Apparatus for folding cardboard articles

Manufacturing container or tube from paper; or other manufacturi – Bending – Folding

Reexamination Certificate

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Details

C493S183000, C493S356000, C493S397000, C493S399000

Reexamination Certificate

active

06916280

ABSTRACT:
To simplify and speed up folding of plate-like elements (1) along a fold line (2), more particularly in a continuous operation, a method and a an apparatus for folding plate-like elements (1) are proposed which eliminate the use of counter-impression elements in the region of the fold line (2). The apparatus includes a second impression device (6) that folds a second section (4) of the plate-like element (1) about the fold line (2) by a first force component oriented perpendicular to the plane of the second section (4). At the same time the second impression device (6) produces a second force component oriented in the plane of the second section (4) and acting in the direction of the fold line (2) to urge a first section (3) of the plate-like element (1) against a first impression device (5).

REFERENCES:
patent: 3695151 (1972-10-01), Caron
patent: 3716962 (1973-02-01), Langen et al.
patent: 3977306 (1976-08-01), Flynn
patent: 4211356 (1980-07-01), Tsuchiya et al.
patent: 5106359 (1992-04-01), Lott
patent: 5393291 (1995-02-01), Wingerter
patent: 5531852 (1996-07-01), Walsh et al.
patent: 5853360 (1998-12-01), Jeffrey et al.
patent: 6226965 (2001-05-01), Lam
patent: 6569073 (2003-05-01), Bridges et al.
patent: 6622461 (2003-09-01), Gambetti

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