Patents Assigned to Johnson Manufacturing LLC
  • Apparatus and method for extracting plasticizer
    Patent number: 6063899
    Abstract: An apparatus and method for extracting plasticizer from polymer structures includes, in one embodiment, a vacuum chamber, a heating member and a condenser, the plasticizer being vaporized from the polymer structure by a combination of low temperature and heat, and in another embodiment, an evaporation chamber, a conveyer belt, and a plasticizer removal system, the plasticizer removal system including a duct having mounted therein a heating member, a fan and a condenser so that plasticizer may be extracted by forced air convection.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: May 16, 2000
    Assignee: Johnson Manufacturing LLC
    Inventors: Lonnie Johnson, John M. Baxley, Timothy J. Stachoviak