Patents Assigned to Tetra Pak Developpement SA
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Patent number: 4379014Abstract: The invention relates to a method for the manufacture of packing containers. The container body of the packing container is manufactured by spiral winding of a monoaxially molecular-oriented polyester film. The polyester film is spirally wound onto a mandrel to form a tube with the edge zones of successive turns of the strip overlapping in a continuous joint. The material is sealed within the edge zones by means of surface fusion. The invention also relates to a packing container manufactured in accordance with the method.Type: GrantFiled: October 15, 1980Date of Patent: April 5, 1983Assignee: Tetra Pak Developpement SAInventors: Anders R. Rausing, E. Ingvar Nilsson
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Patent number: 4373002Abstract: The invention relates to a laminated material, the main layer of which consists of a molecular-oriented polyester material which has very good tensile strength characteristics and a sealing layer joined to the main layer of a modified polyester material of the type which is marketed under the trade name PETG and which retains its sealing characteristics in spite of the laminated material being subjected to a joint molecular-oriented stretching.Type: GrantFiled: July 30, 1980Date of Patent: February 8, 1983Assignee: Tetra Pak Developpement SAInventor: Peter Petersen-Hoj
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Patent number: 4370293Abstract: The present invention relates to a method and apparatus for the manufacture of oriented plastic film, in particular polyester film, by the inflation in two steps of an extruded seamless tube of plastic material. The present invention also relates to the laminate manufactured in accordance with the method.Type: GrantFiled: July 25, 1980Date of Patent: January 25, 1983Assignee: Tetra Pak Developpement SAInventor: Peter Petersen-Hoj
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Patent number: 4367412Abstract: This disclosure is concerned with a process of and apparatus for producing relatively low energy electron beams through pulsed cold-cathode beam generation in a mode of operation involving an important intermediate region of a substantially linear depth-dose profile characteristic that reduces the sensitivity to possible voltage variations, and with improved triggering structures that significantly improve reliability and minimize erratic pulse generation and missing pulses, thus particularly adapting the process and apparatus for such stringent applications as production-line sterilization of surfaces, materials or workpieces passed by the apparatus.Type: GrantFiled: September 16, 1980Date of Patent: January 4, 1983Assignee: Tetra Pak Developpement SAInventor: Richard N. Cheever
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Patent number: 4352421Abstract: An arrangement for the oriented feeding out of caps provided with pull-lugs comprises a disc which rotates at high speed, and onto the planar working surface of which the caps are dropped. By the rotation of the disc the caps are moved to the periphery of the disc where they contact a guide rail in the form of an uninterrupted ring which is arranged at such a distance above the surface of the disc that the cap is allowed to project beneath the guide rail. However, the lug on the cap prevents the cap from wholly passing under the guide rail. At a point along the ring periphery a radially movable feeding out element is provided which engages the passing caps and withdraws them via the space between the disc and the guide rail, with a short-time deformation of the pull-lug.Type: GrantFiled: December 5, 1980Date of Patent: October 5, 1982Assignee: Tetra Pak Developpement SAInventors: Alvar Olsson, Peter Giacomelli
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Patent number: 4331499Abstract: For the purpose of producing a packing container a web of laminated material is used, which material includes a base layer of foamed polystyrene, and two outer layers of homogeneous polystyrene.In order to seal the edge zones of the material web into a tube a part of the base layer of one of the edge zones is removed and the other edge zone is inserted into this cut off part between the remaining end parts of the outer layers and is heat-sealed to the outer layers. The so achieved sealing is tight and durable and superior to the known overlap sealing. The seal is also more pleasing from the aesthetic point of view.Type: GrantFiled: July 25, 1980Date of Patent: May 25, 1982Assignee: Tetra Pak Developpement SAInventors: Finn T. Madsen, Steffen Kjaerbye-Petersen
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Patent number: 4281769Abstract: A packing container with an expanded tubular member is disclosed. The member has a central cylindrical portion and dished end portions. A first of said end portions includes an end wall and a second of said end portions includes an edge ferrule.Type: GrantFiled: August 8, 1979Date of Patent: August 4, 1981Assignee: Tetra Pak Developpement SAInventor: Rolf L. Ignell
