段ボール用ライナー、この段ボール用ライナーを用いて箱圧縮強度を高める方法、及び箱圧縮強度が高い段ボール用ライナーを判別する方法

摘要

PROBLEM TO BE SOLVED: To provide a liner for corrugated cardboard which allows effective exertion of box compression strength.SOLUTION: A liner for corrugated cardboard having at least two layers including front and back surface layers causes delamination in at least one interlayer of the liner of individual layers in the boundary part between the side surface and the top surface and/or the bottom surface until the side surface of the corrugated cardboard box becomes buckled, in a box compression test, by JIS Z0212, of a corrugated cardboard box formed by using the liner.