Abstract: A closure for bottles is disclosed which includes an internal radius support disk or cylinder for positioning within the bottle mouth to enable the bottle to resist radial inward deformation when subjected to pasteurization or other post-bottling heat treatment. The closure can be formed by coining a conventional aluminum roll-on cap blank using a pressure block having a central land projectable into the mouth of the bottle to form the support disk or cylinder from the top of the cap blank.

Abstract: This relates to press-on closure assemblies for containers. It is known to provide containers which are formed of plastic or glass with a neck finish including an end sealing surface and a recessed, generally cylindrical, but possibly tapered, surface disposed between two opposed axially spaced shoulders. A separately formed insert is pressed over the neck finish and positioned between the two shoulders in opposed relation to the recessed surface of the neck finish. The insert has lugs or threads for interlocking engagement with a closure which may be removed by rotation. The closure and the insert are preassembled and pressed onto the container neck finish with a gasket or sealing material carried by the closure engaging the end sealing surface. The past problem is the rotation of the insert relative to the container neck finish, thereby preventing removal of the closure.

Abstract: The present invention relates to a glue-free method for sealing closures to paperboard food containers, and also to the novel closures for such method. The present invention is particularly applicable to containers for moisture sensitive food items such as salt, and is characterized in the use of a thermoplastic vinyl chloride ethylene copolymer which functions both to provide a heat seal and effective resistance to moisture vapor transmission. The copolymer has sufficient slip to permit handling of the closures in automatic forming and heat sealing equipment.

Abstract: The invention relates to the fitting of a metal closure on a vessel of which the circular edge is a rigid beaded lip.The method of this invention starts with a closure blank (1) of which the edge (14) has been bent through less than 180.degree., a thick elastic gasket (5) is positioned inside its support section (20), and then, when the closure blank (1) has been positioned under a centering press (7), it is shaped, it is fitted under the beaded lip (4) of the vessel and it is sealingly tightened in a single operation, by the movement of an annular mandrel (10) or several outer tools of the same function.

Abstract: Apparatus for and method of charging and hermetically sealing a small pressure vessel for confining therein a highly pressurized gas for a shelf life of several years. The vessel has a boss or neck with a very small opening extending longitudinally therethrough defining a fill connection which terminates in a small sharp edged cylindrical lip at its outer extremity into and around which a ductile metal is extruded under pressure for establishing a seal.

Abstract: In a combination of a screw-threaded metal closure cap with a container having an externally screw-threaded neck, of the type in which the closure thread is formed by a thread rolling operation in a blank in situ on the container, one or more interruptions are made in the closure thread to provide a pressure leakage path, through which gas can blow off in the interval between unsealing the container and the release of the closure from the container thread.Complementary notches may be formed in the container thread.The interruptions in the closure thread are conveniently provided by forming the thread by means of a thread roller having one or more notches in its periphery.

Abstract: Bottle cap having an outer peripheral skirt for receipt around the neck of a bottle has an axial end for closing the bottle mouth. The axial end has a central raised portion the bottom periphery of which flanges outward to form a peripheral top collar portion which overlies the thickness of the bottle neck end face with the peripheral wall of the central portion having an o.d. not greater than the inner diameter of the bottle neck portion. The central portion of the top is collapsible vertically downwardly with the peripheral wall convoluting interior of the bottle neck into pressed circumferential engagement with the i.d. to provide an effective 360.degree. seal. Upon removal of the so-collapsed top from the bottle, and attempted closure, the convoluted portion will interfere with the neck wall of the bottle forcing the central portion to project upwardly providing a tell-tale sign that the bottle has been opened.

Abstract: A novel ice cream product container with complementary closure member is disclosed. The container body member is usually of paperboard and formed from an integral blank comprising edge-reinforcing flaps articulated to wall members, which reinforcing flaps are then folded down upon and secured to their respective wall members to provide a reinforced portion of double thickness in the container formed from the blank. This folded-over, reinforced portion is also present in the flat-folded tube produced from the blank, the squared-up tube, the erected container, and finally in the closed and filled package. This folded-over, reinforced portion of double thickness contains defined areas of low resistance adapted to receive lugs formed in a wall of the complementary closure member. The closure member also provides a complementary channel between essentially upstanding and downstanding walls for receiving the reinforced portion of the container walls in frictional engagement therewith.