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Patent number: 4266698Abstract: A packing container having an outer casing and a package body disposed within the outer casing is disclosed. A wall portion of the package body is folded over and affixed to itself in the folded position, and a thin cutting thread is arranged within the folded wall portion so that the cutting thread is accessible from outside the packing container. Upon being pulled away from the wall portion, the cutting thread cuts through the wall portion to provide an opening in the package body.Type: GrantFiled: September 13, 1979Date of Patent: May 12, 1981Assignee: Tetra Pak Developpement SAInventor: Anders R. Rausing
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Patent number: 4258876Abstract: An opening structure preferably located in a top panel of a one-way packaging container provides a pour opening which can be reclosed after the initial opening. The structure is prepared by positioning and sewing a portion of a strip of web material on the panel, defining a pour opening area within the secured strip portion by applying a cut or weakening line forming a boundary. The pour opening area of the panel is retained in its original position in the panel. Then a second, unsecured portion of the strip is folded back over the first portion to cover the first portion and the pour opening area. Securing zones are produced to secure the second strip portion to the panel both within the pour opening area and a surrounding region to thereby obtain a hermetically sealed opening structure on the packaging container. The pour opening is uncovered by lifting the second strip portion so that the cut-out section of the panel is removed.Type: GrantFiled: April 13, 1979Date of Patent: March 31, 1981Assignee: Tetra Pak Developpement SAInventor: Billy Ljungcrantz
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Patent number: 4243160Abstract: A device for filling an exact quantity of a fluid into packages includes a tubular housing with inlet and outlet fittings on its ends formed with inlet and outlet valve seats. A flexible tubular sheath extends within the housing clamped in sealed relation at its opposite ends to the housing by the fittings. Inlet and outlet valves cooperate with the valve seats to admit fluid into the sheath, to discharge fluid from the sheath, and to prevent flow of fluid medium in reverse direction. A supporting body is located within the sheath and defines with the sheath at least one chamber of precise volume. The interior of the housing exposed to the sheath and the exterior of the body are substantially equal in surface area, and the exterior surface of the body has a plurality of lengthwise extending channels which cooperate with the interior of the sheath to define the chamber.Type: GrantFiled: July 17, 1978Date of Patent: January 6, 1981Assignee: Tetra Pak Developpement SAInventor: Wilhelm Reil
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Patent number: 4243152Abstract: An improved tear-up closing device for a container intended for containing a pressurized liquid (e.g., beer), and intended to form a seal over the opening of the container. The novel closing device comprises two parts, viz., (1) an outer part consisting essentially of a tubular body functioning as a gas-tight closure of the opening of the container, and (2) an inner part which defines a pouring opening of the container, this latter consisting essentially of a sealing body. Said outer and inner parts are joined together along a thin, relatively easily breakable wall.Type: GrantFiled: January 24, 1977Date of Patent: January 6, 1981Assignee: Tetra Pak Developpement SAInventor: Rolf L. Ignell
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Patent number: 4233320Abstract: The invention relates to a method for the processing, sterilization and packaging of a food product starting from a raw material basically consisting of Krill, in order to obtain a protein rich food product with good taste, consistency, structure, preparing abilities and keeping properties. Said method includes the steps of breaking down the whole Krill into small particles, sterilization of the broken down Krill, cooling and grinding the sterilized product into liquid or semi-liquid form and packaging the liquid substance under aseptic conditions, whereby the liquid substance is solidified in the aseptic packages.Type: GrantFiled: January 23, 1979Date of Patent: November 11, 1980Assignee: Tetra Pak Developpement SAInventors: Jose R. Monaco, Hans A. Rausing
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Patent number: 4220249Abstract: A closing arrangement for a packing container is disclosed including a tubular member that may be firmly anchored within a pouring opening of the container. A cap member closes the tubular member and is provided with a pull-ring. The cap member is joined to the tubular member by a first connecting member which may be broken to open the container. The cap member is also joined to the tubular member by a second connecting member which forms a hinge located diametrically opposite to the pull ring. The second connecting member retains the cap member on the tubular member after the container is opened. The pull ring includes a locking element which cooperates with the tubular member to provide a catch. Upon movement of the pull-ring to open the container, the catch is caused to disengage from the tubular member. In this way, the first connecting element is broken but the catch permits a reclosure of the container. The closing arrangement is preferably made of a plastic material especially polyolefin.Type: GrantFiled: June 20, 1978Date of Patent: September 2, 1980Assignee: Tetra Pak Developpement SAInventor: Erling I. Nilsson
