Title:
GUIDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/172158
Kind Code:
A3
Abstract:
A guiding device for guiding a sheet of packaging material (3) in a packaging machine (1) for producing sealed packages (2), said guiding device comprising a plurality of folding rollers defining a passage (31) for said sheet of packaging material (3) and causing a first longitudinal edge (11) of said sheet of packaging material (3) to superimpose to a second longitudinal edge (15) of said sheet of packaging material (3), opposite said first longitudinal edge (11), to define an overlapping area (16) of said first longitudinal edge (11) and said second longitudinal edge (15), said overlapping area having a certain extension, said passage having a longitudinal axis (A), said plurality of folding rollers comprising a group of first folding rollers (32) rotatable around first rotation axes (C) arranged in a common first plane, said plurality of folding rollers further comprising at least one second folding roller (33) rotatable around a second rotation axis (D) arranged in a second plane, different from said first plane, said guiding device further comprising a driving arrangement (34) for moving said at least one second folding roller (33) towards and away from said longitudinal axis (A) of said passage (31) so as to control the extension of said overlapping area (16).
Inventors:
COSTA STEFANO (IT)
PEDRETTI RICHARD (IT)
AMIDEI LUCIANO (IT)
PEDRETTI RICHARD (IT)
AMIDEI LUCIANO (IT)
Application Number:
PCT/EP2018/056395
Publication Date:
January 03, 2019
Filing Date:
March 14, 2018
Export Citation:
Assignee:
TETRA LAVAL HOLDINGS & FINANCE (CH)
International Classes:
B65B41/16; B29C53/54; B65B9/20; B65B9/22; B65B41/18; B65B57/04; B65B59/00
Domestic Patent References:
WO2009154532A1 | 2009-12-23 | |||
WO2009067065A1 | 2009-05-28 | |||
WO2000041932A1 | 2000-07-20 |
Foreign References:
EP1172299A1 | 2002-01-16 | |||
EP0903292A1 | 1999-03-24 | |||
EP1116659A1 | 2001-07-18 | |||
EP2143643A1 | 2010-01-13 |
Attorney, Agent or Firm:
TETRA PAK - PATENT ATTORNEYS SE (SE)
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