Abstract: A thin-walled can body having a terminal curled rim at an open end thereof, has this open end closed and sealed by a diaphragm which is first formed into a dished shape by a forming tool which then cuts the dished diaphragm from a web and places it on the open end of the body. The upturned edge portion of the diaphragm is subsequently pressed into adhesion between a heat-sealable layer of the diaphragm and the curled rim, the latter being hot, by a presser tool comprising a mount carrying a spring-loaded pad. The pad is resiliently deformable and applies controlled pressure directly on the diaphragm, thus effecting complete conformity of the latter to any irregularities of the curled rim.

Abstract: A moistureproof package comprising a container and lid characterized in that the lid is attached to the container by means of a primary hermetic seal and is provided with a secondry snap fastener for securing the lid to the container once it has been opened, and further characterized in that the container and lid frame are formed from a single sheet of material enough larger in area than that required to form the container to also form the lid frame.

Abstract: In applying to an externally threaded bottle neck an unthreaded metal closure having a gasket within it, the closure shell is pressed down on the bottle and while the shell is so held the diameter of the upper end of the skirt is reduced at angularly spaced intervals to press the gasket into sealing engagement with a cylindrical sealing surface on the neck of the bottle above the bottle thread and simultaneously to form a band of knurling which can be grasped manually.

Abstract: A machine and process useful for fastening a closure member to a container with an upstanding tubular wall, an end edge of which is folded over onto itself to form a folded-over, reinforced portion of double thickness at that end, the closure member having an upstanding tubular inner wall conforming to the inner surface of the folded-over, reinforced portion and a downstanding tubular outer wall connected thereto and conforming to the outer surface of the folded-over, reinforced portion, thereby forming a tubular channel in which the folded over, reinforced portion is seated in frictional engagement, which comprises a dish-shaped fastening head adapted to be positioned around the closed end of the container between the jaws of a pincer, one end of which comprises a punching point and the other of which comprises an anvil, and a wedge or a wedging toggle arranged to wedge a plurality of said punching points into selected portions of the upstanding tubular inner wall of the channel into the inner surface of the

Abstract: An apparatus for heat sealing composite lids, made of a laminate of a light ductile alloy coated with a layer of thermoweldable plastic material, on glass containers. The apparatus applies, under pressure, a flexible membrane onto said lid while disposed in position on the mouth of a glass container. The membrane is a simple sheet stretchingly supported by its outer periphery on a movably and hingedly supporting frame. The side of said membrane opposite said lid is subjected to a controlled heat flow, thus sealing the lid to the container.

Abstract: A machine and process useful for fastening a closure member to a container with an upstanding tubular wall, an end edge of which is folded over onto itself to form a folded-over, reinforced portion of double thickness at that end, the closure member having an upstanding tubular inner wall conforming to the inner surface of the folded-over, reinforced portion and a downstanding tubular outer wall connected thereto and conforming to the outer surface of the folded-over, reinforced portion, thereby forming a tubular channel in which the folded-over, reinforced portion is seated in frictional engagement, which comprises a dish-shaped fastening head adapted to be positioned around the closed end of the container with an upstanding side wall in contact with the side wall of the closure member and functioning as an anvil, and radially-moveable punching points for punching selected portions of the upstanding tubular inner wall of the channel into the inner surface of the folded-over, reinforced portion against the po

Abstract: The invention provides a method of improving the gastightness of a seal formed between two components consisting of a closure cap applied to seal a container. An ultrasonically vibrating horn is applied to the closure cap to heat the sealing surfaces of the closure cap and container. As the cap and/or container are formed of thermoplastic material, the ultrasonic heating softens the sealing surface of one of the components and causes it to mould into close conformity with the complementary sealing surface of the other component with the effect that the gastightness of the seal between the two is improved. The application of ultrasonic heating energy is discontinued before any significant welding between the two components can occur.

