Patents Assigned to Roby Teknik Aktiebolag
  • Patent number: 5008076
    Abstract: A method of treating a moving material web that is to be used in the fabrication of aseptic packages includes heating the material web prior to inserting the web into a heated bath of sterilizing agent so that when the web is inserted into the bath, the temperature of the web is at least equal to the temperature of the heated bath. The apparatus for carrying out that method includes a heating arrangement that is connected to a container that contains the heated bath of sterilizing agent. The container is positioned after the heating arrangement in the direction of movement of the material web. The heating arrangement includes a box and nozzles extending inwardly from the inner sides of the box. The nozzles are connected to a source of hot air and are adapted to blow hot air on both sides of the material web for heating the web.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: April 16, 1991
    Assignee: Roby Teknik Aktiebolag
    Inventors: Goran Johansson, Par Olanders
  • Patent number: 4994310
    Abstract: In the manufacture of packing containers by means of folding of laminate in the form of sheets or of a web of the type which comprises a relatively thick carrier layer (2) of paper or cardboard and a gas-tight, thin metal foil (5) the laminate is subjected to stresses which, particularly within folding regions comprising multiple material thicknesses, may be so strong that crack formations occur in the metal foils protecting against gas which are sensitive to tension, thus entailing the risk of the intended gas barrier characteristics of the packing container being impaired or wholly lost.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: February 19, 1991
    Assignee: Roby Teknik Aktiebolag
    Inventors: Peter Frisk, Lars Lofgren
  • Patent number: 4964444
    Abstract: To provide a suitable filling atmosphere around a produce filling pipe on a packing machine and to make possible a rational, accurate cleaning of the filling pipe of the machine without having to dismantle and disassemble the filling pipe at a normal stoppage of the machine, the filling pipe is surrounded by a permanent tubular casing whose lower end is adapted so that it can be closed for cleaning with the aid of a detachable lid to form a container enclosing the filling pipe. The filling pipe, via a connecting means at the upper end of the casing, can be joined to an outer flow system to allow circulation of a cleansing agent.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: October 23, 1990
    Assignee: Roby Teknik Aktiebolag
    Inventors: Goran Hanerus, Tommy Ljungstrom
  • Patent number: 4884695
    Abstract: Packing containers manufactured from plastic-coated paper and having a sealing fin wherein the packing material is joined inside-to-inside in a sealed union, the material layers so joined together accommodating between them, at least along a part of the sealing fin, a tearing strip inserted in the sealing fin which is sealed to the inner plastic coating of the packing material. To facilitate the pulling off of the tearing strip on opening of the container, the packing material is provided at least within the region of the part of the sealing fin accommodating the strip with a material layer adapted to weaken adherence which is applied between the fibrous layer and the inner plastic coating of the packing material and preferably consists of water glass.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: December 5, 1989
    Assignee: Roby Teknik Aktiebolag
    Inventor: Tom Kjelgaard
  • Patent number: 4778053
    Abstract: A weblike package for suction tubes (1) comprising two straight tube parts (1a and 1b) which are joined flexibly by means of a bellows-folded, tubular intermediate part (1c). The package (2) comprises two flexible material webs which are joined to one another by repeated longitudinal and transversal sealing joints (6 and 7) which in pairs jointly form closed spaces (8) wherein suction tubes (1) are arranged. The suction tubes (1) are oriented straight with the free ends (1a' and 1b') of both their straight tube parts (1a and 1b) directed away from one another towards the longitudinal edges (5 and 5') of the material webs.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: October 18, 1988
    Assignee: Roby Teknik Aktiebolag
    Inventor: Jan Hakansson
  • Patent number: D314652
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: February 12, 1991
    Assignee: Roby Teknik Aktiebolag
    Inventor: Lars Nystrom