A packaging apparatus for packaging objects, in particular for packaging food portions, having a conveying device (10) for transporting a continuous web of a first packaging material (12), in particular of a bottom film, in a transport direction (TR); and having a feed device (14) for feeding a continuous web of a second packaging material (16), in particular of a top film, in the transport direction (TR), wherein the conveying device (10) comprises a first reception shaft (18) for receiving a first supply roll (20) of the first packaging material (12) and the feed device (14) comprises a second reception shaft (22) for receiving a second supply roll (24) of the second packaging material (16); wherein the first reception shaft (18) can be driven by means of a first drive motor (26) to carry out a rotational movement; and/or wherein the second reception shaft (22) can be driven by means of a second drive motor (28) to carry out a rotational movement, with the first and/or second drive motor (26, 28) in particular being a servomotor or servomotors.

A web retractor may include a frame with spaced-apart first and second side walls and a bottom wall coupling together the side walls, the frame defining an opening through the first side wall, the second side wall or the bottom wall, a spool rotatably mounted to and between the first and second side walls and spaced apart from the opening, a web having one end mounted to the spool, the spool being rotatable to take up and pay out at least some of the web, and a web deflector mounted to at least one of the first side wall, the second sidewall and the bottom wall and positioned between the spool and the opening, the web deflector configured to guide the web from the spool out of the web retractor through the opening and to guide the web into the retractor and to the spool through the opening.

A web retractor may include a frame with spaced-apart first and second side walls and a bottom wall coupling together the side walls, the frame defining an opening through the first side wall, the second side wall or the bottom wall, a spool rotatably mounted to and between the first and second side walls and spaced apart from the opening, a web having one end mounted to the spool, the spool being rotatable to take up and pay out at least some of the web, and a web deflector mounted to at least one of the first side wall, the second sidewall and the bottom wall and positioned between the spool and the opening, the web deflector configured to guide the web from the spool out of the web retractor through the opening and to guide the web into the retractor and to the spool through the opening.

Rewinder for making paper logs of paper material including a detection system with optical means adapted to detect, in a succession of predetermined detection times, a succession of diameters assumed in such times by a log being formed in a winding station and a programmable electronic unit which compares the diameters measured by the optical means with a succession of corresponding preset diameters and to calculate a sequence of differences. The processing unit receives a signal relating to the value of the actual diameter of the completed log and determines a parameter related to the trend over time of the differences. Elements for adjusting the thickness of the paper web automatically adjust said thickness if the parameter is between predetermined values.

A control system is provided for a converting line. The converting line has an unwinder for unwinding web material from a roll of web material and at least one independently driven roll for directing the web material unwound from the unwinder to the converting line. The control system has a controller and a tension sensor configured to be arranged downstream of the at least one driven roll. The tension sensor is configured to sense a tension in the web as the web is passed downstream of the driven roll, generate a signal indicative of sensed web tension, and transmit the signal of sensed web tension to the controller. The controller is configured to a generate and transmit to the unwinder a signal to change the speed of the unwinder based upon the tension sensed by the tension sensor.

Rewinder for producing paper logs, comprising a winding station with a first winding roller, a second winding roller and a third winding roller driven by corresponding electric motors, including a detection system capable to detect a succession of diameters of the log being formed in the winding station and a programmable electronic unit connected to the electric motors. The system compares the measured diameters with a succession of corresponding diameters of predetermined value and to calculate a sequence of differences between these values. The electronic unit determines a parameter (a) related to the trend over time of the values. The electronic unit changes the relative speed of the first and second roll depending on the value of the parameter.

A laser machining apparatus includes, a processing chamber, a window disposed in a surface of the processing chamber, a substrate carrier disposed inside the processing chamber and facing the window, a laser irradiator which irradiates a laser onto the substrate carrier through the window, a protector supplier disposed on a side of the processing chamber, a protector retriever disposed on an opposite side of the processing chamber opposite to the side of the processing chamber, and a protector which connects the protector supplier with the protector retriever, where at least a portion of the protector is disposed between the substrate carrier and the window in the processing chamber.

A laser machining apparatus includes, a processing chamber, a window disposed in a surface of the processing chamber, a substrate carrier disposed inside the processing chamber and facing the window, a laser irradiator which irradiates a laser onto the substrate carrier through the window, a protector supplier disposed on a side of the processing chamber, a protector retriever disposed on an opposite side of the processing chamber opposite to the side of the processing chamber, and a protector which connects the protector supplier with the protector retriever, where at least a portion of the protector is disposed between the substrate carrier and the window in the processing chamber.

A roll holder is for a label roll of linerless labels wound in a crosswise manner. The roll holder has: a horizontally arranged spindle, which is held by a stand on at least one side, and a rotatable roll mount, which is oriented in parallel with the spindle, and which is mounted on the spindle. The roll mount is mounted on the spindle in a linearly displaceable manner using at least one linear bearing.

A vertical bag-making/filling/packaging machine (1) comprises: a film supplying portion (5) which lets out a film (F) from a roll (Fr); a bag-making guide (31) which folds the film (F) into a tubular shape and changes a conveying direction downward; a vertical sealing portion (60) which thermally seals side edges of the film (F) to each other in an up-down direction so as to make the film into a tubular shape; a film conveying portion (50) which conveys the film (F) downward; a filling portion (70) which loads a content (X) into an interior of the film (F); a lateral sealing portion (80) which thermally seals the film (F) in a left-right direction so as to make a bag body; a square-bottom sealing portion (90) which expands a bottom of the bag body to a rectangular shape from an inside and then thermally seals the bottom to form a rectangular bottom surface; and a cutter (89) which cuts off the bag body from the film (F).