Patents Assigned to American Can Company
  • Patent number: 4557780
    Abstract: Molecularly oriented plastic films have five molecularly oriented layers. A first layer provides a barrier to gaseous transmission through the film and has a composition of 0% to 50% nylon or nylon copolymer, and conversely 50% to 100% ethylene vinyl alcohol. Second and third adhesive layers are adhered to the surfaces of the first layer, and have compositions comprising olefinic polymers, or copolymers, or blends thereof, the compositions having carboxyl modifications therein. Fourth and fifth layers are adhered to the second and third layers on the respective surfaces opposite the first layer. The fourth and fifth layers comprise 40% to 100% ethylene vinyl acetate and 0% to 60% linear low density polyethylene. Also disclosed are processes for making the oriented five layer films.
    Type: Grant
    Filed: October 14, 1983
    Date of Patent: December 10, 1985
    Assignee: American Can Company
    Inventors: David L. Newsome, Arnold R. Rein, Bradley J. Hoss, George O. Schroeder
  • Patent number: 4556590
    Abstract: A laminated packaging material suitable for use in flexible containers for potato chips, cookies, and the like comprises (A) as an outer layer, a transparent sheet of nylon coated on its inner surface with an acrylic latex, (B) a coextruded laminate of pigmented polyethylene and ethylene acrylic acid copolymer, (C) a metallic foil, preferably aluminum, and (D) a heat-sealable polyolefin as the inner layer. This packaging material not only prints well but also can be formed by co-extrusion lamination to achieve excellent lamination bond strength. Bags prepared from this packaging material have excellent moisture resistance and sealing properties.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: December 3, 1985
    Assignee: American Can Company
    Inventor: Laverne D. Martin
  • Patent number: 4556498
    Abstract: This disclosure includes a means by which a precoating for a metal plate can be made to withstand stresses imposed upon it and the plate during forming operations such as stretching and drawing by first adding a dry film lubricant to the coating. The lubricant has a softening point as high or higher than the coating.
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: December 3, 1985
    Assignee: American Can Company
    Inventors: Adelaida Carbo, Raymond H. Good
  • Patent number: 4554190
    Abstract: Injection molded and injection blow molded multi-layer plastic articles, parisons and containers are provided, which, in preferred embodiments are substantially rigid and have at least three layers wherein a portion of the marginal end portion of their internal layer is folded over within the marginal end portion of the side wall of the article, preferably in the flange if the article is a parison or container. The articles folded over portion can be toward the inside or the outside of the side wall. The articles, parison, and containers can be open-ended, or closed, for example, with end closures double seamed thereto or flexible lids secured thereto by an adherent, or heat seal, or other suitable means. The folded over portion and any not folded over portion of the internal layer preferably extends substantially uniformly into the marginal end portion of the side wall.
    Type: Grant
    Filed: April 13, 1983
    Date of Patent: November 19, 1985
    Assignee: American Can Company
    Inventors: Robert J. McHenry, Henry Pfutzenreuter, III, Thomas T. Tung, John Vella, Jr.
  • Patent number: 4552714
    Abstract: A novel coextruded plastic film has as an adhesive layer between polypropylene and nylon layers, a blend of polypropylene and a graft copolymer of maleic anhydride onto a polypropylene backbone, the graft copolymer having been produced in a reaction carried out at a temperature of from about 80.degree. C. up to about 10.degree. C. below the melting point of the polypropylene.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: November 12, 1985
    Assignee: American Can Company
    Inventors: Duane A. Krueger, Thomas W. Odorzynski
  • Patent number: 4552801
    Abstract: An EVOH copolymer blend is extrudable to produce films of uniform caliper and excellent oxygen barrier properties. Aromatic sulfonamides are desirably utilized as plasticizers, and superior composite films including a layer of the plasticized EVOH are produced.
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: November 12, 1985
    Assignee: American Can Company
    Inventors: Thomas W. Odorzynski, Jack E. Knott, II
  • Patent number: 4551371
    Abstract: A multiple layer polymeric-based sheet structure is suitable for forming dispensing tubes. The abuse resistance of the tube is improved by incorporating in the sheet structure a layer of oriented polypropylene. A layer of linear low density polyethylene provides for heat sealing and has substantially improved stress crack resistance and resistance to generation of polydust.
