Abstract: This relates to the double seaming of an end unit to a metal can body where the end unit is of the full opening, easy opening type incorporating a pull tab for the purpose of initiating a rupture followed by pull out of an end panel of the end unit. Most specifically, the end unit is of an oblong rectangular or generally other than round outline so as to have a fixed orientation with respect to a double seam forming double seaming chuck. By having a fixed relationship between each end unit and the double seaming chuck and the pull tab with respect to the configuration of the end unit, it is possible to form a notch in the underside of the double seaming chuck to clear the pull tab. This permits the pull tab to have a force applying nose thereof positioned closely adjacent to a chuck wall of the end unit so that it may overlie a score line or weakening line formed in the chuck wall radius between the chuck wall and the end panel.

Abstract: A flange assembly of a molded plastic container which is multi-sided. Each side terminates at its upper edge in the flange assembly and the flange assembly includes an inner support flange to which a closure may be bonded. Outwardly of the support flange is an upstanding shock absorbing bead which additionally functions to center the closure on the container. The bead includes an inner leg which is integrally connected to the support flange and an outer leg with the inner leg being joined to the outer leg by a deformable bight portion. When dropped on the side, the package formed of the closed container will have the shock of the impact of striking a surface, such as a floor, absorbed by the deformation of the bead.

Abstract: A modular type replaceable heating unit with a downwardly facing heating ring for use in an apparatus for sealing a flat lid with a lower layer of heat bondable material onto the upper, generally flat surface of a flange extending around the periphery of an access opening in a container. The apparatus moves the heating unit between first and second positions. The apparatus includes a generally fixed high frequency power supply for energizing the heating ring, connecting the high frequency power supply to the heating ring only while the heating unit is moving between the first and second positions. The ring is forced against the lid as the power supply is energized and is released from the lid after the power supply has been de-energized. Preferably the ring is an inductor. A plurality of these heating units is carried by a turret to define individual heating stations on the turret which stations rotate to selectively energize the individual heating units.

Abstract: A method and apparatus for sealing a flat lid with a lower layer of heat bondable material onto the upper, generally flat surface of a flange extending around the periphery of an access opening in a container of the type used to store a substance subsceptible to deterioration when exposed to atmosphere for a prolonged time such as prepared foods, which method and apparatus moves a separate and distinct heating unit with a downwardly facing heating ring in a preselected path, preferably circular in shape, between first and second positions, includes a generally fixed high frequency power supply for energizing said heating ring, connects this fixed high frequency power supply to the individual heating rings of the moving heating unit only when the unit is moving between the first and second positions, and energizes the power supply only while the heating unit is moving between the first and second positions.

Abstract: A box of the wrap around type for bottles and like products. The box is readily formed from a substantially rectangular blank while maintaining a bottom panel thereof in a flat state and folding front and rear panels upwardly with the front and rear panels carrying end forming panels which, when joined together, complete the box. The bottom panel will also have at opposite ends thereof end forming panels which either may be full height and tucked between the end forming panels carried by the front or rear panels, or in the form of glue flaps which will be disposed externally of the end forming panels carried by the front and rear panels.

Abstract: A method and apparatus for sealing a flat lid with a lower layer of heat bondable material onto the upper, generally flat surface of a flange extending around the periphery of an access opening in a container of the type used to store a substance susceptible to deterioration when exposed to atmosphere for a prolonged time such as prepared foods, which method and apparatus moves a separate and distinct heating unit with a downwardly facing heating ring in a preselected path, preferably circular in shape, between first and second positions, includes a generally fixed high frequency power supply for energizing said heating ring, connects this fixed high frequency power supply to the individual heating rings of the moving heating unit only when the unit is moving between the first and second positions, and energizes the power supply only while the heating unit is moving between the first and second positions.

