Method for stamping a bending edge in a package material

Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container

Reexamination Certificate

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Details

C493S143000, C083S875000

Reexamination Certificate

active

10967422

ABSTRACT:
Stamping of a layer (2) of package material, such as cardboard or plastics, for forming one or more bending edges may take place according to the invention by a method wherein a stamping tool (8), which is provided with preferably three ribs (9a, b, c), is pressed down into the layer (2) and thereby forms slots (11a, b, c) in the bending edge in one working cycle. The stamping may take place very precisely, and since the stamping is carried out in one working cycle, an uprecedentedly high production rate may be achieved. Since the stamping tool does not need a lower tool part, but merely a support (10), the stamping may be performed simultaneously with the punching in one and the same working cycle.

REFERENCES:
patent: 4064409 (1977-12-01), Redman
patent: 5073162 (1991-12-01), Campbell et al.
patent: 6364590 (2002-04-01), Gayoso
patent: 189909 (1986-08-01), None
patent: 51-017547 (1976-02-01), None
patent: 07-304963 (1997-05-01), None
patent: WO 00/76759 (2000-12-01), None

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