Processes Of Molding Articles Of Vinylidene Chloride Patents (Class 264/DIG79)
  • Patent number: 5262108
    Abstract: In the course of producing a multicolored slush skin in accordance with the powder-slush method, individual one-piece slush skins are produced in successive process steps, which extend over the entire mold, which is divided into individual color zones by means of separation fins. After the first slush skin with the first color has been produced, the area assigned to another color is cut off and this part taken out of the mold, the other part of the slush skin remaining in the mold. Subsequently a complete second slush skin is formed in the previously emptied partial area as well as in the area of the remaining first slush skin, etc. A multicolored slush skin, looking from the grain side, then is the result after it is finally taken out of the mold, which is distinguished by an exact and visually tidy separating seam between the individual color areas.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: November 16, 1993
    Assignee: J. H. Benecke AG
    Inventors: Jurgen Minke, Roland Wolff, Axel Bruder, Werner Wagner
  • Patent number: 5234653
    Abstract: A method for moulding a two-colored material includes moulding a gasket such that it has a profile which is approximately the same as a profile of one of a plurality of possible corresponding regions of the inner surface of a mould. In addition, a rigid material is embedded in the gasket and the gasket is fixed to a separation wall. The gasket and the separation wall are then inserted into the mould with the gasket being aligned along the one of the plurality of possible corresponding regions of the inner surface of the mould, such that a seal between the inner surface of the mould and the separation wall is formed and first and second half-spaces are defined within the mould. The gasket is compressed against the inner surface of the mould to improve the sealing therewith and slush moulding of a layer of a first colored material within the first half-space is performed. The layer of the first colored material is consolidated and the gasket and the separation wall are removed from the mould.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: August 10, 1993
    Assignee: Industrie ILPEA S.p.A.
    Inventors: Giancarlo Buzzoni, Paolo Cittadini
  • Patent number: 5151230
    Abstract: A process formulation and apparatus for producing formed parts of polymeric binders and elastic or inflexible particularized ingredients. A formulation for forming a formed material upon the application of heat and pressure comprising a mixture of: (a) 75 to 95.5 wt. % of elastic or inelastic particles; (b) 2.5 to 25.0 wt. % of a polymer binder; (c) 0 to 20.0 wt. % of a coloring pigment; and (d) 0.1 to 0.5 wt. % of a catalyst.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: September 29, 1992
    Assignee: Dinoflex Manufacturing Ltd.
    Inventor: Dirk H. Damberg
  • Patent number: 4637887
    Abstract: Triglycerides containing hydroxy fatty acid residues, of the type obtainable by hydrogenating epoxidized natural fats and oils, are used as lubricants for the molding of polyvinyl chloride or copolymers predominantly containing vinyl chloride, and are a replacement for hardened castor oil.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: January 20, 1987
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Kurt Worschech, Frido Loeffelholz, Peter Wedl, Bernd Wegemund