A jaw assembly (10) that receives a tubular bag material (11) that is transversely sealed and transversely cut by the jaw assembly (10) to form bags 12 of snack food. The tubular bag material (11) is delivered in a downward direction (13). The jaw assembly (10) includes sealing jaws (27, 28), with the jaws (27, 28) operating in pairs to transversely seal the tubular bag material (11). Each of the jaws (27,28) has an end surface (29) that heats and engages the tubular bag material (11), to form the seal therein. Each surface (29) is spaced from its respective rotational axis by a radius (31). Most preferably the radius (31) is less than 85 mm, but greater than 65 mm.

A system for packaging a product into separate bags, including a station for providing a partly closed bag and adding a quantity of the product into the partly closed bag, a closing station for closing the partly closed bag with the quantity of the product therein, a separating station for separating the closed bag from the sheet-shaped material, and an analyzing station for analyzing the closed bag, where the analyzing station is positioned between the closing station and the separating station and where the closed bag hangs from another bag when analyzed.

A packaging material having a core layer and inside and outside laminate portions is provided. The packaging material comprises a first area to form a first package, and a second area to form a second and adjacent package. The first area and the second area have a transversal sealing area between them, and the core layer is provided with at least one weakening portion at the transversal sealing area.

An induction heat sealing device (300) for providing a transversal sealing of a tube (104) of packaging material, said induction heat sealing device (300) comprising a main body (302) comprising a first and a second sealing surface (314a, 314b) arranged to face the packaging material during a sealing state (S), a recess (308) provided in the main body (308) for receiving a knife during a cutting state (C), wherein the first and second sealing surface (314a, 314b) are placed on opposite sides of the recess (308), and an electric conductor arrangement (306a, 306b, 306c, 306d), provided in the main body (302), for inducing eddy currents in the packaging material during the sealing state (S), wherein at least part of the first and second sealing surface (314a, 314b) are inclined and provided with a first and a second top section (316a, 316b), respectively, such that particles in a product held inside the tube (104) are pushed away from a sealing band of the tube as the sealing band is pressed towards the first and second top section (316a, 316b).

An assembly for forming bags, having a belt drive for feeding a film at a film speed to a former shoulder to form a tubular film, a set of jaws movable at a jaw speed to engage and seal a tubular film to form a closed bag, and a sensor assembly to provide a volume signal indicative of a volume of the closed bag, wherein the controller is configured to adjust at least one of the film speed and the jaw speed in response to the volume signal.

A bag-making and packaging machine includes sealing jaws, a horizontal moving device, a vertical moving device, and a control unit. The sealing jaws perform a transverse sealing operation. The vertical moving device moves the sealing jaws in a vertical direction. The vertical moving device includes a rotating shaft, a motor, and a link mechanism. The link mechanism transmits rotational force of the rotating shaft to the sealing jaws. The control unit performs first control or second control. The first control forwardly rotates and reversely rotates the rotating shaft during a period of time from a start of the transverse sealing operation to a start of a subsequent transverse sealing operation. The second control performs one of the transverse sealing operation and the subsequent transverse sealing operation with a forward rotation of the rotating shaft and the other with a reverse rotation of the rotating shaft.

A bag-making and packaging machine includes sealing jaws, a horizontal moving device, a vertical moving device, and a control unit. The sealing jaws perform a transverse sealing operation. The vertical moving device moves the sealing jaws in a vertical direction. The vertical moving device includes a rotating shaft, a motor, and a link mechanism. The link mechanism transmits rotational force of the rotating shaft to the sealing jaws. The control unit performs first control or second control. The first control forwardly rotates and reversely rotates the rotating shaft during a period of time from a start of the transverse sealing operation to a start of a subsequent transverse sealing operation. The second control performs one of the transverse sealing operation and the subsequent transverse sealing operation with a forward rotation of the rotating shaft and the other with a reverse rotation of the rotating shaft.

A modular stand-alone ultrasonic bag sealing system has an ultrasonic sealer assembly that utilizes a sonotrode and an anvil that are actuated together to form a bag seal in a bag configured therebetween. The system also has an integral control system that is physically configured on the housing of the system and runs a control software. The control software is configured to control the ultrasonic sealer assembly to close and open to seal bags. The controller may have a plurality of signal inputs for receiving input signals from a bag feeder assembly or from an auxiliary machine. The system may also have an integral bag feeder assembly that has an index roller for feeding a bag to the ultrasonic sealer assembly. The system is configured for quick integration into a process line and has versatility of communication through the control software and signal inputs and outputs.

The film sealing and wrapping machine with a rotary cut and seal jaw is provided. The rotary cut and seal jaw has an internal sliding mechanism which provides for smooth and quiet operation. The rotational speed of the jaw may be varied to increase through put and to provide for a title bag around products. The rotary cut and seal jaw may comprise a seal bar and pressure pad may both be spring loaded to self align the seal bar and pressure pad during the sealing and cutting process. Lastly, a gap defined by a belt disposed upstream and downstream of the seal bar and pressure pad may be mechanically linked to the pressure pad through a control carriage.

A packaging material having a core layer and inside and outside laminate portions is provided. The packaging material comprises a first area to form a first package, and a second area to form a second and adjacent package. The first area and the second area have a transversal sealing area between them, and the core layer is provided with at least one weakening portion at the transversal sealing area.