Abstract: This relates to a container having a neck finish which is provided with threads for receiving a closure and wherein the threads are blow molded in the formation of the container from a tubular parison. It has been found that in the blow molding of the threads, there is a thinning of the wall of the neck finish at the roots of the threads and under certain circumstances, when a closure is applied at a high torque, there is an axial collapse of the neck finish rendering the container unfit for use. The problem of axial collapse of the neck finish is overcome by interrupting the threads so as to provide axial beam strength at circumferential intervals around the neck finish.

Abstract: A method and apparatus for sealing a flat lid with a lower layer of heat bondable material onto the upper, generally flat surface of a flange extending around the periphery of an access opening in a container of the type used to store a substance susceptible to deterioration when exposed to atmosphere for a prolonged time such as prepared foods, which method and apparatus moves a separate and distinct heating unit with a downwardly facing heating ring in a preselected path, preferably circular in shape, between first and second positions, includes a generally fixed high frequency power supply for energizing said heating ring, connects this fixed high frequency power supply to the individual heating rings of the moving heating unit only when the unit is moving between the first and second positions, and energizes the power supply only while the heating unit is moving between the first and second positions.

Abstract: This relates to the mounting of a sealing head for sealing a plastic lid in a plastic container by way of induction heating. In order that a sealing head may be readily removed and replaced by a like sealing head for cleaning and repair, there is provided a quick detachable coupling between the sealing head and a support which is carried by a movable positioner for vertically positioning the sealing head. Further, there is associated with the support a supply unit which supplies to the sealing head electrical energy for an induction heating coil and for a gas detector. In addition, there is supplied to the sealing head from the supply unit two separate vacuum supplies and an inert gas supply with one of the vacuum supplies serving to hold a lid in place on the underside of the sealing head and the other vacuum supply serving to evacuate the container prior to the lid being applied thereto. The inert gas supply is provided to supply an inert gas to an evacuated container prior to sealing.

Abstract: This relates to special tooling for forming metal end units for use in conjunction with cans for carbonated beverages and the like wherein the formed end unit is provided with an integral reinforcement in the form of a countersink so as to increase the buckle strength of such an end unit when it is formed of thin metal. Previously there has been developed tooling for forming such an end unit which, while it is commercially satisfactory, did not produce end units having the required buckle resistance. That tooling has been modified by changing the configuration of a punch core so as to eliminate a previously formed cylindrical extension of the end unit chuck wall and a countersink starter. The punch core cooperates with a die core to clamp a center panel of a formed end unit shell so as to move the center panel reversely of its forming direction and to effect a folding of an outer peripheral portion of the center panel in a lower part of the previously formed chuck wall into the required countersink.

Abstract: This relates to a rotary switch and rotary valve assembly for a multiple work station machine wherein the work stations rotate and are sequentially presented to an operating position. There may be a high voltage switch and two low voltage switches with the switches being so constructed wherein electrical connections are made with each work station in timed relation to its presentation to the work position and for the required period of time. Further, the rotary valve assembly functions in sequence to present operating fluids to each work station in the order of presentation of such work station to its operating position and in timed sequence to the operation performed thereby.

Abstract: This relates to a nest for receiving a container which is to be filled and thereafter have a lid applied thereto with the lid being sealed to the container by a sealing head in conjunction with the nest. Most particularly, there will be a plurality of such nests with the nests being carried by an endless conveyor chain. The endless conveyor chain is provided with special links which are elongated and wherein an upper one of each set of elongated links is adapted to have seated thereon a nest in supporting relation. Further, the chain links are connected together by customary pins which have been elongated so as to project upwardly above the chain. In conjunction with these projecting pins, the nest is provided with bores which receive the pins. Thus the nest may be readily placed on and removed from the conveyor chain. Each nest is in the form of a housing which defines a cavity for a container. An upper part of the cavity carries a seat member over which a flange of a container is engaged.

