There is described a forming assembly (10b) for forming a plurality of sealed packs (3) starting from a tube (2) of packaging material, comprising first conveying means (15b) movable along a first path (Q) comprising: a first operative branch (Q1), which has a main elongation direction parallel to an advancing direction (A) of the tube (2); and a first return branch (Q2) comprising an initial portion (35b) which is arranged immediately downstream of the operative branch (Q1) and extends transversally to the advancing direction (A); first conveying means (14b, 15b, 14b′) comprise one of a sealing element (22b) or a counter-sealing element (22a); and a first half-shell (21b), which is movable along the operative branch (Q1) between: a first rest position, in which it is detached from the tube (2) or the formed pack (3); and a first operative position, in which it grips the tube (2) or the formed pack (3); the first half-shell (21b) is arranged in the first operative position along a first portion (34b) of the first operative branch (Q1); the first half-shell (21b) is kept in the first operative position along an initial portion (35b), so as to grip and convey the pack (3) in a staggered position with respect to the advancing direction (A); and moves, from the first operative position to the rest position at an end (36b) of the initial portion (35b) opposite to the first portion (34b), so as to discharge the pack (3) in a staggered position with respect to the advancing direction (A).

There is described a forming assembly (10a, 10b) for forming a plurality of sealed packs (3) starting from a tube (2) of packaging material, comprising: a track (13a, 13b); a first element (15a, 15b), which is cyclically movable along the track (13a, 13b) and comprises, in turn, one of a sealing element (22b) or a counter-sealing element (22a) adapted to seal the pack (3); and a second element (14a, 14b), which is cyclically movable along the track (13a, 13b) and comprises, in turn, a first half-shell (21a, 21b; 21a′, 21b′) adapted, in use, contact the tube (2) so as to bound at least part of a respective pack (3) and control the shape of the pack (3) during the formation thereof; the first element (15a, 15b) and the second element (14a, 14b) are self-movable along the track (13a, 13b) independently of one another.

A sealing system (100) for sealing a packaging material is disclosed comprising an independently movable sealing device (101) being movably mounted on a track (102), a power generator (105) in communication with the sealing device (101) to supply a power signal (p1) at a frequency for said sealing over a power communication line (106), the sealing device (101) comprising a housing (107), a detection device (108) arranged in the housing (107) to register detection data of an environment therein and/or of sealing parameters associated with said sealing, and a transmitter (109) connected to the detection device (108), the transmitter comprising an encoder (110) to convert the detection data to at least one frequency pulse (p2), whereby the transmitter (109) communicates the at least one frequency pulse as a detection signal to a receiver (111) over the power communication line (106).

An ultrasonic sealing device including a sonotrode for sealing a packaging material, including a piezoelectric transducer to generate ultrasonic acoustic vibrations for the sealing, a housing, a power circuit connected to the piezoelectric transducer. The power circuit is enclosed in the housing, and an absorbent arranged in the housing to absorb moisture in an atmosphere therein to lower humidity. A method of controlling humidity in an ultrasonic sealing device is also described.

An ultrasonic sealing device including a sonotrode for sealing a packaging material, including a piezoelectric transducer to generate ultrasonic acoustic vibrations for the sealing, a housing, a power circuit connected to the piezoelectric transducer. The power circuit is enclosed in the housing, and an absorbent arranged in the housing to absorb moisture in an atmosphere therein to lower humidity. A method of controlling humidity in an ultrasonic sealing device is also described.

The present disclosure relates to methods and apparatuses configured to bond elastic laminates together between a rotating drum and anvil. The drum includes a fluid nozzle and a press member. As such, a first elastic laminate and a second elastics laminate may be advanced in a machine direction onto the rotating drum. A fluid is heated to a temperature sufficient to partially melt substrate layers of the first and second elastic laminates. As the drum rotates, the press member shifts radially outward from the drum wherein a length, L, of the pattern surface extends in the cross direction across a plurality of elastic strands of first and/or second elastic laminates. And the partially melted portion of the substrate layers of the first and second elastic laminates and the plurality of elastic strands are then bonded together by being compressed between the pattern surface and the anvil roll.

There is described a packaging assembly configured to form and seal a plurality of packs for containing a pourable food product starting from a tube of packaging material; the packaging assembly comprises a pair of tracks and at least a pair of moving elements, which are cyclically movable along the tracks, respectively; each moving element comprises one forming unit configured to cooperate with the tube so as to surround a portion of the tube destined to form a main portion of one respective pack; and one sealing unit configured to cooperate with the tube to sequentially seal the tube at predetermined consecutive cross sections, each pair of consecutive cross sections forming opposite sealing bands of one respective pack; each forming unit is mounted onto the respective moving element in a linearly movable manner towards and away from the sealing unit mounted onto the same moving element.

The present disclosure relates to methods and apparatuses configured to bond elastic laminates together between a rotating drum and anvil. The drum includes a fluid nozzle and a press member. As such, a first elastic laminate and a second elastics laminate may be advanced in a machine direction onto the rotating drum. A fluid is heated to a temperature sufficient to partially melt substrate layers of the first and second elastic laminates. As the drum rotates, the press member shifts radially outward from the drum wherein a length, L, of the pattern surface extends in the cross direction across a plurality of elastic strands of first and/or second elastic laminates. And the partially melted portion of the substrate layers of the first and second elastic laminates and the plurality of elastic strands are then bonded together by being compressed between the pattern surface and the anvil roll.

There is described a unit (1) for forming/advancing at least one pack (3) or at least one portion of a pack 5 (3), comprising: a frame (12a, 12b), at least one carriage (14, 14b), which is movable along a path (13a, 13b) with respect to frame (12a, 12b) and is adapted to form/advance said pack (3) or said at least one portion of a pack (3), an electromagnetic stationary device 10 (50), at least one tag (52a, 52b) carried by carriage (14a, 14b), and wireless communication means (51) configured to establish a bidirectional communication between stationary device (50) and tag (52a, 52b).

The present disclosure relates to methods and apparatuses configured to bond elastic laminates together between a rotating drum and anvil. The drum includes a fluid nozzle and a press member. As such, a first elastic laminate and a second elastics laminate may be advanced in a machine direction onto the rotating drum. A fluid is heated to a temperature sufficient to partially melt substrate layers of the first and second elastic laminates. As the drum rotates, the press member shifts radially outward from the drum wherein a length, L, of the pattern surface extends in the cross direction across a plurality of elastic strands of first and/or second elastic laminates. And the partially melted portion of the substrate layers of the first and second elastic laminates and the plurality of elastic strands are then bonded together by being compressed between the pattern surface and the anvil roll.