Provided is a bag making and packaging machine capable of accurately detecting, with a simple configuration, the timing at which an article that is dropped and supplied from an article supply device disposed above the bag making and packaging machine, will arrive at a lateral sealing mechanism. A bag making and packaging machine receives articles dropped and supplied from a combination weighing machine disposed above the bag making and packaging machine and packages the articles in a bag to be made. The bag making and packaging machine includes a lateral sealing mechanism, a servo motor, and a falling time detector. The lateral sealing mechanism laterally seals a packaging material of a cylindrical shape. The servo motor drives the lateral sealing mechanism.

An improved induction sealing device is presented. The device comprises a main body (302, 402a, 402b), a magnetic field concentrator (306, 406a, 406b) held in the main body and a conductive element (304, 404a, 404b) also held in the main body (302, 402a, 402b). The magnetic field concentrator (306, 406a, 406b) is injection molded in said main body (302, 402a, 402b). For this purpose the main body (302, 402a, 402b) is provided with at least one hole (312a, 312b) to gate material for forming said magnetic field concentrator (306, 406a, 406b) into an interior of said main body (302, 402a, 402b).

Methods and apparatus for introducing a modified atmosphere into a package and sealing that package with a film are disclosed. Cooperating upper and lower bell members having internal volumes in fluid communication with one another via a duct configured to cause sequential pressure differentials between the volumes permit the sealing film to be controllably retracted from and applied to outflow holes so as to allow evacuation of ambient air using a single constant vacuum source, rather than requiring precision timing controls and/or multiple vacuum sources. Another dedicate circuit introduces the modified atmosphere into the package, and a sealing unit such as a heat welder subsequently seals the film against the package.

Certain implementations provide a form-fill-seal machine that can efficiently seal a packaging material. The transverse sealing unit may have first members to sandwich the packaging material and sealing the packaging material in a transverse direction, and second members for squeezing the packaging material while sandwiching the packaging material with a prescribed gap left therebetween. The control unit may cause the packaging material to be squeezed by the second members by causing the transverse sealing unit located at a reference position to descend faster than the packaging material being conveyed downward. The control unit may cause the transverse sealing unit to ascend while the packaging material is being sealed by the first members. The control unit may cause the transverse sealing unit to move such that the first members are separated from the packaging material.

An improved induction sealing device (300) is presented. The device (300) comprises a main body (302), a magnetic field concentrator (306) held in said main body (302) and a conductive element (304). One or several protrusions (314a, 314b) of said magnetic field concentrator (306) cooperate with one or several indentations or openings (312a, 312b) in said main body (302) such that said magnetic field concentrator (306) and said main body (302) is securely bonded together.

A method and apparatus for sealing a plastic enclosure is provided. The apparatus includes a handle including elements pivotally coupled together at a first end. The apparatus also includes a heating element positioned along an inner surface of an element and connected to a power source where a longitudinal axis of the heating element is oriented parallel with a longitudinal axis of the element. Plastic material including first and second plastic layers is positioned at an interface between the second elements. Upon pivoting the first elements from an open position to a closed position the heating element increases a temperature at the interface to melt the plastic material and form a seal between the first and second plastic layers.

A method for welding two hollow profiled rods made of plastic to form a window frame. The profiled rods to be joined together are heated to a predetermined temperature by inserting a welding plate between their connecting surfaces and pressing the same against the welding plate, forming outer and inner beads, and the profiled rods are pressed together under pressure after removing the welding plate, with a simultaneous increase in the size of the weld bead. For all cross sections of the profiled rods and the plastics used for manufacturing the window frames, to obtain a type of shadow groove on the top side and/or front side and on the bottom side and/or rear side of the finished window frame in the area of or near the connecting sites of the finished window frame, only the outer beads formed on the visible surface of the subsequent window frame in the area of or near the connecting sites of the two profiled rods are pressed slightly inward after removing the welding plate forming an oblique edge, and then are removed together with the inner beads, and then the connecting surfaces of the two profiled rods are joined together.

A method can fill a flexible tubular-bag packaging with a filler that contains a coarse material and can close the tubular-bag packaging. The method includes: (a) introducing a filler into a tube, (b) displacing the filler out of a closure zone of the tube, (C) pinching-off the tube in the closure zone, (d) substance-to-substance joining of oppositely disposed regions of the tube in the closure zone to form closed ends of successive tubular bags, (e) separating a tubular bag from the tube, such that two ends of successive tubular bags produced by cutting of the tube are each closed by substance-to-substance bonding.

The present disclosure provides an apparatus for forming a stream of individual packets, comprising a folder arranged to form a tubular web structure, a feeder arranged to feed the formed tubular web structure to a nip; a first rotor comprising a first sealing jaw and a knife, a second rotor comprising a second sealing jaw and an anvil, the sealing jaws, the knife and anvil rotating into opposing relation at the nip so as to form a severed, completed packet beyond the nip. The apparatus includes an open ended packet catcher adjacent the first and second rotors, which is arranged to catch the severed, completed packets beyond the nip whereby a stream of packets is established. The packet catcher includes a stripper disposed in a proximal location to at least one of the anvil, the knife and the sealing jaws when the anvil, the knife and/or the sealing jaws are rotated beyond the nip, whereby, should a completed packet stick to any of the anvil, the knife and/or the sealing jaws, the stripper is operative to free the stuck packet from the anvil, the knife and/or the sealing jaw. The present disclosure provides a fin sealer and method to seal a radially outwardly directed fin of a tubular web structure by directing the fin through a nip between a first and a second fin sealing rollers while communicating heat to the fin through at least one of the fin sealing rollers, the fin sealer being further arranged to maintain a nominal face-to-face relation between an outer annulus of the first fin sealing roller and an outer annulus of the second fin sealing roller with a flexible connection between a hub element of the second fin sealing roller with the outer annulus of the second fin sealing roller. A cooling system is also provided, which is operative upon one of the rotors of a cut and seal station.

Provided is a device (400) for forming a pouch. The device can include a first sealing section (404) having a curved heat-transfer surface, and a second sealing section (406). The second sealing section (406) can include a first heat-transfer surface (407), a second heat-transfer surface (405), and a heated cutter (408). The heated cutter (408) can be disposed between the first heat-transfer surface (407) and the second heat-transfer surface (405). The device can also include an optional cutting face that accepts the heated cutter.