Abstract: The pack is adapted to store separately and allow mixing of a plurality of components and subsequent dispensing of the mixture. It comprises an outer container (1) and a preferentially rupturable inner container (2) having its outer surface sealed to the inner surfaces of said outer container walls at a median point of the outer container and adjacent an end of said inner container. The wall of said inner container (2) between seals (3) defines a first compartment (9) within said inner container (2) to one side of said seal (3) and a second compartment (7) within said outer container (1) to the other side of said seal (3). A recloseable inlet and outlet means (4,5) communicates with said second compartment (7).

Abstract: Packaging containers which are closed, except for a pinch-type filling valve or filling-opening, are provided with an RF-sealable polymer, at least in the valve or opening, in order to be able to seal the valve or opening using RF frequency. Preferably, polymers which are sealable using MW energy are used, including, preferably, carbon monoxide-containing ethylene polymers.

Abstract: A method of joining two sheets each comprising a metallic foil and heat-sealable material comprises applying heat and pressure to squeeze the heat-sealable material away from a region between the foils so as to provide electrical contact, either directly or by way of an inserted filament, between the foils.

Abstract: A method and apparatus for use in form, fill, and seal machines wherein a polyfoil material is compressed between two jaws, one jaw having a secondary induction coil which passes through an electromagnetic field and induces a current in the metallic layer of the polyfoil, to heat and then seal the polyfoil.

Abstract: The device comprises a support rack having a plurality of trays for supporting in a horizontal position air-impermeable plastic bags containing the products to be sterilized, each bag having an open end which is engaged through one of a plurality of vertically spaced horizontal slits in a vertical face of the support rack, each slit being defined by a pair of sealing bars comprising a fixed bar and a movable bar which can be moved into engagement with the fixed bar to compress and seal the open end of the plastic bag, the movable bar of each pair of sealing bars being actuated by a linear actuator having a direction of movement which is parallel to the longitudinal direction of the sealing bars, and by a conversion mechanism which is arranged for converting the direction of movement of the linear actuator into a movement orientated perpendicularly to the longitudinal direction of the sealing bars and which acts on the movable sealing bar at two longitudinally spaced points thereof, the arrangement being such

Abstract: An improved method for forming closed burstable pouches having breakable seals. The method includes selection of a laminated polymeric film which has two principal layers--an outer layer which is responsive, and an inner layer which is non-responsive, to a radio-frequency (RF) welding field, the inner layer being of a biaxially-oriented polymeric material such that its cohesive strength in its thickness direction is less than the cohesive strength of the outer layer. The outer layer has a higher melting point than the inner layer. With two sheets of such material placed with their inner surfaces in contact, the breakable seal is formed by applying an RF welding field for a time and at an intensity to heat the outer layers sufficiently to fuse the inner layers by heat transfer from the outer layers without melting the outer layers and without destroying the biaxially-oriented structure of the inner layer.

Abstract: An apparatus and method for continuous rotary ultrasonic sealing of form and fill machines to produce packages utilizes a rotary anvil and cutter knife and an ultrasonic horn having adjustable simulated rotary motion movable in synchronism with the anvil for providing an end seal on packages.

Abstract: A cap heat-sealing apparatus for paper containers comprises a vertically movable head, a fixed pressing member provided on the bottom surface of the head, a pair of divided movable pressing members arranged around the fixed pressing member and connected to the head so as to be horizontally movable toward or away from the fixed pressing member, and a heating high-frequency coil attached to the head and surrounding the fixed pressing member. The fixed pressing member has an outer periphery shaped to position along the inner surfaces of heat-sealing container opening edge fitting portions of inverted V-shaped cross section formed at the outer periphery of a square paper cap, which has an aluminum foil layer. The movable pressing members have an inner periphery shaped to position along the outer surfaces of the fitting portions. The high-frequency coil is spaced apart from the fixed pressing member by a clearance for the fitting portions to enter.

Abstract: Apparatus and method for forming sealed joints, including a pouring lip sanitarily protected therein, by welding layers of thermoplastic coated paperboard together. Paperboard layers are pressed together by jaws, with relieved areas where excessive pressure would render pouring lip less satisfactory, while or after heat is applied to said paperboard layers. The apparatus and method is particularly useful for forming sealed joints for paperboard cartons, such as milk cartons.

Abstract: The top of a flexible pouch is sealed when two heated bars are pressed into engagement with opposite sides of the pouch. One of the bars is formed with two angled surfaces which converge into intersecting relation with one another so as to drive moisture from the seal area and enable the formation of a substantially blemish-free seal.

Abstract: An apparatus and method for applying metal foil-plastics material film laminate pull tabs to coated container units. A high frequency electrical energy force field is set up and induced into the metal of the pull tab with the resultant heating of the metal and the subsequent heating of the plastics material film to a bonding temperature together with the application of a magnetic repulsion force to the pull tab urging it away from its supporting head and into forced contact with the container unit.

Abstract: An apparatus for folding and closing to top of folding cartons prefabricated from cut boxboard stock having an inner thermoplastic-resin liner includes a stepwise conveyor for conveying the folding cartons in a row, upright, with the fillet seam of the cartons perpendicular to the direction of travel, and a single folding, pressing and welding station having ultrasonic welding means including a vibratable tip and a folding, pressing and welding tool. The tool includes a pair of jaws and the tip, which are mounted for movement toward each other in the manner of tongs, wherein one of said jaws includes a folding wedge and an anvil above said folding wedge, and the other jaw is configured as a folding and clamping wedge. The jaws and holder are mounted on a common holder for movement into and out of engagement with the fillet seam of each container on the conveyor.

Abstract: Packaging apparatus for closing and sealing the open end of a carton of thermoplastic coated paperboard material or the like. A rotatable drum has a cylindrical wall that supports a plurality of carton closing and sealing units. During rotation of the drum, open ended cartons are successively picked-up at a carton receiving station and are carried by the drum to a carton delivery station. During the movement of the carton from the receiving to the delivery station, the open end of the carton is folded to a closed condition and the layers of the closed carton end are vibration welded together by one of the carton closing and sealing units. Each carton closing and sealing unit includes a pair of jaws movable between an open and closed position with respect to each other, a latching member for locking the jaws in their closed position, and a vibration welding device.

Abstract: A portable dielectric Radio Frequency generator adapted with wheels and a flexible output cable through which a suitable range of Radio Frequency currents pass. A levelable press applies Radio Frequency voltage to a plastic load and is adapted with a set of various shaped quick mounting electrodes and control circuitry. When the generator is moved to a work site, the press is stored in a holding device facilitating ease of transportation. The press provides suitable compressive forces on the electrode system selected by utilizing a spring compressed by a hand operated cam.

Abstract: The invention refers to a method of forming over the edge of a plastic jacket against a workpiece using vibratory energy. Specifically, the workpiece and jacket are disposed on a resiliently mounted anvil. As the jacket forms over and shortens its axial length, the anvil is displaced to provide a decreasing engagement force between the jacket and the horn of the vibratory apparatus. As a result, the jacket is free of scars or distortions in the region of forming.