An apparatus for packaging a stack of goods by shrinking a shrinkable foil covering on it comprises a delivery mechanism for drawing a foil tubing from a roll of tubing which cuts away a piece from the foil tubing and closes the top of that piece by an end weld seam, and a framelike vertically movable shrinking mechanism which heats all sides of the piece covering the stack of goods. To avoid a premature shrinking of the shrinkable foil covering or the foil tubing a nozzle device for making an a...

The apparatus for shrinking a shrinkable cover to enclose a palletted stack of goods comprises a shrinking device, a conveying system for the palletted stack of goods transported past the shrinking device, a lifting device positioned under the shrinking device for raising the palletted stack of goods and a suction device positioned in the vicinity of the lifting device. The lifting device is located astride the path of the conveyor system thereby eliminating below ground conveyors in favor of dr...

An apparatus for shrinking a heat-shrinkable hood over a stack of goods has an upright guide adjacent the hooded stack of goods, an upper frame vertically displaceable on the guide and provided with a heater capable of shrinking the hood and a lower frame below the upper frame, vertically displaceable on the guide below the upper frame, and provided with a heater capable of shrinking the hood. Respective upper and lower drives connected to the frames vertically displace same on the guide indepen...

A protective cover for use on one or more saw blades. An insert can be positioned on the saw blade(s). The cover is formed from a heat shrinking material that is shrunk around the saw blade(s) to provide a thin close fitting cover that protects teeth on the saw blade(s). A tag can be attached to the cover and/or saw blade(s) and/or an insert. The tag has a security device disposed thereon. The tag can be used to hang the saw blade(s) from a display device.

A method for enclosing articles in heat-shrink film and for perforating or slitting the heat shrink film.

Machine for overwrapping baggage (4) suitable for any mode of transport, in particular air travel, and successively comprising, upstream to downstream, a baggage arrival station (1) having an upstream entry conveyor (6) on which the baggage (4) to be wrapped is placed flat and a station (2) for forming a protective tubular enclosure of shrinkable thermo-plastic material over each baggage. The machine comprises an intermediate conveyor (7) for the enclosing operation and a shrinking tunnel oven (...

A machine for packaging products (11) with film (12) made of heat shrinkable material, comprises a body (13) containing a lower portion (14) of a shrinkage chamber which houses, wrapped in film (12), a product (11) to be packaged, and a cover (16), hinged to said body (13) and defining an upper portion (17) of the shrinkage chamber. Disposed in the shrinkage chamber (14, 17) are a heating unit (22) and a ventilating unit (26, 27) to create air circulation (29, 30, 31) inside said chamber. The ve...

An apparatus and method for controlling the size and shape of a shrink film envelope around an article or a package to prevent the formation of wrinkles and bunching of the film when it shrinks. The apparatus comprises a hot air shrink tunnel having a conveyor for moving the article on packages through the tunnel. An assembly is position within the tunnel a preadjusted distance away from the article forming a fixed boundary to which the film envelope expands and is restricted, causing the air wi...

The invention provides an apparatus and method for shrinking portions of a shrinkable film beneath leading and trailing transverse end seams of a film wrapped product. First and second controllable sources of heated fluid are connected to first and second nozzles positioned beneath a conveyor on which the film wrapped product is conveyed. The nozzles are arranged to travel back and forth below the conveyor and their travel is timed such that the heated fluid from the first nozzle heats only the ...

The invention provides an endless conveyor having a pair of gaps in its product conveying surface. As a film-wrapped product is conveyed across the gaps, a sensor aligned with the second gap signals the initiation of a shrinking sequence by which a pair of upwardly directed nozzles impinge hot air on the portion of film below and inboard of the transverse film seals. As the flow of hot air begins, a pair of magnetic clutches are activated to transmit power from a drive to a pair of shafts on whi...