Barrier Layer Or Ply (e.g., Waterproof) Patents (Class 383/113)
  • Patent number: 4468812
    Abstract: A flexible container for potable liquids, the container being of a fabric reinforced rubber body with an internal lining, the lining being bonded to the rubber and being formed of a non-orientated polypropylene. The potable liquid may be wine.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: August 28, 1984
    Assignee: IMI Marston Limited
    Inventor: Ronald L. Grosvenor
  • Patent number: 4461031
    Abstract: A tubular web has a bottom which is tightly sealed to enable pressurizing of the bag, the bottom including a first band of thermosetting glue imprinted across the length of the web at the interior of the tube. A second band and a third band of thermosetting glue are imprinted on the tube at the exterior thereof in registry with the ends of the first band and jointly extend across a rear panel. The tube has a turned up bottom defined by a fold along a line extending centrally along the imprinted bands, each portion of the thermosetting glue bands being thermally fused only to other portions of such bands in contact therewith. In one embodiment, there is a second fold along a second line spaced from the turned up bottom which defines an area between the second line and the turned up bottom, such area being joined by glue to the back panel.
    Type: Grant
    Filed: March 10, 1981
    Date of Patent: July 17, 1984
    Assignee: Bagcraft Corporation of America
    Inventor: Robert H. Blamer
  • Patent number: 4457960
    Abstract: Linear low density polyethylene is used in multiple layer, molecularly oriented films. Novel blends of linear low density polyethylene with ethylene vinyl acetate copolymer are disclosed, and used in molecularly oriented multiple layer films. Bags made from the multiple layer films are especially useful for shrink packaging, and particularly for shrink packaging of meats having large cavities.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: July 3, 1984
    Assignee: American Can Company
    Inventor: David L. Newsome
  • Patent number: 4453938
    Abstract: An incontinence guard for male use comprises a sheath with an insertion opening along one edge and edge portions beside the opening are disposed such that, when the guard is in place, the edge portions are directed obliquely upwards one on each side of the penis root to grip the sides of the penis and improve retention of the guard in position.
    Type: Grant
    Filed: November 29, 1982
    Date of Patent: June 12, 1984
    Assignee: Landstingens Inkopscentral, LIC, Ekonomisk Forening
    Inventor: Lennart I. Brendling
  • Patent number: 4452835
    Abstract: A multilayer film suitable for packaging a primal red meat cut comprising at least a first layer of a mixture of low molecular weight thermoplastic hydrocarbon resin and a polymeric resin selected from the group consisting of polyolefins and ethylene-vinyl acetate copolymers, and a second layer comprising acrylonitrile. The hydrocarbon resin serves as an adhesion promoter between the first layer and the second layer, and is selected from the group consisting of alpha-methyl-styrene copolymerized with styrene which may be 30 to 60 percent hydrogenated, and ethylene-vinyl acetate copolymers containing 8 to 30 percent by weight of vinyl acetate. A process for producing the multilayer films by coextrusion is also disclosed.
    Type: Grant
    Filed: September 23, 1982
    Date of Patent: June 5, 1984
    Assignee: Union Carbide Corporation
    Inventor: Ganapathy Vasudevan
  • Patent number: 4431316
    Abstract: A fabric having anti-static properties being formed from a first woven layer of polymeric fabric, a second woven layer of polymeric fabric which contains spaced threads of staple metal fibres and an intermediate layer positioned between the first and second layers to form a moisture barrier. In its most preferred form the woven polymeric fabric is formed of woven polypropylene and the spaced threads of staple metal fibres are formed of staple stainless steel fibres carried on a central core of a synthetic material. The fabric is of particular use in the manufacture of intermediate bulk containers where it is believed is advantageous in permitting corona discharge at a very low voltage of static electricity thereby preventing any dangerous build-up of voltage which subsequently is discharged by a spark.
    Type: Grant
    Filed: April 15, 1983
    Date of Patent: February 14, 1984
    Assignee: Tioxide Group PLC
    Inventor: Frederick Massey
  • Patent number: 4411358
    Abstract: The invention relates to a package protecting its contents from the influence of light, microbial contamination and gas transport in either direction but which makes possible a visual control of the contents before the package is used.According to the invention, the package is made of a light-proof outer bag (1) and a light permeable inner bag (3) arranged inside the outer bag. The outer bag (1) and the inner bag (3) are each sealed at one of their ends (2,4) and are bonded around their periphery (6) close to their other end, and the two bags extend over this bond and are then commonly joined and sealed. By opening one of the end seals in the outer bag (1), the inner bag (3) can be turned out of the outer bag, and the contents (5) of the package can be observed visually through the inner bag.The package of the invention is especially suitable for storage of preparations for parenteral administration and especially infusion solutions intended to be given intravenously.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: October 25, 1983
    Assignee: Vitrum AB
    Inventors: Percy Bennwik, Birger Hjertman