To provide an electrolytic copper foil with a peelable type carrier foil, capable of easily peeling the carrier foil even when heated at a temperature over 300°C.
In an electrolytic copper foil 1 with a carrier foil, having a layer structure of a carrier foil 2, a junction interface layer 3, a heatproof metal layer 5 and an electrolytic copper foil layer 4, an electrolytic copper foil having a predetermined surface roughness (Rzjis), glossiness [Gs(60°)], etc., is used as the carrier foil. In a GDS analyser, used are the electrolytic copper foil with the carrier foil etc., satisfying a relationship of ([W2]-[W1])/[W1]≤0.3, where W1 represents the half width of a peak when a component profile in a depth direction of the heatproof metal layer is measured toward a carrier foil side from an electrolytic copper foil layer side of the electrolytic copper foil with a carrier foil, and W2 represents the half width of a peak when a component profile in a depth direction of the heatproof metal layer is measured after the electrolytic copper foil with a carrier foil is heated at a temperature of 300°C.
OBATA SHINICHI
TATSUOKA AYUMI
| JP2007217787A | 2007-08-30 | |||
| JP2007217787A | 2007-08-30 |