Abstract:
The invention relates to a method for joining a sealing seam of a tubular bag packaging by means of an ultrasonic applicator (10), characterized in that said ultrasonic applicator (10) generates ultrasonic waves at a frequency of between 0.1 MHz and 5 MHz, preferably between 0.5 MHz and 2 MHz. The invention also relates to a longitudinal seal joining device of a tubular bag machine for use with said claimed method.
Abstract:
Apparatus for vertically supporting and maintaining a web of plastic film horizontally aligned in applications such as machines that form the plastic film into bags and fill them. Separate coplanar consecutively spaced plates are aligned with and extend through a web normal traversing plane. One of the plates has a peak edge extending out of the web normal traversing plane in a first direction, whereas another has a peak edge extending out of the web normal traversing plane in a second opposite direction. The peak edges define an undulating plastic film travel path between a web upstream location and a web downstream location. The web of film is tensioned between the upstream location and the downstream location and travels along the continuous undulating path. The film flexibly bends over the peak edges as a result of the tension and is thereby supported and maintained aligned.
Abstract:
The invention relates to a method for joining a sealing seam of a tubular bag packaging by means of an ultrasonic applicator (10), characterised in that said ultrasonic applicator (10) generates ultrasonic waves at a frequency of between 0.1 MHz and 5 MHz, preferably between 0.5 MHz and 2 MHz. The invention also relates to a longitudinal seal joining device of a tubular bag machine for use with said claimed method.
Abstract:
In a method for producing tubular bags, a forming shoulder for shaping a packaging material web into a tubular bag having a laterally offset longitudinal seam includes a shoulder part and a prism part connected to each other along a shaping edge. Half of the shaping edge facing the incoming packing material web lies in the first and second quadrants of the cross-section of the prism part and the seam is formed in the fourth quadrant. Curvature-free surface lines in the second and fourth quadrants originating from the shaping edge approach each other with increasing distance from the prism part, and the shaping edge angle measured between the surfaces of the shoulder part and the inner face of the prism part decreases from the second to the third quadrant and increases again from the third to the fourth quadrant.
Abstract:
Tandem, vertically-aligned vertical form, fill, and seal (VFFS) assemblies enable a method for manufacturing an ingredient package. An inner ingredient-bearing package is manufactured by a first superior VFFS assembly, which inner package is then downwardly displaced to a second inferior VFFS assembly. The inner package and a second ingredient are deposited (filled) into an open-ended outer packaging material being formed by the inferior VFFS assembly. After deposing the inner package and the second ingredient into the formed outer package, the outer package and inner package are sealed to one another at superior ends thereof to finally form an ingredient package. The finally formed package may be removed from partially formed packages in superior adjacency thereto. The finally formed package compartmentalizes the first and second ingredients for later consumer consumption.
Abstract:
In order to achieve in a vertical tubular bagging machine (1) an even foil path precise in location, a foil-removing system is suggested, which provides for a secure introduction of the edges (29) of a foil web (3) into a longitudinal sealing device (7) in order to weld a foil tube (5) in its transport direction (8). The foil-removing system has rollers (10) driven by a drive (12), which rollers, viewed in transport direction (8), are provided between the forming shoulder (4) and the longitudinal sealing device (7), and an additional foil-removing means (19) with a drive (20) and a belt (22) rotating around two wheels (21), which belt acts against the foil tube (5) and thus against the fill pipe (6), and which acts at a point of the foil tube (5) where the longitudinal seam (9) is not. The two drives (12, 20) are synchronized with one another.
Abstract:
A method for making a reclosable bag (56) with gussets (36, 38) in which a zipper profile (16) is attached to bag-making film (10), while leaving side margins (20, 22) of the film. The film (10) is folded as a tube (26). Gusset-forming wheels (34, 35) indent the tube (26) to form the side gussets (36, 38). The side gussets (36, 38) are sealed to the tube (26) and/or the zipper profile (18) with the profile sealed to the tube. The tube (26) is sealed and cross-cut to form the bag (56). In an alternative method, lengths of tubular gusset material (112) are positioned on a lower web (110) of film (101) transverse to a bag-forming direction. A zipper (124) is sealed in the bag-forming direction to the webs (108, 110), and the gusset material (112). The webs (108, 110) and the material (112) are sealed to each other to form an end seal (140) as well as cross-cut and sealed to form the gussets (144, 148) of a reclosable bag (147). The webs (108, 110) may be sealed above the zipper (124) to form a tamper-evident feature (166).
Abstract:
A packaging machine for making substantially air-tight bags at high speed. The machine includes a film drive and pinch roll pair, a pair of film pull belts, and a pair of zipper drive rollers for pulling plastic film and zippered strip through the machine. The machine can produce recloseable bags with zipperlocks by including zippered strips and a zipperlock applicator and feed and apparatus selectively releasing the tension from the zippered drive rollers.
Abstract:
A method and apparatus for forming a tubular package is disclosed. A longitudinally advancing strip of film material is guided about a mandrel so as to form a tubular body. As the film advances, margins of the film at the longitudinal edges are guided together into a fin and the fin is guided against the tubular body portion. The edge margins are then welded to each other and to the tubular body portion to form a tube closed cylinder. Individual packages may be formed and filled using conventional form, fill and sealing equipment.
Abstract:
Methods and apparatus for making gussetted packages having openable and reclosable interlocking seals, the seals having male and female portions, snap detents, and formed transversely to the direction of film flow. The packaging film is provided at package length intervals with thermoformable strips secured thereto transversely to the running length of the film, and is fed to a modified standard vertical form, fill and seal packaging machine with gussets forming tooling where the film is formed into a bag with the thermoformable strips inside at the upper end of the bag, product deposited into the bag, the bag sealed, the reclosable interlocking seal formed, and the bag severed from the next bag being formed. The reclosable seal provides auditory and tactile indications of seal closing. Some packages are formed with the thermoformable strips in the gusset, and some are formed with the gusset free of strip material.