Abstract: A static sealer for causing overlapping portions of film to adhere to each other preparatory to shrink-wrapping in an automatic wrapping machine comprising a grounded support having a planar surface and a charging head for generating an electrostatic field between the gounded support and charging head through which the overlapping portions of the film are moved rectilinearly to charge the latter oppositely, said grounded support being so designed as to reduce frictional resistance of the overlapping portions of the film to rectilinear tracking, said charging head being provided with discharge electrodes arranged with at least one electrode positioned medially of the path of travel of the seam and two other transversely-spaced electrodes downstream of the medially-positioned electrode.

Abstract: A packaging method and apparatus are disclosed. Two separate streams of bags are formed. The successive bags of each stream are alternately deposited on two side-by-side tracks of a conveyor, thus obtaining four partial streams of bags which are then successively conveyed to filling, sealing and discharge stations.

Abstract: There is described a label-packing device comprising a slit provided in the label-traversing path downstream of a separating device for feeding the packing material underneath the label column, a separating member comprised of a retaining element for the labels upstream of the separating device and a spacing element to push the label downstream to form a space between the labels and to uncover the packing material in the space thus formed, a member for inserting a U-shaped inset element through said traversing path, said inset element having two side cheeks equally spaced from the formed space and folding the packing material back upwards.

Abstract: The machine includes a roll case for positioning and conveying a package to be wrapped into position. In the first position, paper is folded along the front of the package and stapled. The package is then conveyed to a second position during which time the paper is dispensed onto the top and two sides of the package and stapled along the sides. After the package comes to rest in its second position, the paper is cut, folded and stapled along the back side of the package to produce a package which is neatly wrapped with paper on its top and four sides.

Abstract: A synchronized wrapping machine which receives a series of articles to be wrapped and forms and heat seals a wrap of heat sealable material around each article. The incoming articles are longitudinally aligned and are thereafter conveyed in preselected spaced relation into a tube continuously formed of longitudinally overlapped heat sealable material, with the tube thereafter being heat sealed together and severed intermediate adjacent articles. The overwrapped articles are engaged by upper and lower article carrier holding cups and are transported longitudinally between upper and lower indexing conveyors which drive the article carriers. During traverse of the indexing conveyors, the overwrapped articles are turned 90.degree. by the article carriers and the severed ends of the wrapping are tucked and folded before engagement with an end sealer which heat seals the ends together.

Abstract: Apparatus for wrapping articles in heat sealed thermoplastic stretchable film consists of a first conveyor for carrying an article forward while progressively enclosing it with film drawn from a film supply, joining the margins of the film together to enclose the article in an elongated tube of film, cutting the film so as to provide equal amounts of excess film at each end of the article, using a vacuum inlet to pull the trailing portion of film to one side of the article so that a transverse rod, moving faster than the article, can fold the trailing portion against one side of the article, folding the leading portion of film against the same side by means of a roller, and finally moving the article into contact with a heated belt to seal the film.

Abstract: A packaging machine for making sealed packages with articles contained therein includes seal bars and anvils mounted for relative rotation along circular paths so that both the seal bars and the anvils maintain their orientation in space constant. Resilient mounting of the seal bars and anvils allows for extended contact time with a thermoplastics web which forms the packages. The seal bars and other parts of the machine may be driven by a common variable speed motor through a drive chain which maintains constant speed ratios between the operative parts. The accuracy of the sealing may be improved by clamps mounted on the seal bar assembly which cooperate with the anvils to hold the web while sealing and cutting take place. The seal bar assembly may include two seal bars, one of which cuts and seals to form an edge of a package and also forms a handle cut-out and the other seal bar forms a transverse seal to seal off a main portion of the bag from a handle cut-out portion.