COPPER FOIL WITH CARRIER, PRINTED WIRING BOARD, LAMINATE, ELECTRONIC APPARATUS AND MANUFACTURING METHOD OF PRINTED WIRING BOARD

摘要

PROBLEM TO BE SOLVED: To provide a copper foil with a carrier having good suppressed change of peel strength of the carrier before and after heating press of the copper foil with the carrier.SOLUTION: The copper foil with a carrier has the carrier, an intermediate layer and an ultra thin copper layer in this order. A tensile strength reduction rate of the carrier after heating press of the copper foil with the carrier under a condition of pressure: 20 kgf/cmat 220°C for 2 hours is 20% or less.