Ring comb binder mfd. by injection moulding, to hold stacked sheets of paper

摘要

The ring comb binder, to hold stacked sheets of paper, is an injection moulded one-piece binder (1) together with the back section (6) and the comb fingers (8). The ends (14) of the comb fingers do not overlap at the facing edge of the back section (6) or they have an overlap with a radial gap across the longitudinal line of the binder. At least the back section (6) and the comb fingers (8) are of polyethylene. Also claimed is an injection moulding operation to produce the binder with the back (6) and comb fingers (8) as a one-piece unit.