Patents Assigned to Furnier- und Sperrholzwerk J. F. Werz Jr. KG Werzalit-Pressholzwerk Oberstenfeld
  • Molding method
    Patent number: 4115490
    Abstract: A mixture of a fibrous material and a hot-setting binder is formed and subjected to the action of a high-frequency electromagnetic field. The mixture is subsequently cold molded and may then be hot molded. The alternating field slightly heats the binder thereby lowering its viscosity and, in addition, causes the moisture and the binder which are entrapped in the fibers of the fibrous material to be displaced towards the surfaces of the fibers. These effects lead to an improvement in the cold-adhesiveness of the mixture.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: September 19, 1978
    Assignee: Furnier- und Sperrholzwerk J. F. Werz Jr. KG Werzalit-Pressholzwerk Oberstenfeld
    Inventor: Edmund Munk