Patents Assigned to Polymerit
  • Mold-release coating systems
    Patent number: 7192620
    Abstract: A mold-release coating system includes a barrier coating of a substantially liquid wax material. The wax material is deposited onto the mold surface. The wax material includes about 7 to about 10 weight percent solids. The wax material is permitted to substantially dry after deposition onto the mold surface. The mold-release coating system also includes a release powder deposited onto the barrier coating after the wax material has been permitted to substantially dry after deposition onto the mold surface.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: March 20, 2007
    Assignee: Polymerit
    Inventor: Bror H. Hanson
  • Method for forming a mold-release coating
    Patent number: 6291026
    Abstract: A method for forming a mold-release coating on a mold surface includes providing a coating of material on the mold surface. The coating of material has a surface which is capable of accepting and retaining a release powder. The method also includes depositing the release powder onto the coating of material. The release powder embeds the coating of material upon deposition thereby forming a mold-release coating.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: September 18, 2001
    Assignee: Polymerit
    Inventors: Bror H. Hanson, Douglas L. Hunter
  • Method for forming a mold-release coating
    Patent number: 6117495
    Abstract: The method for forming a mold-release coating on a mold surface includes two basic steps: (a) providing a base coat of material on the mold surface and (b) electrostatically depositing a release powder onto the base coat of material. The base coat of material has a surface which is capable of accepting and retaining the release powder. Upon deposition of the release powder, the release powder embeds the base coat of material thereby forming a mold-release coating. The base coat may be a wax or a solvent base wax.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: September 12, 2000
    Assignee: Polymerit
    Inventors: Bror H. Hanson, Douglas L. Hunter