Described is a compensating device applicable on intermittent advancement packaging machines with wrapping material constituted by a film made of a flexible plastic material, for continuous compensating of a stretching of the film during drawing thereof, the machine comprising a first drawing group of the film, a mobile element able to exert a determined force on the film during advancement, the mobile element being conventionally known as a dancer and a second drawing group of the film arranged downstream of the first drawing group, where each drawing group is provided with a sensor for detecting markers located at regular intervals along the film, the compensating device being constituted by a third drawing group, located between the first and second drawing groups, the third drawing group being provided with a marker sensor, the third drawing group being provided with independent motorisation and an automatic roller opening system.

Described is a compensating device applicable on intermittent advancement packaging machines with wrapping material constituted by a film made of a flexible plastic material, for continuous compensating of a stretching of the film during drawing thereof, the machine comprising a first drawing group of the film, a mobile element able to exert a determined force on the film during advancement, the mobile element being conventionally known as a dancer and a second drawing group of the film arranged downstream of the first drawing group, where each drawing group is provided with a sensor for detecting markers located at regular intervals along the film, the compensating device being constituted by a third drawing group, located between the first and second drawing groups, the third drawing group being provided with a marker sensor, the third drawing group being provided with independent motorisation and an automatic roller opening system.

A cushion package can be formed around an object. The object can be removed from and reinserted into the cushion package. The cushion package includes a cushion material (104) having a longitudinal length and two longitudinal edges (110). The two longitudinal edges (110) of the cushion material are folded into an overlapping position to form a tube of the cushion material. The cushion package includes first and second transverse seals (148,150) in the tube of the cushion material. The first and second transverse seals (148,150) respectively form first and second ends of the cushion package. Each of the first transverse seal and the second transverse seal (148,150) seals the cushion material with the two longitudinal edges (110) in the overlapping position. The two longitudinal edges (110) of the cushion material are uncoupled between the first transverse seal and the second transverse seal (148,150).

A cushion package can be formed around an object. The object can be removed from and reinserted into the cushion package. The cushion package includes a cushion material (104) having a longitudinal length and two longitudinal edges (110). The two longitudinal edges (110) of the cushion material are folded into an overlapping position to form a tube of the cushion material. The cushion package includes first and second transverse seals (148,150) in the tube of the cushion material. The first and second transverse seals (148,150) respectively form first and second ends of the cushion package. Each of the first transverse seal and the second transverse seal (148,150) seals the cushion material with the two longitudinal edges (110) in the overlapping position. The two longitudinal edges (110) of the cushion material are uncoupled between the first transverse seal and the second transverse seal (148,150).

The packaging machine includes a wrapping tunnel, adapted to form a tube of plastic film around a group of articles and a feed conveyor adapted to feed articles to be packaged toward the wrapping tunnel. An elevator is positioned between the feed conveyor and the wrapping tunnel, and is movable vertically from a lower position, to receive articles coming from the feed conveyor, to a higher height, to transfer articles to the wrapping tunnel. A pusher is arranged to push articles to be packaged from the elevator into the wrapping tunnel. An auxiliary conveyor is also provided between the feed conveyor and the elevator. An upender is associated with the auxiliary conveyor, adapted to be arranged selectively in an active position, to co-act with the auxiliary conveyor to upend articles coming from the feed conveyor and transfer them toward the elevator, and in a deactivated position.

The packaging machine includes a wrapping tunnel, adapted to form a tube of plastic film around a group of articles and a feed conveyor adapted to feed articles to be packaged toward the wrapping tunnel. An elevator is positioned between the feed conveyor and the wrapping tunnel, and is movable vertically from a lower position, to receive articles coming from the feed conveyor, to a higher height, to transfer articles to the wrapping tunnel. A pusher is arranged to push articles to be packaged from the elevator into the wrapping tunnel. An auxiliary conveyor is also provided between the feed conveyor and the elevator. An upender is associated with the auxiliary conveyor, adapted to be arranged selectively in an active position, to co-act with the auxiliary conveyor to upend articles coming from the feed conveyor and transfer them toward the elevator, and in a deactivated position.

The packaging machine includes a wrapping tunnel, adapted to form a tube of plastic film around a group of articles and a feed conveyor, adapted to feed articles to be packaged toward the wrapping tunnel. An elevator is positioned between the feed conveyor and the wrapping tunnel, and is movable vertically from a lower position, to receive articles coming from the feed conveyor, to a higher height, to transfer articles to the wrapping tunnel. A pusher is arranged to push articles to be packaged from the elevator into the wrapping tunnel. An auxiliary conveyor is also provided between the feed conveyor and the elevator. An upender is associated with the auxiliary conveyor, adapted to be arranged selectively in an active position, to co-act with the auxiliary conveyor to upend articles coming from the feed conveyor and transfer them toward the elevator, and in a deactivated position.

A working process of a machine for wrapping products in packages, carried out with a thermoplastic material film from a reel, comprising: a loading station for the products to be packaged; a hollow mandrel with a relative forming shoulder; a sealing device for forming a seal of the longitudinal edges of the film; a horizontally mobile pusher for pushing a bundle of products from the loading station through the mandrel; a sealing and transversal cutting assembly formed by two vertically mobile elements mounted on a horizontally mobile primary carriage a conveyor a secondary carriage carried by the primary carriage; comprising the following operating steps: reducing the transversal section of the mandrel to a diameter smaller than the diameter of the bundle of products positioning the sealing device in a position for sealing the overlapped longitudinal edges of the film while forming a new tubular film casing; arranging the elements of the assembly in a closure position on the head portion of the new tubular film casing and on the tail portion of the tubular film casing of a finished package; and conveying of said new tubular film casing, by the movement of the primary carriage away from the mandrel, and repeating the preceding steps, so that the product placed inside the tubular casing by the mandrel is wrapped in a tight adherent manner due to the elastic retraction of the film of tubular casing.

A medicine packaging apparatus 10 has a packaging paper supplying part 42; a sealing device 50 for forming a packaging bag; a medicine introducing part 80 for introducing the medicines M from an opening portion of the packaging bag P in an unsealed-state; a detecting part 90 for detecting presence of the medicines M in an introducing path for the medicines M by the medicine introducing part 80 and a determining part which can determine that a packaging failure occurs under a condition that the presence of the medicines M is detected by the detecting part 90 within a time period after a timing of starting to seal the packaging bag P in which the medicines M have been introduced and before a timing of introducing the medicines M to be packaged in a subsequent packaging bag P through the medicine introducing part 80.

A medicine packaging apparatus 10 has a packaging paper supplying part 42; a sealing device 50 for forming a packaging bag; a medicine introducing part 80 for introducing the medicines M from an opening portion of the packaging bag P in an unsealed-state; a detecting part 90 for detecting presence of the medicines M in an introducing path for the medicines M by the medicine introducing part 80 and a determining part which can determine that a packaging failure occurs under a condition that the presence of the medicines M is detected by the detecting part 90 within a time period after a timing of starting to seal the packaging bag P in which the medicines M have been introduced and before a timing of introducing the medicines M to be packaged in a subsequent packaging bag P through the medicine introducing part 80.