing three-dimensional measurement of a surface area of a nodular surface of a copper foil sample S under a laser microscope, and from a measuring region area B(S), which is an area of a measuring region of the three-dimensional surface area A(S), and a roughness Rz(S) of a nodular surface of the copper foil sample S, which is measured by a stylus-type roughness meter, have a relationship of equation (1) below, and in that the roughness Rz(S) is 1.0 μm to 3.0 μm, 0.5×Rz(S)+0.5≦C(S) (1) where Rz(S) is a numerical value represented by μm.