    Type: Grant
    Filed: November 4, 1983
    Date of Patent: November 5, 1985
    Assignee: American Can Company
    Inventor: John P. Eckstein
  • Patent number: 4547645
    Abstract: A method and apparatus for processing of workpieces comprising the steps of continuously transferring the workpieces to and fro among a plurality of rotating members, wherein each member carries a plurality of sets of work stations. Workpieces, such as precut tubular sleeves, and tube heads, are sealed to form containers, utilizing continuously rotating turrets and cooperating rotating members designed to produce such containers efficiently and at high rate of production.
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: October 15, 1985
    Assignee: American Can Company
    Inventors: Robert P. Smith, William S. Gillespie, Hal L. Inglis, Donald B. Hoyne
  • Patent number: 4546882
    Abstract: An improved package, including an oil-containing product, includes a multiple layer packaging sheet material which is free from cockling. The multiple layer sheet material includes a layer which is susceptible to being swelled when in contact with oil, giving a cockled appearance. With reference to the package structure, the sheet material also includes an oil barrier layer between the oil-containing product and the layer which is susceptible to being swelled when in contact with oil. The barrier layer comprises either nylon or ethylene vinyl alcohol.
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: October 15, 1985
    Assignee: American Can Company
    Inventors: Joseph C. Hsu, George O. Schroeder, Robert A. Steen
  • Patent number: 4542029
    Abstract: A container body made of thermoplastic materials, after being filled with a hot liquid, is then sealed by a flat closure disc adhesively contacting a peripheral lip formed around the top of the body. The bottom of the container body is formed with annular grooves to define a diaphragm which flexes inwardly with the closure disc upon cooling of the hot filled liquid to substantially dissipate the high internal vacuum which is formed in the container head space. The bottom of the container body has a reinforced pedestal base formed with stacking ledges to facilitate nesting of empty bodies for shipment and storage.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: September 17, 1985
    Assignee: American Can Company
    Inventors: Ali R. Caner, Kenneth B. Spencer
  • Patent number: 4541983
    Abstract: A three layer heat shrinkable film is disclosed, along with preferred process for making it. The film comprises a first heat sealable layer of an ionomer, a second layer of a vinylidene chloride copolymer, and a third layer of a blend of an ionomer and an EVA copolymer. The EVA content is no greater than 20% of the blend by weight, and the vinyl acetate content is at least 4.5% of the blend by weight. In the preferred process, a three layer tape is coextruded and cooled, and reheated to 197.degree.-203.degree. F., and oriented in a conventional double bubble process.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: September 17, 1985
    Assignee: American Can Company
    Inventors: Joseph C. Hsu, Donald W. Vought, George H. Walbrun
  • Patent number: 4536409
    Abstract: This disclosure includes an activatable oxygen scavenger used as a part of a packaging structure for comestibles.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: August 20, 1985
    Assignee: American Can Company
    Inventors: Christopher J. Farrell, Boh C. Tsai
  • Patent number: 4535615
    Abstract: In the production of drawn and ironed seamless metal cans an elongated sheet, for example, of tin-plated steel or aluminum, is lubricated and fed to a blanking and cupping press which cuts the sheet and forms it into shallow cups. The cups are fed to a series of ironing dies which thin the sidewalls of the cups and produce tall, smooth shells. While in the sidewall ironer the cups, shells and dies are flooded with an oil-in-water emulsion which acts as a lubricant and coolant. The can shells are trimmed to obtain a uniform height, and washed. The lubricant-coolant is re-circulated to and from the wall ironer by the coolant system which contains tanks, pumps, conventional plate-frame filter, chiller, etc. to remove heat and contaminants. Can shells emerging from the ironing process carry a relatively large amount of coolant as "drag out". Some of the dragged out coolant is dripped into the waste pit while the rest is removed in the can-washing operation.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: August 20, 1985
    Assignee: American Can Company
    Inventor: Gerald J. Ebben
  • Patent number: 4534201
    Abstract: A method and tool for drawing and ironing and bottom profiling a container in a single process operation is disclosed wherein the ironing does not take place during the bottom profiling operation and the precoating of the container side wall is not damaged during removal of the punch because of a specifically configured undercut portion of the punch wall.
