A METHOD FOR FORMING A TUBE AND A METHOD AND A PACKAGING MACHINE FOR FORMING A PACKAGE

A METHOD FOR FORMING A TUBE AND A METHOD AND A PACKAGING MACHINE FOR FORMING A PACKAGE

There is described a method for forming a tube (3) of a web (4, 4') of packaging material comprising the steps of advancing the web (4) of packaging material along a web advancement path (P), overlapping a first lateral edge (19) of the web (4, 4') of packaging material with a second later...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: FERRARINI, Filippo, FERRARI, Claudio, SANIBONDI, Paolo, MACINI, Nicola
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
CONVEYING
HANDLING THIN OR FILAMENTARY MATERIAL
MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS
PACKING
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
STORING
TRANSPORTING
UNPACKING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:There is described a method for forming a tube (3) of a web (4, 4') of packaging material comprising the steps of advancing the web (4) of packaging material along a web advancement path (P), overlapping a first lateral edge (19) of the web (4, 4') of packaging material with a second lateral edge (20) of the web (4, 4') of packaging material for obtaining a longitudinal seam portion of the tube (3) and fusing at least an internal outer surface (34) of the first lateral edge (19) and an external outer surface (37) of the second lateral edge (20) with one another for longitudinally sealing the seam portion of the tube (3). The step of fusing comprises at least the sub-steps of directly heating the external outer surface (37) of the second lateral edge (20) and heating by contact the internal outer surface (34) by establishing contact between the internal outer surface (34) and the directly heated external outer surface (37).