Abstract: In applying an unthreaded metal closure to the threaded neck of a bottle by the use of profiled thread rollers to shape the skirt of the closure shell into conformity with the bottle thread while the shell is pressed down on the mouth of the bottle, the part of the skirt in which the thread is formed is engaged during the thread-rolling operation by at least one plain roll angularly displaced with respect to the thread rollers.

Abstract: A one piece screw type bottle cap, a method of applying it and a method of molding it. The cap includes an internal sealing skirt having a cylindrical portion that seals against the internal surface of the bottle neck. The skirt flares inwardly and terminates at an outwardly extending collar which is bent upwardly before applying the cap to the bottle neck, and which engages the neck to form an additional seal only after the threads of the cap interengage with the threads of the neck.

Abstract: A device for applying a stretch film lid to a cup has a planar stretching member, including a relatively rigid peripheral portion, and a multiplicity of finger elements spaced thereabout and extending inwardly therefrom. The finger elements are readily displaceable from the plane of the stretching member, and define, upon displacement, a passageway configured to permit the cup to pass through. Securing means is engageable with the stretching member to secure a stretch film thereto. When a cup is urged against the stretching member, it displaces the finger elements, thereby defining the passageway, with the finger elements and securing means cooperating to extend the stretch film along a plurality of axes, to permit the application of the stretched film to the cup.

Abstract: A sealed container is formed by positioning a length of heat shrinkable film above the open top of a container, grasping a corner of the film, and heat shrinking the peripheral portion of the film into fluid tight compressive engagement with the upper portion of the container while the film corner is grasped. The unshrunk gripped corner of the film provides a pull tab for removing the closure, when desired. As the peripheral portion of the film is heat shrunk, the remainder of the film is tensioned across the open top of the container, and minute perforations are then formed in the tensioned film to define frangible sections which may be ruptured by a straw when the contents of the container are to be consumed with the closure in place.

Abstract: A method of sealing containers is disclosed in which a glass jar having a small upwardly convex bead on its rim is filled and sealed using a metal foil membrane with a heat seal resin on its undersurface and a plastic snap cap having a material thickness over the bead on the jar of at least twice the height of the bead. The foil membrane is induction heated while high unit pressure is applied against the top of the snap cap to impress the bead on the jar and foil membrane into the plastic of the cap to form the foil membrane over the convex surface on the bead and seal the membrane to the jar.

Abstract: The present invention relates to current sources and, in particular, to a method for sealing current sources, preferably of a cylindrical shape, with an alkali electrolyte and to devices for carrying same into effect.The method can be realized by a device, comprising a rolling die, a hold-down member adapted to position the plane of the cell cover end face perpendicular to the cell axis and to press said cover towards the cell's central support, a footstep for positioning said cell support during sealing. According to the invention, said footstep is made as a cylindrical socket with a ring projection, or has a shape similar to that of the supporting part of the cell being rolled. The rolling die comprises at least one cone-shaped section and is provided with a stop adapted to limit the motion of the hold-down member into the die.

Abstract: A self-sealing bottle assembly and method of manufacture comprising a glass bottle having an open neck, an annular resilient neck seal disposed on an internal shoulder adjacent the neck opening, a cap of thermosetting plastic material shrink fitted onto the bottle neck to hold the annular seal firmly against the neck shoulder, and a glass sphere captured within the bottle and adapted for internal pressure-sealing engagement with the annular seal.

Abstract: Method of an apparatus for applying a telescoping lid to an open top, filled box or case in which the lid is formed from a flat blank around the case, in which the lid is pressed down on the contents of the case, in which the major flaps of the lid are pressed in against the sides of the case between a ram and a previously lidded case, and in which the minor flaps are pressed in against the ends of the case so as to square up the lid on the case prior to the flaps being secured together. The apparatus includes tucking units for folding the outer end portions of the major flaps of the lid in on the case along vertical fold lines with the tucking units being driven by upward movement of the case being lidded.