Abstract: This relates to a compact control valve assembly which is particularly intended to be mounted for controlling and operating a station of a multiple station machine such as a container closing machine. The compactness of the valve assembly is made possible by forming a required manifold of an L-shaped configuration including a base and an upstanding part. A first control valve is mounted on the rear wall of the upstanding part to control the flow of fluid through the manifold. Other control valves are mounted on the top wall of the base of the manifold and clamped against a front wall of the upstanding part of the manifold for controlling other operations. By making the manifold L-shaped and fitting the other control valves therein, the entire valve assembly is a compact unit.

Abstract: This relates to a positioning device for positioning a member relative to a work piece. In the preferred use of the positioning device, a sealing head is carried by the positioning device with the sealing head having a first lowered position for picking up a lid for a container and a second lowered position for positioning the lid and thereafter bringing the lid into pressure engagement with an associated container and effect the heat sealing of the lid to the container. The positioning device includes an extensible fluid motor of the piston and cylinder type which is mounted within a guide sleeve for selective vertical positioning by way of a cam follower and cam track and which extensible fluid motor is further selectively extensible so as to further move an associated member carried thereby downwardly and into resilient clamping engagement with the work piece.

Abstract: This relates to the construction of a pull tab integrally formed on a closure which is bonded to a container by way of a rupturable bond. Instead of utilizing the conventional pull tab which is normally integrally connected to the closure, the pull tab has been modified so as to provide two or more lines of bond rupturing forces as opposed to the prior art original single line with the two or more lines of bond rupturing forces having a tendency to spread in opposite directions and thereby greatly reducing the force required to initiate a rupture of the bond between the closure and the container. Numerous different types of notches, openings and the like are provided to provide for the separate lines of bond rupturing forces. These notches, openings and the like also function to constrain stray electric current induced into an intermediate metal layer of the closure and pull tab flowing into the pull tab, thereby reducing the power requirement for heating the closure to a bonding temperature.

Abstract: A multilayer plastic sheet adapted for the manufacture of containers for food products to be cooked or reheated in microwave ovens is disclosed wherein the sheet has at least one layer of a propylene polymer composition bonded to the surface of a styrene polymer layer, the propylene polymer layer having incorporated therein about 20 to about 40 percent by weight of an inorganic filler such as talc, the filled propylene polymer and the styrene polymer layer having a melt flow substantially equal to the other and the thickness of the layers being at a ratio of from about 60:40 to about 40:60.

Abstract: This relates to a rotary switch and rotary valve assembly for a multiple work station machine wherein the work stations rotate and are sequentially presented to an operating position. There may be a high voltage and two low voltage switches with the switches being so constructed wherein electrical connections are made with each work station in timed relation to its presentation to the work position and for the required period of time. Further, the rotary valve assembly functions in sequence to present operating fluids to each work station in the order of presentation of such work station to its operating position and in timed sequence to the operation performed thereby.

Abstract: This relates to a container and pump unit where the container is formed with an integral liquid product supply tube in lieu of the usual dip tube carried by the pump unit and wherein there is a special connector arrangement for connecting a conventional type of pump unit, but modified, to such container. The container is provided with a smooth sealable end surface and the connector assembly includes a gasket which closes off the dual passages at the container mouth with there being a seal plate which engages the gasket and provides a liquid product delivery passage and a vent passage. These two passages are separately connected to the pump unit.

Abstract: A powder stripe application system wherein substantially all powder introduced into the system is applied to side seam areas of can bodies with that powder which is not initially bonded to a can body being directly recycled within the system. The system includes a delivery nozzle which has an adjustable mounting which permits the powder stream to be positioned as desired.

Abstract: This relates to a container and pump unit where the container is formed with an integral liquid product supply tube in lieu of the usual dip tube carried by the pump unit and wherein there is a special connector arrangement for connecting a conventional type of pump unit, but modified, to such container. The container is provided with a smooth sealable end surface and the connector assembly includes a gasket which closes off the dual passages at the container mouth with there being a seal plate which engages the gasket and provides a liquid product delivery passage and a vent passage. These two passages are separately connected to the pump unit.