    Type: Grant
    Filed: December 29, 1982
    Date of Patent: August 13, 1985
    Assignee: American Can Company
    Inventors: John LaRosa, David C. Panipinto
  • Patent number: 4526823
    Abstract: A plastic laminate sheet for making collapsible dispensing container comprises an outer layer of filled-plastic made of polypropylene or a blend of polypropylene, and high density polyethylene, and a filler, preferably calcium carbonate, incorporated therein. The outer filled-plastic layer is coextensively bonded to an inner layer of high density polyethylene to form the laminate sheet. An intermediate layer of an oxygen barrier plastic may be interposed in the laminate sheet in order to impart oxygen impermeability thereto.
    Type: Grant
    Filed: December 28, 1983
    Date of Patent: July 2, 1985
    Assignee: American Can Company
    Inventors: Christopher J. Farrell, Mark A. Williams
  • Patent number: 4526821
    Abstract: A rigid container is made by injection molding a parison having plural layers of polymers. The parison is blow molded to the final shape of the container. Control during injection is exercised over each of the plural polymers so as to produce uninterrupted layers extending throughout the walls of the parison and to insure that the interior layers are completely encapsulated within the outer layers.
    Type: Grant
    Filed: July 20, 1979
    Date of Patent: July 2, 1985
    Assignee: American Can Company
    Inventors: Robert J. McHenry, Robert Seebohm
  • Patent number: 4525134
    Abstract: Apparatus for making a rigid container by injection molding a parison having plural layers of polymers. The parison is blow molded to the final shape of the container. Control during injection is exercised over each of the plural polymers so as to produce uninterrupted layers extending throughout the walls of the parison and to insure that the interior layers are completely encapsulated within the outer layers.
    Type: Grant
    Filed: November 25, 1981
    Date of Patent: June 25, 1985
    Assignee: American Can Company
    Inventors: Robert J. McHenry, Martin A. Ryan
  • Patent number: 4522775
    Abstract: A multi-layer laminate structure comprises a separate layer of scrap produced from the several thermoplastic resins used in making the laminate structure. In a preferred construction, the multi-layer laminate structure comprises an outer thermoplastic polyolefin layer, an inner thermoplastic polyolefin layer and an intermediate oxygen barrier layer preferably made of ethylene-vinyl alcohol copolymer. An adhesive layer bonds the barrier layer to the inner polyolefin layer and a separate scrap layer is disposed interiorly of the outer polyolefin layer. A second adhesive layer bonds the scrap layer to the intermediate barrier layer. Containers having excellent oxygen barrier properties and good transparency are made by forming a parison from the multilayer laminate structure and blow molding the parison to the desired container shape.
    Type: Grant
    Filed: November 29, 1982
    Date of Patent: June 11, 1985
    Assignee: American Can Company
    Inventors: Jerald E. Briggs, Henry Pfeutzenreuter
  • Patent number: 4518344
    Abstract: A free floating runner system wherein runner means, including a runner block and its runner extension, are mounted on their axial center lines on support means, with a gap between the runner structures and surrounding structures to allow the runner structures to freely thermally expand radially and axially.A force compensation system comprised of means, preferably hydraulic, for providing a forward force to the runner structures to offset any rearward force from axial floatation of the runner means and to provide an on-line, effective pressure contact seal between the nozzle sprues and injection cavity sprues.Methods provide an on-line effective pressure contact seal between co-injection nozzle sprues and injection cavity sprues.
    Type: Grant
    Filed: April 13, 1983
    Date of Patent: May 21, 1985
    Assignee: American Can Company
    Inventors: Maurice G. Latreille, William A. Tennant
  • Patent number: 4512730
    Abstract: A device for use with a runner block and a multi-polymer co-injection nozzle having separate rear entrance ports for separate polymer streams, in a multi-coinjection nozzle, multi-polymer injection molding machine, for receiving from the runner block a plurality of separate polymer flow streams and for redirecting them to flow axially out of the forward end of the device into the nozzle rear entrance ports. The device has inlets cut radially into its periphery, each for receiving a polymer flow stream, and has feed channels, each in communication with an inlet and having an inward portion cut toward the device's central axis, and an axial portion communicating with the inward portion, running axially forward and terminating at an exit hole in the device's forward end, the exit holes being in a spaced pattern for feeding the separate polymer flow streams in spaced relation into the nozzle rear entrance ports.
    Type: Grant
    Filed: April 13, 1983
    Date of Patent: April 23, 1985
    Assignee: American Can Company
    Inventors: Frederick G. Kudert, William A. Tennant, Thomas T. Tung