FOLD-RESISTANCE REDUCING MECHANISM

摘要

A sheet of foldable material has a folding mechanism (46a, 46b) that is positioned to facilitate folding of the sheet into two parts. The folding mechanism includes two weakened lines (60,62) that diverge from a first location on the sheet and that converge on a second location on the sheet. The first and second locations are spaced apart and are positioned on a notional line defining a primary hinging line between the two parts of the sheet.