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Patent number: 4174200Abstract: A web of thermoplastic material and a method and apparatus for manufacture of the web are disclosed with the web having a repeating pattern of alternately thick and thin portions. A molten thermoplastic material is extruded through a duct between a first rotatable driven roll and a circular-cylindrical seat. The first driven roll includes a surface having a pattern of recessed portions. The web is transferred from the first driven roll to a second driven roll having a smooth surface. The temperatures of the first and second rolls may be selectively maintained. The thermoplastic material may be extruded through a plurality of ducts leading to the surface of the first driven roll. Transfer of the web from the first roll to the second may be encouraged by means of a vacuum. Furthermore, complete filling of the recesses of the first driven roll by the thermoplastic material may be encouraged by the use of a vacuum.Type: GrantFiled: December 9, 1977Date of Patent: November 13, 1979Assignee: Tetra Pak Developpement SAInventor: Peter Hoj
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Patent number: 4158692Abstract: A method and an apparatus for treating mouth areas of rigid plastic containers in order to prevent cracking during the capping of the containers. The width of the mouth opening of the container is prior to capping temporarily increased by means of a mandrel, which at a relatively low speed is introduced into the mouth opening. This results in a cold working and stretching of the plastic material adjacent to the opening and when the mandrel after a short while is with-drawn from the mouth opening the plastic material around the same is given a molecular orientation in the circumferential direction. The preferred apparatus includes fixing elements for holding a container so that its mouth opening is aligned with the mandrel, which is cylindrical with a somewhat greater diameter than the mouth opening and axially displaceable into the mouth opening.Type: GrantFiled: April 4, 1977Date of Patent: June 19, 1979Assignee: Tetra Pak Developpement SAInventor: Ingvar E. Nilsson
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Patent number: 4149651Abstract: The functioning of the cap part of a closure device having a thin-walled packing container is improved by applying a non-perforating score to the cap part in a position perpendicular to the direction of pull of the pull ring of the cap part.Type: GrantFiled: January 15, 1976Date of Patent: April 17, 1979Assignee: Tetra Pak Developpement SAInventor: Rolf L. Ignell
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Patent number: 4140235Abstract: A two-part closing arrangement for packing containers of plastic material comprises an internally threaded tubular body of a soft plastic secured to an inturned lip at the mouth of the container and into which is screwed a stopper-like cap also of plastic material and which is provided with a down-turned flange overhanging the mouth to be gripped by the user for applying and removing the cap.Type: GrantFiled: July 7, 1977Date of Patent: February 20, 1979Assignee: Tetra Pak Developpement SAInventors: Ruben A. Rausing, Ingvar E. Nilsson
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Patent number: 4132051Abstract: A method of manufacturing packing containers from a thin flexible plastic material intended to be enclosed within an outer shell of stiffer material for reinforcing purposes in which a plastic tube is extended from an annular extrusion die into which a filling pipe extends. The filling pipe is divided into a number of branch pipes arranged in a row and each of these branch pipes is entered into a corresponding longitudinally extending section of the interior of the extruded tube established between parallel spaced sealing zones formed between the front and back walls of the extruded tube which is expanded and thereafter somewhat flattened for this purpose. Longitudinally spaced transverse sealing zones are then formed across the flattened and filled tube sections and cuts are then made through the longitudinally and transversely extending seaing zones thus dividing them into individual filled containers.Type: GrantFiled: July 7, 1977Date of Patent: January 2, 1979Assignee: Tetra Pak Developpement SAInventor: Ruben A. Rausing
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Patent number: 4126238Abstract: The invention relates to packing containers formed from shrinkable plastics material of the type in which a plastics blank is shrunk onto a mold to produce a form having a bottleneck shape. The portion so given bottleneck shape has longitudinal and relatively parallel surface pleats. The plastics material so used has a relatively thick base layer of shrinkable foamed plastics material and an outer layer of homogeneous, relatively non-shrinkable plastics material.Type: GrantFiled: January 24, 1977Date of Patent: November 21, 1978Assignee: Tetra Pak Developpement SAInventor: Hans A. Rausing
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Patent number: D263799Type: GrantFiled: August 27, 1979Date of Patent: April 13, 1982Assignee: Tetra Pak Developpement SAInventor: Erling I. Nilsson